Omron Network Card NT31 NT31C User Manual

Cat. No. V062-E1-02

NT31 and NT31C

Programmable Terminals

Setup Manual

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NT31and NT31C

Programmable Terminals

Setup Manual

Revised January 2003

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Notice:

OMRON products are manufactured for use according to proper procedures by a qualified operator

and only for the purposes described in this manual.

The following conventions are used to indicate and classify precautions in this manual. Always heed

the information provided with them. Failure to heed precautions can result in injury to people or dam-

age to property.

DANGER

Indicates an imminently hazardous situation which, if not avoided, will result in death or

serious injury.

WARNING

Caution

Indicates a potentially hazardous situation which, if not avoided, could result in death or

serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or

moderate injury, or property damage.

OMRON Product References

All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers

to an OMRON product, regardless of whether or not it appears in the proper name of the product.

The abbreviation “Ch,” which appears in some displays and on some OMRON products, often means

“word” and is abbreviated “Wd” in documentation in this sense.

The abbreviation “PC” means Programmable Controller and is not used as an abbreviation for any-

thing else.

Visual Aids

The following headings appear in the left column of the manual to help you locate different types of

information.

Note Indicates information of particular interest for efficient and convenient operation

of the product.

1, 2, 3... 1. Indicates lists of one sort or another, such as procedures, checklists, etc.

 OMRON, 2000

form, or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permis-

sion of OMRON.

No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is

constantly striving to improve its high-quality products, the information contained in this manual is subject to change

without notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no

responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the informa-

tion contained in this publication.

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TABLE OF CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

xii

SECTION 1

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1 Role and Operation of the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2 Functions of the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4 Communications with the Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5 Communications Using Memory Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-6 Before Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2

Preparing for Connection . . . . . . . . . . . . . . . . . . . . . . . . .

2-1 Method for Connection to the Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 Names and Functions of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3

Hardware Settings and Connections . . . . . . . . . . . . . . . .

3-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 Connecting to the Support Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3 Connecting a Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4 Connecting a Bar Code Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5 Using a Memory Unit (-Vj Versions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6 Using a Memory Unit (Versions without the -Vj Suffix) . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4

Connecting to the Host from the RS-232C Port . . . . . . .

4-1 Connecting to the RS-232C Port at the Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5

Connecting to the Host from the RS-422A/485 Port . . . .

5-1 Connecting to the Host’s RS-232C Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2 Connecting to the Host’s RS-422A/485 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

100

SECTION 6

System Menu Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 131

6-1 System Menu Operation Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-2 Starting the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-3 Operation Modes and the System Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-4 Memory Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-5 Operations in the System Installer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-6 Transmitting the Screen Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7 Setting Conditions for Communications with Host by Using Memory Switches . . . . . . .

6-8 Starting Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-9 System Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-10 Setting the Bar Code Reader Input Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-11 System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-12 Programming Console Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-13 Device Monitor Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-14 Version Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

133

134

135

140

150

155

157

168

188

191

221

227

230

vii

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TABLE OF CONTENTS

SECTION 7

Troubleshooting and Maintenance . . . . . . . . . . . . . . . . . . 231

7-1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2 Responding to Displayed Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-3 Maintenance of the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-4 Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

232

235

241

245

Appendices

A Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C Using an RS-232C/RS-422A Convertor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D Transporting and Storing the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E Making the Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

247

255

259

265

267

269

271

273

275

277

283

Making the Cable for Connecting a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

G Making the Cable for Connection to a Bar Code Reader . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Making the Cable for Connection to a Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Relationship between System Program and Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

K Option List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

viii

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About this Manual:

This manual describes connecting the NT-series NT31 and NT31C Programmable Terminals to a PC

(Programmable Controller) or other host and peripheral devices and the settings required for communica-

tions and applications. It includes the sections described below.

Please read this manual carefully and be sure you understand the information provided before attempting

to install and operate the Programmable Terminal.

Section 1 provides fundamental information about the functions and features of the PTs, types of connec-

tion, communication methods, etc. This information will enable you to understand the applications of the

PTs.

Section 2 describes the connection methods that are possible with the PTs, and the functions of the parts

of PTs, as the required knowledge before connecting to the host and to the peripheral devices.

Section 3 describes the settings of the PTs and methods for connection to peripheral devices.

Section 4 describes the method for connecting to the host using the RS-232C port of the PT.

Section 5 describes the method for connecting to the host using the RS-422A/485 port of the PT.

Section 6 describes the operation of the System Menu, focusing on the procedure to start the PT. Func-

tions that are convenient when using the PT and those that are useful for system maintenance are also

explained here.

Section 7 describes the action to take when errors occur in the PT, and how to carry out maintenance and

inspection to prevent the occurrence of errors.

The Appendices provide specifications, dimensions, procedures for using an RS-232C/RS-422A Con-

vertor Unit, procedures for transporting and storing the PT, information on cable preparation, information

on the relationship between the system program and hardware, and product lists.

WARNING Failure to read and understand the information provided in this manual may result in

personal injury or death, damage to the product, or product failure. Please read each

section in its entirety and be sure you understand the information provided in the section

and related sections before attempting any of the procedures or operations given.

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TABLE OF CONTENTS

Related Manuals:

Related manuals are listed below.

The j symbol at the end of the catalog number is the revision number.

Connecting and Setting Up the Programmable Terminal

S NT31 and NT31C PT Setup Manual (V062-E1-j, this manual)

This manual describes connecting the Programmable Terminals to a host and

peripheral devices and settings required for communications and applications.

The functions and actual operating methods for the NT31 and NT31C PTs are

provided in the Reference Manual (V064-E1-j).

Programmable Terminal Functions and Operation

S NT31/31C/631/631C PT Reference Manual (V064-E1-j)

This manual is used for any of the following PTs: NT31, NT31C, NT631, and

NT631C. It describes screen configurations, part functions, host control meth-

ods, and other application information.

PT connection and setup procedures are described in the NT31 and NT31C PT

Setup Manual (V062-E1-j).

Creating and Transferring Screen Data, and Installing the System Program

S NT-series Support Tool for Windows Ver. 4.1 Operation Manual (V061-E1-j)

The screens displayed on the NT31 and NT31C PTs are created with the Support

Tool and transferred to the PT. This manual describes how to create and transfer

screen data. It also describes how to download a system program to a PT using

the System Installer.

The NT-series Support Tool for Windows is normally referred to as merely the

Support Tool.

Connecting to Controllers Not Made by OMRON

S PC Connection Manual (V042-E1-j)

The NT31 and NT31C PTs can be connected to controllers in the following se-

ries: Mitsubishi A Series and FX Series. This manual describes the connection

and setup methods for these controllers.

The NT-series Support Tool for Windows Version 4.1 is required to connect the

NT31 and NT31C PTs to these controllers.

S NT31/NT631 Multi Vendor Connection Manual (V060-E1-j)

The NT31 and NT31C PTs can be connected to controllers in the following se-

ries: Allen-Bradley SLC 500 Series, GE Fanuc 90-20 and 90-30 Series, and Sie-

mens S7-300 and S7-400 Series. This manual describes the connection and set-

up methods for these controllers.

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PRECAUTIONS

This section provides general precautions for using the Programmable Terminal.

The information contained in this section is important for the safe and reliable application of the Programmable Ter-

minal. You must read this section and understand the information contained before attempting to set up or operate a

Programmable Terminal.

1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

xii

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Safety Precautions

Intended Audience

This manual is intended for the following personnel, who must also have knowl-

edge of electrical systems (an electrical engineer or the equivalent).

• Personnel in charge of introducing FA systems into production facilities.

• Personnel in charge of designing FA systems.

• Personnel in charge of installing and connecting FA systems.

• Personnel in charge of managing FA systems and facilities.

General Precautions

The user must operate the product according to the performance specifications

described in the operation manuals.

Before using the product under conditions which are not described in the manual

or applying the product to nuclear control systems, railroad systems, aviation

systems, vehicles, combustion systems, medical equipment, amusement ma-

chines, safety equipment, and other systems, machines and equipment that

may have a serious influence on lives and property if used improperly, consult

your OMRON representative.

Make sure that the ratings and performance characteristics of the product are

sufficient for the systems, machines, and equipment, and be sure to provide the

systems, machines, and equipment with double safety mechanisms.

This manual provides information for using the Programmable Terminal. Be sure

to read this manual before attempting to use the software and keep this manual

close at hand for reference during operation.

WARNING It is extremely important that Programmable Terminals and related devices be

used for the specified purpose and under the specified conditions, especially in

applications that can directly or indirectly affect human life. You must consult

with your OMRON representative before applying Programmable Terminals to

the above-mentioned applications.

WARNING Do not use input functions such as PT touch switches for applications where

danger to human life or serious damage is possible, or for emergency switch

applications.

Safety Precautions

Read these safety precautions carefully and make sure you understand them

before using the Programmable Terminal so that you can use it safely and cor-

rectly.

Safety Conventions

andtheir Meanings

This operation manual uses the following conventions and symbols to indicate

cautions, warnings, and dangers in order to ensure safe use of the NT31/31C.

The cautions, warnings, and dangers shown here contain important information

related to safety. The instructions in these cautions, warnings, and dangers must

be observed.

WARNING

Caution

Indicates a potentially hazardous situation which, if not avoided, could result in death or

serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or

moderate injury, or property damage.

xii

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Safety Precautions

WARNING

Do not attempt to take the unit apart and do not touch any

internal parts while the power is being supplied. Doing either of

these may result in electrical shock.

WARNING

Switch OFF the NT31/NT31C power before replacing the

backlight. Otherwise you could sustain an electric shock.

CAUTION

Do not touch the backlight immediately after switching OFF

the power supply.

Otherwise burn injuries may result due to the high

temperatures.

xiii

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SECTION 1

General

This section provides fundamental information about the functions and features of the PTs, types of connection, communica-

tion methods, etc. This information will enable you to understand the applications of the PTs.

1-1 Role and Operation of the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1-1 Operation of an NT31/NT31C at an FA Production Site . . . . . . . . . . . . . . . . . . . .

1-1-2 Operations of the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2 Functions of the NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-2 Comparison between NT31 and NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-3 Additional Functions of the V2 Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-4 Comparison between NT30/NT30C and NT31/NT31C . . . . . . . . . . . . . . . . . . . .

1-2-5 Principal Functions of NT31/NT31C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-6 Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3-1 Peripheral Devices That Can Be Connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3-2 Connecting to the Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4 Communications with the Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-1 Direct Connection Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-2 Host Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-3 NT Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-4 Connecting to other Companies’ PCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5 Communications Using Memory Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5-1 Memory Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5-2 Comparison between Direct Connection and Memory Link . . . . . . . . . . . . . . . . .

1-5-3 Memory Link Online Transfer Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-6 Before Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Role and Operation of the NT31/NT31C

Section 1-1

1-1 Role and Operation of the NT31/NT31C

The NT31/NT31C is a sophisticated display unit (programmable terminal) which

automatically displays information and can also be used for operations when

necessary. The following gives a general description of the role and operation of

the NT31/NT31C for those using a programmable terminal (PT) for the first time.

1-1-1 Operation of an NT31/NT31C at an FA Production Site

Production Line Status

Monitoring

The NT31/NT31C displays real-time information about the system and equip-

ment operating status, etc. Its power of expression is enhanced by graphs and

other visuals, making the displays easy to understand.

Production Control (3)

Product

Today’s target

560

305

441

275

Current production

Number defective

Number repaired

% achieved

Directions to Workers on

the Shop Floor

The NT31/NT31C warns of system or equipment failures and prompts the ap-

propriate remedial action.

Alarm

Assembly line B

Positioning pin

is defective. Line stopped.

Check the following.

1. Defective pin L3

2. Position of dog M2

3. Mounting of photosensor P5

Panel Switch Functions

Setting touch switches on the NT31/NT31C allows workers to use the

NT31/NT31C as an operating panel; the results of the operations are trans-

mitted to the host.

Electroplating control

Corr. prv.

head

Electr. Wash.

Transport

head

Clamp

Unclamp

Adv.

Rev.

Corr.

prv.fluid

Electro-

lyte

Int. stop

Wash

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Role and Operation of the NT31/NT31C

Section 1-1

1-1-2 Operations of the NT31/NT31C

Displays Screens

The information to be displayed (screen data) can be created on a computer us-

ing the Support Tool and stored in the NT31/NT31C. The screen data can be

displayed on the NT31/NT31C in response to instructions from the host or touch

switch operation.

Host

The screen data designated by

instructions from the host or touch

switch operation is displayed.

Receives Data from a

Host

The NT31/NT31C can be connected to the host by a host link or NT link and re-

ceive necessary data from the host.

Host link, NT link

Host

Sends Data to a Host

Data input using the touch panel (switch ON/OFF statuses, numeric values,

character strings) can be transmitted to the host.

Host

Touch panel

ON/OFF information, numeric

data, etc.

Screen Data

The screen data to be displayed on the NT31/NT31C can be created on a per-

sonal computer using the Support Tool. Connect the NT31/NT31C to the per-

sonal computer with an RS-232C cable and transmit the screen data to the

NT31/NT31C.

Create screen data.

RS-232C

Personal

computer

(Support Tool)

Screen data

When the host is connected at serial port A,

the personal computer is only connected

when communicating screen data between

the NT31/NT31C and Support Tool.

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Functions of the NT31/NT31C

Section 1-2

1-2 Functions of the NT31/NT31C

The NT31/NT31C has the following features.

1-2-1 Features

Downsized Body

• Slim body (50 mm or less in the panel*).

• The communication cable connectors are housed in the unit so that they do not

protrude from the unit.

* When mounted in a panel of the recommended thickness (page 32).

Construction Best Suited to the FA Environment

• The panel is an STN monochrome LCD type with backlight for the NT31 and an

STN color LCD type with backlight for the NT31C.

• The backlight unit and battery can be replaced at the operation site.

• Waterproofed equivalent to the NEMA4 standard and to IP65F*.

* The panel may not be usable in environments where it is exposed to oil for long

periods.

320 dots

POWER

RUN

240 dots

Wide angle of visibility

Touch Switch Operation

Contrast and brightness are adjustable by touch switch operations.

Compatibility with Other PTs

• There is upward compatibility between the NT31/NT31C and the following

models for screen data and user programs: NT11S, NT20S, NT30, NT30C,

NT600S, NT610G, NT610C, NT620S, NT620C, NT625C, NT631, NT631. (Af-

ter being read to the Support Tool, screens must be modified in accordance

with the screen size. Depending on the function used, partial modification of

programs may also be necessary. For details on the compatibility of screen

data, refer to the NT31/NT31C/NT631/NT631C Programmable Terminal Ref-

erence Manual and the NT-series Support Tool Operation Manual.

• The dimensions of the panel cut-out to accommodate the NT31/NT31C are the

same as for the NT30/NT30C.

Two Ports Featured as Standard:

Port A for Common Use by Support Tool/Host and Port B for Exclusive Use by the Host

• Communication with the host is possible via another port while connected to

the Support Tool.

• Reading bar code data from a bar code reader is possible via another port

while communicating with the host.

Rapid System Program & Screen Data Changes Possible Using a Memory Unit

• Installing a memory unit (type NT-MF261) on the rear of the NT31/NT31C

makes it easy to write screen data into the NT31/NT31C on site. This enables a

rapid response to setup changes.

• NT31/NT31C can store a system program into a memory unit. This enables the

system to handle more flexible setups.

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Functions of the NT31/NT31C

Section 1-2

Screen Data Check

Function

Screen data can be checked simply by operations at the NT31/NT31C system

menu, without connecting up to the Support Tool.

Increased Screen Data

Capacity

The data capacity of 1 MB is twice that of the NT30/NT30C, enabling storage of a

larger quantity of screen data.

Large Increase in

Maximum Number of

Registered Elements

The number of elements that can be registered on one screen has been consid-

erably increased, making it possible to create more expressive screens. For de-

tails, refer to Display Restrictions in Appendix A Specifications of the

NT31/NT31C/NT631/NT631C Programmable Terminal Reference Manual.

Binary Data can be Read

to/Written from the Host

It is now possible to write binary data stored in words at the host directly to the

NT31/NT31C. This makes data conversion by a program at the host unneces-

sary, reducing the load on the host.

Character Display Using

High Definition Fonts

Any quadrupled characters are displayed with a 32 dot high-definition font.

Simple Version Upgrades

By using the system installer supplied with the Support Tool (Type NT-

ZJCAT1-EV4), the system program at the NT31/NT31C can be changed easily

from a personal computer.

Complies with

International Standards

The NT31/NT31C meets UL/CSA standards and EC directives.

Compatible with Other

Vendors’ Devices

Compatible with Sequencers in the following series: Mitsubishi A-series (Calcu-

lator Link) and FX-series (Programming Console), Allen-Bradley SLC 500 Se-

ries, GE Fanuc 90-20 and 90-30 Series, and Siemens S7-300 and S7-400 Se-

ries. Specialized system programs can be installed that allow the NT31/NT31C

to be controlled from other companies’ Sequencers.

Multiple Windows

Up to 3 windows can be displayed simultaneously in the normal screen. A

9-word window control area has been allocated to the host; the contents of these

9 words can be changed from the Host to open, close, and move windows.

1-2-2 Comparison between NT31 and NT31C

Two NT31 models — the NT31, which is capable of versatile graphic displays,

and the NT31C, which is also capable of color display — are available. The dif-

ferences between the NT31 and NT31C are tabled below:

Function

Type

NT31

NT31C

NT31-ST121-EV2 (Beige)

NT31-ST121B-EV2 (Black)

NT31C-ST141-EV2 (Beige)

NT31C-ST141B-EV2 (Black)

Display panel STN monochrome LCD display

type (with white backlight)

STN color LCD type

(with white backlight)

Beige and black are the front panel colors of each NT31/NT31C types.

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Functions of the NT31/NT31C

Section 1-2

1-2-3 Additional Functions of the V2 Versions

The V2 versions of NT31/NT31C are supplemented and enhanced by the fol-

lowing functions.

High-speed 1:N NT Link

The V2 versions are compatible with the high-speed 1:N NT Link as well as the

earlier standard 1:N NT Link.

Additional Mathematical

Functions

Operands (values referenced by formula) can be registered to allow the PT to

perform calculations automatically and write the results of those calculations to

numeral memory tables or words in the host.

Device Monitor Function

Interlock Function

The new device monitor function can be used to change the PC’s operating

mode or display/change values in the PC’s memory areas. The present values

(PVs) of several words can be listed with the device monitor.

PT operations and inputs can be disabled from the PC if interlock bits have been

allocated in the PC for the corresponding PT touch switches, numeric inputs, or

string inputs.

Improved Lamp/Touch

Switch Labels

The following displays can be performed with lamp or touch switch labels:

• Display several lines of labels.

• Switch the display between different labels when OFF and ON.

• Display the numeral memory table contents as labels.

• Display the string memory table contents as labels.

NT30/NT30C and

NT620S/NT620C/NT625C

Emulation

The word configuration of the PT status control area and PT status notify area

can be set to emulate those of the NT30/NT30C or NT620S/NT620C/NT625C;

this mode is called NT30/620 compatible mode.

When the PT is operating in NT30/620 compatible mode, it will be equivalent to

an NT30/NT30C or NT620S/NT620C/NT625C in the functions listed below. The

PT retains full V2 functionality in all functions other than the ones listed below.

Refer toAppendix C in the NT31/NT31C/NT631/NT631C Programmable Termi-

nal Reference Manual for more details.

• Word configuration and functions of the PT status control area and PT status

notify area

• Image/library codes

• Insertion of image/library data into character strings

Additional CS1 Data

Areas Accessible

Data areas in CS1 PCs that were previously inaccessible can be accessed. The

data areas listed below can be accessed (read/written).

All banks in the EM area, timer completion flags (TU), counter completion

flags (CU), Work areas (WR), Task flags (TK), and the HR area.

Recipe Function

You can set the data (numeric values) for multiple words in record units using the

tabular elements on the PT screen, and write these settings in a single operation

to words on the host (i.e., PC or PT memory) using a touch switch operation on

the PT Unit. Also, multiple words of numeric data can be read from the host in

one operation. In this way, groups of parameter settings can be edited at the PT

Unit, and written to or read from the host.

Adjusting Contrast and

Brightness During PT

Operation

You can display the brightness and contrast adjustment screen using either the

touch switch or commands from the host, even while the PT is in operation.

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Functions of the NT31/NT31C

Section 1-2

1-2-4 Comparison between NT30/NT30C and NT31/NT31C

Item

Support Tool used

NT30/NT30C

NT-ZJCAT1-EV4 or NT-ZA3AT-EV2

On rear of unit

NT31/NT31C

NT-ZJCAT1-EV4

DIP switches

None (software settings)

Not possible

Use of B7A unit

Use of memory unit

RS-232C interface

Possible

Not possible

Possible

Connector (9-pin) also used as port for - Serial port A connector (also used

screen data transfer.

for screen data transfer, 9-pin)

- Serial port B connector (for host

communications only, 25-pin)

RS-422A/485 interface

Terminal block

Serial port B (25-pin D-SUB connector)

Replacement backlight

NT30-CFL01/NT30C-CFL01

NT31C-CFL01 (common use)

NT31/NT31C system program data

NT-ZS3AT-EV1

(including system installer)

The system installer and system pro-

gram data are supplied with the Sup-

port Tool.

High-speed 1:N NT Link

Not possible

Possible*

Memory Link

System program Exclusive use by Memory Link

Same as OMRON connection

Exclusive use by Memory Link

By touch panel operation

Maximum of 3999

Screen data

Shared with OMRON connection

By a control on the rear of the unit

Not possible

LCD contrast adjustment

Backlight brightness adjustment

Number of user-registered screens

Maximum of 2000

Screen data capacity*2

(User program memory)

Numeral string data

512 KB

1 MB

Maximum of 1000

256

Maximum of 2000

Maximum of 1000

Character string data

Bit data

Mathematical tables

None

256 max.

Calculations can be executed

automatically in the PT.

Image data

Library data

Maximum of 224

Maximum of 4095

Maximum of 896

Maximum of 12288

Method for storing numeric values

(numeral memory data and PT status

control area)

Fixed as BCD (binary coded decimal)

Selectable from BCD (binary coded

decimal) or binary

PT status control area size

PT status notify area size

Window control area size

Registering continuous screen

4 words

3 words

None

5 words (partial change of contents)*

2 words (partial change of contents)*

9 CH*2

Possible

Not possible (Use a screen switchover

as a substitute.)

Lamp/Touch switch labels

Fixed display (1 line only)

- Multiple lines can be displayed

- ON/OFF switching is possible

- Numeral display is possible

- Character string display is possible

Interlock function

None

Operations can be disabled from the

PC by allocating interlock bits to the

corresponding touch switch, numeral

input, or character string input.

Device monitor function

Not possible

Possible

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Functions of the NT31/NT31C

Section 1-2

Item

Recipe function

NT30/NT30C

NT31/NT31C

None

---

Possible

Accessible CS1 PC data areas

The data areas listed below can be

accessed in addition to the data areas

accessible with the NT30/NT30C.

- EM banks (EM_0 to EM_C)

- Timer completion flags (TU)

- Counter completion flags (CU)

- Work areas (WR)

- Task flags (TK)

- HR area

*1: These functions are available only in V2 versions of the NT31/NT31C.

*2: This is the capacity of the flash memory that stores screen data.

*3: The values are the same as the NT30/NT30C when the PT is in NT30/620 compatible mode.

*4: The window control area can be used only in the Vj versions of the NT31/NT31C.

For differences in programming, refer to Appendix B in the NT31/NT31C/NT631/NT631C Programmable Terminal Refer-

ence Manual.

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Functions of the NT31/NT31C

Section 1-2

1-2-5 Principal Functions of NT31/NT31C

The following are the principal functions of the NT31/NT31C.

Functions relating to data display

Character display

Characters of various sizes can be displayed. Characters can be flashed and displayed in reverse

video. High grade fonts are available for the characters with their size enlarged.

Graphic display

Polylines, rectangles, polygons, circles, circular arcs, and sector shapes can be displayed. They can

also be tiled with various patterns, flashed, or displayed in reverse video.

Memory data display

The contents of character string memory tables and numeral memory tables can be displayed. The

contents of memory tables can be changed from the host.

Graph display

Not only bar graphs but also broken line graphs, trend graphs, and analogue meter graphs can be

displayed using numeral memory tables

Lamp display

Lamps can be turned on and flashed under the control of the host. It is also possible to display different

graphics in the ON and OFF states.

Alarm list/history display

Warning messages are automatically displayed in a list in response to the state of a host bit. The time

and the number of times of the messages appeared can also be displayed.

Functions relating to data output

Buzzer

A built-in buzzer can be sounded.

Screen printing

A hard copy of the currently displayed screen can be printed at the printer

connected to the NT31/NT31C.

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Section

Functions relating to data input

Input by touch switches

Data can be input by simply touching touch switches displayed on the screen.

The possible functions of touch switches include sending data to the host and changing the screen display.

Inputs can be enabled and disabled from the host when interlock bits have been allocated.

Pop-up window function

A window overlaying the currently displayed screen can be alternately opened and closed by pressing a touch switch.

In addition to fixed character and graphic displays, control keys and character keys created as touch switches can also be set inside the

^{window. A maximum of three windows can be displayed simultaneously}. Since the window need only be opened when input is required,

the screen can be used efficiently.

Numeral/character string setting function

Numeric keys and character keys can be assigned to touch switches so that numeric values and character strings can be input at the

operation site.

The input data is written to numeral/character string memory tables and also sent to the host. It is also possible to disable input by control

from the host.

Recipe function

Several words of numeric data can be edited at the PT Unit, and written to or read from the host in one operation.

Input from a bar code reader

Data read with a bar code reader can be input to a character string input field.

Functions relating to communication

Communications with the host

The NT31/NT31C can communicate with the host by four methods: host link, 1:1 NT Link, 1:N NT link (standard or high-speed), and

Memory link. Data can be read from the host, and data input by means of touch switches and numeral/character string settings can be

sent to the host. It is also possible to connect with other model PCs.

Functions relating to the system

System menu

System settings and maintenance can be performed by selecting from system menus displayed on the screen.

Creation of screen data

Screen data created using the Support Tool at a personal computer can be transferred and stored in the built-in screen data memory.

Resume function

The status and memory table contents of the NT31/NT31C immediately before its operation is stopped can be stored while operation is

stopped, or while the power is off, and then displayed on the screen again when operation is restarted.

Screen saver function

This function serves to extend the service life of the backlight and prevent the formation of an afterimage on the screen.

Clock function

The time can be displayed in accordance with the internal clock data.

Programming Console function

The PT can perform the same operations as a C200H-PR027-E Programming Console when the PT is connected to a CPM1, CPM2A,

CPM2C, CQM1, CQM1H, C200HX/HG/HE-(Z)E, or SRM1 PC in a 1:1 NT Link connection, or a CS1G/CS1H PC in a 1:N NT Link con-

nection.

Device Monitor function

When the PT is connected to a PC in a 1:1 NT Link or 1:N NT Link, the PT can be used for operations such as changing the PC’s operat-

ing mode, displaying or changing the PVs of words, or reading the error log.

System program install function

The system program of the NT31/NT31C can be changed by using the system installer supplied with the Support Tool (NT-

ZJ3AT1/ZJCAT-EV2). It can also be installed by using a memory unit (NT-MF261).

Screen display history function/alarm history function

The screen display history function records the time at which specific screens are displayed and the number of times they are displayed.

The alarm history function records the time at which specific bits at the host are turned ON and the number of times they are turned ON.

Trend graph logging function and background function

Changes in the contents of numeral memory tables displayed in trend graphs can be recorded (logging function). Also, the record can be

maintained even when the trend graph is not displayed (background function).

Mathematical function

This function allows calculations to be executed continuously during PT operation when mathematical table has been set in screen data.

Arithmetic operations, bit operations, logic operations, and comparison operations can be performed. Operations with up to 5 terms are

possible.

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Section

1-2-6 Displays

The NT31/NT31C can display various kinds of elements such as characters, nu-

meric values, graphs, lamps, and touch switches, on a screen. The screen data

displayed by the NT31/NT31C are created by using the Support Tool at a per-

sonal computer.

Characters

(fixed display)

Restart

Stop

Touch switches

Characters

Line 1 Status

Machine name: NT31C-ST141

Production qty.: 137 units

(character string display)

Numeric values

(numeral display)

Bar graph

25%

50%

100%

Lamps

Check 1

Check 2

Stage 1

Stage 2

Fixed Displays

Characters and various graphics (circles, circular arcs, sectors, polylines, poly-

gons and rectangles) whose display does not have to be changed, and mark

data, image data, and library data that has already been registered, can be writ-

ten directly onto the screen.

Circle

Arc

Sector

Polyline

Polygon

Rectangle

* A continuous straight line with

up to 256 points can be drawn.

* A polygon with up to 255

vertices can be drawn.

Marks are graphics comprising 16 by 16 dots that can be used as characters.

