Omron NT31,NT31C, NT31, NT31C Setup Manual

Setup Manual

Programmable Terminals

NT31 and NT31C

Cat. No. V062-E1-02

NT31and NT31C
Programmable Terminals

Setup Manual

Revised January 2003

iv

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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 dam­age to property.

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

serious injury.

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

serious injury.

Caution 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 any­thing 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

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any
form, or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permis­sion 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 informa­tion contained in this publication.

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TABLE OF CONTENTS

vii

PRECAUTIONS xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

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

SECTION 1

General 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1 Role and Operation of the NT31/NT31C 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2 Functions of the NT31/NT31C 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3 System Configuration 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4 Communications with the Host 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5 Communications Using Memory Links 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-6 Before Operating 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2

Preparing for Connection 25. . . . . . . . . . . . . . . . . . . . . . . . .

2-1 Method for Connection to the Host 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 Names and Functions of Parts 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3

Hardware Settings and Connections 31. . . . . . . . . . . . . . . .

3-1 Installation 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 Connecting to the Support Tool 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3 Connecting a Printer 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4 Connecting a Bar Code Reader 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5 Using a Memory Unit (-Vj Versions) 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6 Using a Memory Unit (Versions without the -Vj Suffix) 47. . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4

Connecting to the Host from the RS-232C Port 53. . . . . . .

4-1 Connecting to the RS-232C Port at the Host 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5

Connecting to the Host from the RS-422A/485 Port 85. . . .

5-1 Connecting to the Host’s RS-232C Port 86. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2 Connecting to the Host’s RS-422A/485 Port 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 6

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

6-1 System Menu Operation Flow 133. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-2 Starting the NT31/NT31C 134. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-3 Operation Modes and the System Menu 135. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-4 Memory Initialization 140. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-5 Operations in the System Installer Mode 150. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-6 Transmitting the Screen Data 155. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7 Setting Conditions for Communications with Host by Using Memory Switches 157. . . . . . .

6-8 Starting Operation 168. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-9 System Settings 168. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

6-11 System Maintenance 191. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-12 Programming Console Function 221. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-13 Device Monitor Function 227. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-14 Version Display 230. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE OF CONTENTS

viii

SECTION 7

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

7-1 Troubleshooting 232. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2 Responding to Displayed Error Messages 235. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-3 Maintenance of the NT31/NT31C 241. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-4 Inspection and Cleaning 245. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendices

A Specifications 247. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B Dimensions 255. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C Using an RS-232C/RS-422A Convertor Unit 259. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D Transporting and Storing the NT31/NT31C 265. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E Making the Cable 267. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F Making the Cable for Connecting a PC 269. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

G Making the Cable for Connection to a Bar Code Reader 271. . . . . . . . . . . . . . . . . . . . . . . . . . .

H Making the Cable for Connection to a Printer 273. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I Relationship between System Program and Hardware 275. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

J Model List 277. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

K Option List 283. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

ix

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 communica­tions 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 connec­tion, 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 Con­vertor 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

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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 meth­ods, 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 se­ries: 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 se­ries: Allen-Bradley SLC 500 Series, GE Fanuc 90-20 and 90-30 Series, and Sie­mens S7-300 and S7-400 Series. This manual describes the connection and set­up methods for these controllers.

xi

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

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

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

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

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3Safety Precautions

xii

1 Intended Audience

This manual is intended for the following personnel, who must also have knowl­edge 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.

2 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 ma­chines, 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.

3 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 cor­rectly.

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

serious injury.

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

moderate injury, or property damage.

Safety Conventions
andtheir Meanings

3Safety Precautions

xiii

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.

1

SECTION 1

General

This section provides fundamental information about the functions and features of the PTs, types of connection, communica­tion methods, etc. This information will enable you to understand the applications of the PTs.

1-1 Role and Operation of the NT31/NT31C 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1-1 Operation of an NT31/NT31C at an FA Production Site 2. . . . . . . . . . . . . . . . . . . .

1-1-2 Operations of the NT31/NT31C 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2 Functions of the NT31/NT31C 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-1 Features 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-2 Comparison between NT31 and NT31C 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-3 Additional Functions of the V2 Versions 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-4 Comparison between NT30/NT30C and NT31/NT31C 7. . . . . . . . . . . . . . . . . . . .

1-2-5 Principal Functions of NT31/NT31C 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2-6 Displays 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3 System Configuration 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3-1 Peripheral Devices That Can Be Connected 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3-2 Connecting to the Host 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4 Communications with the Host 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-1 Direct Connection Function 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-2 Host Link 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-3 NT Link 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4-4 Connecting to other Companies’ PCs 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5 Communications Using Memory Links 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5-1 Memory Link 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5-2 Comparison between Direct Connection and Memory Link 21. . . . . . . . . . . . . . . . .

1-5-3 Memory Link Online Transfer Function 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-6 Before Operating 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1SectionRole and Operation of the NT31/NT31C

2

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

The NT31/NT31C displays real-time information about the system and equip­ment operating status, etc. Its power of expression is enhanced by graphs and
other visuals, making the displays easy to understand.