They can be used as custom characters within character strings.

Image data are graphics comprising any required area of dots. They are regis-

tered in advance and as many as required can be displayed at any position on

the screen.

Windows bit map (BMP) data can be used for images.

There is a two-color mode, in which the display color and background color of the

image are specified when it is registered in a screen, and an eight-color mode in

which colors are assigned to the image in advance.

Since image data is composed of dots, it requires a large data size but offers

great powers of expression.

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Section

Library data are combinations of fixed display graphics registered as a single

graphic. They are registered in advance and as many as required can be dis-

played at any position on the screen.

Since it is generated by combining graphics, library data has a small data size.

Mark Image data Library data

Lamps

These are graphics whose display status changes in accordance with the states

of bits at the host. Squares, circles, sectors and polygons can be used for lamps

(normal (standard) lamps). In accordance with the status of the host bit, they can

be lit (displayed in reverse video) or flashed (repeated alternation between nor-

mal and reverse video display states).

Lamps can also display different image/library data for the ON and OFF states of

the host bit (such lamps are called image/library lamps).

There are four standard lamp labels: fixed display character strings, ON/OFF

switching character strings, numeral displays, and character string displays.

When fixed display character strings or ON/OFF switching character strings are

used, several lines of labels can be displayed.

Normal (Standard) Lamps

Host

Unlit state

Lit state

Image Library Lamps

Host

Unlit state

Lit state

Touch Switches

These switches can be set at any location on the screen. Pressing a touch switch

on the screen where a touch switch has been set can have the following effects:

• Notification to a host bit (input notification function)

• Changing the displayed screen (screen switching function)

• Input of a numeric value or character string (input key function)

• Copying of a numeric value or character string (copy key function)

• Shifting to another numeric value or character string input field (cursor moving

key function)

• Obtaining a hard copy of the screen (screen print function)

• Opening / Closing a window

• Moving a window

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Section

Touch switches can be made to light or flash in accordance with the status of a

host bit in the same way as lamps.

The following 8 types of display graphic can be used for touch switches: Stan-

dard, shadow, 3-dimension, no display frame, rectangle, circle, polygon, sector

When rectangle, circle, polygon, or sector is selected as the shape, the area

within which pressing of the touch switch is sensed (the touch switch area) can

be set independently of the position where the display graphic is set.

When this

Shown

position is

Touch

switch area

pressed...

reverse

video

Display

frame

Function executed

There are four touch-switch labels: fixed display character strings, ON/OFF

switching character strings, numeral displays, and character string displays.

When fixed display character strings or ON/OFF switching character strings are

used, several lines of labels can be displayed.

Numeral Displays

Numeric values stored in the numeral memory tables are displayed. The dis-

played numerals can be changed by changing the data stored in the numeral

memory tables.

Hexadecimal values can also be displayed.

When decimal values are displayed, the number of digits for the integral part and

fractional part of displayed values can be specified in advance.

String Displays

Numeral Inputs

Character strings stored in the character string memory tables are displayed.

The displayed character strings can be changed by changing the data stored in

the character string memory tables.

Numeric values can be input at the PT by using touch switches. The input nu-

meric values can also be stored in a numeral memory table and notified to the

host.

Numeral inputs can be enabled and disabled from the host when an interlock bit

has been allocated.

12345678

7 8 9

4 5 6

1 2 3

Input

0 .

Window

String Inputs

Character strings can be input at the PT by using touch switches, bar code read-

ers, etc. The input character strings can also be stored in a character string

memory table and notified to the host.

String inputs can be enabled and disabled from the host when an interlock bit

has been allocated.

Character string setting input field

Display

NT31C

Input

NT31C NT31

NT631C

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Section

Thumbwheel Switches

Numeric values can be input by incrementing or decrementing each digit with

the corresponding touch switch (+, –). The input numeric values can also be

stored in a numeral memory table and notified to the host.

Thumbwheel switch inputs can be enabled and disabled from the host when an

interlock bit has been allocated.

Graphs

These are graphics whose display changes in accordance with the numeric val-

ues stored in numeral memory tables. There are the following four types.

Bar Graphs

Bar graphs display the present value in a numeral memory table converted to a

percentage within the range –100% to +100% of a preset value.

60%

Analog Meters

Analogue meters display, using a quarter, half, or full circle shape, the present

value in a numeral memory table converted to a percentage within the range

–100% to +100% of the preset value. Users can choose from moving pointer

type and filling area type displays. Users can also add graduation to the graph.

60%

Broken Line Graphs

Broken line graphs display, in an easy-to-read form, a sequence of numeral

memory table values converted to a percentage within the range –100% to

+100% of a preset value.

100%

Example showing a series of 11

numeral memory table values

(with a check mark set for the

display sign)

–100%

Trend Graphs

Trend graphs display chronological changes in the value in a numeral memory

table, converting the value to a percentage within the range –100% to +100% of

a preset value. The trend graph shifts position with the passage of time.

Past data can also be recorded, and the numeral memory table can be read

(sampled) even while the trend graph is not being displayed.

The user can choose to stop sampling, restart sampling, or display past data, by

pressing touch switches.

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Section

Alarm List/History

The alarm list/history function displays messages in list form, or graphics

(image/library data), in accordance with changes in bit memory table statuses.

For the alarm list, a series of bit memory tables are monitored, and messages

(contents of character string memory tables) set for bit memory tables that come

ON are displayed.

For the alarm history, bit memory tables for which the history property is set are

continually monitored, and the time when they come ON and number of times

they come ON are recorded and displayed together with the message (charac-

ter string) set for the bit memory table.

The NT31/NT31C allows selection of the display order as the newest record first

or the oldest record first by memory switch setting.

The alarm list function is used to determine which bits are ON at the present

time. The alarm history function is used to determine the times at which alarms

occurred in the past and how many times alarms have occurred.

Alarm List

Message (character string table No. 32)

set for bit memory table No. 14

No.13

Character string table No. 50

Image/library data 1002

Bit

HOST

1(ON)

Character string table No. 32

A000000

L001003

D010015

No.14

No.15

Character string table No. 32

Image/library data 113C

Character string table No. 54

Image/library data 1125

Image/library

data 113C

When the message displayed is pressed, the image/library

data (113C) set for bit memory table No. 14 is displayed.

Alarm History

Message (character string table No. 13)

set for bit memory table No. 24

Recorded data

Character string table No. 11

Image/library data 005F

Bit memory table No. 24

97/12/04 11:19:20

No. 22

Character string table No. 13

Character string table No. 12

No. 23

Bit memory table No. 23

97/12/04 11:25:12

Character string table No. 12

Image/library data 102A

Image/library

data 102B

Character string table No. 13

Image/library data 102B

No. 24

When the upper message displayed is pressed, the image/library

data (102B) set for bit memory table No. 13 is displayed.

Recipe

You can set several words of numeric data at the PT in tabular format, and write it

to the host. You can also read several words of numeric data from the host and

display it on the PT screen.

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System Configuration

Section 1-3

1-3 System Configuration

This section shows the configuration of a system that uses an NT31/NT31C. For

details on product models, refer to Appendix J Model List (page 277).

1-3-1 Peripheral Devices That Can Be Connected

The following peripheral devices can be connected to an NT31/NT31C.

Host

Controls the NT31/NT31C as required while controlling machines and

monitoring the production line.

Host Link: C series, CVM1/CV series PC, SRM1

Can be connected to CPU units, host link units, and SRM1. However,

connection is not possible to some models of CPU unit and SRM1 (pages 54

and 101).

Bar code reader

Bar codes can be read

as character strings.

NT Link: CS1G/CS1H, CPM1, CQM1, C200HS, C200HX/HG/HE(-ZE),

CVM1/CV series PCs, SRM1

RS-232C cable

(max. 15 m)

Can be connected to CPU units and SRM1. However, connection is notpossible

to some models (pages 67, 72, 111 and 113).

RS-422A/485 cable

(max. 500 m)

Memory Link: Can be connected to a personal computer, FA computer, etc.

Other companies’ PCs can also be connected.

Personal computer

Printer

For printing out the

currently displayed

NT31/NT31C screen.

Running Windows 95/98/NT

Support Tool

Used to create screens for the

NT31/NT31C at the personal

computer and transmit them to the

NT31/NT31C, and to make

NT31/NT31C settings.

System installer

Used to change the system

program of the NT31/NT31C.

Memory unit

Can store screen data

and system program to

be read out

NT31/NT31C

Displays production line monitoring and

instructions to the operation site, and

notifies the switch ON/OFF status and

numeric value inputs to the host.

automatically at startup.

When a 1:N NT Link is being used, up to

8 PTs can be connected to a single PC.

• Bar code reader (page 37)

• Recommended printers (page 36)

It is also possible to use printers that can emulate an NEC PC-PR201H (us-

ing the NEC PC-PR201PL control protocol), and printers that comply with

one of the following EPSON control standards: ESC/P 24-J83C (color), or

ESC/P 24-J82 (monochrome).

• Memory unit (pages 39 and 47)

NT-MF261 (made by OMRON)

• Support Tool (page 35)

NT-series Support Tool Version 4.0 for Windows (Made by OMRON)

• NT-ZJCAT1-EV4 (CD-ROM version)

• System installer (page 35)

System installer (made by OMRON)

The system installer is supplied as a standard accessory with the Support

Tool (NTZJCAT1-EV4).

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Communications with the Host

Section 1-4

Reference: The following optional devices are available. All of them can be used either with

NT31 or NT31C.

Replacement backlight

NT31C-CFL01

Reflection-suppressing protective sheet NT30-KBA04

Chemical-resistant cover

Replacement battery

NT30-KBA01

3G2A9-BAT08

1-3-2 Connecting to the Host

The NT31/NT31C has the following two communication ports.

• Serial port A:

D-SUB 9-pin connector

For RS-232C use only (The Support Tool and bar code readers can be con-

nected here.)

• Serial port B:

D-SUB 25-pin connector

For RS-232C or RS-422A/485 (Selectable by memory switch)

(The Support Tool and bar code readers cannot be connected here.)

The host can be connected at either of these two ports.

The connection methods for each communication method at the PT and host

sides are indicated below. Make the settings in accordance with the communica-

tion method that can be used with the PC to be connected and the conditions at

the operation site.

Reference: When using an RS-232C/422A convertor unit (NT-AL001) with the host link or NT

link (1:1) communication method, RS-485 cannot be used. The connection must

be made with RS-232C or RS-422A.

1-4 Communications with the Host

The NT31/NT31C is connected to the host by one of the following communica-

tion methods.

The following communications can be used to connect an OMRON PC:

• Host link

• 1:1 NT Link

• 1:N NT Link (standard or high-speed)

The following communications can be used to connect another companies’ PC

or FA computer:

• Communications protocol supported by the other company’s PC

• Memory link

In all of these communication methods that can be used with NT31/NT31C, data

communication with host is by direct connection (Memory link is, however, a

quasi-direct connection).

In the following, the host link and NT link that carry out the direct connection will

be discussed. Memory links will be explained in 1-5 Communications Using

Memory Links.

1-4-1 Direct Connection Function

With the NT31/NT31C, the bits and words referring to data required for display,

and those for storing input data, can be allocated to any part of the PC memory

area.

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Communications with the Host

Section 1-4

The NT31/NT31C can directly write to and read from such allocated bits and

words to change the display status of the elements on the PT screen, control the

PT operating status, and notify statuses to the host.

This function, which directly reads and writes the statuses of words and bits with-

out using a PC program is called the direct connection function.

The words and bits allocated for direct connection are called the allocated words

and allocated bits.

The direct connection function allows the data to be displayed at the

NT31/NT31C to be read from the memory area in the PC and written to memory

tables in the NT31/NT31C. Also, the data input at the NT31/NT31C can be writ-

ten to the memory area in the PC. The NT31/NT31C screen can be changed in

accordance with statuses in the PC memory area, and the NT31/NT31C’s status

data can be written to the PC’s memory area.

NT31/NT31C

DM area

I/O relay area

Auxiliary relay area Timers/counters

Features of the Direct

Connection Function

The direct connection function has the following features.

• The bits and words referring to operating status and work instruction informa-

tion and those for storing input data can be freely allocated to almost any area

of the PC memory.

• Since the NT31/NT31C can directly refer to PC bit and word data without using

the program at the PC, it can be connected to the PC without changing the PC

program which controls the currently running production line.

• The area to control and notify the NT31/NT31C statuses, including display

screens, display/no display status, and buzzer output, can be freely allocated

to any part of the PC data area. This means that the PC status can be read and

controlled just by reading this area at the PC side, without preparing a special

communication program.

The direct connection function allows the NT31/NT31C to directly read and write

almost all bits and words in the PC and to automatically change the

NT31/NT31C screen display. This function can reduce the load on the PC so that

its program development efficiency is improved.

1-4-2 Host Link

1-4-3 NT Link

The host is connected to a PT in a 1:1 connection, and the words and bits of the

host are read and displayed by host link communication. This method can be

used for connection to the majority of PC types.

NT link is a method for high-speed communication with a PC using the direct

connection function. The PCs that can be connected with the NT link are as fol-

lows.

• When using the built-in host link function of a CPU unit or SRM1:

CPM1, CPM2A, CPM2C, CQM1, CQM1H, C200HS, C200HX/HG/HE(-Z)E,

CS1G/CS1H-E(V1), CVM1/CV-series PC (-EV1 or later version), SRM1

Besides the 1:1 NT Link method, in which one PC is connected to one PT, the

NT31/NT31C can also use the 1:N connection NT Link method, which allows a

maximum of eight PTs to be connected to one PC port.

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Communications with the Host

Section 1-4

PCs that can be connected with the 1:N connection NT Link method are as fol-

lows: CQM1H, C200HX/HG/HE (-Z)E, CS1G/CS1H-E(V1).

The NT31/NT31C also supports OMRON’s high-speed 1:N NT Link that pro-

vides faster 1:N communications. The only PCs that support the high-speed 1:N

NT Link are the -EV1 and higher versions of the CS1G/CS1H PCs.

In the following sections, the term NT Link is used to refer to the NT Link commu-

nication method in general, the term 1:1 NT Link is used to refer specifically to

NT Links with a 1:1 connection, and the term 1:N NT Link is used to refer to both

standard and high speed NT Links with 1:N connections. When necessary, the

standard 1:N NT Link is distinguished from the high-speed 1:N NT Link.

Features of the NT Link

The NT link has the following features.

• High-speed communications with specific types of PCs can be executed. The

NT31/NT31C also supports OMRON’s high-speed 1:N NT Link.

• Writing in units of bits to the PC memory area is possible.

This enables the other bits of words to which a touch switch has been allo-

cated to be allocated for other purposes (e.g. a lamp).

However, since data is written to the DM area in word units, the other bits of

words allocated to touch switches in this area cannot be used for other pur-

poses.

• The NT link can be used even when the PC is in the RUN mode. (When the host

link method is used, the NT31/NT31C switches to the monitor mode when the

PC is in the RUN mode.)

• In the case of PTs that support the standard 1:N NT Link (NT20S, NT31,

NT31C, NT600S, NT620S, NT620C, NT625C, NT631, NT631C) up to 8 PTs

can be connected to one port of the PC and used at the same time. Up to 8 PTs

(NT31, NT31C, NT631, and NT631C) can also be connected simultaneously

when the high-speed 1:N NT Link is being used.

All of the PTs connected to a PC port must use either the standard or high-

speed 1:N NT Link; the two communications systems cannot share a single

port.

• When using a C200HX/HG/HE-(Z)E PC and standard 1:N NT Links, up to

three 1:N NT Link systems (i.e., 24 PTs) can be connected by installing a com-

munication board in the option slot of the CPU. (Only the standard 1:N NT Link

can be used.) For details on the Communications Board, refer to the SYSMAC

Communications Board Operation Manual (W304-E1-j).

• When using a CQM1H PC and standard 1:N NT Links, multiple 1:N NT Link

systems can be connected by installing Serial Communications Boards in the

Inner Board slots. For details on the Serial Communications Board, refer to the

CQM1H Serial Communications Board Operation Manual (W365-E1-j).

• When using CS1G or CS1H PC, multiple 1:N NT Link systems (standard or

high-speed) can be connected by installing a Serial Communications Board in

the INNER Board slot or installing a Serial Communications Unit in the Back-

plane. For details on the communication board/communication unit, refer to

the CS1-series Serial Communications Board/Unit Operation Manual

(W336-E1-j).

• If the PC used supports the Programming Console function, the NT31/NT31C

can be used as a Programming Console.

• If the PC being used supports the Device Monitor function, the NT31/NT31C

can be used to change the PC’s operating mode and read/change data in the

PC’s memory areas.

The NT link is compatible with the host link. The NT31/NT31C screen data and

PC programs used with the host link direct connection method can be used with

the NT link method as they are.

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Communications Using Memory Links

Section 1-5

1-4-4 Connecting to other Companies’ PCs

Installing a system program for multi-venders by using a specific system installer

enables the NT31/NT31C to be connected to the PCs of other models in direct

connection. This system installer is supplied with the Support Tool (NT-

ZJCAT1-EV4).

Compatible PC

The NT31/NT31C can be connected to the following model PCs.

• Mitsubishi A series programmable controller (computer link module)

• Mitsubishi FX series programmable controller

• SLC 500 Series by Allen-Bradley

• 90-20 and 90-30 Series by GE Fanuc

• S7-300 and S7-400 Series by Siemens

For details on the procedure for connecting to other model PCs, refer to the PC

Connection Manual or NT31/631 Multi Vendor Connection Manual.

1-5 Communications Using Memory Links

In this section, a communication method other than the direct connection, called

the memory link, is discussed.

1-5-1 Memory Link

Memory link is a method to send and receive data between a personal computer

or a FA computer and the NT31/NT31C by using RS-232C/422A communica-

tion.

In memory link, there is an area called PT Memory, as shown below, inside the

NT31/NT31C, and this area is treated as a virtual area on the PC. This allows PT

memory and the display elements of the NT31/NT31C to make a quasi-direct

connection. By sending a command for the memory link, the host can make the

NT31/NT31C execute processes through PT memory. Frequently used com-

mands are kept handy for read and write tasks of the numeral memory table,

character-string memory table, and bit memory table.

NT31/NT31C

PT memory

Numeral

memory

table

Lamp

Direct connection

RS-232C/422A

communication

In the memory link method, the only difference is that the NT31/NT31C finds its

communication target inside instead of outside. In the memory link method,

therefore, change of the target is all that is needed to be capable of using the

exact screen data that is acquired by the direct connection. (With the

NT31/NT31C, the Support Tool must be used to convert the data to screen data

for the memory link.)

When compared to the direct connection of the host link or NT link methods, the

memory link method has some restrictions regarding the use of some functions,

as described below.

• The Programming Console and Device Monitor functions cannot be used.

• The following strobes of PT status notify bits does not turn on (page 7 to 27).

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Communications Using Memory Links

Section 1-5

Screen switching strobe

Numerals input strobe

Character-string input strobe

• The usable area for allocation is the PT memory only.

1-5-2 Comparison between Direct Connection and Memory Link

The major differences between the direct connection and the memory link are as

follows:

• In the memory link method, the communication with the host should be carried

out by using commands. Compared to the ordinal direct connection, which can

be used requiring almost no programs, the memory link method requires a pro-

gram that is necessary for interchange of commands. This, however, gives ad-

vantages to the memory link method by using a large variety of functions avail-

able in the direct connections from major models such as a personal computer

and a FA computer equipped with RS-232C/RS-422A communication means,

allowing the PT to be suited for larger usage.

• Actual PCs have many kinds of areas, where as PT memory is a single area

with only one kind. When creating screen data by using the memory link meth-

ods, it is always necessary to allocate display parts in the PT memory.

For communication between the host and the PT by the memory link method and

for handling screen display elements, refer to the NT31/NT31C/NT631/NT631C

Programmable Terminal Reference Manual.

1-5-3 Memory Link Online Transfer Function

When memory link communications are being used, the NT31/NT31C can be

switched to Transmit mode from the host even if the NT31/NT31C is operating

and screen data can be written. (The NT31/NT31C can be returned to RUN

mode after the screen data is written.)

The memory link online transfer function can be used to replace screen data at a

fixed time each day or replace screen data with maintenance screen data for

maintenance.

For more details on the memory link online transfer function, refer to information

on the memory link online transfer function in the NT31/NT31C/NT631/NT631C

Programmable Terminal Reference Manual.

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Before Operating

Section 1-6

1-6 Before Operating

Follow the procedure given below to start the system of the NT31/NT31C.

Host

Support Tool

NT31/NT31C

Set the host settings.

Install the Support

Tool at the computer.

Install the PT in the

operation panel.

• For the host link, refer to

pages 54 and 101, and

the manuals for the host

link unit and peripheral

tools.

(refer to the manual for

the Support Tool)

(page 32)

Connect the power supply.

(page 33)

• For the NT link (1:1), refer

to pages 67 and 111.

Install the system program.

(refer to page 151 and the

Support Tool manual)

• For the NT link (1:N), re-

fer to pages 72 and 113.

• For the high-speed NT

link (1:N), refer to pages

75 and 115.

Create the screens.

Make the settings in the

system installer mode.

(Refer to the NT31/NT31C/NT631/NT631C

Programmable Terminal Reference Manual

and the Support Tool Operation Manual.)

(page 151)

• For the Memory link, refer

to pages 72 and 116

(page 155)

Transmit the screen data.

Set the memory switches.

(page 157)

Connect to the host.

Connect to the

NT31/NT31C.

When RS-232C used at the PT: refer to section 4

When RS-422A/485 used at the PT: refer to section 5

Confirm the settings and

check communication.

Create the host program.

Start operation.

*1: System program installation is only done in special circumstances, for example

when changing the system program, or to recover the original status of the

installed program. This operation is not normally necessary. When using other PC

models (sequencers), however, it is necessary to install specific system programs.

*2: Display of the system menu, and all change operations, can be inhibited. This

enables you to prevent the accidental deletion or alteration of screens and

settings.

Reference: S For the system program, use the NT31/NT31C system program supplied as

an accessory with the NT-series Support Tool (NT-ZJCAT1-EV4).

S For the Support Tool, use NT-series Support Tool for Windows (Ver. 4.1).

Refer to the following manuals for the devices and software.

Device or Software

Manual Title

Manual

Number

NT31/NT31C,

Reference Manual

V064-E1-1

NT631/NT631C

System Installer

Support Tool

NT-series Support Tool for Windows (Ver. 4.1) Operation Manual

V061-E1-j

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Before Operating

Section 1-6

Device or Software

Manual Title

SYSMAC CPM1 Operation Manual

Manual

Number

W262-E1-j

W317-E1-j

W352-E1-j

W356-E1-j

W130-E1-j

W217-E1-j

W236-E1-j

W235-E1-j

W302-E1-j

W303-E1-j

W322-E1-j

W140-E1-j

W228-E1-j

W363-E1-j

W202-E1-j

SYSMAC CPM1A Operation Manual

SYSMAC CPM2A Operation Manual

SYSMAC CPM2C Operation Manual

SYSMAC C200H Operation Manual (for CPU01/03/11) (programming)

SYSMAC C200H Operation Manual (for CPU21/23/31) (programming)

SYSMAC C200HS Installation Guide

SYSMAC C200HS Operation Manual (programming)

SYSMAC C200HX/HG/HE (-Z) Installation Guide

SYSMAC C200HX/HG/HE Programming Manual

SYSMAC C200HX/HG/HE-Z Programming Manual

SYSMAC C1000H/C2000H Operation Manual (programming)

SYSMAC CQM1 Programming Manual

SYSMAC CQM1H Operation Manual

SYSMAC CVM1/CV500/CV1000/CV2000 Operation Manual: Ladder Dia-

grams

CS1-series CS1G/H-CPU jj-E Programmable Controllers Operation

W339-E1-j

Manual

CS1-series Serial Communication Boards/Units Operation Manual

W336-E1-j

SYSMAC CQM1H Series Serial Communications Board Operation Manual W365-E1-j

CompoBus Master Control SRM1 Operation Manual

Unit

W318-E1-j

Programming Devices

SYSMAC Support Software Operation Manual: C-series PCs

W248-E1-j

SYSMAC Support Software Operation Manual: CVM1 PCs

SYSMAC CPT User Manual and Quick Start Guide

W249-E1-j

W332-E1-j

W333-E1-j

CX-Programmer User Manual

Host Link Unit/

Serial Communications

Board

SYSMAC C-series Host Link Unit Operation Manual

SYSMAC CVM1/CV-series Host Link Operation Manual

W143-E1-j

W205-E1-j

SYSMAC C200HW-COM01 C200HW-COM02-V1 to C200HW-COM06-EV1 W304-E1-j

Serial Communications Board Operation Manual

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SECTION 2

Preparing for Connection

This section describes the connection methods that are possible with the PTs, and the functions of the parts of PTs, as the

required knowledge before connecting to the host and to the peripheral devices.

2-1 Method for Connection to the Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 Names and Functions of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Method for Connection to the Host

Section 2-1

2-1 Method for Connection to the Host

This section describes the methods for connection to the host used with the

NT31/NT31C, and the relationship between the connection method and the

communication method.

NT31/NT31C Communication Ports and Communication Methods

The NT31/NT31C has two communication ports. Their uses are indicated in the

table below.

Communication

Usable Communication Methods

Communication Type

Port

Host link

NT link (1:1)

NT link (1:N)

Serial port A

RS-232C

Memory link

(Support Tool connection)

(bar code reader input function)

Host link

NT link (1:1)

NT link (1:N)

Memory link

RS-232C

RS-422A/485

(select between RS-232C

and RS-422A/485)

Serial port B

* There are two NT Link (1:N) communications rates: standard and high-speed.

Communication Methods That Can Be Used with the Host

The following communication methods can be used with the hosts that can be

connected to the NT31/NT31C.

• RS-232C

• RS-422A

• RS-485

The communication types that are actually supported differ depending on the

host unit. For details, refer to Section 4 Connecting to the Host from the

RS-232C Port and Section 5 Connecting to the Host from the RS-422A/485 Port.

Converting the Communication Type with an RS-232C/RS-422A Convertor

Unit

The following communication type conversions are possible by using an

RS-232C/RS-422A convertor unit (NT-AL001-E, made by OMRON).

• RS-232C ⇔ RS-422A

• RS-232C ⇔ RS-485

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Method for Connection to the Host

Section 2-1

Combinations of Communication Method and Connection Method

The connection methods that can be used depending on the communication

method used and the communication type for communication between the

NT31/NT31C and the host are indicated in the table below.

Usable Communication

Method

Communica-

tion Type at

Communica-

tion Type at

Host

Usable Connection Method

Details

Link

Host

link

Memory

link

Link

(1:1) (1:N)

Direct 1:1 connection

Host

RS-232C

RS-232C (max. 15 m)

1:1 connection via a convertor unit

Convertor unit

(NT-AL001)

RS-232C

(max. 2 m)

RS-422A

(max. 500 m)

1:N connection via a convertor unit

RS-232C

Host

Convertor unit

(NT-AL001)

RS-422A

RS-232C

(total length 500 m) (max. 2 m)

RS-422A

Direct 1:1 connection

Host

117

122

RS-422A (max. 500 m)

1:N connection

Host

RS-422A

RS-422A (total length 500 m)

f: Connection possible : Connection not possible

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Method for Connection to the Host

Section 2-1

Usable Communication

Method

Communica-

tion Type at

Communica-

tion Type at

Host

Usable Connection Method

Details

Link

Host

link

Memory

link

(1:1) (1:N)

1:1 connection via a convertor unit

Convertor unit

(NT-AL001)

Host

RS-485

(max. 500 m)

RS-232C

(max. 2 m)

1:N connection via a convertor unit

RS-232C

Host

Convertor unit

(NT-AL001)

RS-485

RS232C

(total length 500 m)

(max. 2 m)

RS-485

Direct 1:1 connection

Host

121

125

RS-485 (max. 500 m)

1:N connection

Host

RS-485

RS-485 (total length 500 m)

f: Connection possible : Connection not possible

• The RS-232C/RS-422A convertor unit (NT-AL001) requires +5 V, 150 mA at

pin 6 of the RS-232C connector. Check the signals of the RS-232C connector

at the host.

• +5 V is not output from serial port B of the NT31/NT31C. When connecting an

NT-AL001 at serial port B, a separate power supply is required for the NT-

AL001.

• The cable of an NT-AL001 cannot be connected or disconnected while the

power is ON. Always connect or disconnect the cable while the power supply

from the RS-232C cable is OFF (while the host power supply is OFF).

• NT link (1:N) connection is possible even when RS-232C is used at the

NT31/NT31C side for communication with the host, but in this case one NT-

AL001 unit is required for each NT31/NT31C. In this case, it is convenient to

use serial port A of the NT31/NT31C. +5 V is not output from serial port B.

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Names and Functions of Parts

Section 2-2

2-2 Names and Functions of Parts

Before starting operation, the names and functions of the parts of the

NT31/NT31C are described here as a confirmation. A method of hardware set-

tings is also described.

Front View

POWER LED

Lit in green when the power is supplied.

POWER

RUN

RUN LED

Display

The NT31 has a monochrome LCD

screen with a backlight, and the NT31C

has an STN color LCD screen with a

backlight.

The whole area of the screen is a touch

panel which works as an input device.

• Lit in green while the unit

is in the RUN mode.

• Lit in orange or red when

the battery is low (orange

in the RUN mode, red in

other modes).

Reference: The NT31/NT31C comes in two body colors.

NT31

NT31C

Body Color

Beige

NT31-ST121-EV2

NT31-ST121B-EV2

NT31C-ST141-EV2

NT31C-ST141B-EV2

Black

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Names and Functions of Parts

Section 2-2

Rear View

Battery cover

The battery is secured underneath this cover.

Reset switch (inside the cover)

Used to initializes all the statuses of the NT31/NT31C.

However, registered data such as screen data, and memory

switch settings, retain their statuses before initialization.

Expansion interface connector

(under the label)

When using an expansion

interface unit such as a memory

unit, peel off the label and

connect it here.

GR terminal

Grounding terminal to prevent

malfunction due to noise.

24V

PRINTER

PORT

Power input terminals

Connect the power to the

NT31/NT31C at these

terminals.

Warning label

Backlight unit (inside the cover)

Open the cover to reveal the backlight.

The backlight is off while the cover is

removed. Tighten the cover screw

securely.

Serial port A connector

Connect the cable for connection to the

host or Support Tool here. A bar code

reader can also be connected here. This is

a 9-pin connector for RS-232C use only.

Serial port B connector

Connect the cable for connection to the host here. Depending on the

setting made at the NT31/NT31C system menu, either RS-232C or

RS-422A/485 may be used. This is a 25-pin connector.

It is not possible to use RS-232C and RS-422A/485 at the same time.

Printer connector

Connect the printer cable here. Output

conforms to Centronics specifications.

Note Confirm system safety before turning the power ON/OFF or resetting.

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SECTION 3

Hardware Settings and Connections

This section describes the settings of the PTs and methods for connection to peripheral devices.

For details on connecting to the host, refer Section 4 Connecting to the Host from the RS-232C Port or Section 5 Connecting to

the Host from the RS-422A/485 Port.

3-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-1 Installation Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-2 Installation in the Operation Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-3 Power Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-4 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 Connecting to the Support Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3 Connecting a Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3-1 Connection Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4 Connecting a Bar Code Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4-1 Connection Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4-2 Setting a Bar Code Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4-3 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5 Using a Memory Unit (-Vj Versions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5-1 Installation Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5-2 Method of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6 Using a Memory Unit (Versions without the -Vj Suffix) . . . . . . . . . . . . . . . . . . . . . . . . .

3-6-1 Installation Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6-2 Method of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Installation

Section 3-1

Note On unpacking the NT31/NT31C and peripheral devices, check their external ap-

pearance and confirm that there is no damage. Also confirm that there is no ab-

normal noise on shaking the unit lightly.

3-1 Installation

Install the NT31/NT31C in the operation panel and connect the power to the

NT31/NT31C as described below.

3-1-1 Installation Environment

Observe the following points when installing the PT in an operation panel.

Note 1. Do not install the unit at sites subject to the following conditions.

• Severe temperature variations

• Temperatures or humidities outside the ranges stated in the specifications

• High humidity, condensation

• Splashing chemical agents

• Severe oil splashing

• Corrosive or flammable gases

• Strong vibrations or shocks

• Direct exposure to wind and rain (outdoor sites)

• Strong ultra-violet irradiation

2. Take adequate measures to ensure shielding if the unit is used at a location

subject to any of the following conditions.

• Static electricity, or noise from other equipment

• Strong electromagnetic fields

• Nearby power cables

• Potential exposure to radioactivity

3-1-2 Installation in the Operation Panel

The NT31/NT31C is mounted in an operation panel by embedding it in the panel.

Use the panel fittings and tool (Philips screwdriver) included in the product pack-

age and follow the procedure below.

1, 2, 3...

1. Open a hole of the dimensions shown below in the panel and install the

NT31/NT31C from the front side of the panel.

131 ^{+ 0.5 mm}

+ 0.5 mm

184

2. Attach the panel fittings at the four positions at top and bottom and two posi-

tions at right and left, shown below, from the rear of the NT31/NT31C.

Fit the hook of the fitting in the square hole in the body and tighten the screw

with the Philips head screwdriver while lightly pulling the fitting.

24V

PRINTER

PORT

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Installation

Section 3-1

Note 1. During work at the panel, take care to ensure that no metal scraps enter the

unit.

2. The thickness of applicable operation panel is 1.6 mm to 4.8 mm. All fittings

must be tightened uniformly to a torque of 0.5 to 0.6 N⋅m in order to ensure

water- and dust-resistance. Front sheet of NT31/NT31C may be warped if

the tightening is too strong or not uniformity. The panel must not be soiled or

warped, and must be able to support an installation that will remain secure

and strong.

3-1-3 Power Supply Connection

Connect a 24 VDC power supply to the power input terminals.

Note 1. Depending on how the power is switched ON/OFF, the entire system may

stop. Follow the correct procedure when switching the power ON/OFF.

2. Carefully check the wiring before switching ON the power.

3. Do not connect AC power to the DC terminals.

4. Use DC power supplies with low voltage fluctuation.

5. Do not perform a dielectric strength test.

6. If complying with EC directives (low voltage directives), use a power supply

with reinforced insulation (compliance with EC directives is planned for June

1998).

24 VDC

Breaker

24 VDC

power supply

Power Supply

The applicable power supply specifications are as follows.

Item

Value

Power supply

24 VDC

Allowable power supply voltage fluctuation range 20.4 VDC to 26.4 VDC

(24 VDC –15%, +10%)

Power supply voltage capacity

15 W or more

Parts Used for Connection

Note For the connection to the power supply terminal block, twisted wires of 2 mm or

greater cross sectional area and M3.5 size crimp terminals must be used.

Tighten the screws on the terminal block to a torque of 0.8 N⋅m.

Fork type

Round type

7 mm or less

Recommended Terminals

Maker

Type

Applicable Wire

(fork type) (round type) (stranded wire)

Japan Solderless Terminal MFG

Fuji Terminal

2-YS3A

2-YAS3.5

2Y-3.5

2-3.5

2.0 to 2.63 mm

V2-S3.5

2-3.5

Nichifu Terminal

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Installation

Section 3-1

3-1-4 Grounding

The NT31/NT31C has a functional ground terminal ( ).

Carry out wiring under the following conditions.

1, 2, 3...

1. In cases where the distance between the NT31/NT31C is small and it is as-

sumed that there is no potential difference between grounds, ground as

shown in Fig. (a) below.

2. In cases where there is a potential difference between the grounds of the

NT31/NT31C and the host, ground as shown in Fig. (b). If there is some dis-

tance between the NT31/NT31C and host and grounding at a single point is

difficult, do not connect the functional ground terminal ( ) of the

NT31/NT31C.

3. If the NT31/NT31C is installed in the same panel as equipment that gener-

ates noise, such as a motor or inverter, do not ground the functional ground

terminal ( ) of the NT31/NT31C.

NT31/

NT31C

NT31/

NT31C

Host

Grounding at

a single point

Fig. (b)

Ground to

100 Ω max.

Fig. (a)

Note Carry out grounding correctly in order to prevent operating errors due to noise.

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Connecting to the Support Tool

Section 3-2

3-2 Connecting to the Support Tool

In order to install the system program in the NT31/NT31C, or to transmit screen

data created with the Support Tool to the NT31/NT31C, the NT31/NT31C must

be connected to a personal computer with an RS-232C cable.

The NT31/NT31C connects the RS-232C cable from a personal computer at se-

rial port A. When the host is connected at serial port B, the connection with the

host can be maintained as it is while the NT31/NT31C is connected to the

RS-232C cable from a personal computer.

However, when a bar code reader is being used, it must be disconnected, so that

the RS-232C cable can be connected, since they both use serial port A.

PRINTER

PORT

Serial port A

(RS-232C, 9-pin)

Communication Conditions

The communication conditions are automatically set when the system installer

and Support Tool are started.

Recommended Connector Cable

Use the cable indicated below.

• CV500-CN228 (length: 2 m), made by OMRON

(D-SUB 9-pin, male ⇔ D-SUB 25-pin, male)

• XW2Z-S001 (conversion cable), made by OMRON

(D-SUB 25-pin, female ⇔ half pitch 14-pin, male)

• XW2Z-S002 (length: 2 m), made by OMRON

(D-SUB 9-pin, male ⇔ D-SUB 9-pin, female)

For details on making a connector cable, refer to Appendix F Making the Cable

for Connecting a PC (page 269).

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Connecting a Printer

Section 3-3

3-3 Connecting a Printer

Connecting a printer to the NT31/NT31C enables printing of hard copies of the

currently displayed screen (printing of screen images), and, by system menu op-

erations, printing of the screen display history and alarm history.

The following types of data can be printed, depending on the printer connected

to the NT31/NT31C. For details, refer to the pages cited.

• Hard copies of the screen (Refer to information on printing data and checking

the printer status in the NT31/NT31C/NT631/NT631C Programmable Termi-

nal Reference Manual.)

• Screen display history record data (page 198)

• Alarm history record data (page 200)

3-3-1 Connection Method

Connect the printer to the NT31/NT31C with a Centronics cable, as shown be-

low. The length of the cable should not exceed 1.5 m.

Reference: If the connector cable is connected or disconnected while the power to the printer

is on, the NT31/NT31C may malfunction. Always turn off the power to the printer

before connecting or disconnecting the cable.

24V

DC_PRINTER

PORT

Recommended Connector Cable

The following connection cables are recommended.

• NT-CNT121 (1.5 m, 20-pin to 36-pin), made by OMRON

Recommended Printers

When using a printer, use one that can emulate an NEC PC-PR201H (using

the NEC PC-PR201PL control protocol) or complies with one of the follow-

ing EPSON control standards: ESC/P 24-J83C (color), or ESC/P 24-J82

(monochrome).

When using a monochrome printer with an NT31C, set Tone printing with the

NT31C memory switches (page 174).

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Connecting a Bar Code Reader

Section 3-4

3-4 Connecting a Bar Code Reader

Connecting a bar code reader to the NT31/NT31C enables bar code data to read

as character strings into character string input fields, and set in character string

memory tables.

In order to use a bar code reader, the Comm. A Method memory switch must be

set to Bar-Code Reader.

For details on the method for inputting character strings with a bar code reader,

refer to 3-7 Input of Numeric Values and Character Strings in the NT31/NT31C/

NT631/NT631C Programmable Terminal Reference Manual.

Note Make sure that the power supply to the bar code reader and the power supply to

the PT are both OFF before connecting or disconnecting the cable.

3-4-1 Connection Method

Connect the bar code reader to serial port A of the NT31/NT31C, as shown in the

figure below.

NT31/NT31C

Bar code reader

PRINTER

PORT

Serial port A

9-pin connector

(RS-232C, 9-pin)

Connector cable

Bar code reader cable

Bar code reader must match the communication setting (3-4-2 Setting a Bar

Code Reader, page 37) and data format (3-4-3 Data Format, page 38) in order to

connect to the NT31/NT31C. Please confirm the specification of the bar code

reader before using.

For details on making a connector cable, refer to Appendix G Making the Cable

for Connection to a Bar Code Reader (page 271).

Reference: The bar code reader must be connected to serial port A. This means that it cannot

be connected at the same time as the Support Tool. Note also that when a bar

code reader is used, the host must be connected at serial port B.

3-4-2 Setting a Bar Code Reader

After connecting a bar code reader, set the communication conditions and other

settings for it by selection from the system menu.

Settings at the

NT31/NT31C

At the NT31/NT31C, set the communication conditions for communication with

the bar code reader by using the memory switches, selecting from the options

indicated in the table below.

For more detailed information on the actual system menu operations, refer to

6-10 Setting the Bar Code Reader Input Function (page 188).

Item

Possible Settings

7 or 8 bits

Default Setting

Data bits

7 bits

2 bits

Even

Stop bit(s)

Parity

1 or 2 bits

None, odd, even

Communications speed 4800, 9600, 19200 bps

Input Method Manual, Auto

9600 bps

Manual

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Connecting a Bar Code Reader

Section 3-4

Settings at the Bar Code

Reader

Make the settings shown in the table below at the bar code reader. Make sure

that the communications speed, parity, stop bit, and data bit settings match the

communication settings made at the NT31/NT31C. For details on the setting

method, refer to the instruction manual for the bar code reader used.

Item

Communications speed

Possible Settings

4800, 9600, 19200 bps

EVEN, ODD, NONE

1 or 2 bits

Parity

Stop bits

Data bits

7 or 8 bits

Preamble

STX

Postamble

ETX

RS/CS control

Communication protocol

Available

No-protocol mode

Transmission of number of bar code label digits Transmission prohibited

Transmission of ID characters

Bar code types

Transmission prohibited

Multi-reading (all types can be

read)

Trigger switch setting

Automatic reading mode

About RS/CS Control

During bar code reading, the NT31/NT31C performs RS/CS control. When the

Input Method setting of the NT31/NT31C is set to Auto, the RS signal is turned

OFF, prohibiting the next input, until the read data has been notified to the host.

Because of this, when the Auto setting is made, the next input is not possible

until the data has been notified to the host.

However, when the setting is Auto and the RS/CS signals of the cable are

shorted, RS/CS control is ineffective. Consequently, data input from the bar

code reader to the NT31/NT31C is updated regardless of whether or not the data

is notified to the host.

For details, refer to the instruction manual for the bar code reader used.

3-4-3 Data Format

The data format for communication when using the bar code input function of the

NT31/NT31C is shown below.

STX

Data

ETX

(02H)

(03H)

The characters which are effective as data are hexadecimal codes from 20 to

7FH, and the maximum data length is 40 bytes.

Data which does not follow the data format described above is invalidated and

discarded.

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Using a Memory Unit (-Vj Versions)

Section 3-5

3-5 Using a Memory Unit (-Vj Versions)

This section discusses the use of a memory unit with a V1 or V2 version of an

NT31/NT31C PT (NT31-ST121j-EVj or NT31C-ST141j-EVj).

Reference: Depending on the PT model and the system program which is installed, the func-

tion and using method of memory unit varies as follows.

PT Model

System Program

Function of Memory Unit

Conventional memory unit function. (Refer to

56.)

(System programs can not be transmitted us-

ing memory unit.)

Earlier than Ver. 2

Without Vj

suffix

Ver. 2 or later

New memory unit function.

(System programs can be transmitted using

memory unit.)

Earlier than Ver. 2

Ver. 2 or later

With Vj suf-

fix

The memory unit functions are determined by the model of PT being used, re-

gardless of the version of the system program installed in the PT.

By installing a memory unit (NT-MF261) on the NT31/NT31C, the screen data in

the NT31/NT31C can be recorded (backed up) in the memory unit.

In addition, the screen data in the memory unit can be automatically read into the

NT31/NT31C when it starts up. This means that system program and screen

data can be changed easily at the operation site without connecting to the Sup-

port Tool.

The data in the memory unit is retained without backup by a battery or other

means.

In systems where there are frequent setup changes, by preparing a number of

memory units in advance and recording screen data in them in accordance with

the control performed in each case, the NT31/NT31C screen data can be

changed simply by installing the memory unit, without connecting to the Support

Tool.

In addition, even if NT31/NT31C is replaced, the previous status can be main-

tained simply by installing the memory unit that retains the system program and

screen data of the previous NT31/NT31C.

By using the following combinations, data can be stored (backed up) to a

memory unit.

• Screen data for two PTs.

• System program for two PTs.

• System program and screen data for one PT.

One memory unit can store the screen data for two PTs.

Note 1. Make sure that the power supply to the PT is OFF before connecting or dis-

connecting a memory unit.

After mounting a memory unit, be sure to tighten its two screws.

2. During data transmission, do not turn off the power supply to the

NT31/NT31C or reset it.

3. Do not touch the PCB (printed circuit board) with bare hands.

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Using a Memory Unit (-Vj Versions)

Section 3-5

Reference: S When a memory unit is mounted, the NT31/NT31C cannot be set to the oper-

ating status. On completion of data transmission with a memory unit, always

disconnect the memory unit from the NT31/NT31C before starting

NT31/NT31C operation.

S Memory units (NT-MF261) can be used in common for the following PT mod-

els: NT31, NT31C, NT631, and NT631C (with or without the Vj suffix). One

memory unit can store screen data for up to two PTs of different models. How-

ever, since the data compatibility is not complete between NT31/NT31C and

NT631/NT631C, an error may occur if an attempt is made to read NT631C data

with an NT31C. (The data must be converted using the Support Tool.)

Note also that although there is data compatibility between the NT31 and

NT31C, and between the NT631 and NT631C, the display may not be cor-

rect since these models have different numbers of colors.

S One memory unit can store a system program for up to two PTs of different

models. In order to transmit a system program from the memory unit to the

NT31/NT31C, the system program must be compatible to the target PT model.

S The statuses of memory switch settings and system settings can be recorded

to the memory unit besides screen data. When the data in the memory unit is

written into the NT31/NT31C, make sure that these settings can be adapted to

the NT31/NT31C used before transmission.

3-5-1 Installation Method

Install the memory unit (NT-MF261) at the expansion interface connector at the

rear of the NT31/NT31C as shown in the figure below (the expansion interface

connector is located underneath the note label.).

Mounting screws

3-5-2 Method of Use

As shown in the figure below, a memory unit has two sets of four DIP switches,

and the operation is determined by the DIP switches that are set at startup.

Factory setting is turned all to off.

OFF

SW1

SW2

Note 1. Always confirm that the power to the NT31/NT31C is off before setting the

DIP switches.

2. Do not touch the PCB (printed circuit board) directly with bare hands.

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Using a Memory Unit (-Vj Versions)

Section 3-5

DIP Switch Functions

The functions of the DIP switches on the memory unit are indicated in the table

below.

• SW1

Switch

Function

OFF: Not executed

ON : Executed

Automatic transmission (writing from the memory

unit to the PT)

SW1-1

OFF: Not executed

ON : Executed

Automatic transmission (writing from the PT to

the memory unit)

SW1-2

SW1-3

OFF: Not executed

ON : Executed

Manual transmission (Direction of transmission

and bank used selected at the PT touch panel)

OFF: Screen data

SW1-4 Data type to transfer

ON : System

program

• SW2

Switch

Function

OFF: Disable

ON : Enable

OFF: Disable

ON : Enable

OFF: Bank 0

ON : Bank 1

OFF: Disable

ON : Enable

SW2-1 Disable/enable writing to PT

SW2-2 Disable/enable writing to the memory unit

SW2-3 Area (bank) selection of automatic transmission. *

SW2-4 System/Screen simultaneous transmission

* The memory unit stores system program or screen data for one PT in each of

areas (bank 0, bank 1). (The total data storage is for two PTs.) SW2-3 sets which

of these two banks is used for automatic transmission.

Reference: S The DIP switch function of the memory unit is supplemented to NT31/NT31C

with the Vj suffix.

S In the following cases, a mode setting error occurs.

• More than one of the SW1-1 to SW1-3 switches are set to ON.

• None of the SW1-1 to SW1-3 switches are set to ON.

S In the following case, a protect setting error occurs.

Transmitting to the write destination has been disabled by the setting for

SW2-1 or SW2-2.

S In the following cases, a data transmission error occurs.

• An attempt is made to transmit data other than the system program to PT

system program area.

• An attempt is made to transmit the system program to PT screen data

area.

S For details on mode setting errors and protect setting errors, refer to Errors

When Using a Memory Unit (page 45).

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Using a Memory Unit (-Vj Versions)

Section 3-5

Writing Screen Data to a

Memory Unit Using

Automatic Transmission

(PT to Memory Unit)

In this mode, system program or the screen data in the NT31/NT31C is forcibly

written to the memory unit irrespective of the setting status of the NT31/NT31C.

This mode is convenient if the touch panel is broken and touch switch operation

is not possible, or if someone unfamiliar with touch switch operation at the opera-

tion site is using the system.

Reference: When screen data is written to the memory unit, the data that has been stored in

the specified area up until that point is lost (if the data is written into only one

Bank, the other Bank will not be affected).

Method of Execution

Use the following procedure to write the screen data in the NT31/NT31C to the

memory unit by automatic transmission.

1, 2, 3...

1. Check that the power supply to the NT31/NT31C is OFF, then set the DIP

switches of the memory unit as follows after installing memory unit to

NT31/NT31C.

SW2

SW1

SW2-4 ON: System/Screen transmitted simultaneously

OFF: System/Screen not transmitted simultaneously

SW2-3 ON: Bank 1

OFF: Bank 0

SW1-4 ON: System program

OFF: Screen data

It is not strictly necessary to set SW2-1 to OFF (to disable writing to the PT),

but it is recommended to do so to avoid loss of data in the event of operating

errors.

Reference: S Setting SW2-4 to ON (System/Screen transmitted simultaneously) disables

the setting of SW1-4.

S Setting SW2-4 to ON (System/Screen transmitted simultaneously) disables

the setting of SW2-3, writes the system program into bank 0, and the screen

data into bank 1 at all times.

2. Switch the NT31/NT31C power ON.

The screen data is automatically written into the memory unit. The screen

data in the NT31/NT31C is preserved.

The messages Preparing, Transmitting, Verifying, and Finished are dis-

played on the screen in accordance with the progress of data writing.

At the same time, the progress of the data writing status is displayed by the

means of the number of bytes and blocks (1 bank = 16 block = 1024k byte).

RUN LED operates as follows according to the processing status.

Preparing

Transmitting

Verifying

: flashes at intervals of 1 second

: flashes at intervals of 0.5 second

: lights up

Finished

3. Switch the NT31/NT31C power OFF, remove the memory unit.

To operate NT31/NT31C continuously, switch the NT31/NT31C power back

ON.

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Using a Memory Unit (-Vj Versions)

Section 3-5

Writing Screen Data to

the PT Using Automatic

Transmission (Memory

Unit to PT)

In this mode, the system program or screen data in the memory unit is forcibly

written to NT31/NT31C irrespective of the setting status of the NT31/NT31C.

Since data transmission by this method is faster than when the Support Tool or

system installer is used, it can save a lot of time. When transmitting the same

system program or screen data to multiple NT31/NT31C, this mode becomes

convenient.

Reference: When data is written to the NT31/NT31C, the data that has been stored up until

that point is lost. When the system program is changed, the operation of

NT31/NT31C also changes.

Method of Execution

Use the following procedure to write the screen data in the memory unit to the

NT31/NT31C by automatic transmission.

1, 2, 3...

1. Check that the NT31/NT31C power is OFF, then set the DIP switches on the

memory unit as follows after installing memory unit to NT31/NT31C.

SW1

SW2

SW2-4 ON: System/Screen transmitted simultaneously

OFF: System/Screen not transmitted simultaneously

SW2-3 ON: Bank 1

OFF: Bank 0

SW1-4 ON: System program

OFF: Screen data

It is not strictly necessary to set SW2-2 to OFF (to disable writing to the

memory unit), but it is recommended to do so to avoid loss of data in the

event of operating errors.

Reference: S Setting SW2-4 to ON (System/Screen transmitted simultaneously) disables

the setting of SW1-4.

S Setting SW2-4 to ON (System/Screen transmitted simultaneously) disables

the setting of SW2-3. In this case, the data transmission becomes possible

only if the data inside memory unit is in either of following combinations.

Bank 0: system program, Bank 1: other than system program

Bank 0: other than system program, Bank 1: system program

If the combination is not as listed above, a data transmitting error occurs.

S When writing the system program into the NT31/NT31C, the type of system

program inside memory unit and the type of PT unit must be corresponding.

2. Switch the NT31/NT31C power ON.

The screen data is automatically written into the PT.

The messages Preparing, Transmitting, Verifying and Finished are dis-

played on the screen in accordance with the progress of data writing.

At the same time, the progress of data writing status is displayed by the

means of the number of bytes and blocks (1 bank = 16 block = 1024k byte).

The RUN LED operates as follows according to the processing status.

Preparing

Transmitting

Verifying

: flashes at intervals of 1 second

: flashes at intervals of 0.5 second

: lights up

Finished

3. Switch the NT31/NT31C power OFF, remove the memory unit.

To operate NT31/NT31C continuously, switch the NT31/NT31C power back

ON.

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Using a Memory Unit (-Vj Versions)

Section 3-5

Reading and Writing Data

by Manual Transmission

In this method, the direction of transmission and area of the memory unit used

are set by touch switch operations at the NT31/NT31C. Transmission can be

executed while checking the settings.

Reference: When data is written to the NT31/NT31C or memory unit, the data that has been

stored up until that point is lost.

Method of Execution

Use the following procedure to write screen data using manual transmission.

1, 2, 3...

1. Check that the NT31/NT31C power is OFF, then set the DIP switches on the

memory unit as follows.

SW2

SW1

Setting of SW2-4 not relevant

Setting of SW2-3 not relevant

Setting of SW1-4 not relevant

In order to avoid loss of data in the event of operating errors, it is advisable to

set SW2-1 and SW2-2 so as to disable writing to the unit from which the data

is to be read.

2. Switch the NT31/NT31C power ON.

Display language select screen appears.

3. Press the Japanese or English touch switches to select the display lan-

guage.

The following descriptions are for when English is selected.

The screen shown below is displayed.

Current PT Screen Data, System

The first line:

Compatible PT type for the system program inside PT.

The second line: System program name and Version for the system pro-

gram inside PT.

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Using a Memory Unit (-Vj Versions)

Section 3-5

(The second line may not be displayed in the kind of system program.)

Current PT Screen Data, Screen

The comment for the screen data in the NT31/NT31C is displayed here.

Current Memory Unit Screen Data

• In the case of system program:

The first line:

Compatible PT type for the system program inside the

memory unit.

The second line: System program name and Version for the system pro-

gram inside the memory unit.

(The second line may not be displayed in the system program for some

models.)

• In the case of screen data:

The comment for the screen data in the NT31/NT31C is displayed here.

The available transmitting destinations are altered depending on the settings of

the origin of transmitting as described in the table below.

Source

[PT]screen

Destination

[Memory unit] Bank 1

[Memory unit] Bank 0

[PT]system

[PT]system/screen

[Memory unit] Bank 0

[Memory unit] Bank 0/1 (fixed)

S If system program is selected

[PT]system (fixed)

S If screen data is selected

[PT]screen (fixed)

[Memory unit] Bank 1

[Memory unit] Bank 0/1 [PT]system/screen (fixed)

Reference: S When transmitting the system program and screen data simultaneously from

the PT to the memory unit, the setting of banks is Bank 0: system program,

Bank 1: screen data, and when transmitting them from the memory unit to the

PT, either of the following combinations must be used.

Bank 0: system program, Bank 1: other than system program

Bank 0: other than system program, Bank 1: system program

S When writing the system program into the NT31/NT31C, the type of system

program inside memory unit and the type of PT unit must be corresponding.

4. Press Execute.

The data is transmitted.

The messages Preparing, Transmitting, Verifying, and Finished are dis-

played in accordance with the progress of data transmission. At the same

time, the progress of data transmitting status is displayed by the means of

the number of bytes and blocks (1 bank = 16 block = 1024k byte).

When the data transmission is operated manually, RUN LED remains OFF.

5. Switch the NT31/NT31C power OFF, remove the memory unit, then switch

the NT31/NT31C power back ON.

Errors When Using a

Memory Unit

If an error occurs when using the memory unit, the NT31/NT31C operates as

follows.

• The details of the error and remedial action are displayed on the screen.

Each screen has touch switches to change the display language from one to

the other. When the manual data transmission is operating, the content of

error and remedial action are shown with selected language. When the au-

tomatic transmission is operating, it is displayed in Japanese.

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Using a Memory Unit (-Vj Versions)

Section 3-5

• The continuous buzzer sounds.

• The RUN LED flashes.

If a protect setting error occurs when executing manual transmission, it is pos-

sible to return to the memory unit manual transmission screen by pressing the

OK touch switch, but in the case of other errors, the status described above re-

mains in effect until the NT31/NT31C power is turned OFF or reset.

When an error occurs, take remedial action by referring to the table below.

Error

Probable Cause

Remedial Action

Mode setting error

DIP switches SW1-1 to

SW1-3 are all OFF, or

more than one is ON.

Turn the NT31/NT31C power

OFF, set the memory unit DIP

switches correctly, then turn the

NT31/NT31C power back ON.

Protect setting error Writing to the data write

Turn the NT31/NT31C power

OFF, set the memory unit DIP

(automatic

destination has been

transmission)

prohibited by the setting switches correctly, then turn the

of SW2-1 or SW2-2.

NT31/NT31C power back ON.

Protect setting error Writing to the data write

Perform either of the following

procedures.

(manual

destination has been

transmission)

prohibited by the setting S Press the OK touch switch to re-

of SW2-1 or SW2-2.

turn to the memory unit manual

transmission screen, make the

correct settings, then try again.

S Turn the NT31/NT31C power

OFF, correct the DIP switches

settings of the memory unit, then

turn the power back ON.

Flash memory error An error occurred during Turn the NT31/NT31C power

initialization of the OFF, then back ON. If the error

NT31/NT31C or memory recurs, the flash memory at the

unit flash memory, or write destination may be faulty. In

during write processing. this case, replace the unit.

Verify error

An error occurred during Turn the NT31/NT31C power

verification processing at OFF, then back ON. If the error

the flash memory of the

NT31/NT31C or the

memory unit.

recurs, the flash memory at the

write destination may be faulty. In

this case, replace the unit.

Transmitting data

error

(The automatic

transmission only)

An attempt is made to

transmit data other than procedures.

a system program or the S Turn the NT31/NT31C power

Perform either of the following

system program of a

different PC model into

the NT31/NT31C as the

system program.

An attempt is made to

write a system program

into the NT31/NT31C as

screen data.

OFF, correct the DIP switch set-

tings of the memory unit, and

then turn the power back ON.

S Turn the NT31/NT31C power

OFF, set the DIP switch settings

to the manual transmission, and

then check the data inside the

memory unit.

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Using a Memory Unit (Versions without the -Vj Suffix)

Section 3-6

3-6 Using a Memory Unit (Versions without the -Vj Suffix)

This section discusses the use of a memory unit with the basic versions of the

NT31/NT31C PTs (NT31-ST121j-E or NT31C-ST141j-E).

Reference: In this case, the function and use of the memory unit are the same as ones for the

NT31/NT31C without the Vj suffix. (The system program transmission by using

a memory unit cannot be processed.)

By installing a memory unit (NT-MF261) on the NT31/NT31C, the screen data in

the NT31/NT31C can be recorded (backed up) in the memory unit.

In addition, the screen data in the memory unit can be automatically read into the

NT31/NT31C when it starts up. This means that screen data can be changed

easily at the operation site without connecting to the Support Tool.

The data in the memory unit is retained without backup by a battery or other

means.

In systems where there are frequent setup changes, by preparing a number of

memory units in advance and recording screen data in them in accordance with

the control performed in each case, the NT31/NT31C screen data can be

changed simply by changing the memory unit, without connecting to the Support

Tool.

One memory unit can store the screen data for two PTs.

Note 1. Make sure that the power supply to the PT is OFF before connecting or dis-

connecting a memory unit. After mounting a memory unit, be sure to tighten

its two screws.

2. During data transmission, do not turn off the power supply to the

NT31/NT31C or reset it.

3. Do not touch the PCB (printed circuit board) with bare hands.

Reference: S When a memory unit is mounted, the NT31/NT31C cannot be set to the oper-

ating status. On completion of data transmission with a memory unit, always

disconnect the memory unit from the NT31/NT31C before starting

NT31/NT31C operation.

S Memory units (NT-MF261) can be used in common for the following PT mod-

els: NT31, NT31C, NT631, NT631C (with or without the Vj suffix). One

memory unit can store screen data for up to two PTs of different models. How-

ever, since the data compatibility is not complete between NT31/NT31C and

NT631/NT631C, the data of NT631 cannot be used in NT31C without putting it

through a conversion (the data must be converted using the Support Tool).

Note also that although there is data compatibility between the NT31 and

NT31C, and between the NT631 and NT631C, the display may not be cor-

rect since these models have different numbers of colors.

The screen data for NT31/NT31C PTs with system program Ver. 2 or later

cannot be used with PTs with system program earlier than Ver. 2.

S The statuses of memory switch settings and system settings can be recorded

to the memory unit besides screen data. When the data in the memory unit is

written into the NT31/NT31C, make sure that these settings can be adapted to

the NT31/NT31C used before transmission.

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Using a Memory Unit (Versions without the -Vj Suffix)

Section 3-6

3-6-1 Installation Method

Install the memory unit (NT-MF261) at the expansion interface connector at the

rear of the NT31/NT31C as shown in the figure below. (The expansion interface

connector is located underneath the note label.)

Mounting screws

3-6-2 Method of Use

As shown in the figure below, a memory unit has two sets of four DIP switches,

and the operation is determined by the DIP switches that are set at startup.

Factory setting is turned all to off.

OFF

SW1

SW2

Note 1. Always confirm that the power to the NT31/NT31C is off before setting the

DIP switches.

2. Do not touch the PCB (printed circuit board) directly with bare hands.

DIP Switch Functions

The functions of the DIP switches on the memory unit are indicated in the table

below.

• SW1

Switch

Function

OFF: Not executed

ON : Executed

Automatic transmission (writing from the memory

unit to the PT)

SW1-1

OFF: Not executed

ON : Executed

Automatic transmission (writing from the PT to

the memory unit)

SW1-2

SW1-3

OFF: Not executed

ON : Executed

Manual transmission (Direction of transmission

and bank used selected at the PT touch panel)

SW1-4 Reserved for system use (must be set to OFF)

• SW2

Switch

SW2-1 Disable/enable writing to PT

Function

OFF: Disable

ON : Enable

OFF: Disable

ON : Enable

OFF: Bank 0

ON : Bank 1

SW2-2 Disable/enable writing to the memory unit

SW2-3 Area (bank) selection of automatic transmission.

SW2-4 Reserved for system use (must be set to OFF)

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Using a Memory Unit (Versions without the -Vj Suffix)

Section 3-6

* The memory unit stores screen data for one PT in each area (bank 0,

bank 1). (The total data storage is for two PTs.) SW2-3 sets which of

these two banks is used for automatic transmission.

Reference: S In the following cases, a mode setting error occurs.

• More than one of the SW1 switches are set to ON.

• None of the SW1 switches are set to ON.

S In the following case, a protect setting error occurs.

• Writing to the write destination has been disabled by the setting for SW2-1

or SW2-2.

S For details on mode setting errors and protect setting errors, refer to Errors

When Using a Memory Unit (page 3 to 25).

Writing Screen Data to a

Memory Unit Using

Automatic Transmission

(PT to Memory Unit)

In this mode, the screen data in the NT31/NT31C is forcibly written to the

memory unit irrespective of the setting status of the NT31/NT31C.

This mode is convenient if the touch panel is broken and touch switch operation

is not possible, or if someone unfamiliar with touch switch operation at the opera-

tion site is using the system.

Reference: When screen data is written to the memory unit, the data that has been stored in

the specified area up until that point is lost (there is no effect on the other area).

Method of Execution

Use the following procedure to write the screen data in the NT31/NT31C to the

memory unit by automatic transmission.

1, 2, 3...

1. Check that the power supply to the NT31/NT31C is OFF, then set the DIP

switches of the memory unit as follows after installing the memory unit in

NT31/NT31C.

OFF

SW1

SW2

SW2-3

ON: Bank 1

OFF: Bank 0

It is not strictly necessary to set SW 2-1 to OFF (to disable writing to the

memory unit), but it is recommended to do so to avoid loss of data in the

event of operating errors.

2. Switch the NT31/NT31C power ON.

The screen data is automatically written into the memory unit. The screen

data in the NT31/NT31C is preserved.

The messages Preparing, Transmitting, Verifying, and Finished are dis-

played on the screen in accordance with the progress of data writing.

When messages Preparing, Transmitting, and Verifying are displayed, the

RUN LED flashes, and when the message Finished is displayed, the RUN

LED lights.

3. Switch the NT31/NT31C power OFF, remove the memory unit. To operate

NT31/NT31C continuously, switch the NT31/NT31C power back ON.

Writing Screen Data to

In this mode, screen data is forcibly written from the memory unit to the

NT31/NT31C irrespective of the setting status of the NT31/NT31C.

the PT Using Automatic

Transmission (Memory

Unit to PT)

Since data transmission by this method is faster than when the Support Tool is

used, it can save a lot of time. When transmitting the same system program or

screen data to multiple NT31/NT31C, this mode becomes convenient.

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Using a Memory Unit (Versions without the -Vj Suffix)

Section 3-6

Reference: When data is written to the NT31/NT31C, the data that has been stored up until

that point is lost.

Method of Execution

Use the following procedure to write the screen data in the memory unit to the

NT31/NT31C by automatic transmission.

1, 2, 3...

1. Check that the NT31/NT31C power is OFF, then set the DIP switches on the

memory unit as follows after installing the memory unit in NT31/NT31C.

OFF

SW1

SW2

SW2-3

ON: Bank 1

OFF: Bank 0

It is not strictly necessary to set SW2-2 to OFF (to disable writing to the

memory unit), but it is recommended to do so to avoid loss of data in the

event of operating errors.

2. Switch the NT31/NT31C power ON.

The screen data is automatically written into the PT.

The messages Preparing, Transmitting, Verifying and Finished are dis-

played on the screen in accordance with the progress of data writing.

When messages Preparing, Transmitting, and Verifying are displayed, the

RUN LED flashes, and when the message Finished is displayed, the RUN

LED lights.

3. Switch the NT31/NT31C power OFF, and remove the memory unit.

To operate NT31/NT31C continuously, switch the NT31/NT31C power back

ON.

Reading and Writing Data

by Manual Transmission

In this method, the direction of transmission and area of the memory unit used

are set by touch switch operations at the NT31/NT31C. Transmission can be

executed while checking the settings.

Reference: When data is written to the NT31/NT31C or memory unit, the data that has been

stored up until that point is lost.

Method of Execution

Use the following procedure to read and write screen data using manual trans-

mission.

1, 2, 3...

1. Check that the NT31/NT31C power is OFF, then set the DIP switches on the

memory unit as follows.

OFF

SW1

SW2

Setting of SW2-3 not relevant

In order to avoid loss of data in the event of operating errors, it is advisable to

set SW2-1 and SW2-2 so as to disable writing to the unit from which the data

is to be read.

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Using a Memory Unit (Versions without the -Vj Suffix)

Section 3-6

2. Switch the NT31/NT31C power ON.

The screen shown below is displayed.

(Example)

Current PT Screen Data

The comment for the screen data in the NT31/NT31C is displayed here.

Current Memory Unit Screen Data

The comments for the screen data in each area are displayed here.

Pressing the Trans. Direction Change and Bank Change touch switches chan-

ges the selections for the direction of transmission and the area of the memory

unit used.

3. Press Execute.

The data is transmitted.

The messages Preparing, Transmitting, Verifying, and Finished are dis-

played in accordance with the progress of data transmission.

4. Switch the NT31/NT31C power OFF, remove the memory unit, then switch

the NT31/NT31C power back ON.

Errors When Using a

Memory Unit

If an error occurs when using the memory unit, the NT31/NT31C operates as

follows.

• The details of the error and remedial action are displayed on the screen.

• The continuous buzzer sounds.

• The RUN LED flashes.

If a protect setting error occurs when executing manual transmission, it is pos-

sible to return to the memory unit manual transmission screen by pressing the

OK touch switch, but in the case of other errors, the status described above re-

mains in effect until the NT31/NT31C power is turned OFF or reset.

When an error occurs, take remedial action by referring to the table below.

Error

Probable Cause

Remedial Action

Mode setting error

DIP switches SW1-1 to

SW1-3 are all OFF, or

more than one is ON.

Turn the NT31/NT31C power

OFF, set the memory unit DIP

switches correctly, then turn the

NT31/NT31C power back ON.

Protect setting error Writing to the data write

Turn the NT31/NT31C power

OFF, set the memory unit DIP

(automatic

destination has been

transmission)

prohibited by the setting switches correctly, then turn the

of SW2-1 or SW2-2.

NT31/NT31C power back ON.

Protect setting error Writing to the data write

Perform either of the following

procedures.

(manual

destination has been

transmission)

prohibited by the setting S Press the OK touch switch to re-

of SW2-1 or SW2-2.

turn to the memory unit manual

transmission screen, make the

correct settings, then try again.

S Turn the NT31/NT31C power

OFF, correct the DIP switches

settings of the memory unit, then

turn the power back ON.

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Using a Memory Unit (Versions without the -Vj Suffix)

Section 3-6

Error

Flash memory error An error occurred during Turn the NT31/NT31C power

initialization of the OFF, then back ON. If the error

NT31/NT31C or memory recurs, the flash memory at the

unit flash memory, or write destination may be faulty. In

Probable Cause

Remedial Action

during write processing. this case, replace the unit.

Verify error

An error occurred during Turn the NT31/NT31C power

verification processing at OFF, then back ON. If the error

the flash memory of the

NT31/NT31C or the

memory unit.

recurs, the flash memory at the

write destination may be faulty. In

this case, replace the unit.

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SECTION 4

Connecting to the Host from the RS-232C Port

This section describes the method for connecting to the host using the RS-232C port of the PT.

4-1 Connecting to the RS-232C Port at the Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1-1 Host Types and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1-2 Connecting Directly between RS-232C Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Connecting to the RS-232C Port at the Host

Section 4-1

4-1 Connecting to the RS-232C Port at the Host

The method for connecting between the RS-232C port of the PT and the

RS-232C port of the host is as follows.

The following discussion is focused on the connection method to OMRON PCs

(By using the memory link method, a connection can be made to any arbitrary

RS-232 unit). When making a connection to a host other than OMRON PCs, re-

fer to the PC Connection Manual (V042-E1-j) or NT31/631 Multi Vendor Con-

nection Manual (V060-E1-j).

Direct Connection Between The RS-232C Ports Using an RS-232C Cable

(Page 111)

This is the easiest connection method. Depending on the host to which the con-

nection is to be made, it may be possible to use OMRON cables with connectors.

NT31/NT31C

Host

RS-232C cable (max. 15 m)

Reference: The CS1 series CPU cannot be connected with the 1:1 connection NT link meth-

od. Use the 1:N connection NT link method instead to make the 1:1 connection.

For details, refer to Using the NT Link (1:N) Method (page 72) or Using the High-

speed NT Link (1:N) Method (page 75).

4-1-1 Host Types and Settings

The types of host that can be connected to a PT by using the RS-232C ports of

both units, and the settings to be made at the host, are described here.

When Using the Host Link Method

Compatible Host Units

Some models and series of OMRON PCs have the host link function built in.

In the CS1-series or CQM1H PCs, the host link method can be used by installing

a Serial Communication Board. In addition, some C200HX/HG/HE(-Z)E have

an integral CPU that can be connected in the host link method by installing a

Communication Board.

Check the model and series of the PC, the type of installed Serial Communica-

tion Board, Serial Communication Unit, or Host Link Unit before making a con-

nection.

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Connecting to the RS-232C Port at the Host

Section 4-1

The host units that can be connected to the NT31/NT31C by the host link method

using the RS-232C ports of both units are indicated in the table below.

CPUs Connectable with Host Link

Units or Expansion Communication

Board

PC Se-

ries

Units with Built-in Host Link

Function

Host Link Unit/

Communication Board

Connectable

CS1W-SCU21

CS1W-SCB21

CS1W-SCB41

CS1 Se-

ries

CS1G-CPU42/43/44/45-EV1

CS1H-CPU63/64/65/66/67-EV1

CS1G-CPU42/43/44/45-EV1

CS1H-CPU63/64/65/66/67-EV1

CS1G

CS1H

C1000H-CPU01-EV1

C2000H-CPU01-EV1

C1000H

C2000H

---

C120-LK201-EV1

C200HS-CPU01/03/21/23/31/33-E

C200HE-CPU11/32/42-E

C200HS

C200HE

C200HE-CPU11/32/42-ZE

C200HE-Z

C200HG

C200HG-Z

C200HX

---

C200HG-CPU33/43/53/63-E

C200HG-CPU33/43/53/63-ZE

C200HX-CPU34/44/54/64-E

C200HX-CPU34/44/54/64/65/85-ZE

C200H-LK201-EV1

C200HX-Z

C200HS-CPU21/23/31/33-E

---

C200HS

C200HE-CPU42-E

C20HE-CPU42-ZE

C200HE-CPU32/42-E

C200HE

C200HE-Z

C200HG

C200HG-Z

C200HX

C200HX-Z

C1000H

C200HE-CPU32/42-ZE

C200HG-CPU33/43/53/63-E

C200HG-CPU33/43/53/63-ZE

C200HX-CPU34/44/54/64-E

C200HX-CPU34/44/54/64/65/85-ZE

C1000H-CPU01-EV1

C200HG-CPU43/63-E

C200HG-CPU43/63-ZE

C200HX-CPU44/64-E

C200HX-CPU44/64/65/85-ZE

C200HW-COM02/04/

05/06-EV1

C Series

---

C500-LK201-EV1

C500-LK203

C2000H-CPU01-EV1

C2000H

C1000H-CPU01-EV1

C1000HF-CPU01-EV1

C2000H-CPU01-EV1

C1000H (F)

C2000H

CPM1-10/20/30CDR-j

+CPM1-CIF01

---

CPM1

CPM1A-10/20/30/40CDj-j

+CPM1-CIF01

CPM2A-30/40/60CDjj-j

+CPM1-CIF01

(Peripheral port connection)

---

CPM2A

CPM2C-10/20jjjjjj-j

(*1)

---

CPM2C

CQM1

CQM1-CPU21-E

CQM1-CPU41/42/43/44-EV1

CQM1H-CPU11/21/51/61 (*2)

---

CQM1H-CPU51/61

CV500-CPU01-EV1

CV1000-CPU01-EV1

CV2000-CPU01-EV1

CQM1H-SCB41

CQM1H

CV500

CV500-CPU01-EV1

CV1000-CPU01-EV1

CV2000-CPU01-EV1

CV Se-

ries (*3)

CV1000

CV2000

CV500-LK201

CVM1

Series

(*3)

CVM1-CPU01-EV2

CVM1-CPU11-EV2

CVM1-CPU21-EV2

CVM1-CPU01-EV2

CVM1-CPU11-EV2

CVM1-CPU21-EV2

CVM1

Compo-

Bus/S

master

control

unit

SRM1-C02-V1

---

SRM1

*1: Use a CPM2C-CN111 or CS1W-CN114/118 Connecting Cable, CPM1-CIF01 RS-232C Adapter, or CPM1-CIF11

RS-422A Adapter to connect.

*2: The CQM1H-CPU11 does not have a built-in RS-232C port, so connect to the peripheral port to the PT with a

CS1W-CN118 Connecting Cable.

*3: CPUs of CVM1/CV-series PCs without the suffix -EVj cannot be connected.

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Connecting to the RS-232C Port at the Host

Section 4-1

Settings at the Host

When using the host link method, the settings shown below must be made at the

host (depending on the unit, some of these settings may not be necessary, or

settings not shown here may be necessary).

Item

Switch Setting

I/O port

RS-232C

(*1)

Communications speed

Transfer code

Parity

Set the same speed as for the NT31/NT31C.

ASCII, 7 data bits, 2 stop bits

Even

(*2)

1-to-1/1-to-N

Instruction level

Unit #

1-to-N

Level 1, 2, 3

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

memory switch at the NT31/NT31C. For details, refer to Setting the Host Link

Method (page 160).

*2 The 1-to-N setting enables BCC (Block Check Character). It is not actually

possible to connect more than one NT31/NT31C in a single host link.

The setting methods for each type of unit are described in the following.

Connecting to a C-series Host Link Unit

C200H/C200HS/C200HE/HG/HX (-Z)E Backplane mounted type:

C200H-LK201-V1

Setting the Front Switches

Set each switch with a flat blade screwdriver so that the values or symbols in the

setting value window agree with the following.

LK201

XMT

RUN

RCV

ERROR

@ Unit # (SW1, SW2)

Set these switches to 0.

SW1

SW3

SW2

@ Instruction level, parity, and transfer code (SW4)

SW4

Set this switch to 2.

@ Communications speed (SW3)

Set this switch to 5 to select 9600 bps.

Set this switch to 6 to select 19200 bps.

Setting the Rear Switches

@ 1-to-1/1-to-N selection (DIP switch)

Set #3 to ON.

CTS selector switch

External

@ CTS selection (selector switch)

0V (ON)

Set this always to 0V (ON).

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Connecting to the RS-232C Port at the Host

Section 4-1

C1000H(F)/C2000H Backplane mounted type: 3G2A5-LK201-EV1

Setting the Front Switches

Local

Host

Mode control (key switch)

Set this to host link.

Setting the Rear Switches

@ I/O port selection (selector switch)

Set this to RS-232C.

I/O port

@ Unit # (DIP SW1)

RS-422A

RS-232C

Set SW1-1 to SW1-5 to OFF (0).

SW1

Synchronization

Internal

External

@ Synchronization (selector switch)

Set this to Internal.

Terminator

OFF

SW2

CTS

@ Communications speed

(DIP SW2-1 to SW2-4)

External

Set these switches to 0010 to select

19,200 bps.

Set these switches to 1010 to select

9,600 bps.

(0: OFF 1: ON)

@ 1-to-1/1-to-N selection (DIP SW2-6)

Set SW2-6 to OFF (0) (1-to-N).

@ Instruction level (DIP SW2-7, SW2-8)

Set these switches to ON (1).

(Levels 1, 2, and 3 are enabled.)

@ CTS selection (selector switch)

Set this always to 0V (ON).

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Connecting to the RS-232C Port at the Host

Section 4-1

C1000H/C2000H Backplane mounted type: C500-LK203

Setting the Rear Switches

@ I/O port selection (selector switch)

Set this to RS-232C.

5V supply

OFF

@ Unit #, parity, and transfer code

(DIP SW1-1 to SW1-7)

I/O port

RS-422A

RS-232C

Set SW1-1 to SW1-7 to OFF (0).

SW1

Synchronization

Internal

External

@ Synchronization (selector switch)

Set this to Internal.

Terminator

OFF

SW2

CTS

@ Communications speed

(DIP SW2-1 to SW2-4)

External

Set these switches to 0010 to select

19,200 bps.

Set these switches to 1010 to select

9,600 bps.

(0: OFF 1: ON)

@ 1-to-1/1-to-N selection (DIP SW2-6)

Set SW2-6 to OFF (0) (1-to-N).

@ Instruction level (DIP SW2-7, SW2-8)

Set these switches to ON (1).

(Levels 1, 2, and 3 are enabled.)

@ CTS selection (selector switch)

Set this always to 0V (ON).

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Connecting to the RS-232C Port at the Host

Section 4-1

C200H/C1000H/C2000H CPU mounting type: 3G2A6-LK201-EV1

Setting the Rear Switches

@ Unit #, parity, and transfer code

(DIP SW1-1 to SW1-5)

Set SW1-1 to SW1-5 to OFF (0).

* Parity is fixed at Even Parity. Transfer code is

fixed at ASCII 7 data bits and 2 stop bits.

@ Communications speed (DIP SW2-1 to SW2-4)

Set these switches to 0010 to select 19,200 bps.

Set these switches to 1010 to select 9,600 bps.

(0: OFF 1: ON)

SW1

SW2

@ 1-to-1/1-to-N selection (DIP SW2-6)

Set SW2-6 to OFF (0) (1-to-N).

SW3

@ Instruction level (DIP SW2-7, SW2-8)

Set these switches to ON (1).

(Levels 1, 2, and 3 are enabled.)

@ CTS selection (DIP SW3-1 and SW3-2)

Set SW3-1 to ON (1), and SW3-2 to OFF (0).

(Set this always to 0V.)

@ Synchronization (DIP SW3-3 to SW3-6)

Set SW3-3, SW3-5, and SW3-6 to ON (1), and

SW3-4 to OFF (0). (Set these to Internal.)

Connecting to a CVM1/CV Series Host Link Unit

CVM1/CV series backplane mounted type: CV500-LK201

A CVM1/CV series host link unit (CV500-LK201) has two connectors (commu-

nication ports 1 and 2). Either of these ports can be used for connection to an

NT31/NT31C by the RS-232C method. However, since the connectors at these

ports are of different types, a cable that matches the connector must be pre-

pared.

• Communication port 1

Communication port 1 is a 25-pin connector for RS-232C use only.

• Communication port 2

Communication port 2 is a 9-pin connector which allows selection of the

RS-232C or RS-422A method. When this port is used with the RS-232C meth-

od, the I/O port selector switch on the front of the unit must be set to RS-232C

(the upper position).

CPU Bus Unit Settings

When connecting to a CVM1/CV series host link unit, set the following commu-

nication conditions for the CPU bus unit settings.

Item

Communications speed

Transfer code

Parity

Setting at Host

Set the same speed as set at the NT31/NT31C

ASCII, 7 data bits, 2 stop bits

Even

(*1)

(*2)

1-to-1, 1-to-N

Instruction level

1-to-N

Level 1, 2, 3

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

memory switch at the NT31/NT31C. For details, refer to Setting the Host Link

Method (page160).

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Connecting to the RS-232C Port at the Host

Section 4-1

*2 The 1-to-N setting enables BCC (Block Check Character). It is not actually

possible to connect more than one NT31/NT31C in a single host link.

Set the CPU bus unit settings directly from a Programming Device (e.g. SYS-

MAC support software).

For details on the CPU bus unit settings, refer to the SYSMAC CVM1/CV-series

Host Link Unit Operation Manual (W205-E1-j).

Setting the Front Switches

@ Unit # (SW3, SW4)

When using communication port 2, set these

switches to 0.

Communications port 1

(RS-232C)

@ I/O port selection (selector switch)

Set this to RS-232C.

Communications port 2

(RS-232C/RS-422A)

@ CTS selection (DIP SW2 and SW3)

Set SW2 or SW3 to ON. (Set this always to 0V.)

I/O port selector switch

To use communication port 1, set SW2. To use

communication port 2, set SW3.

RS-232C

RS-422A

@ Communication condition setting (DIP SW1)

Set this switch to OFF.

Communication is executed in accordance with the

CPU bus unit system settings made at the PC. The

initial values for the system settings are as follows.

- Communications speed: 9600 bps

- Parity: Even

- Xon/Xoff control: Not executed

- Communication method: Full duplex

- Stop bits: 2 stop bits

- Data length: 7 bits

Connecting to a CS1-series Serial Communication Unit

CS1 series Backplane mounted type: CS1W-SCU21

Setting the Front Switches

Set the unit number of the serial communication unit by using the rotary switch

located on the front panel. Set each switch with a flat blade screwdriver so that

the values or symbols in the setting value window agree with the following.

SCU21

RDY

ERH

SD2

RD2

RUN

ERC

SD1

RD1

UNIT

Set the unit number to 0 through F so

that it will not overlap with the numbers

used in other units.

No.

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Connecting to the RS-232C Port at the Host

Section 4-1

Allocation DM Area Settings for CPU

Settings are written from the Programming Device (a Programming Console or

CX-Programmer) directly into the allocation DM area (system setting area) of

the CPU. After the settings are written, they become effective by turning the

power ON, restarting the unit, restarting the communication port, or execution of

the STUP command.

In the following, the channel numbers of the allocation DM area and the settings

are shown.

m=DM30000+100×unit # (CH)

Allocation DM area (CH)

Writing Value

Settings

Port 1

Port 2

host link mode, 2 stop bits, even parity, data

length 7 bits

m+10

8000

0000

0007

0000

Communication speed 9600 bps.

Communication speed 19200 bps.

Transmit delay time 0 ms.

m+1

m+11

m+2

m+6

m+12

m+16

No CTS control Unit No.0 for host link

Connecting to a CPU Unit

CV-series and CVM1/CV-series (-EVj) CPU Units

• CV500-CPU01-EV1/CV1000-CPU01-EV1/CV2000-CPU01-EV1

• CVM1-CPU01-EV2/CVM1-CPU11-EV2/CVM1-CPU21-EV2

PC Setup

When connecting to a CVM1/CV series CPU, set the following communication

conditions for the PC Setup.

Item

Communications speed

Stop bit

Setting at Host

(*1)

Set the same speed as set at the NT31/NT31C

2 stop bits

Even

Parity

Data length

Unit #

ASCII 7 bits

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

memory switch at the NT31/NT31C. For details, refer to Setting the Host Link

Method (page 160).

Either set PC Setup directly from a Programming Device (e.g. SYSMAC support

software), or transmit the PC Setup made at a Programming Device to the CPU.

For details on the PC Setup, refer to the SYSMAC CVM1/CV500/1000/2000 Op-

eration Manual: Ladder Diagrams (W202-E1-j).

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Connecting to the RS-232C Port at the Host

Section 4-1

Setting the Front Switches

@ I/O port selection (selector switch)

Set this to RS-232C.

@ System setting (DIP SW4)

To effect the existing DIP switch settings,

set SW4 to ON.

To effect the existing PC Setup, set SW4

to OFF.

I/O port selector switch

RS-232C

Note

RS-422A

For CPUs manufactured before or during

June 1995 (lot No. jj65), the existing

DIP switch settings differ from the

existing PC Setup as follows.

- DIP switch settings:

2,400 bps, 1 stop bit, even parity, 7 bit

data length

- PC Setup:

9,600 bps, 2 stop bits, even parity, 7 bit

data length

For CPUs manufactured from July 1995

onward (lot No. jj75), the stipulated

values in the DIP switch settings also are

9,600 bps and 2 stop bits.

C-series C200HS, C200HX/HG/HE(-Z)E, CPM1, CPM2A, CPM2C, CQM1,

CQM1H CPUs, SRM1

The connection method depends upon the model of PC being used, as shown in

the following table.

PC model

Connection method

C200HS, CQM1

Connect to the CPU Unit’s built-in RS-232C port.

C200HX/HG/HE(-Z)E • Connect to the CPU Unit’s built-in RS-232C port.

• Connect to one of the RS-232C ports (port A or port B) on a

Serial Communications Board.

CQM1H

• Connect to the CPU Unit’s built-in RS-232C port.

• Connect to the peripheral port through a CS1W-CN118

Connecting Cable.

• Connect to the RS-232C port (port 1) on a Serial Commu-

nications Board.

CPM1

Connect to the peripheral port through a CPM1-CIF01

RS-232C Adapter.

CPM2A, SRM1

• Connect to the CPU Unit’s built-in RS-232C port.

• Connect to the peripheral port through a CPM1-CIF01

RS-232C Adapter.

CPM2C

Connect to the CPU Unit’s RS-232C port or the peripheral

port through a Connecting Cable (CPM2C-CN111,

CS1W-CN118, or CS1W-CN114).

(The CPM2C-CN111 splits the Unit’s Communication Port

into a RS-232C port and a peripheral port. A CPM1-CIF01

RS-232C Adapter is also required to connect to this

peripheral port.)

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Connecting to the RS-232C Port at the Host

Section 4-1

PC Setup Area Settings

When connecting to a C200HS, C200HX/HG/HE(-Z)E, CPM1, CPM2A,

CPM2C, CQM1, or CQM1H CPU, or SRM1, set the following communication

conditions for the PC Setup area.

Item

Communication mode

Communications speed

Stop bit

Setting at Host

Host link mode

(*1)

Set the same speed as set at the NT31/NT31C

2 stop bits

Even

Parity

Data length

ASCII 7 bits

Unit #

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

memory switch at the NT31/NT31C. For details, refer to Settings the Host Link

Method (page160).

Set the PC Setup area settings directly from a Programming Device (e.g. the

CX-Programmer support software).

For details on operations relating to the PC Setup area, refer to the manual for

the PC which is used.

The PC Setup area word numbers and settings to be made depending on the

unit and port to which the connection is made are shown below.

CPM2A, CPM2C, CQM1H, or SRM1: Peripheral port connection

Word # Writing Value

Settings

DM6650 0001

Host link mode, no CTS control

Communication conditions set by the contents of DM

DM6651 0303

0304

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6653 0000

Unit # 00

C200HS, C200HX/HG/HE(-Z)E, CPM2A, CPM2C, CQM1, CQM1H (other than

the CPU11), or SRM1: Built-in RS-232C port connection

Word # Writing Value

Settings

DM6645 0001

Host link mode, no CTS control

Communication conditions set by the contents of DM

DM6646 0303

0304

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6648 0000

Unit # 00

C200HX/HG/HE(-Z)E: Serial Communications Board port A

CQM1H: Serial Communications Board port 1

Word # Writing Value

Settings

DM6555 0001

Host link mode, no CTS control

Communication conditions set by the contents of DM

DM6556 0303

0304

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6558 0000

Unit # 00

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Connecting to the RS-232C Port at the Host

Section 4-1

C200HX/HG/HE(-Z)E: Serial Communications Board port B

Word # Writing Value

Settings

DM6550 0001

DM6551 0303

0304

Host link mode, no CTS control

Communication conditions set by the contents of DM

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6553 0000

Unit # 00

CPM1: Peripheral port connection through a CPM1-CIF01 RS-232C Adapter

Word # Writing Value

Settings

DM6650 0001

Host link mode

Communication conditions set by the contents of DM

DM6651 0303

0304

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6653 0000

Unit # 00

Connecting to a CPM2C

The CPM2C PCs do not have the same kind of port connectors found on

CS1-series PCs. The CPM2C’s communication port handles both RS-232C and

peripheral port connections which are divided internally. Therefore, when using

the CPM2C, it is necessary to select RS-232C or peripheral port connections,

according to the kind of cable and port (on the cable) used, as shown in the fol-

lowing table. Refer to the CPM2C Operation Manual for more details.

Port connecting to PT

PC Setup

RS-232C port (D-Sub 9-pin) of CPM2C-CN111 Built-in RS-232C port settings

Peripheral port of CPM2C-CN111

Peripheral port settings

Built-in RS-232C port settings

Peripheral port settings

RS-232C port (D-Sub 9-pin) of CS1W-CN118

Peripheral port of CS1W-CN114

Peripheral port

CPM2C-CN111

CPM2C

CS1W-CN118

CS1W-CN114

Peripheral port

RS-232C port

(D-Sub 9-pin, female)

RS-232C port

(D-Sub 9-pin, female)

Setting the DIP Switches of a C200HX/HG/HE(-Z)E, CQM1, or CQM1H

When using a C200HX/HG/HE(-Z)E, CQM1, or CQM1H, the DIP switches on

the front panel must be set as shown below in order to make the settings in the

PC Setup area (data memory) effective.

C200HX/HG/HE(-Z)E

CQM1

CQM1H

RS-232C port communication condition setting

Set DIP SW5 to OFF to make the settings made

in PC Setup effective.

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Connecting to the RS-232C Port at the Host

Section 4-1

When using the CQM1H’s built-in peripheral port, turn ON SW7.

Setting the Switches of a CPM2A

When using a CPM2A, the switches on the front panel must be set as shown

below in order to make the PC Setup settings effective.

Set the Communications

switch to OFF (down

position).

Setting the Switches of a CPM2C

When using a CPM2C, the switches on the front panel must be set as shown

below in order to make the PC Setup settings effective.

The settings for SW1 and SW2 depend upon the usage of the

peripheral port and RS-232C port.

S Connecting PT to peripheral port

S Connecting PT to built-in RS-232C port

(A device that requires non-standard communications settings

is connected to the peripheral port.)

SW1: OFF

SW2: ON

S Connecting PT to built-in RS-232C port

(A Programming Console is connected to the peripheral port.)

SW1: OFF

SW2: OFF

Setting the Switches on an RS-232C Adapter

When using a CPM1-CIF01 RS-232C Adapter, set the mode switch as shown in

the following diagram.

CPM1-

CIF01

CPM1

Set the mode setting switch to HOST (upper position).

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Connecting to the RS-232C Port at the Host

Section 4-1

CS1 series CPU type : CS1G/H-CPUjj-E (-V1)

Connect to the built-in RS-232C port of the CPU, or the RS-232C port of the

communication board. Note that the connection to a peripheral port must be

made via an RS-232C adapter (CS1W-CN118) specially designed for connect-

ing to a peripheral port.

PC Setup

When connecting to a CS1 series CPU, set the following communication condi-

tions for the PC Setup area. Since the settings shown below are the PC default

settings for the CPU, no change to the PC Setup is necessary as long as the

communication speed is maintained at 9600 bps.

Item

Communication speed

Stop bits

Setting at Host

Set the same speed as set at the NT31/NT31C(*1)

2 stop bits

Even

Parity

Data length

ASCII 7 bits

Unit No. for the host link

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

memory switch at the NT31/NT31C. For details, refer to Settings the Host Link

Method (page 160). When the communication speed is set to 19200 bps, the PC

Setup of the CPU need to be changed.

Either set the PC Setup directly from a Programming Device (Programming

Console), or transmit the PC Setup made at a Programming Device (CX-Pro-

grammer) to the CPU.

For details on PC Setup, refer to the SYSMAC CS1-series Operation Manual

(W339-E1-j).

When using the built-in RS-232C port of CS1G/H

Word #

Writing Value

Settings

Host link mode, data length 7 bits,

2 stop bits, even parity

160

8000

0000

0007

0000

Communication speed: 9600 bps.

Communication speed: 19200 bps.

Unit #00

161

166

When using the peripheral port of CS1G/H

Word #

Writing Value

Settings

Host link mode, data length 7 bits,

2 stop bits, even parity

144

8000

0000

0007

0000

Communication speed: 9600 bps.

Communication speed: 19200 bps.

Unit #00

145

150

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Connecting to the RS-232C Port at the Host

Section 4-1

Setting the Front Switches

Set the CPU DIP switches to 4 or 5 in accordance with the port NT31/NT31C is

connected to.

RUN

ERR/ALM

INH

PRPHL/COMM

SYSMAC CS1G

PROGRAMMABLE CONTROLLER

CPU42

Peripheral port

DIP switches (inside the battery storage)

OPEN

This is used mainly for

connection to the

Programming Device.

(This also supports the

RS-232C unit connection.)

• Set SW4 to ON (establishing communication in ac-

cordance with PC Setup) when connecting the

NT31/NT31C to the peripheral port.

MCPWR

OPEN

BUSY

• Set SW5 to OFF (establishing communication in ac-

cordance with PC Setup) when connecting the

NT31/NT31C to the RS-232C port.

PERIPHERAL

RS-232 port

This is used mainly for

connection to the

RS-232C unit.

(This also supports the

CX-Programmer.)

PORT

Connecting to CS1-series Serial Communications Board

Serial Communications Board equipped with a RS-232C port for CS1-series

CPU Units: CS1W-SCB41/21

Allocation DM Area Settings for CPU Unit

Settings are written from the Programming Device (a Programming Console or

CX-Programmer) directly into the allocation DM area (system setting area) of

the CPU. After the settings are written, they become effective by turning the

power ON, restarting the unit, restarting the communication port, or execution of

the STUP command.

In the following, the channel numbers of the allocation DM area and the settings

are shown.

Allocation DM area (CH)

Writing Value

Settings

Port 1

Port 2

Host link mode, 2 stop bits, even parity, data

length 7 bits

DM32000

DM32001

DM32010

8000

0000

0007

0000

Communication speed 9600 bps.

Communication speed 19200 bps.

Transmit delay time 0 ms.

DM32011

DM32002

DM32006

DM32012

DM32016

No CTS control Unit No.0 for host link

When Using the NT Link (1:1) Method

Compatible Host Units

Some models and series of OMRON PCs have the NT link (1:1) function built in.

With CQM1H PCs, a Serial Communications Board can be added to provide 1:1

NT Link communications. Some C200HX/HG/HE(-Z)E CPUs can be connected

by the NT link (1:1) method by installing a Communication Board.

Check the model and series of the PC against the type of CPU before making the

connections.

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Connecting to the RS-232C Port at the Host

Section 4-1

The host units that can be connected to the NT31/NT31C by the NT link (1:1)

method using the RS-232C ports of both units are indicated in the table below.

CPUs Connectable with

CPUs with Built-in

NT Link Function

Connectable

Expansion

PC Series

Communication

(*1)

Board

C200HS-CPU21-E, -EC

C200HS-CPU23-E

C200HS-CPU31-E

C200HS-CPU33-E

---

C200HS

C200HE-CPU32-(Z)E

C200HE-CPU42-(Z)E

C200HE (-Z)E

C200HG-CPU33-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU53-(Z)E

C200HG-CPU63-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HG

(-Z)E

C200HX-CPU34-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU54-(Z)E

C200HX-CPU64-(Z)E

C200HX-CPU65-ZE

C200HX-CPU85-ZE

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

X200HX-CPU65-ZE

C200HX-CPU85-ZE

C200HX (-Z)E

(*2)

CPM1-10CDR-j

CPM1-20CDR-j

CPM1-30CDR-j

---

C series

(*2)

CPM1A-10CDj-j

CPM1A-20CDj-j

CPM1A-30CDj-j

CPM1A-40CDj-j

CPM1

CPM2A-30CDjj-j

CPM2A-40CDjj-j

CPM2A-60CDjj-j

---

CPM2A

CPM2C

(*3)

CPM2C-10jjjjjj-j

CPM2C-20jjjjjj-j

---

CQM1-CPU41-EV1

CQM1-CPU42-EV1

CQM1-CPU43-EV1

CQM1-CPU44-EV1

CQM1-CPU45-EV1

CQM1

(*4)

CQM1H-CPU21-E

CQM1H-CPU51-E

CQM1H-CPU61-E

CQM1H-CPU51

CQM1H-CPU61

CQM1H

CV500-CPU01-EV1

CV1000-CPU01-EV1

CV2000-CPU01-EV1

---

CV500

(*5)

CV series

CV1000

CV2000

CVM1-CPU01-EV2

CVM1-CPU11-EV2

CVM1-CPU21-EV2

CVM1 series

CVM1

SRM1

(*5)

CompoBus/S

master

---

SRM1-C02-V1

control unit

*1 One of the following communication boards is required:

C200HW-COM02/COM04/COM05/COM06-EV1.

*2 A CPM1-CIF01 adapter is required.

*3 Use a CPM2C-CN111 or CS1W-CN114/118 Connecting Cable, CPM1-CIF01

RS-232C Adapter, or CPM1-CIF11 RS-422A Adapter to connect.

*4 A CQM1H-SCB41 Serial Communications Board is required.

*5 CPUs of CVM1/CV series PCs without the suffix -EVj cannot be connected.

Reference: CS1 series CPU cannot be connected with the 1:1 connection NT link method.

Use the 1:N connection NT link method (standard or high-speed) instead to

make the 1:1 connection. For details, refer to Using the NT Link (1:N) Method

(page 72) or Using the High-speed NT Link (1:N) Method (page 75).

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Connecting to the RS-232C Port at the Host

Section 4-1

Settings at The Host

The setting methods for each unit are as follows:

Connecting to a C-series C200HS, C200HX/HG/HE(-Z)E, CPM1, CPM2A,

CPM2C, CQM1, CQM1H, or SRM1

PC Setup Area Settings

Write the PC Setup area (data memory) settings directly from a Programming

Device (e.g. SYSMAC support software) in accordance with the host model and

port.

Host Model

Word #

Writing Value

Setting

RS-232C port of C200HS,

C200HX/HG/HE(-Z)E, CPM2A,

CPM2C, CQM1, CQM1H, SRM1

DM6645

(*1)

Use NT link

(1:1)

Port A of C200HX/HG/HE(-Z)E

4000

DM6555

(*2)

Port 1 of CQM1H

(*1)

Port B of C200HX/HG/HE(-Z)E

CPM1

DM6550

DM6650

*1 RS-232C port of the Communication Board

*2 RS-232C port of the Serial Communications Board

For details on operations relating to the PC Setup area, refer to the manual for

the PC which is used.

Connecting to a CPM2C

The CPM2C PCs do not have the same kind of port connectors found on

CS1-series PCs. The CPM2C’s communication port handles both RS-232C and

peripheral port connections which are divided internally. Therefore, when using

the CPM2C, it is necessary to select RS-232C or peripheral port connections,

according to the kind of cable and port (on the cable) used, as shown in the fol-

lowing table. Refer to the CPM2C Operation Manual for more details.

Port connecting to PT

PC Setup

RS-232C port (D-Sub 9-pin) of CPM2C-CN111 Built-in RS-232C port settings

Peripheral port of CPM2C-CN111

Peripheral port settings

Built-in RS-232C port settings

Peripheral port settings

RS-232C port (D-Sub 9-pin) of CS1W-CN118

Peripheral port of CS1W-CN114

Peripheral port

CPM2C-CN111

CPM2C

CS1W-CN118

CS1W-CN114

Peripheral port

RS-232C port

(D-Sub 9-pin, female)

RS-232C port

(D-Sub 9-pin, female)

Setting the DIP Switches on the Front of a C200HX/HG/HE(-Z)E, CQM1,

CQM1H

When using a C200HX/HG/HE(-Z)E, CQM1, or CQM1H, the DIP switches on

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Connecting to the RS-232C Port at the Host

Section 4-1

the front panel must be set as shown below in order to make the settings in the

PC Setup area (data memory) effective.

C200HX/HG/HE(-Z)E

CQM1

CQM1H

RS-232C port communication condition setting

Set DIP SW5 to OFF to make the settings

made in PC Setup effective.

Setting the Switches of a CPM2A

When using a CPM2A, the switches on the front panel must be set as shown

below in order to make the PC Setup settings effective.

Set the Communications

switch to OFF (down

position).

Setting the Switches of a CPM2C

When using a CPM2C, the switches on the front panel must be set as shown

below in order to make the PC Setup settings effective.

The settings for SW1 and SW2 depend upon the usage of the

peripheral port and RS-232C port.

S Connecting PT to peripheral port

S Connecting PT to built-in RS-232C port

(A device that requires non-standard communications settings

is connected to the peripheral port.)

SW1: OFF

SW2: ON

S Connecting PT to built-in RS-232C port

(A Programming Console is connected to the peripheral port.)

SW1: OFF

SW2: OFF

Setting the Switches on an RS-232C Adapter

When using a CPM1-CIF01 RS-232C Adapter, set the mode switch as shown in

the following diagram.

CPM1-

CIF01

Set the mode setting switch to NT (lower position).

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Connecting to the RS-232C Port at the Host

Section 4-1

Connecting to CVM1/CV Series (-EVj)

Set the DIP switches on the front panel as follows.

I/O port selection (selector switch)

Set this to RS-232C.

DIP switch setting (SW3)

Set SW3 to use NT link

(ON, right side).

OFF

When using the CVM1/CV series, CPU execution processing (execution control

2) in the PC Setup must be set to Simultaneous processing.

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Connecting to the RS-232C Port at the Host

Section 4-1

Using the NT Link (1:N) Method

Compatible Host Units

The OMRON PCs that can be connected using the NT link (1:N) method are the

CS1-series CS1G/H and the C-series C200HX/HG/HE(-Z)E, CQM1H, and

SRM1 only. With the CS1-series PCs, it is possible to connect a 1:N NT Link us-

ing a CS1W-SCU21 Serial Communications Unit.

Check the model and series of the PC as well as the model of Serial Commu-

nications Board or Unit being used before making the connections.

The host units that can be connected to the NT31/NT31C by the NT link (1:N)

method using the RS-232C ports of both units are indicated in the table below.

CPUs Connectable with

CPUs with Built-in

NT Link Function

Connectable

PC Series

Communications Board

(*1)

or Unit

CS1G-CPU42/43/44/

45-EV1

CS1G

CS1H

45-EV1

CS1H-CPU63/64/65/

66/67-EV1

CS1 series

CS1H-CPU63/64/65/

66/67-EV1

(*2)

C200HE-CPU32-(Z)E

C200HE

(-Z)E

C200HE-CPU42-(Z)E

(*2)

C200HE-CPU42-(Z)E

(*2)

C200HG-CPU33-(Z)E

(*2)

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HG

(-Z)E

(*2)

C200HG-CPU53-(Z)E

(*2)

C200HG-CPU63-(Z)E

(*2)

C200HX-CPU34-(Z)E

C series

(*2)

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

C200HX-CPU65-ZE

C200HX-CPU85-ZE

(*2)

C200HX-CPU54-(Z)E

C200HX

(-Z)E

(*2)

C200HX-CPU64-(Z)E

(*2)

C200HX-CPU65-ZE

(*2)

C200HX-CPU85-ZE

(*3)

CQM1H-CPU51

---

CQM1H

SRM1

(*3)

CQM1H-CPU61

CompoBus/S

Master

Control Unit

SRM1-C02-V2

---

*1 A CS1W-SCB21 or CS1W-SCB41 Serial Communication Board or

CS1W-SCU21 Serial Communications Unit is required.

*2 One of the following Communication Boards is required:

C200HW-COM02/COM04/COM05/COM06 (-EV1)

*3 A CQM1H-SCB41 Serial Communication Board is required.

Reference: The -V1 versions of CS1-series PCs support the high-speed 1:N NT Link as well

as the standard 1:N NT Link. Furthermore, the high-speed 1:N NT Link can be

used in earlier versions of CS1-series PCs by installing a new version of Serial

Communications Board or Unit. For details, refer to Using the High-speed NT

Link (1:N) Method (page 75).

Settings at the Host

The Settings required for each Unit are described below.

• Connecting a C-series C200HX/HG/HE(-Z)E, CQM1H, or SRM1

PC Setup Area Settings

Write the PC Setup area (data memory) settings directly from a Programming

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Connecting to the RS-232C Port at the Host

Section 4-1

Device (e.g. SYSMAC support software) in accordance with the host model and

port.

Writing

Value

Connection to

Word #

Setting

C200HX/HG/HE(-Z)E, SRM1

Built-in RS-232C port

DM6645

Use NT link (1:N)

C200HX/HG/HE(-Z)E

j = highest unit number of

Communication Board port A

DM6555

DM6550

5j00

the connected PTs (1 to 7)

CQM1H port 1

(*3)

C200HX/HG/HE(-Z)E

Communication Board port B

*1 RS-232C port on the Communications Board

*2 RS-232C port on the Serial Communications Board

*3 When using a C200HE (-Z)E, the maximum PT unit number is 3.

Refer to the PC’s operation manual for details on changing PC Setup settings.

Setting the DIP Switches of a C200HX/HG/HE(-Z)E

When using a C200HX/HG/HE(-Z)E, the DIP switches on the front panel must

be set as shown below in order to make the settings in the PC Setup area (data

memory) effective.

RS-232C port communication condition setting

Set DIP SW5 to OFF to make the settings made in PC

Setup effective.

Connecting to CS1-series CPU Units

CS1-series CPU Unit: CS1G/H-CPUjj-E(V1)

The PT is connected to the built-in RS-232C port on the CPU Unit or an RS-232C

port on a Communications Board. It can also be connected to the peripheral port

on the CPU Unit, but a CS1W-CN118 Peripheral Port Connecting Cable must be

used.

PC Setup

When connecting to a CS1 series CPU, set the following communication condi-

tions for the PC Setup area, in accordance with the communication port to be

used.

When using the built-in RS-232C port of CS1G/H

Word #

160

Writing Value

8200

Settings

NT link (1:N) mode

(*1)

161

166

0000 to 0009

Communications baud rate (standard)

j = The largest model number of the

connected PT (0 – 7)

000j

*1 Set any value between 0000 and 0009 Hex for the communications baud rate.

The same baud rate will be used regardless of the value as long as it is between

0000 and 0009 Hex.

When using the peripheral port of CS1G/H

Word #

144

Writing Value

8200

Settings

NT link (1:N) mode

(*1)

145

150

0000 to 0009

Communications baud rate (standard)

j = The largest model number of the

connected PT (0 – 7)

000j

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Connecting to the RS-232C Port at the Host

Section 4-1

*1 Set any value between 0000 and 0009 Hex for the communications baud rate.

The same baud rate will be used regardless of the value as long as it is between

0000 and 0009 Hex.

When connecting PT with its model number 0, 2-5 to the built-in RS-232C port,

for example, set the value 8200 Hex to 160 CH, and 0005 Hex to 166CH.

Either set PC Setup directly from a Programming Device (Programming Con-

sole), or transmit the PC Setup made at a Programming Device (CX-Program-

mer) to the CPU.

For details on PC Setup, refer to the SYSMAC CS1-series Operation Manual

(W339-E1-j).

Setting the Front Switches

Set the CPU DIP switch to 4 or 5 in accordance with the port NT31/NT31C is

connected to.

RUN

ERR/ALM

INH

PRPHL/COMM

SYSMAC CS1G

PROGRAMMABLE CONTROLLER

CPU42

DIP switches (inside the battery storage)

OPEN

Peripheral port

• Set SW4 to ON (establishing communication in ac-

cordance with PC Setup) when connecting the

NT31/NT31C to the peripheral port.

This is used mainly for

connection to the

Programming Device.

(This also supports the

RS-232C unit connection.)

MCPWR

OPEN

BUSY

• Set SW5 to OFF (establishing communication in ac-

cordance with PC Setup) when connecting the

NT31/NT31C to the RS-232C port.

PERIPHERAL

RS-232 port

This is used mainly for

connection to the

RS-232C unit.

(This also supports the

CX-Programmer.)

PORT

Connecting to CS1 Series Serial Communications Board

Serial Communications Board equipped with a RS-232C port for CS1-series

CPU Units: CS1W-SCB41/21

CPU Allocation DM Area Settings

Setting is written from the Programming Device (a Programming Console or CX-

Programmer) directly into the allocation DM area (system setting area) of the

CPU. After the setting is written, it becomes effective by turning the power ON,

restarting the unit, restarting the communication port, or execution of the STUP

command.

In the following, the channel numbers of the allocation DM area and settings are

shown.

Allocation DM area (CH)

Writing Value

8200

Settings

NT link (1:N) mode

Port 1

DM32000

DM32001

Port 2

DM32010

DM32011

(*1)

0000 to 0009

Communications baud rate

(standard)

j = The largest model number of

the connected PT (0 – 7)

DM32006

DM32016

000j

*1 Set any value between 0000 and 0009 Hex for the communications baud rate.

The same baud rate will be used regardless of the value as long as it is between

0000 and 0009 Hex.

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Connecting to the RS-232C Port at the Host

Section 4-1

When connecting PTs with model numbers 3 to 6 to port 1, for example, set the

value 8200 Hex to DM32000, 0000 Hex to DM32001, and 0006 Hex to

DM32006.

Connecting to CS1 Series Serial Communication Unit

A CS1 series backplane mounted type : CS1W-SCU21

Setting the Front Switches

Set the unit number of the serial communication unit by using the rotary switch

located on the front panel. Set each switch with a flat blade screwdriver so that

the values or symbols in the setting value window agree with the following.

SCU21

RDY

ERH

SD2

RD2

RUN

ERC

SD1

RD1

UNIT

Set the unit number to 0 through F so

that it will not overlap with the numbers

used in other units.

No.

Allocation DM Area Settings for CPU

Setting is written from the Programming Device (a Programming Console or CX-

Programmer) directly into the allocation DM area (system setting area) of the

CPU. After the setting is written, it becomes effective by turning the power ON,

restarting the unit, restarting the communication port, or execution of the STUP

command.

In the following, the channel numbers of the allocation DM area and settings are

shown.

m=DM30000+100*unit number (CH)

Allocation DM area (CH)

Writing Value

8200

Settings

NT link (1:N) mode

Port 1

Port 2

m+10

(*1)

m+1

m+11

0000 to 0009

Communications baud rate

(standard)

j = The largest model number of

the connected PT (0 - 7)

m+6

m+16

000j

*1 Set any value between 0000 and 0009 Hex for the communications baud rate.

The same baud rate will be used regardless of the value as long as it is between

0000 and 0009 Hex.

Using the High-speed NT Link (1:N) Method

Compatible Host Units

Only the -V1 versions of OMRON’s CS1H and CS1G PCs support the high-

speed 1:N NT Link directly. Other CS1-series PCs can use the high-speed 1:N

NT Link indirectly through a CS1W-SCU21 Serial Communications Unit. (If a

Serial Communications Unit is used, even CS1-series Units without the “-V1”

suffix can be connected via high-speed 1:N NT Link.)

Be sure to check the model number of the PC and Serial Communications

Board/Unit before trying to establish the high-speed 1:N NT Link.

The following table shows which CS1-series PCs can be connected to an

NT31/NT31C with the high-speed 1:N NT Link.

CPU Units with Built-in

NT Link Function

CPUs Connectable only through a

Serial Communication Board or Unit

(*1)

(*2)

CS1G-CPU42/43/44/45-EV1

CS1G-CPU42/43/44/45-E(V1)

(*1)

(*2)

CS1H-CPU63/64/65/66/67-EV1

CS1H-CPU63/64/65/66/67-E(V1)

*1 The high-speed 1:N NT Link is not supported in a direct connection to the CPU

Unit of a CS1-series PC without the -V1 suffix.

*2 A CS1W-SCB21 or CS1W-SCB41 Serial Communication Board or

CS1W-SCU21 Serial Communications Unit is required.

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Connecting to the RS-232C Port at the Host

Section 4-1

Settings at the Host

The Settings required for each Unit are described below.

• Connecting CS1-series CPU Units

CS1 series CPU type : CS1G/H-CPUjj-EV1

PC Setup

When connecting to a CS1 series CPU, set the following communication condi-

tions for the PC Setup area, in accordance with the communication port to be

used.

When using the built-in RS-232C port of CS1G/H

Word #

160

Writing Value

8200

Settings

NT link (1:N) mode

161

166

000A

Communications baud rate (high-speed)

j = The largest model number of the

connected PT (0 – 7)

000j

When using the peripheral port of CS1G/H

Word #

144

Writing Value

8200

Settings

NT link (1:N) mode

145

150

000A

Communications baud rate (high-speed)

j = The largest model number of the

connected PT (0 – 7)

000j

When connecting PTs with model numbers 0, 2, 3, 4, and 5 to the built-in

RS-232C port, for example, set the value 8200 Hex to word 160, 000A Hex to

word 161, and 0005 Hex to word 166.

Either set PC Setup directly from a Programming Device (Programming Con-

sole), or transmit the PC Setup made at a Programming Device (CX-Program-

mer) to the CPU.

For details on PC Setup, refer to the SYSMAC CS1-series Operation Manual

(W339-E1-j).

Reference: When using the CX-Programmer to set the high-speed 1:N NT Link, set the com-

munications baud rate to 115,200 bps.

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Connecting to the RS-232C Port at the Host

Section 4-1

Setting the Front Switches

Set the CPU DIP switch to 4 or 5 in accordance with the port NT31/NT31C is

connected to.

RUN

ERR/ALM

INH

PRPHL/COMM

SYSMAC CS1G

PROGRAMMABLE CONTROLLER

CPU42

DIP switches (inside the battery storage)

OPEN

Peripheral port

• Set SW4 to ON (establishing communication in ac-

cordance with PC Setup) when connecting the

NT31/NT31C to the peripheral port.

This is used mainly for

connection to the

Programming Device.

(This also supports

connection of RS-232C

devices.)

MCPWR

OPEN

BUSY

• Set SW5 to OFF (establishing communication in ac-

cordance with PC Setup) when connecting the

NT31/NT31C to the RS-232C port.

PERIPHERAL

RS-232 port

This is used mainly for

connection of RS-232C

devices.

(This also supports the

connection of

CX-Programmer.)

PORT

Connecting to a CS1 Series Serial Communications Board

Serial Communications Board equipped with a RS-232C port for CS1-series

CPU Units: CS1W-SCB41/21

Reference: Serial Communications Boards and Serial Communications Units with lot num-

ber 991220 (12/20/99) and later support the high-speed 1:N NT Link. Boards and

Units with earlier lot numbers cannot be used.

CPU Allocation DM Area Settings

Setting is written from the Programming Device (a Programming Console or CX-

Programmer) directly into the allocation DM area (system setting area) of the

CPU. After the setting is written, it becomes effective by turning the power ON,

restarting the unit, restarting the communication port, or execution of the STUP

command.

In the following, the channel numbers of the allocation DM area and settings are

shown.

Allocation DM area (CH)

Writing

Settings

Value

Port 1

DM32000

DM32001

Port 2

DM32010

DM32011

8200

NT link (1:N) mode

000A

Communications baud rate (high-speed)

j = The largest model number of the

connected PT (0 – 7)

DM32006

DM32016

000j

For example, when connecting PTs with model numbers 3, 4, 5, and 6 to port 1,

set the value 8200 Hex to DM32000, 000A Hex to DM32001, and 0006 Hex to

DM32006.

Connecting to a CS1 Series Serial Communication Unit

A CS1 series backplane mounted type : CS1W-SCU21

Reference: Serial Communications Boards and Serial Communications Units with lot num-

ber 991220 (12/20/99) and later support the high-speed 1:N NT Link. Boards and

Units with earlier lot numbers cannot be used.

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Connecting to the RS-232C Port at the Host

Section 4-1

Setting the Front Switches

Set the unit number of the serial communication unit by using the rotary switch

located on the front panel. Set each switch with a flat blade screwdriver so that

the values or symbols in the setting value window agree with the following.

SCU21

RDY

ERH

SD2

RD2

RUN

ERC

SD1

RD1

UNIT

Set the unit number to 0 through F so

that it will not overlap with the numbers

used in other units.

No.

Allocation DM Area Settings for CPU

Setting is written from the Programming Device (a Programming Console or CX-

Programmer) directly into the allocation DM area (system setting area) of the

CPU. After the setting is written, it becomes effective by turning the power ON,

restarting the unit, restarting the communication port, or execution of the STUP

command.

In the following, the channel numbers of the allocation DM area and settings are

shown.

Word m = DM30000 + (100 × unit number)

Allocation DM area (CH)

Writing

Settings

Value

Port 1

Port 2

m+10

8200

NT link (1:N) mode

m+1

m+6

m+11

m+16

000A

Communications baud rate (high-speed)

j = The largest model number of the

connected PT (0 - 7)

000j

When Using the Memory

Link Method

In the memory link method, the connection can be made to a personal computer

with RS-232 and an FA computer, etc.

When connecting to the host in the memory link method, it is necessary to create

a program for the memory link at the host side.

The following are the communication conditions that can be used in the memory

link method. For the host (a personal computer, an FA computer, etc.), its setting

should be compatible to one of the communication conditions listed in the follow-

ing table. Set the same communication conditions at the NT31/NT31C by the

memory switch. (page 165).

Item

Input/Output port

Communication speed

Data bits length

Stop bits length

Parity

Settings at the host

RS-232C

1200, 2400, 4800, 9600, 19200, 38400 bps.

7 bits, 8 bits

1 bits, 2 bits

None, even, odd

Flow control

None, RS/CS, XON/XOFF

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Connecting to the RS-232C Port at the Host

Section 4-1

4-1-2 Connecting Directly between RS-232C Ports

The method for connection between the RS-232C ports of the NT31/NT31C and

the host is described here.

Host link unit/CPU

NT31/NT31C

SYSMAC

C-series PC,

CVM1/CV-series PC,

PLC, SRM1

Serial port A (RS-232C, 9-pin type)

Serial port B (RS-232C, 25-pin type)

9-pin connector

or 25-pin

connector

Cable with RS-232C connectors

Recommended Connector Cable

When making the connector cable, as far as possible use the recommended

connectors, connector hoods, and cables indicated in the table below. Some

units come supplied with one connector and one connector hood.

Check the required components and prepare them in advance.

Name

Model

Remarks

Delivered with

CS1-series CS1G/CS1H

C-series CQM1,

C200HS,

9-pin

XM2A-0901

C200HX/HG/HE(-Z)E,

CVM1/CV-series CPUs

CV500-LK201

Made by OMRON

Connector

C500-LK203

25-pin

CV500-LK201

C200H-LK201-EV1

XM24-2501

DB-25P

Made by OMRON

25-pin

3G2A5-LK201-EV1

3G2A6-LK201-EV1

Made by JAE

C-series CQM1,

C200HS,

9-pin

C200HX/HG/HE-(Z)E,

CVM1/CV-series CPUs

CV500-LK201

XM2S-0911

Made by OMRON

9-pin

Made by OMRON

XM2S-0913

Connector

hood

CS1-series CS1G/CS1H

9-pin

Made by OMRON

XM2S-0911-E

C500-LK203

25-pin

Made by OMRON

CV500-LK201

C200H-LK201-EV1

XM2S-2511

DB-C2-J9

25-pin

3G2A5-LK201-EV1

3G2A6-LK201-EV1

Made by JAE

AWG28 5P

Multi-core shielded cable

Made by Fujikura, Ltd.

Multi-core shielded cable

IFVV-SB

Cable

CO-MA-VV-SB

Made by Hitachi Cable,

Ltd.

5P 28AWG

Note After connecting a communication cable, always secure it with the screws.

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Connecting to the RS-232C Port at the Host

Section 4-1

OMRON Cables with Connectors

When a connection is made at serial port A in other than the memory link meth-

od, OMRON cables with connectors shown below are available.

Model

XW2Z-200S

XW2Z-500S

XW2Z-200T

XW2Z-500T

Cable Length

Connector Specification

2 m

5 m

2 m

5 m

9-pin ⇔ 25 pin

9-pin ⇔ 9-pin

When a connection is made to a personal computer at serial port A in the

memory link method, OMRON cable with connectors shown below are avail-

able.

Model

Cable Length

Connector Specification

9-pin ⇔ 25 pin

CV500-CN228

XW2Z-S002

2 m

9-pin ⇔ 9 pin

When a connection is made at serial port B in other than the memory link meth-

od, OMRON cables with connectors shown are available.

Model

XW2Z-200P

XW2Z-500P

XW2Z-200S

XW2Z-500S

Cable Length

Connector Specification

2 m

5 m

2 m

5 m

25-pin ⇔ 25 pin

25-pin ⇔ 9-pin

Note The cable’s tensile load is 30 N. Do not subject it to loads greater than this.

Wiring for a Host Link

Unit (25-pin) Connection

Applicable units: C200H-LK201-EV1

3G2A5-LK201-EV1

C500-LK203

3G2A6-LK201-EV1

CV500-LK201 (communication port 1)

Cables with connectors that can be used at serial port A:

XW2Z-200S (9-pin ⇔ 25-pin, 2 m)

XW2Z-500S (9-pin ⇔ 25-pin, 5 m)

Cables with connectors that can be used at serial port B:

XW2Z-200P (25-pin ⇔ 25-pin, 2 m)

XW2Z-500P (25-pin ⇔ 25-pin, 5 m)

CVM1/CV-series host link units (CV500-LK201) have two types of connector; a

25-pin connector (communication port 1), and a 9-pin connector (communica-

tion port 2). When using communication port 2, refer to Wiring for Other Connec-

tions (Other Than the Memory Link Method) (page81).

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Connecting to the RS-232C Port at the Host

Section 4-1

Serial Port A

NT31/NT31C

PC (host link unit)

Abbreviation

number

Connector

hood

Shielding wire

number

–

RS-232C

interface

RS-232C

interface

–

+5V

–

(9-pin type)

–

(25-pin type)

* For units that have a CTS setting selector switch, RS and CS do not have to be

shorted if this switch is set to 0V.

Serial Port B

NT31/NT31C

PC (host link unit)

Abbreviation

number

Shielding wire

number

Connector

hood

–

RS-232C

interface

RS-232C/

422A/485

interface

–

TRM

RDB (+)

SDB (+)

–

(25-pin

type)

–

SDA (–)

RDA (–)

–

RSB (+)

RSA (–)

–

(25-pin type)

* For units that have a CTS setting selector switch, RS and CS do not have to be

shorted if this switch is set to 0V.

Wiring for Other

Connections

Applicable units :

CV500-LK201 (communication port 2)

CS1W-SCU21

CPM1-10CDR-j

CPM1A-10CDj-j

CPM1A-30CDj-j

CPM2A-30CDj-j

CPM2A-60CDj-j

CPM1-20CDR-j

CPM1A-20CDj-j

CPM1A-40CDj-j

CPM2A-40CDj-j

CPM2C-10jjjjjj-j CPM2C-20jjjjjj-j

CQM1-CPU21-E

CQM1-CPU41-EV1

CQM1-CPU43-EV1

CQM1H-CPU11

CQM1-CPU42-EV1

CQM1-CPU44-EV1

CQM1H-CPU21

CQM1H-CPU51

CQM1H-CPU61

CS1G-CPU42-E(V1)

CS1G-CPU43-E(V1)

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Connecting to the RS-232C Port at the Host

Section 4-1

CS1G-CPU44-E(V1)

CS1G-CPU45-E(V1)

CS1H-CPU64-E(V1)

CS1H-CPU66-E(V1)

CS1H-CPU63-E(V1)

CS1H-CPU65-E(V1)

CS1H-CUP67-E(V1)

C200HS-CPU21-E, -EC

C200HS-CPU31-E

C200HE-CPU32-(Z)E

C200HG-CPU33-(Z)E

C200HG-CPU53-(Z)E

C200HX-CPU34-(Z)E

C200HX-CPU54-(Z)E

C200HX-CPU65-ZE

CV500-CPU01-EV1

CV2000-CPU01-EV1

CVM1-CPU01-EV2

CVM1-CPU21-EV2

SRM1-C02-V2

C200HS-CPU23-E

C200HS-CPU33-E

C200HE-CPU42-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

C200HX-CPU85-ZE

CV1000-CPU01-EV1

CVM1-CPU11-EV2

Cables with connectors that can be used at serial port A:

XW2Z-200T (9-pin ⇔ 9-pin, 2 m)

XW2Z-500T (9-pin ⇔ 9-pin, 5 m)

Cables with connectors that can be used at serial port B:

XW2Z-200S (25-pin ⇔ 9-pin, 2 m)

XW2Z-500S (25-pin ⇔ 9-pin, 5 m)

CPUs of CVM1/CV-series PCs without the suffix -EVj cannot be connected by

any connection method.

Serial Port A

NT31/NT31C

PC (Host link unit)

Abbreviation

number

Shielding wire

Connector

hood

–

+5V

–

RS-232C

interface

RS-232C

interface

+5V

DSR

–

(9-pin type)

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Connecting to the RS-232C Port at the Host

Section 4-1

Serial Port B

NT31/NT31C

PC (Host link unit)

Abbreviation

Shielding wire

–

TRM

RDB (+)

SDB (+)

(9-pin type)

–

SDA (–)

RDA (–)

–

RSB (+)

RSA (–)

–

(25-pin type)

* In case 0V is set for those unit which has CTS setting selector, it is not necessary

to shorten between RS and CS.

Wiring for a Memory Link

Connection

Cables with connectors that can be used at serial port A:

CV500-CN228 (9-pin⇔25-pin, 2 m)

XW2Z-S002 (9-pin⇔9-pin, 2 m)

Serial Port A

Prepare the adapter cable while referring to the following diagram.

PC (Host link unit)

NT31/NT31C

Abbreviation

Abbreviation Pin number

Shielding wire

Connector

hood

Connector

hood

−

+5V

−

RS-232C

connector

−

(9-pin type)

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Connecting to the RS-232C Port at the Host

Section 4-1

Serial Port B

Prepare the adapter cable while referring to the following diagram.

NT31/NT31C

PC (Host link unit)

Abbreviation

Abbreviation Pin number

Shielding wire

Connector

hood

Connector

hood

–

RS-232C

connector

RS-232C

/422A/485

connector

–

TRM

RDB (+)

SDB (+)

–

SDA (–)

RDA (–)

–

RSB (+)

RSA (–)

–

(25-pin type)

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SECTION 5

Connecting to the Host from the RS-422A/485 Port

This section describes the method for connecting to the host using the RS-422A/485 port of the PT.

5-1 Connecting to the Host’s RS-232C Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-1 The Type of Host and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-2 1:1 Connection between RS-422A/485 at the PT and RS-232C at the Host . . . . .

5-1-3 1:N Connection between RS-422A/485 at the PT and RS-232C at the Host . . . .

5-1-4 Recommended Connectors, Cables, and Crimp Terminals . . . . . . . . . . . . . . . . . .

5-1-5 Setting the Terminal Resistance for RS-422A/485 Communications . . . . . . . . . .

5-2 Connecting to the Host’s RS-422A/485 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-1 Host Types and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-2 Direct Connection between RS-422A Ports at Both Units . . . . . . . . . . . . . . . . . .

5-2-3 Direct Connection between RS-485 Ports at Both Units . . . . . . . . . . . . . . . . . . . .

5-2-4 1:N Connection among RS-422A Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-5 1:N Connection among RS-485 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-6 Recommended Connectors, Cables and Crimp Terminals . . . . . . . . . . . . . . . . . .

5-2-7 Setting the Terminal Resistance for RS-422A/485 Communications . . . . . . . . . .

100

101

117

121

122

125

127

128

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Connecting to the Host’s RS-232C Port

Section 5-1

5-1 Connecting to the Host’s RS-232C Port

The methods for connecting the RS-422A/485 port of the NT31/NT31C and the

RS-232C port of the host are described here. There are the following methods.

The following discussion is focused on the connection method to OMRON PCs

(By using the memory link method, a connection can be made to any arbitrary

RS-232 unit). When making a connection to a host other than OMRON PCs, re-

fer to the PC Connection Manual (V042-E1-j) or NT31/631 Multi Vendor Con-

nection Manual (V060-E1-j).

• Method in which the RS-422A port of the NT31/NT31C and the RS-232C port

of the host are connected in a 1:1 connection via an RS-232C/RS-422A con-

vertor unit (page 88).

When this method is used, the cable length can be extended up to 500 m.

Host

RS-232C/RS-422A

convertor unit

RS-422A cable

(max. 500 m)

RS-232C

cable

(max. 2 m)

• Method in which the RS-485 port of the NT31/NT31C and the RS-232C port of

the host are connected in a 1:1 connection via an RS-232C/RS-422A conver-

tor unit (page 88).

When this method is used, the cable length can be extended up to 500 m.

This connection method can be used only with the NT link (1:N) method of

type RS-485.

Host

RS-232C/RS-422A

convertor unit

RS-485 cable

(max. 500 m)

RS-232C

cable

(max. 2 m)

• Method in which the RS-422A ports of multiple NT31/NT31Cs and the

RS-232C port of the host are connected in a 1:N connection via an

RS-232C/RS-422A convertor unit (page 92).

This connection method is used with the RS-422A type NT link (1:N) meth-

od.

Host

RS-232C/RS422A

convertor unit

RS-422A cable

(max. total length

500 m)

RS-232C

cable

(max. 2 m)

• Method in which the RS-485 ports of multiple NT31/NT31Cs and the RS-232C

port of the host are connected in a 1:N connection via an RS-232C/RS-422A

convertor unit (page 92).

This connection method is used with the RS-485 type NT link (1:N) method

(standard or high-speed).

Host

RS-232C/RS422A

convertor unit

RS-485 cable

(max. total length

500 m)

RS-232C

cable

(max. 2 m)

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Connecting to the Host’s RS-232C Port

Section 5-1

Note One end of the wire must always be connected to the host (PC), and there must

be no branching. Branching will cause problems such as transmission delays

and communication failures.

(At termination)

Relay terminal block

Max. 2 m

NT31

NT31C

(Not at

termination)

NT31

(Not at

termination)

NT31

NT31C

NT31

NT31C

NT31

(At

(Not at

termination)

Example of Good Connection

Examples of Bad Connections

Reference: CS1 series CPUs cannot be connected with the 1:1 connection NT link method.

Use the 1:N connection NT Link method (standard or high-speed) instead to

make the 1:1 connection. For details, refer to Using the NT link (1:N) method

(page 72) or Using the High-speed NT link (1:N) method (page 75).

5-1-1 The Type of Host and Settings

The using condition is the same as the connecting PT side RS-232C and the

host side RS-232C.

For the available type and settings of the host, refer to the pages listed below.

Method

Host link

Reference

Host Link Method (page 54)

NT link (1:1)

NT link (1:N)

NT Link (1:1) method (page 67)

Using the NT Link (1:N) Method (page 72)

High-speed NT link (1:N) Using the High-speed NT Link (1:N) Method (page 75)

Memory link Memory Link Method (page 78)

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Connecting to the Host’s RS-232C Port

Section 5-1

Settings at the

RS-232C/RS-422A

Convertor Unit

(NT-AL001)

When making a connection between RS-232C and RS-422A/485 ports using an

RS-232C/RS-422A convertor unit, set the DIP switches on the NT-AL001 as fol-

lows.

Example: the terminal resistor is active,

RS-422A, NT link (1:N).

om^Ron

NT-AL001

Built-in terminal resistor setting (DIP SW1-2)

If at the end of the RS-422A/485 cable, set this switch to ON (to

activate the built-in terminal resistor).

If not at the end of the RS-422A/485 cable, set this switch to

OFF (to inactivate the built-in terminal resistor).

2-wire type/4-wire type selection (DIP SW1-3, SW1-4)

For RS-422A, set both of these switches to OFF (4-wire type).

For RS-485, set both of these switches to ON (2-wire type).

Selection of RS-422A/485 send mode (DIP SW1-5, SW1-6)

For host link or NT link (1:1), set both of these switches to

OFF. (Always send)

For NT link (1:N), set SW1-5 to OFF and SW1-6 to ON.

(Sends when CS is H)

Note Read the manual supplied with the NT-AL001 carefully before using the unit.

5-1-2 1:1 Connection between RS-422A/485 at the PT and RS-232C at

the Host

The connection method in which the RS-422A/485 port of an NT31/NT31C and

the RS-232C port of a host are connected via a convertor unit is described here.

An RS-232C/RS-422A convertor unit (NT-AL001) is used to convert between

the RS-232C and RS-422A communication methods.

Host link unit/CPU

NT31/NT31C

Serial port B

(RS-422A/485,

25-pin type)

SYSMAC

C-series PC,

CVM1/CV-series PC, SRM1

RS-232C/RS-422A

convertor unit

(NT-AL001)

9-pin connector or

25-pin connector

RS-422A/485 cable

(max. length: 500 m)

RS-232C cable

with connectors

RS-422A terminal block

9-pin connector

Reference: When using RS-485 as a port for the NT31/NT31C, only NT link (1:N) method

(standard or high-speed) can be used.

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Connecting to the Host’s RS-232C Port

Section 5-1

Connecting an NT31/NT31C and NT-AL001 (RS-422A)

NT31/NT31C

Host

NT-AL001

RS-422A

NT31/NT31C side

Abbreviation Pin number

Shielding wire

Connector

hood

−

RS-232C/

422A/485

connector

−

NT-AL001 side

−

TRM

Pin number Abbreviation

RDB (+)

RDA

RDB

SDA

SDB

SDB (+)

RS-422A

terminal

block

−

Functional

ground

−

SDA (−)

RDA (−)

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not make the connection between the

functional ground of the NT-AL001 and the shielding.

Connecting an NT31/NT31C and NT-AL001 (RS-485)

NT31/NT31C

Host

NT-AL001

RS-485

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

connector

−

NT-AL001 side

−

TRM

Pin number Abbreviation

RDB (+)

RDA

RDB

SDA

SDB

SDB (+)

RS-422A

terminal

block

−

Functional

ground

−

SDA (−)

RDA (−)

−

Shielding wire

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not make the connection between the

functional ground of the NT-AL001 and the shielding.

Reference: When using RS-485 as a port for the NT31/NT31C, only NT link (1:N) method

(standard or high-speed) can be used.

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Connecting to the Host’s RS-232C Port

Section 5-1

Connecting an NT-AL001 and Host

NT31/NT31C

Host

NT-AL001

RS-232C

Wiring When Connecting a Host Link Unit (25-pin)

Applicable units:

C200H-LK201-V1

3G2A5-LK201-EV1

C500-LK203

3G2A6-LK201-EV1

CV500-LK201 (communication port 1)

Cables with connectors that can be used:

XW2Z-200S (9-pin ⇔ 25-pin, 2 m)

XW2Z-500S (9-pin ⇔ 25-pin, 5 m)

CVM1/CV-series host link unit (CV500-LK201) has two types of connector: a

25-pin connector (communication port 1), and a 9-pin connector (communica-

tion port 2). When using the communication port, refer to Wiring for Connections

other than Memory Link (page 90).

PC (host link unit) side

NT-AL001 side

Abbreviation Pin number

Connector

Abbreviation Pin number

−

hood

Shielding wire

Connector

hood

−

+5V

−

RS-232C

connector

RS-232C

connector

−

(9-pin type)

−

(25-pin type)

Wiring for Connections Other Than Memory Link

Applicable units:

CV500-LK201 (communication port 2)

CS1W-SCU21

CPM1-10CDR-

CPM1-20CDR-

CPM1A-10CDj-

CPM1A-30CDj-

CPM1A-20CDj-

CPM1A-40CDj-

CPM2A-30CD

CPM2A-40CD

CPM2A-60CD

CPM2C-10

CPM2C-20

CQM1-CPU21-E

CQM1-CPU41-EV1

CQM1-CPU43-EV1

CQM1H-CPU11

CQM1-CPU42-EV1

CQM1-CPU44-EV1

CQM1H-CPU21

CQM1H-CPU51

CQM1H-CPU61

CS1G-CPU42-E(V1)

CS1G-CPU44-E(V1)

CS1G-CPU43-E(V1)

CS1G-CPU45-E(V1)

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Connecting to the Host’s RS-232C Port

Section 5-1

CS1H-CPU63-E(V1)

CS1H-CPU65-E(V1)

CS1H-CPU67-E(V1)

C200HS-CPU21-E

C200HS-CPU31-E

C200HE-CPU32-E

C200HG-CPU33-E

C200HG-CPU53-E

C200HX-CPU34-E

C200HX-CPU54-E

C200HE-CPU32-ZE

C200HG-CPU33-ZE

C200HG-CPU53-ZE

C200HX-CPU34-ZE

C200HX-CPU54-ZE

C200HX-CPU65-ZE

CV500-CPU01-EV1

CV2000-CPU01-EV1

CVM1-CPU01-EV2

CVM1-CPU21-EV2

SRM1-C02-V2

CS1H-CPU64-E(V1)

CS1H-CPU66-E(V1)

C200HS-CPU23-E

C200HS-CPU33-E

C200HE-CPU42-E

C200HG-CPU43-E

C200HG-CPU63-E

C200HX-CPU44-E

C200HX-CPU64-E

C200HE-CPU42-ZE

C200HG-CPU43-ZE

C200HG-CPU63-ZE

C200HX-CPU44-ZE

C200HX-CPU64-ZE

C200HX-CPU85-ZE

CV1000-CPU01-EV1

CVM1-CPU11-EV2

Usable Cables with Attached Connectors:

• For host link and 1:1 NT Link only (+5 V power wire attached)

SJ45007-102 (9-pin to 9-pin, 0.7 m)

SSJ45007-202 (9-pin to 9-pin, 2 m)

• For host link, 1:1 NT Link, or 1:N NT Link (+5 V power supplied from PC)

XW2Z-070T-1 (9-pin to 9-pin, 0.7 m)

XW2Z-200T-1 (9-pin to 9-pin, 2 m)

SJ46006-102 (9-pin to 9-pin, 1 m)

SSJ46006-202 (9-pin to 9-pin, 2 m)

CVM1/CV-series CPUs whose model names do not have the suffix -EVj can-

not be connected by any connection method.

NT-AL001 side

PC side

Pin number

Abbreviation Pin number

Abbreviation

Connector

hood

Connector

−

hood

−

+5V

−

(+5V)

−

RS-232C

connector

RS-232C

connector

−

Shielding wire

(9-pin type)

When there is no +5 V output at the PC side

When there is +5 V output at the PC side

When using host link or NT link (1:1)

When using NT link (1:N)

• When using the host link or NT link (1:1) method, short the RS and CS termi-

nals at the PC side with each other (leave the RS and CS terminals at the NT-

AL001 side open).

• When using the NT link (1:N), cross-connect the RS and CS terminals at the

NT-AL001 and PC sides.

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Connecting to the Host’s RS-232C Port

Section 5-1

If there is +5 V output at the PC side, no external power supply is required for

the NT-AL001.

Wiring for a Memory Link Connection

Prepare the adapter cable while referring to the diagram shown below.

Host side

Abbreviation

NT-AL001 side

Abbreviation Pin number

Connector

hood

Connector

hood

−

+5V

−

RS-232C

connector

RS-232C

connector

(+5V)

−

(9-pin type)

Shielding wire

No +5 V output is at the host side

A +5 V output is present at the host side

Since it is necessary to input a voltage of +5 V to the number 6 pin of NT-AL001,

supplying a voltage of 5 V from the host or an external voltage supply for NT-

AL001 is required.

5-1-3 1:N Connection between RS-422A/485 at the PT and RS-232C at

the Host

The connection method in which the RS-422A/485 ports of multiple

NT31/NT31Cs are connected to the RS-232C port of one host in a 1:N connec-

tion is described here.

An RS-232C/RS-422A convertor unit (NT-AL001) is used to convert between

the RS-232C and RS-422A/485 communication methods.

Host link unit/CPU

NT31/NT31C

CS1G/H

C200HX/HG/HE(-Z)E

Serial port B

(RS-422A/485,

25-pin type)

RS-232C/RS-422A

convertor unit

(NT-AL001)

9-pin connector

25-pin connector

Relay terminal block

Max. 2 m

RS-232C cable with

connectors

RS-422A terminal 9-pin connector

block

RS-422A/485 cable

(max. total length: 500 m)

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Connecting to the Host’s RS-232C Port

Section 5-1

Connecting an

NT31/NT31C and

NT-AL001 (RS-422A)

The relay terminal board is not included in the figure below. Insert a relay termi-

nal board so as to achieve the wiring configuration indicated below.

NT31/NT31C

Host

NT-AL001

RS-422A

NT31/NT31C side

Abbreviation Pin number

Connector

Shielding wire

hood

−

RS-232C/

422A/485

connector

−

NT-AL001 side

−

TRM

Pin number Abbreviation

RDB (+)

RDA

RDB

SDA

SDB

RS-422A

terminal

block

RDB (+)

−

Functional

ground

−

SDA (−)

RDA (−)

−

RSB (+)

RSA (−)

−

(25-pin type)

Next PT

In order to avoid an FG ground loop, do not make the connections between the

functional ground of the NT-AL001 and the shielding.

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Connecting to the Host’s RS-232C Port

Section 5-1

Connecting an

NT31/NT31C and

NT-AL001 (RS-485)

The relay terminal board is not included in the figure below. Insert a relay termi-

nal board so as to achieve the wiring configuration indicated below.

NT31/NT31C

Host

NT-AL001

RS-485

NT31/NT31C side

Abbreviation Pin number

Shielding wire

Connector

hood

−

RS-232C/

422A/485

connector

−

NT-AL001 side

−

TRM

Pin number Abbreviation

RDB (+)

RDA

RDB

SDA

SDB

RS-422A

terminal

block

SDB (+)

−

Functional

ground

−

SDA (−)

RDA (−)

−

RSB (+)

RSA (−)

−

(25-pin type)

Next PT

In order to avoid an FG ground loop, do not make the connections between the

functional ground of the NT-AL001 and the shielding.

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Connecting to the Host’s RS-232C Port

Section 5-1

Connection between

NT31/NT31C Units

(RS-422A)

The relay terminal board is not included in the figure below. Insert a relay termi-

nal board so as to achieve the wiring configuration indicated below.

NT31/NT31C

Host

NT-AL001

RS-422A

NT31/NT31C side

Abbreviation Pin number

Connector

Pin number Abbreviation

Shielding wire

Connector

hood

−

RS-232C/

422A/485

connector

RS-232C/

422A/485

connector

−

TRM

RDB (+)

−

RDB (+)

−

SDA (−)

RDA (−)

−

SDA (−)

RDA (−)

−

RSB (+)

RSA (−)

−

RSB (+)

RSA (−)

−

(25-pin type)

Make the connection between pin numbers 9 and 10 at the terminal NT31/NT31C

(marked ^:in the figure above) only.

In order to avoid an FG ground loop, make the connection between the connec-

tor hood and the shielding at one side only.

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Connecting to the Host’s RS-232C Port

Section 5-1

Connection between

NT31/NT31C Units

(RS-485)

The relay terminal board is not included in the figure below. Insert a relay termi-

nal board so as to achieve the wiring configuration indicated below.

NT31/NT31C

Host

RS-485

NT31/NT31C side

Abbreviation Pin number

Pin number Abbreviation

Shielding wire

Connector

hood

Connector

hood

−

RS-232C/

422A/485

connector

RS-232C/

422A/485

connector

−

TRM

RDB (+)

−

SDB (+)

−

SDA (−)

RDA (−)

−

SDA (−)

RDA (−)

−

RSB (+)

RSA (−)

−

RSB (+)

RSA (−)

−

(25-pin type)

Make the connection pin numbers 9 and 10 at the terminal NT31/NT31C (marked

)

In order to avoid an FG ground loop, make the connection between the connec-

tor hood and the shielding at the one side only.

Connecting an NT-AL001 and Host

NT31/NT31C

Host

NT-AL001

RS-232C

Wiring when connecting a CS1-series CS1G/H Serial Communications Board,

CQM1H Serial Communications Board, or C-series C200HX/HG/HE(-Z)E Com-

munications Board.

Applicable PCs:

CS1G-CPU42-E(V1)

CS1G-CPU44-E(V1)

CS1H-CPU63-E(V1)

CS1H-CPU65-E(V1)

CS1G-CPU43-E(V1)

CS1G-CPU45-E(V1)

CS1H-CPU64-E(V1)

CS1H-CPU66-E(V1)

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Connecting to the Host’s RS-232C Port

Section 5-1

CS1H-CPU67-E(V1)

CQM1H-CPU51

CQM1H-CPU61

C200HE-CPU32-(Z)E

C200HG-CPU33-(Z)E

C200HG-CPU53-(Z)E

C200HX-CPU34-(Z)E

C200HX-CPU54-(Z)E

C200HX-CPU65-ZE

C200HE-CPU42-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

C200HX-CPU85-ZE

Usable Cables with Attached Connectors:

• For host link, 1:1 NT Link, or 1:N NT Link (+5 V power supplied from PC)

XW2Z-070T-1 (9-pin to 9-pin, 0.7 m)

XW2Z-200T-1 (9-pin to 9-pin, 2 m)

SJ46006-102 (9-pin to 9-pin, 1 m)

SSJ46006-202 (9-pin to 9-pin, 2 m)

NT-AL001 side

PC side

Abbreviation Pin number

Pin number Abbreviation

Shielding wire

Connector

hood

−

+5V

−

+5V

−

RS-232C

connector

RS-232C

connector

−

(9-pin type)

Since the CS1G/H, CQM1H, and C200HX/HG/HE(-Z)E have a +5 V output,

no external power supply is required for the NT-AL001.

5-1-4 Recommended Connectors, Cables, and Crimp Terminals

Connectors and Cables Recommended for RS-232C

When making an RS-232C connecting cable, as far as possible use the recom-

mended parts indicated in the table below. Some units come supplied with one

connector and connector hood.

Check the required parts and prepare them in advance.

Name

Model

Remarks

Delivered with

CS1-series CS1G/H

C-series CQM1, C200HS,

C200HX/HG/HE(-Z)E

9-pin type

XM2A-0901

Made by OMRON

CVM1/CV-series CPUs

CV500-LK201

Connector

C500-LK203

25-pin type

3G2A5-LK201-EV1

C200H-LK201-V1

XM2A-2501

DB-25P

Made by OMRON

25-pin type

3G2A5-LK201-EV1

3G2A6-LK201-EV1

Made by JAE

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Connecting to the Host’s RS-232C Port

Section 5-1

Name

Model

XM2S-0911

XM2S-0913

Remarks

9-pin type

Delivered with

C-series CQM1, C200HS,

C200HX/HG/HE(-Z)E

CVM1/CV-series CPUs

CV500-LK201

Made by OMRON

Made by OMRON 9-pin

---

Connector

hood

XM2S-0911-E Made by OMRON 9-pin

CS1 series CS1G/CS1H

C500-LK203

25-pin type

XM2S-2511

3G2A5-LK201-EV1

C200H-LK201-V1

Made by OMRON

25-pin type

DB-C2-J9

3G2A5-LK201-EV1

3G2A6-LK201-EV1

Made by JAE

AWG28 5P

Multi-core shielded cable

Made by Fujikura, Ltd.

---

IFVV-SB

Cable

Multi-core shielded cable

Made by Hitachi, Ltd.

CO-MA-VV-SB

5P 28AWG

Cables with Connectors Made by OMRON

When connecting an NT-AL001 and a PC, use the OMRON cables with connec-

tors indicated in the table below.

Model

Cable Length

Connector Specification

9-pin ⇔ 25-pin

XW2Z-200S

XW2Z-500S

XW2Z-200T

XW2Z-500T

2 m

5 m

2 m

5 m

1 m

Host link, NT link (1:1)

9-pin ⇔ 9-pin

Host link, NT link (1:1)

9-pin ⇔ 9-pin

SJ45007-102

SJ45007-202

XW2Z-070T-1

XW2Z-200T-1

SJ46006-102

SJ46006-202

Host link, NT link (1:1)

2 m

0.7 m

2 m

+5 V power supply wire attached

(Use when the PC does not have a +5 V output.)

9-pin ⇔ 9-pin

Host link, NT link (1:1), NT link (1:N)

+5 V power supplied from PC

(Use when the PC has a +5 V output.)

1 m

9-pin ⇔ 9-pin

Host link, NT link (1:1), NT link (1:N)

2 m

+5 V power supplied from PC

(Use when the PC has a +5 V output.)

Note The maximum tensile load of the recommended cable is 30 N. Do not exceed

this load.

• After connecting a connecting cable, always tighten the connector screws.

• Recommended connectors, cables and crimp terminals for RS-422A/485

When making an RS-422A/485 connecting cable, as far as possible use the

recommended parts indicated in the table below. Some units come supplied

with one connector and connector hood.

Check the required parts and prepare them in advance.

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Connecting to the Host’s RS-232C Port

Section 5-1

Name

Model

Maker

Remarks

Delivered with the following

units:

25-pin type

XM2A-2501

Made by OMRON

C500-LK203

Connector

Delivered with the following

units:

25-pin type

DB-25P F-N

XM2S-2511

3G2A6-LK201-EV1

3G2A5-LK201-EV1

Made by JAE

Delivered with the following

units:

25-pin type

Made by OMRON

C500-LK203

Connector

hood

Delivered with the following

units:

25-pin type

DB-C2-J9

3G2A6-LK201-EV1

3G2A5-LK201-EV1

Made by JAE

Tachii Electric

Wire Co., Ltd.

Cable

TKVVBS4P-03

1.25-N3A

(fork type)

Japan Solderless

Terminal MFG

Recommended cable size:

AWG22 to 18

(0.3 to 0.75 mm )

Crimp

terminals

Y1.25-3.5L

(fork type)

Molex Inc.

The terminal screws of the NT-AL001 are M3 specification. When wiring,

use crimp terminals for M3 use. Tighten terminal screws with a tightening

torque of 0.5 N@m.

Note Always use crimp terminals for wiring.

Examples of applicable terminals

Round type

Fork type

6.2 mm or less

5-1-5 Setting the Terminal Resistance for RS-422A/485 Communications

The serial port B connector of the NT31/NT31C has a terminal resistance setting

terminal (TRM).

In RS-422A/485 communications, a terminal resistor must be set at the device at

the end of the communication cable, but not at any other device.

The NT31/NT31C has a built-in terminal resistor, and whether or not the terminal

resistance is applied is set by the wiring at the terminal resistance setting termi-

nals (pins No. 9 and 10 of serial port B). The terminal resistance is 120 Ω. When

carrying out RS-422A/485 communications using serial port B, short between

terminals No. 9 and 10 at the NT31/NT31C at the end of the RS-422A/485 cable.

Leave terminals No. 9 and 10 open at NT31/NT31C units other than the one at

the end of the cable.

When not using RS-422A/485 communications, the terminal resistance setting

is ineffective.

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

In order to set the terminal resistance, wiring work is required at the cable’s con-

nector: carry out the wiring correctly by referring to APPENDIX E Making the

Cable, page 267.

Abbreviation Pin number

Connector

hood

Terminal resistor setting

TRM

RDB (+)

SDB (+)

Pin Nos. 9 and 10

Function

Terminal resistance is applied.

Shorted

Short only at the NT31/NT31C connected to the end of an

RS-422A/485 cable.

Terminal resistance is not applied.

Open

Leave the terminals open when connecting an NT31/NT31C

anywhere other than at the end of the RS-422A/485 cable.

Note Before connecting or disconnecting cables between devices, make sure that the

power supply to all of the connected devices (NT31/NT31C, PC, etc.) is OFF.

Reference: S The internal circuit of the NT31/NT31C is shown below.

10 (RDB)

−

16 (RDA)

Making a connection here inserts a terminator between

+ (RDB) and − (RDA).

Terminal resistor (120 Ω)

9 (TRM)

S For details on setting the terminal resistance of NT-AL001-E, refer to Settings

at the RS-232C/RS-422A Convertor Unit (NT-AL001-E) (page 88).

5-2 Connecting to the Host’s RS-422A/485 Port

The methods for connecting the RS-422A/485 port of the NT31/NT31C and the

RS-422A/485 port of the host are described here. There are the following meth-

ods.

The following discussion is focused on the connection method to OMRON PCs

(By using the memory link method, a connection can be made to any arbitrary

RS-422 unit). When making a connection to a host other than OMRON PCs, re-

fer to the PC Connection Manual (V042-E1-j) or Multi Vendor Connection

Manual (V060-E1-j).

• Method in which the RS-422A ports of the NT31/NT31C and host are con-

nected directly by an RS-422A cable (page 117).

When this method is used, the cable length can be extended up to 500 m.

Host

RS-422A cable

(max. 500 m)

• Method in which the RS-485 ports of the NT31/NT31C and host are connected

by an RS-485 cable (page 121).

When this method is used, the cable length can be extended up to 500 m.

100

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

This connection method can be used only with the NT link (1:N) method

(standard or high-speed) of type RS-485.

Host

RS-485 cable

(max. 500 m)

• Method in which the RS-422A ports of multiple NT31/NT31Cs and the

RS-422A port of the host are connected in a 1:N connection (page 122).

This connection method is used with the RS-422A type NT link (1:N) method

(standard or high-speed).

Host

RS-422A cable

(max. total length 500 m)

• Method in which the RS-485 ports of multiple NT31/NT31Cs and the RS-485

port of the host are connected in a 1:N connection (page 125).

This connection method is used with the RS-485 type NT link (1:N) method

(standard or high-speed).

Host

RS-485 cable

(max. total length 500 m)

Note One end of the wire must always be connected to the host (PC), and there must

be no branching. Branching will cause problems such as transmission delays

and communication failures.

(At termination)

Relay terminal block

Max. 2 m

NT31

NT31C

(Not at

termination)

NT31

(Not at

termination)

NT31

NT31C

NT31

NT31C

NT31

(At

(Not at

termination)

Example of Good Connection

Examples of Bad Connections

Reference: CS1 series CPUs cannot be connected with the 1:1 connection NT link method.

Use the 1:N connection NT link method (standard or high-speed) instead to

make the 1:1 connection. For details, refer to Using the NT link (1:N) Method

(page 113) or Using the High-speed NT link (1:N) Method (page 115).

5-2-1 Host Types and Settings

The types of host that have an RS-422A port and can be connected to the

RS-422A/485 port of the NT31/NT31C, and the settings to be made at the host,

are described here.

When Using the Host Link Method

Compatible Host Units

Some models and series of OMRON PCs have the RS-422A/485 type host link

101

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

function built in. With the CS1-series and CQM1H, the host link method can be

used by installing a serial communication board. In addition, some C200HX/HG/

HE(-Z)E devices have an integral CPU that can be connected in the host link

method by installing a communication board.

With the CPM2A and CPM2C, an RS-422A type of 1:1 NT Link can be created

through a CPM1-CIF11 RS-422A Adapter.

Check the model and series of the PC and the type of the installed Board or Unit

before making a connection.

The host units featuring the RS-422A/485 type host link function and can be con-

nected to the RS-422A/485 port of the NT31/NT31C are indicated in the table

below.

Units with Built-in Host Link Function

CPUs Connectable with

Host Link Units or Expansion

Communication Board

Connectable

PC Series

Host Link Unit /

CPU

Communication Board

CS1G-CPU42/43/44/45-EV1

CS1H-CPU63/64/65/66/67-EV1

CS1G

CS1H

CS1 series

CS1W-SCB41-E

C1000H-CPU01-EV1

C2000H-CPU01-EV1

C1000H

C2000H

3G2A6-LK202-EV1

C200HS-CPU01/03/21/23/31/33-E

C200HS-CPU01/21-EC

C200HE-CPU11/32/42-E

C200HS

C200HE

C200HE-ZE

C200HG

C200HG-ZE

C200HX

C200HE-CPU11/32/42-ZE

C200H-LK202-V1

C200HG-CPU33/43/53/63-E

C200HG-CPU33/43/53/63-ZE

C200HX-CPU34/44/54/64-E

C200HX-CPU34/44/54/64/65/85-ZE

C200HX-ZE

C200HE-CPU32/42-E

C200HE-CPU32/42-ZE

C200HE

C200HE-ZE

C200HG-CPU33/43/53/63-E

C200HG-CPU33/43/53/63-ZE

C200HG

C200HG-ZE

C200HW-COM03/06-EV1

C200HX-CPU34/44/54/64-E

C200HX-CPU34/44/54/64/65/85-ZE C200HX-ZE

C200HX

C series

C1000H-CPU01-EV1

C2000H-CPU01-EV1

C1000H

C2000H

3G2A5-LK201-EV1

C500-LK203

C1000H-CPU01-EV1

C2000H-CPU01-EV1

C1000H

C2000H

CPM1-10/20/30CDR-

+CPM1-CIF11

CPM1

CPM1A-10/20/30/40CDj-

+CPM1-CIF11

CPM2A-30/40/60CDj-

+CPM1-CIF11

CPM2A

(Peripheral port connection)

(*1)

CPM2C-10/20 j-

CPM2C

CQM1H

CV500

CQM1H-SCB41

CV500-LK201

CQM1H-CPU51/61

CV500-CPU01-EV1

CV1000-CPU01-EV1

CV2000-CPU01-EV1

CV500-CPU01-EV1

CV series

CV1000-CPU01-EV1

CV2000-CPU01-EV1

CV1000

CV2000

(*2)

CVM1-CPU01-EV2

CVM1-CPU11-EV2

CVM1-CPU21-EV2

CVM1-CPU01-EV2

CVM1-CPU11-EV2

CVM1-CPU21-EV2

CVM1 se-

ries

CV500-LK201

CVM1

(*2)

SRM1

SRM1-C02-V1+CPM1-CIF11

SRM1

*1: Use a CPM2C-CN111 or CS1W-CN114/118 Connecting Cable, CPM1-CIF01 RS-232C Adapter, or CPM1-CIF11

RS-422A Adapter to connect.

*2: CPUs of CVM1/CV-series PCs without the suffix -EVj cannot be connected.

The host link method cannot be used when an NT31/NT31C is connected using

RS-485. To use the host link method, connect by RS-422A.

102

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Settings at the Host

When using the RS-422A type host link method, the settings shown below must

be made at the host (depending on the unit, some of these settings may not be

necessary, or settings not shown here may be necessary).

Item

Setting at Host

I/O port

RS-422A

(*1)

Communications speed

Transfer code

Parity

Set the same speed as for the NT31/NT31C.

ASCII, 7 data bits, 2 stop bits

Even

(*2)

1-to-1/1-to-N

Instruction level

Unit #

1-to-N

Level 1, 2, 3

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

Comm. Speed memory switch at the NT31/NT31C. For details, refer to Setting

the Host Link Method (page 158).

*2 The 1-to-N setting enables BCC (Block Check Character). It is not actually

possible to connect more than one NT31/NT31C in a single host link.

The setting methods for each type of unit are described in the following.

Connecting to a C Series Host Link Unit

C200H/C200HS/C200HE(-Z)E/C200HG(-Z)E/C200HX(-Z)E

Backplane mounting type: C200H-LK201-V1

Setting the Front Switches

Set each switch with a flat blade screwdriver so that the values or symbols in the

setting value window agree with the following:

LK201

XMT

RUN

RCV

ERROR

@ Unit # (SW1, SW2)

Set these switches to 0.

SW1

SW3

SW2

@ Instruction level, parity, and transfer code (SW4)

SW4

Set this switch to 2.

@ Communications speed (SW3)

Set this switch to 5 to select 9600 bps.

Set this switch to 6 to select 19200 bps.

Setting the Rear Switches

@ Terminator setting (selector switch)

Set this switch to ON.

Terminator

1-to-1 (ON)

1-to-N (OFF)

OFF

@ 1-to-1/1-to-N protocol selection (selector switch)

Set this switch to 1-to-N (OFF).

103

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

C1000H/C2000H rack-mounting type: 3G2A5-LK201-EV1

Setting the Front Switches

Mode

selector

Host Local

@ Mode selector (key switch)

Set this to Host link.

Setting the Rear Switches

@ I/O port selection (selector switch)

Set this to RS-422A.

I/O port

RS-422A

RS-232C

SW1

@ Unit # (DIP SW1)

Synchronization

Set SW1-1 to SW1-5 to OFF (0).

Internal

External

@ Synchronization (selector switch)

Set this to Internal.

Terminator

OFF

SW2

@ Communications speed

(DIP SW2-1 to SW2-4)

CTS

Set these switches to 0010 to select

19200 bps.

External

Set these switches to 1010 to select

9600 bps.

(0: OFF 1: ON)

@ 1-to-1/1-to-N selection (DIP SW2-6)

Set SW2-6 to OFF (0) (1-to-N).

@ Instruction level (DIP SW2-7, SW2-8)

Set these switches to ON (1).

(Levels 1, 2, and 3 are enabled.)

@ CTS selection (selector switch)

Set this always to 0V (ON).

@ Terminator setting (selector switch)

Set this switch to ON.

104

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

C1000H/C2000H rack-mounting type: C500-LK203

Setting the Rear Switches

@ I/O port selection (selector switch)

Set this to RS-422A.

5V supply

OFF

SW1

@ Unit #, parity, and transfer code

(DIP SW1-1 to SW1-7)

I/O port

RS-422A

RS-232C

Set SW1-1 to SW1-7 to OFF (0).

Synchronization

Internal

External

@ Synchronization (selector switch)

Set this to Internal.

Terminator

OFF

SW2

@ Communications speed

(DIP SW2-1 to SW2-4)

CTS

Set these switches to 0010 to select

19,200 bps.

External

Set these switches to 1010 to select

9,600 bps.

(0: OFF 1: ON)

@ 1-to-1/1-to-N selection (DIP SW2-6)

Set SW2-6 to OFF (0) (1-to-N).

@ Instruction level (DIP SW2-7, SW2-8)

Set these switches to ON (1).

(Levels 1, 2, and 3 are enabled.)

@ CTS selection (selector switch)

Set this always to 0V (ON).

@ Terminator setting (selector switch)

Set this switch to ON.

C200H/C1000H/C2000H CPU mounting type: 3G2A6-LK202-EV1

Setting the Rear Switches

@ Unit #, parity, and transfer code

(DIP SW1-1 to SW1-5)

Set SW1-1 to SW1-5 to OFF (0).

* Parity is fixed at Even Parity. Transfer code is

fixed at ASCII 7 data bits and 2 stop bits.

@ Communications speed (DIP SW2-1 to SW2-4)

Set these switches to 0010 to select 19,200 bps.

Set these switches to 1010 to select 9,600 bps.

(0: OFF 1: ON)

SW1

@ 1-to-1/1-to-N selection (DIP SW2-6)

SW2

Set SW2-6 to OFF (0) (1-to-N).

@ Instruction level (DIP SW2-7, SW2-8)

Set these switches to ON (1).

(Levels 1, 2, and 3 are enabled.)

SW3

@ Terminator setting (DIP SW3-1 to SW3-6)

Set SW3-1, SW3-3, and SW3-5 to ON (1).

Set SW3-2, SW3-4, and SW3-6 to OFF (0).

(Set terminator ON.)

105

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Connecting to a CVM1/CV Series Host Link Unit

CVM1/CV series rack-mounting type: CV500-LK201

A CVM1/CV series host link unit (CV500-LK201) has two connectors (commu-

nication ports 1 and 2). To use the RS-422A type host link method, set commu-

nication port 2 to RS-422A.

Communication port 2 is a 9-pin connector which allows selection of the

RS-232C or RS-422A method. When this port is used with the RS-422A method,

the I/O port selector switch on the front of the unit must be set to RS-422A (the

lower position).

CPU Bus Unit Settings

When connecting to a CVM1/CV series host link unit, set the following commu-

nication conditions for the CPU bus unit settings.

Item

Communications speed

Transfer code

Parity

Setting at Host

Set the same speed as for the NT31/NT31C.

ASCII, 7 data bits, 2 stop bits

Even

(*1)

(*2)

1-to-1/1-to-N

1-to-N

Instruction level

Level 1, 2, 3

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

Comm. Speed memory switch at the NT31/NT31C. For details, refer to Setting

the Host Link Method (page 158).

*1 The 1-to-N setting enables BCC (Block Check Character). It is not actually

possible to connect more than one NT31/NT31C in a single host link.

Set the CPU bus unit settings directly from a Programming Device (e.g. SYS-

MAC support software).

For details on the CPU bus unit settings, refer to the SYSMAC CVM1/CV-series

Host Link Unit Operation Manual (W205-E1-j).

106

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Setting the Front Switches

@ Unit # (SW3, SW4)

Set these switches to 0.

Communications port 1

(RS-232C)

Communications port 2

(RS-232C/RS-422A)

I/O port selector switch

RS-232C

@ I/O port selection (selector switch)

Set this to RS-422A.

RS-422A

@ Communication condition setting (DIP SW1)

Set this switch to OFF.

Communication is executed in accordance with the

CPU bus unit system settings made at the PC. The

initial values for the system settings are as follows.

- Communications speed: 9,600 bps

- Parity: Even

- Xon/Xoff control: Not executed

- Communication method: Full duplex

- Stop bits: 2 stop bits

- Data length: 7 bits

@ Terminator setting (selector switch)

Set this to ON.

Connecting to a CPU Unit

CVM1/CV-series (-EVj) CPUs

• CV500-CPU01-EV1/CV1000-CPU01-EV1/CV2000-CPU01-EV1

• CVM1-CPU01-EV2/CVM1-CPU11-EV2/CVM1-CPU21-EV2

PC Setup

When connecting to a CVM1/CV series CPU, set the following communication

conditions for the PC Setup.

Item

Communications speed

Stop bit

Setting at Host

(*1)

Set the same speed as for the NT31/NT31C.

2 stop bits

Even

Parity

Data length

Unit #

ASCII 7 bits

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

Comm. Speed memory switch at the NT31/NT31C. For details, refer to Setting

the Host Link Method (page 158).

Either set PC Setup directly from a Programming Device (e.g. SYSMAC support

software), or transmit the PC Setup made at a Programming Device to the CPU.

For details on the PC Setup, refer to the SYSMAC CVM1/CV500/CV1000/

CV2000 Operation Manual: Ladder Diagrams (W202-E1-j).

107

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Setting the Front Switches

@ Host link communication method

selection (selector switch)

Set this to RS-422A.

@ Communication type setting (DIP SW3)

Set SW3 to OFF.

(for host link communication)

@ Host link default value settings

(DIP SW4)

To effect the existing DIP switch

settings, set SW4 to ON.

I/O port selector switch

RS-232C

To effect the values set in the PC Setup,

set SW4 to OFF.

RS-422A

Note

For CPUs manufactured before or

during June 1995 (lot No.

)

existing DIP switch settings differ from

the PC Setup default values as follows.

- Existing DIP switch settings:

2,400 bps, 1 stop bit, even parity, 7 bit

data length

- PC Setup default values:

9,600 bps, 2 stop bits, even parity, 7

bit data length

For CPUs manufactured from July 1995

onward (lot No.

)

values in the DIP switch settings also

are 9600 bps and 2 stop bits.

@ Terminator setting (DIP SW6)

Set this switch to ON.

(Set terminator ON.)

C200HX/HG/HE(-Z)E, CPM1, CPM2A, CPM2C, CQM1H, or SRM1

The connection method depends upon the model of PC being used, as shown in

the following table.

PC model

Connection method

C200HX/HG/HE(-Z)E • Connect to the RS-422A port (port A) on a Communications

Board.

CQM1H

• Connect to the RS-422A port (port 2) on a Serial Commu-

nications Board.

CPM1

• Connect to the peripheral port through a CPM1-CIF11

RS-422A Adapter.

CPM2A, SRM1

CPM2C

• Connect to the peripheral port through a CPM1-CIF11

RS-422A Adapter.

• Connect to the peripheral port (on a CPM2C-CN111 or

CS1W-CN114 Connecting Cable) through a CPM1-CIF11

RS-422A Adapter.

(The CPM2C-CN111 splits the Unit’s Communication Port

into a RS-232C port and a peripheral port.)

Reference: S There are no Communication Boards for the C200HX/HG/HE(-Z)E in which

port B is the RS-422A port.

S There are no Serial Communication Boards for the CQM1H in which port 1 is

the RS-422A port.

PC Setup Area Settings

When connecting to a C200HX/HG/HE(-Z)E or CPM1, CPM2A, CPM2C,

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

CQM1H CPUs or SRM1, set the following communication conditions for the PC

Setup area.

Item

Setting at Host

I/O port

RS-422A

Communication mode

Communications speed

Stop bit

Host link mode

(*1)

Set the same speed as for the NT31/NT31C.

2 stop bits

Even

Parity

Data length

ASCII 7 bits

Unit #

*1 Set the host link communications speed at 9600 bps or 19200 bps with the

Comm. Speed at the NT31/NT31C. For details, refer to Setting the Host Link

Method (page 158).

Set the PC Setup area settings directly from a Programming Device (e.g. CX-

Programmer).

For details on operations relating to the PC Setup area, refer to the manual for

the PC which is used.

The PC Setup area word numbers and settings to be made depending on the

unit to which the connection is made are shown below.

When using port A of the communication board of C200HX/HG/HE(-Z)E

Word # Writing Value

Settings

DM6555 0001

Host link mode, no CTS control

Communication conditions set by the contents of DM

DM6556 0303

0304

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6558 0000

Unit # 00

When using a CPM1, CPM2A, CPM2C, SRM1

Word # Writing Value

Settings

DM6650 0001

DM6651 0303

0304

Host link mode, no CTS control

Communication conditions set by the contents of DM

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6653 0000

When using a CQM1H

Unit # 00

Word # Writing Value

Settings

DM6550 0001

Host link mode, no CTS control

Communication conditions set by the contents of DM

DM6551 0303

0304

Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6553 0000

Unit # 00

109

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Connecting to a CPM2C

The CPM2C PCs do not have the same kind of port connectors found on

CS1-series PCs. The CPM2C’s communication port handles both RS-232C and

peripheral port connections which are divided internally. Therefore, when using

the CPM2C, it is necessary to select RS-232C or peripheral port connections,

according to the kind of cable and port (on the cable) used, as shown in the fol-

lowing table. Refer to the CPM2C Operation Manual for more details.

Peripheral port

CPM2C-CN111

CPM2C

CS1W-CN114

Peripheral port

RS-232C port

(D-Sub 9-pin, female)

Setting Switches on a C200HX/HG/HE(-Z)E Communications Board

Set the switches on a C200HX/HG/HE(-Z)E communication board as follows.

Switch 1:

Switch 2 :

Set to 4 (4-wire type, for RS-422A)

Set to ON for terminator ON (termination resistance applied)

Setting Switches on a CQM1H Serial Communications Board

Set the switches on a CQM1H Serial Communications Board as follows.

Wire selection (WIRE): Set to 4 (4-wire type, for RS-422A)

Terminator (TERM):

Set to ON for termination ON.

Serial Communications Board

(Inner Board slot 1)

Terminator Switch (TERM)

Set to ON (right side).

Wire Selection Switch (WIRE)

Set to 4 (right side).

Setting the Switches on an RS-422A Adapter

CPM1-

CIF11

CPM1

Set the terminator selector switch to ON (upper position).

Connecting to a CS1 Series Serial Communications Board

Serial Communications Board with RS-422A/485 port equipped for CS1 series

CPU Type :

CS1W-SCB41 (The port 2 is RS-422A/485 port.)

Allocation DM Area Settings for CPU

Settings are written from the Programming Device (a Programming Console or

CX-Programmer) directly into the allocation DM area (system setting area) of

the CPU. After the settings are written, they become effective by turning the

power ON, restarting the unit, restarting the communication port, or executing

the STUP command.

In the following, the channel numbers of the allocation DM area and the settings

are shown.

110

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Allocation DM

area (CH)

Writing Value

Settings

Port 2

DM32010

8000

Host link mode, 2 stop bits, data length 7 bits,

even parity,

DM32011

0000

0007

0000

Communication speed

Transmit delay time

No CTS control

9600 bps.

19200 bps.

DM32012

DM32016

0 ms.

Unit No.0 for host link

Using the NT Link (1:1) Method

Compatible Host Units

Some models and series of OMRON PCs have the RS-422A type NT link (1:1)

function built in.

• The C200HX/HG/HE(-Z)E CPUs can be connected by the RS-422A type NT

link (1:1) method by installing a Communications Board.

• The CQM1H CPUs can be connected by the RS-422A type NT link (1:1) meth-

od by installing a Serial Communications Board.

Check the model and series of the PC against the type of CPU before making the

connections.

The host units that can be connected to the RS-422A port of the NT31/NT31C by

the RS-422A type NT link (1:1) method are indicated in the table below.

CPUs with Built-in RS-422A type NT

PC Series

Model Name

C200HE (-Z)E

Link (1:1) Function

(*1)

C200HE-CPU32-(Z)E

(*1)

C200HE-CPU42-(Z)E

C200HG-CPU33-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU53-(Z)E

C200HG-CPU63-(Z)E

(*1)

C200HG (-Z)E

C200HX (-Z)E

(*1)

C series

C200HX-CPU34-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU54-(Z)E

C200HX-CPU64-(Z)E

(*1)

C200HX-CPU65-ZE

C200HX-CPU85-ZE

(*1)

CQM1H-CPU51/61

CV500-CPU01-EV1

CQM1H

CV500

CV series

CV1000-CPU01-EV1

CV2000-CPU01-EV1

CV1000

CV2000

(*2)

CVM1-CPU01-EV2

CVM1-CPU11-EV2

CVM1-CPU21-EV2

CVM1

series

CVM1

(*2)

*1 One of the following communication boards is required:

C200HW-COM03-EV1 or C200HW-COM06-EV1.

*1 A CQM1H-SCB41 Serial Communication Board is required.

*1 CPUs of CVM1/CV series PCs without the suffix -EVj cannot be connected.

The NT link (1:1) method cannot be used using RS-485. To use the NT link (1:1)

method, connect by RS-422A.

NT link connection using RS-422A/485 is not possible with CPM1.

Settings at the Host

The setting methods for each type of unit are described in the following.

111

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

• Connecting to a CVM1/CV-series (-EVj) CPUs

• CV500-CPU01-EV1/CV1000-CPU01-EV1/CV2000-CPU01-EV1

• CVM1-CPU01-EV2/CVM1-CPU11-EV2/CVM1-CPU21-EV2

PC Setup

When connecting to the CVM1/CV series CPU by the NT link (1:1) method, no

particular settings are required at the PC Setup.

Setting the Front Switches

@ Host link communication method selection

(selector switch)

Set this to RS-422A.

@ Communication type setting (DIP SW3)

I/O port selector switch

Set this switch to ON.

RS-232C

(for communication by NT link)

RS-422A

@ Terminator setting (DIP SW6)

Set this switch to ON.

(Set terminator ON.)

Connecting to a C-series C200HX/HG/HE(-Z)E or CQM1H

PC Setup Area Settings

Write the PC Setup area (data memory) settings directly from a Programming

Device (e.g. CX-Programmer) in accordance with the host model.

Host Model

Word # Writing Value

Setting

Port A of C200HX/HG/HE(-Z)E

DM6555

DM6550

4000

Use NT link (1:1)

Port 2 of CQM1H

*1 RS-422A port of the communication board

*1 RS-422A port of the Serial Communications Board

For details on operations relating to the PC Setup area, refer to the manual for

the PC you are using.

Setting the DIP Switches on a C200HX/HG/HE(-Z)E Communication Board

Set the switches on a C200HX/HG/HE(-Z)E communication board as follows.

Switch 1: Set to 4 (4-wire type, for RS-422A)

Switch 2 : Set to ON for terminator ON (termination resistance applied)

Setting Switches on a CQM1H Serial Communications Board

Set the switches on a CQM1H Serial Communications Board as follows.

Wire selection (WIRE): Set to 4 (4-wire type, for RS-422A)

112

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Terminator (TERM):

Set to ON for termination ON.

Serial Communications Board

(Inner Board slot 1)

Terminator Switch (TERM)

Set to ON (right side).

Wire Selection Switch (WIRE)

Set to 4 (right side).

Using the NT Link (1:N) Method

Compatible Host Units

The OMRON PCs that can be connected using the RS-422A/485 type NT link

(1:N) method are the CS1G/H, C200HX/HG/HE(-Z)E, and CQM1H models only.

A Serial Communications Board or a communications board must be installed to

make the connection.

Check the model and series of the PC against the type of CPU or communica-

tions board before making the connections.

The host units that can be connected to the RS-232C port of the NT31/NT31C by

the RS-422A type NT link (1:N) function via a convertor are indicated in the table

below.

CPUs with Built-in

RS-422A type

NT Link (1:N) Function

CPU that becomes

connectable by installing a

communication board

Series

Model Name

CS1G-CPU42/43/44/45-E(V1)

(*1)

CS1G

CS1H

CS1

series

---

CS1H-CPU63/64/65/66/

(*1)

67-E(V1)

(*2)

C200HE-CPU32-(Z)E

C200HE

(-Z)E

(*2)

C200HE-CPU42-(Z)E

(*2)

C200HG-CPU33-(Z)E

(*2)

C200HG-CPU43-(Z)E

---

C200HG (-Z)E

(*2)

C200HG-CPU53-(Z)E

(*2)

C200HG-CPU63-(Z)E

(*2)

C series

C200HX-CPU34-(Z)E

(*2)

C200HX-CPU44-(Z)E

(*2)

C200HX-CPU54-(Z)E

C200HX

(-Z)E

---

(*2)

C200HX-CPU64-(Z)E

(*2)

C200HX-CPU65-ZE

(*2)

C200HX-CPU85-ZE

(*3)

CQM1H-CPU51/61

CQM1H

*1 The serial CS1W-SCB41-E communication board is required.

*1 A C200HW-COM03-V1 or C200-COM06-V1 communication board is required.

*1 A CQM1H-SCB41 Serial Communication Board is required.

Settings at the Host

C-series C200HX/HG/HE(-Z)E and CQM1H

PC Setup Area Settings

Write the communication conditions directly into the PC Setup area (data

memory) using a Programming Device (e.g. CX-Programmer).

Make the setting indicated in the word shown below.

113

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Connection to

Word # Writing Value

Setting

Port A of a C200HX/

HG/HE(-Z)E

Use NT link (1:N)

DM6555

DM6550

connected PTs (1 to 7)

Port 2 of a CQM1H

5j 00

*1 The Communications Board’s RS-422A/485 port

*1 The Serial Communications Board’s RS-422A/485 port

*1 When using C200HE(-Z)E, the maximum PT unit number is 3.

For details on setting the PC Setup area settings, refer to the PC’s operation

manual.

Reference: S There are no Serial Communication Boards for the C200HX/HG/HE(-Z)E in

which port B is the RS-422A/485 port.

S There are no Serial Communication Boards for the CQM1H in which port 1 is

the RS-422A/485 port.

Setting the DIP Switches on a C200HX/HG/HE(-Z)E Communication Board

Set the switches on a C200HX/HG/HE(-Z)E communication board as follows.

Switch 1: Set to 4 (4-wire type, for RS-422A), or

Set to 2 (2-wire type, for RS-485)

Switch 2 : Set to ON for terminator ON (termination resistance applied)

Setting Switches on a CQM1H Serial Communications Board

Set the switches on a CQM1H Serial Communications Board as follows.

Wire selection (WIRE): Set to 4 (4-wire type, for RS-422A)

Set to 2 (2-wire type, for RS-485)

Terminator (TERM):

Set to ON for termination ON.

Serial Communications Board

(Inner Board slot 1)

Terminator Switch (TERM)

Set to ON (right side)

Wire Selection Switch (WIRE)

When using RS-422A: Set to 4 (right side) for 4-wire type.

When using RS-485: Set to 2 (left side) for 2-wire type.

Connecting to CS1 Series Serial Communication Board

Serial Communications Board with RS-422A/485 port equipped for CS1 series

CPU type :

CS1W-SCB41 (The port 2 is RS-422A/485 port.)

114

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Setting the Front Switches

RDY

COMM1

COMM2

Port 1

RS-232C

PORT1

Terminal resistance setting switch (TER)

Set to ON (Terminal resistance is present.) (right side)

OFF

ON TERM

WIRE

Two wire type/four wire type changeover switch (WIRE)

For RS-422A : 4 (4 wire type) (right side)

For RS-485 : 2 (2 wire type) (left side)

Port 2

PORT2

(RS422/

RS485)

RS-422A/485

SCB41

Allocation DM Area Settings for CPU

Settings are written from the Programming Device (a Programming Console or

CX-Programmer) directly into the allocation DM area (system setting area) of

the CPU. After settings are written, they become effective by turning the power

ON, restarting the unit, restarting the communication port, or executing the

STUP command.

In the following, the channel numbers of the allocation DM area and settings are

shown.

Allocation DM

area (CH)

Writing Value

Settings

Port 2

DM32010

8200

0000 to 0009

000

NT link (1:N) mode

Communications baud rate (standard)

= The largest model number of the con-

nected PT (0 – 7)

(*1)

DM32011

DM32016

*1 Set any value between 0000 and 0009 Hex for the communications baud rate.

The same baud rate will be used regardless of the value as long as it is between

0000 and 0009 Hex.

For example, when connecting PTs with model numbers 3, 4, 5, and 6 to port 2 in

the NT link (1:N), set a value of 8200 Hex for D32010, 0000 Hex for DM32011,

and 0006 Hex for D32016.

Using the High-speed NT Link (1:N) Method

Compatible Host Units

Only OMRON’s CS1H and CS1G PCs support the high-speed 1:N NT Link

through RS-422A/RS-485. The high-speed 1:N NT Link must be established

through a CS1W-SCB41-E Serial Communications Board. (If a Serial Commu-

nications Board is used, even CS1-series Units without the “-V1” suffix can be

connected via high-speed 1:N NT Link.)

Be sure to check the model number of the PC and Board/Unit before trying to

establish the high-speed 1:N NT Link.

The following table shows which CS1-series PCs can be connected to an

NT31/NT31C with the high-speed 1:N NT Link through RS-422A/RS-485.

115

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

PCs supporting direct connection to PCs supporting connection through a

the CPU Unit

Serial Communication Board

(*1)

CS1G-CPU42/43/44/45-E(V1)

---

(*1)

CS1H-CPU63/64/65/66/67-E(V1)

*1 A CS1W-SCB41 Serial Communication Board is required.

Settings at the Host

Connecting to a CS1 Series Serial Communications Board

Serial Communications Board equipped with an RS-422A/485 port for CS1-se-

ries CPU Units:

CS1W-SCB41 (Port 2 is an RS-422A/485 port.)

Reference: Serial Communications Boards and Serial Communications Units with lot num-

ber 991220 (12/20/99) and later support the high-speed 1:N NT Link. Boards and

Units with earlier lot numbers cannot be used.

Setting the Front Switches

RDY

COMM1

COMM2

Port 1

RS-232C

PORT1

Terminator Switch (TERM)

Set to ON (right side)

OFF

ON TERM

WIRE

Wire Selection Switch (WIRE)

RS-422A:Set to 4 (right side) for 4-wire type.

RS-485: Set to 2 (left side) for 2-wire type.

PORT2

(RS422/

RS485)

Port 2

RS-422A/485

SCB41

CPU Allocation DM Area Settings

Setting is written from the Programming Device (a Programming Console or CX-

Programmer) directly into the allocation DM area (system setting area) of the

CPU. After the setting is written, it becomes effective by turning the power ON,

restarting the unit, restarting the communication port, or execution of the STUP

command.

In the following table, the relevant word addresses in the allocation DM area and

settings are shown.

Allocation DM area

Writing

Settings

Value

8200

000A

Port 2

DM32010

NT link (1:N) mode

DM32011

DM32016

Communications baud rate (high-speed)

j = The largest model number of the

connected PT (0 – 7)

000j

For example, when connecting PTs with model numbers 3, 4, 5, and 6 to port 2,

set the value 8200 Hex to DM32010, 000A Hex to DM32011, and 0006 Hex to

DM32016.

When using the Memory

Link Method

With the memory link method, the connection can be made to a personal com-

puter and an FA computer with RS-422A.

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

When connecting to the host with the memory link method, it is necessary to

create a program for the memory link at the host side.

The following are the communication conditions that can be used with the

memory link method. For the host (a personal computer, an FA computer, etc.),

its setting should be compatible to one of the communication conditions listed in

the following table. Set the same communication conditions at the NT31/NT31C

by the memory switch. (page 165).

Item

Input/Output board

Communication speed

Data bits length

Stop bits length

Parity

Setting at Host

RS-422A

1200, 2400, 4800, 9600, 19200, 38400 bps.

7 bits, 8 bits

1 bit, 2 bits

None, even, odd

Flow control

None, XON/XOFF

5-2-2 Direct Connection between RS-422A Ports at Both Units

The connection method in which the RS-422A ports of an NT31/NT31C and a

host are connected is described here.

Host link/CPU/

Communication unit

NT31/NT31C

SYSMAC

CS1 series PLC,

C series PLC,

CVM1/CV series

PLC, SRM1

9-pin connector or

Serial port B

25-pin

25-pin connector

(RS-422A, 25-pin type)

connector

RS-422A cable with connectors (max. length: 500m)

Connecting an NT31/NT31C and Host (RS-422A)

NT31/NT31C

Host

RS-422A

Wiring When Connecting a C-series Host Link Unit or CPM1 (Host Link)

Applicable units:

C200H-LK202-V1

3G2A5-LK201-EV1

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

C500-LK203

3G2A6-LK202-EV1

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

connector

PC side

−

Pin number Abbreviation

Connector

hood

−

RDB

−

RS-422A

connector

TRM

RDB (+)

−

SDB (+)

−

SDB

RDA

−

SDA (−)

RDA (−)

−

SDA

(9-pin type)

Shielding wire

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-422A cable.

Wiring When Connecting CPM1, CPM2A, CPM2C, or SRM1

Applicable units:

CPM1-10CDR-

CPM1-20CDR-

CPM1A-10CDj-

CPM1A-30CDj-

CPM1A-20CDj-

CPM1A-40CDj-

CPM2A-30CD

CPM2A-60CD

CPM2A-40CD

CPM2C-10

CPM2C-20

SRM1-C02-V2

Connect to the PC through a CPM1-CIF11 RS-422A Adapter.

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

connector

PC side

−

Abbreviation

−

RS-422A

SDB

SDA

RDB

RDA

TRM

SDB (+)

SDA (−)

RDB (+)

RDA (−)

terminal

block

RDB (+)

SDB (+)

−

(9-pin type)

−

SDA (−)

RDA (−)

−

Shielding wire

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-422A cable.

118

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Wiring When Connecting a CS1-series CS1G/H Serial Communications

Board, C series C200HX/HG/HE(-Z)E Communication Board, CQM1H Seri-

al Communications Board, or CVM1/CV-series Host Link Unit

Applicable units:

CS1G-CPU42-E(V1)

CS1G-CPU44-E(V1)

CS1H-CPU63-E(V1)

CS1H-CPU65-E(V1)

CS1H-CPU67-E(V1)

C200HE-CPU32-(Z)E

C200HG-CPU33-(Z)E

C200HG-CPU53-(Z)E

C200HX-CPU34-(Z)E

C200HX-CPU54-(Z)E

C200HX-CPU65-ZE

CQM1H-CPU51

CS1G-CPU43-E(V1)

CS1G-CPU45-E(V1)

CS1H-CPU64-E(V1)

CS1H-CPU66-E(V1)

C200HE-CPU42-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

C200HX-CPU85-ZE

CQM1H-CPU61

CV500-LK201 (communication port 2)

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

interface

PC side

−

Pin number Abbreviation

Connector

hood

−

SDA

SDB

−

RS-422A

interface

TRM

RDB (+)

SDB (+)

−

RDA

−

SDA (−)

RDA (−)

−

RDB

−

(9-pin type)

Shielding wire

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not connect the functional ground of

the NT31/NT31C to the shielding of the RS-422A cable.

Wiring When Connecting a CVM1/CV-series CPU

Applicable units:

CV500-CPU01-EV1

CV2000-CPU01-EV1

CV1000-CPU01-EV1

CVM1-CPU11-EV

CVM1-CPU01-EV

CVM1-CPU21-EV

119

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

CVM1/CV-series CPUs whose model names do not have the suffix -EVj can-

not be connected by any connection method.

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

connector

PC (CPU) side

−

Pin number Abbreviation

Connector

hood

−

SDA

SDB

−

RS-422A

connector

TRM

RDB (+)

SDB (+)

RDA

−

SDA (−)

RDA (−)

−

RDB

−

(9-pin type)

Shielding wire

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-422A cable.

Wiring for a Memory Link Connection

Prepare the adapter cable while referring to the following diagram.

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

connector

Host side

−

Abbreviation

Connector

hood

−

SDA

SDB

RS-422A

connector

TRM

RDB (+)

SDB (+)

−

ROA

ROB

−

SDA (−)

RDA (−)

−

Shielding wire

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-422A cable.

120

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

5-2-3 Direct Connection between RS-485 Ports at Both Units

The connection method in which the RS-485 ports of an NT31/NT31C and a host

are connected is described here.

NT31/NT31C

CPU

CS1G/H

C200HX/HG/HE(-Z)E

CQM1H

Serial port B

(RS-485, 25-pin type)

9-pin connector

25-pin connector

RS-485 cable with connectors (max. length: 500 m)

Reference: When RS-485 is used at the PT side, only the NT link (1:N) method (standard or

high-speed) can be used.

Connecting an NT31/NT31C and Host

NT31/NT31C

Host

RS-485

Wiring When Connecting a CS1-series CS1G/H Serial Communications

Board and C Series C200HX/HG/HE(-Z)E Communications Board, or

CQM1H Serial Communications Board

Applicable units:

CS1G-CPU42-E(V1)

CS1G-CPU44-E(V1)

CS1H-CPU63-E(V1)

CS1H-CPU65-E(V1)

CS1H-CPU67-E(V1)

C200HE-CPU32-(Z)E

C200HG-CPU33-(Z)E

C200HG-CPU53-(Z)E

C200HX-CPU34-(Z)E

C200HX-CPU54-(Z)E

CS1G-CPU43-E(V1)

CS1G-CPU45-E(V1)

CS1H-CPU64-E(V1)

CS1H-CPU66-E(V1)

C200HE-CPU42-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

C200HX-CPU65-ZE

CQM1H-CPU51

C200HX-CPU85-ZE

CQM1H-CPU61

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

connector

PC (CPU) side

−

Pin number Abbreviation

Shielding wire

Connector

hood

−

SDA (−)

RS-422A

connector

TRM

SDB (+)

RDB (+)

−

SDB (+)

−

RDA (−)

−

SDA (−)

RDA (−)

−

RDB (+)

−

(9-pin type)

−

RSB (+)

RSA (−)

−

(25-pin type)

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-422A cable.

5-2-4 1:N Connection among RS-422A Ports

The connection method in which the RS-422A ports of multiple NT31/NT31Cs

and one host are connected in a 1:N connection is described here.

CPU

NT31/NT31C

CS1G/H

Serial port B

(RS-422A, 25-pin

type)

C200HX/HG/HE(-Z)E

CQM1H

9-pin connector

25-pin connector

Relay terminal block

Max. 2 m

RS-422A cables

(max. total length 500 m)

24V

PRINTER PORT

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Reference: S Communication using the RS-422A type standard NT link (1:N) method is

possible only when a CS1W-SCB41 Serial Communications Board is installed

in a CS1 series CS1G/H, a Communications Board is installed in a C200HX/

HG/HE(-Z)E, or a CQM1H-SCB41 Serial Communications Board is installed

in a CQM1H.

S Communication using the RS-422A type high-speed NT link (1:N) method is

possible only when a CS1W-SCB41 Serial Communications Board is installed

in a CS1 series CS1G/H.

Connecting between

NT31/NT31C Units

The relay terminal block is not included in this figure. Insert the relay terminal

block so as to achieve the wiring configuration shown below.

NT31/NT31C

Host

RS-422A

NT31/NT31C side

Abbreviation Pin number

Pin number Abbreviation

Shielding wire

Connector

hood

−

RS-232C/

422A/485

connector

RS-232C/

422A/485

connector

−

TRM

RDB (+)

−

RDB (+)

−

SDA (−)

RDA (−)

−

SDA (−)

RDA (−)

−

RSB (+)

RSA (−)

−

RSB (+)

RSA (−)

−

(25-pin type)

Make the connection between pin numbers 9 and 10 at the NT31/NT31C at the

end of the RS-422A cable (marked ^:in the figure above) only.

In order to avoid an FG ground loop, connect the functional ground of only one of

the NT31/NT31C units to the shielding of the RS-422A cable.

Connecting an NT31/NT31C and a Host

NT31/NT31C

Host

RS-422A

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Wiring When Connecting a CS1-series CS1G/H Serial Communication

Board, C Series C200HX/HG/HE(-Z)E Communication Board, or CQM1H

Serial Communications Board

Applicable units:

CS1G-CPU42-E(V1)

CS1G-CPU44-E(V1)

CS1H-CPU63-E(V1)

CS1H-CPU65-E(V1)

CS1H-CPU67-E(V1)

C200HE-CPU32-(Z)E

C200HG-CPU33-(Z)E

C200HG-CPU53-(Z)E

C200HX-CPU34-(Z)E

C200HX-CPU54-(Z)E

C200HX-CPU65-ZE

CQM1H-CPU51

CS1G-CPU43-E(V1)

CS1G-CPU45-E(V1)

CS1H-CPU64-E(V1)

CS1H-CPU66-E(V1)

C200HE-CPU42-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

C200HX-CPU85-ZE

CQM1H-CPU61

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

interface

PC side

−

Pin number Abbreviation

Shielding wire

Connector

hood

−

SDA (−)

RS-422A

interface

TRM

SDB (+)

RDB (+)

−

SDB (+)

−

RDA (−)

−

SDA (−)

RDA (−)

−

RDB (+)

−

(9-pin type)

−

RSB (+)

RSA (−)

−

(25-pin type)

Next PT

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-422A cable.

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

5-2-5 1:N Connection among RS-485 Ports

The connection method in which the RS-485 ports of multiple NT31/NT31Cs

and one host are connected in a 1:N connection is described here.

CPU

NT31/NT31C

CS1G/H

Serial port B

(RS-485, 25-pin type)

C200HX/HG/HE(-Z)E

CQM1H

9-pin connector

25-pin connector

Relay terminal block

Max. 2 m

RS-485 cables

(max. total length 500 m)

24V

PRINTER PORT

Reference: S Communication using the RS-485 type standard NT link (1:N) method is pos-

sible only when a CS1W-SCB41 Serial Communications Board is installed in a

CS1 series CS1G/H, a Communications Board is installed in a C200HX/HG/

HE(-Z)E, or a CQM1H-SCB41 Serial Communications Board is installed in a

CQM1H.

S Communication using the RS-485 type high-speed NT link (1:N) method is

possible only when a CS1W-SCB41 Serial Communications Board is installed

in a CS1 series CS1G/H.

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Connecting between NT31/NT31C Units

NT31/NT31C

Host

RS-485

NT31/NT31C side

Abbreviation Pin number

Pin number Abbreviation

Shielding wire

Connector

hood

−

RS-232C/

422A/485

connector

RS-232C/

422A/485

connector

−

TRM

RDB (+)

SDB (+)

−

SDA (−)

RDA (−)

−

SDA (−)

RDA (−)

−

RSB (+)

RSA (−)

−

RSB (+)

RSA (−)

−

(25-pin type)

Next PT

Make the connection between pin numbers 9 and 10 at the NT31/NT31C at the

end of the RS-485 cable (marked ^:in the figure above) only.

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-422A cable.

Connecting an

NT31/NT31C and a Host

The relay terminal block is not included in this figure. Insert the relay terminal

block so as to achieve the wiring configuration shown below.

NT31/NT31C

Host

RS-485

Wiring When Connecting a CS1-series CS1G/H Serial Communication

Board, C Series C200HX/HG/HE(-Z)E Communication Board, or CQM1H

Serial Communications Board

Applicable units:

CS1G-CPU42-E(V1)

CS1G-CPU44-E(V1)

CS1H-CPU63-E(V1)

CS1G-CPU43-E(V1)

CS1G-CPU45-E(V1)

CS1H-CPU64-E(V1)

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

CS1H-CPU65-E(V1)

CS1H-CPU67-E(V1)

C200HE-CPU32-(Z)E

C200HG-CPU33-(Z)E

C200HG-CPU53-(Z)E

C200HX-CPU34-(Z)E

C200HX-CPU54-(Z)E

C200HX-CPU65-ZE

CQM1H-CPU51

CS1H-CPU66-E(V1)

C200HE-CPU42-(Z)E

C200HG-CPU43-(Z)E

C200HG-CPU63-(Z)E

C200HX-CPU44-(Z)E

C200HX-CPU64-(Z)E

C200HX-CPU85-ZE

CQM1H-CPU61

NT31/NT31C side

Abbreviation Pin number

Connector

hood

−

RS-232C/

422A/485

connector

PC (CPU) side

−

Pin number Abbreviation

Shielding wire

Connector

hood

SDA (−)

−

RS-422A

connector

TRM

SDB (+)

−

RDB (+)

SDB (+)

−

RDA (−)

−

SDA (−)

RDA (−)

−

RDB (+)

−

(9-pin type)

−

RSB (+)

RSA (−)

−

(25-pin type)

Next PT

In order to avoid an FG ground loop, do not connect the functional ground of the

NT31/NT31C to the shielding of the RS-485A cable.

5-2-6 Recommended Connectors, Cables and Crimp Terminals

Connectors and Cables Recommended for RS-422A/485

When making an RS-422A/485 connecting cable, as far as possible use the rec-

ommended parts indicated in the table below. When using the memory link

method, however, use a connector that matches with the RS-422A port at the

CPU (CP) side. Some units come supplied with one connector and connector

hood.

Check the required parts and prepare them in advance.

Name

Model

Maker

Remarks

Delivered with the following

units:

25-pin type

XM2A-2501

Made by OMRON

C500-LK203

Connector

Delivered with the following

units:

25-pin type

DB-25P F-N

3G2A6-LK201-EV1

3G2A5-LK201-EV1

Made by JAE

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Connecting to the Host’s RS-422A/485 Port

Section 5-2

Name

Model

Maker

Remarks

Delivered with the following

units:

25-pin type

XM2S-2511

Made by OMRON

C500-LK203

Connector

hood

Delivered with the following

units:

25-pin type

DB-C2-J9

3G2A6-LK201-EV1

3G2A5-LK201-EV1

Made by JAE

Tachii Electric

Wire Co., Ltd.

Cable

TKVVBS4P-03

1.25-N3A

(fork type)

Japan Solderless

Terminal MFG

Recommended cable size:

AWG22 to 18

(0.3 to 0.75 mm )

Crimp

terminals

Y1.25-3.5L

(fork type)

Molex Inc.

The terminal screws of the RS-422A adaptor (CPM1-CIF11) are M3 specifica-

tion. When wiring, use crimp terminals for M3 use. Tighten terminal screws with

a tightening torque of 0.5 N@m.

Use the same specification of the terminal screws which is used in the relay ter-

minal block.

Note Always use crimp terminals for wiring.

Examples of applicable terminals

Round type

Fork type

6.2 mm or less

5-2-7 Setting the Terminal Resistance for RS-422A/485 Communications