Production Control (3)

Product

% achieved

Today’s target 560 441

Current production 305 275

Number defective 2 8

Number repaired 7 15

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

Setting touch switches on the NT31/NT31C allows workers to use the
NT31/NT31C as an operating panel; the results of the operations are trans­mitted to the host.

Electroplating control

Transport

Electr.

head

Wash.

head

Corr. prv.

head

Clamp

Unclamp

Int. stop

Adv.

Rev.

Electro-

lyte

Wash

Corr.

prv.fluid

Production Line Status
Monitoring

Directions to Workers on
the Shop Floor

Panel Switch Functions

1-1SectionRole and Operation of the NT31/NT31C

3

1-1-2 Operations of the NT31/NT31C

The information to be displayed (screen data) can be created on a computer us­ing 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.

The NT31/NT31C can be connected to the host by a host link or NT link and re­ceive necessary data from the host.

Host link, NT link

Host

Data input using the touch panel (switch ON/OFF statuses, numeric values,
character strings) can be transmitted to the host.

Touch panel

Host

ON/OFF information, numeric

data, etc.

The screen data to be displayed on the NT31/NT31C can be created on a per­sonal computer using the Support Tool. Connect the NT31/NT31C to the per­sonal computer with an RS-232C cable and transmit the screen data to the
NT31/NT31C.

Create screen data.

Personal
computer

(Support Tool)

Screen data

RS-232C

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.

Displays Screens

Receives Data from a
Host

Sends Data to a Host

Screen Data

1-2SectionFunctions of the NT31/NT31C

4

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.

POWER

RUN

320 dots

240 dots

Wide angle of visibility

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. (Af­ter 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.

Touch Switch Operation

1-2SectionFunctions of the NT31/NT31C

5

Screen data can be checked simply by operations at the NT31/NT31C system
menu, without connecting up to the Support Tool.

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

The number of elements that can be registered on one screen has been consid­erably increased, making it possible to create more expressive screens. For de­tails, refer to Display Restrictions in Appendix A Specifications of the

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

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 unneces­sary, reducing the load on the host.

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

By using the system installer supplied with the Support Tool (Type NT­ZJCAT1-EV4), the system program at the NT31/NT31C can be changed easily
from a personal computer.

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

Compatible with Sequencers in the following series: Mitsubishi A-series (Calcu­lator Link) and FX-series (Programming Console), Allen-Bradley SLC 500 Se­ries, GE Fanuc 90-20 and 90-30 Series, and Siemens S7-300 and S7-400 Se­ries. Specialized system programs can be installed that allow the NT31/NT31C
to be controlled from other companies’ Sequencers.

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 dif­ferences between the NT31 and NT31C are tabled below:

Function NT31 NT31C

Type 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.

Screen Data Check
Function

Increased Screen Data
Capacity

Large Increase in
Maximum Number of
Registered Elements

Binary Data can be Read
to/Written from the Host

Character Display Using
High Definition Fonts

Simple Version Upgrades

Complies with
International Standards

Compatible with Other
Vendors’ Devices

Multiple Windows

1-2SectionFunctions of the NT31/NT31C

6

1-2-3 Additional Functions of the V2 Versions

The V2 versions of NT31/NT31C are supplemented and enhanced by the fol­lowing functions.

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

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.

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.

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.

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 to Appendix 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

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.

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.

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.

High-speed 1:N NT Link

Additional Mathematical
Functions

Device Monitor Function

Interlock Function

Improved Lamp/Touch
Switch Labels

NT30/NT30C and
NT620S/NT620C/NT625C
Emulation

Additional CS1 Data
Areas Accessible

Recipe Function

Adjusting Contrast and
Brightness During PT
Operation

1-2SectionFunctions of the NT31/NT31C

7

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

Item NT30/NT30C NT31/NT31C

Support Tool used NT-ZJCAT1-EV4 or NT-ZA3AT-EV2 NT-ZJCAT1-EV4

DIP switches On rear of unit None (software settings)

Use of B7A unit Possible Not possible

Use of memory unit Not possible Possible

RS-232C interface Connector (9-pin) also used as port for

screen data transfer.

- Serial port A connector (also used
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 pro­gram data are supplied with the Sup­port Tool.

High-speed 1:N NT Link Not possible Possible*

1

Memory Link System program Exclusive use by Memory Link Same as OMRON connection

y

Screen data Shared with OMRON connection Exclusive use by Memory Link

LCD contrast adjustment By a control on the rear of the unit By touch panel operation

Backlight brightness adjustment Not possible By touch panel operation

Number of user-registered screens Maximum of 2000 Maximum of 3999

Screen data capacity*2

(User program memory)

512 KB 1 MB

Numeral string data Maximum of 1000 Maximum of 2000

Character string data Maximum of 1000 Maximum of 2000

Bit data 256 Maximum of 1000

Mathematical tables None 256 max.

Calculations can be executed
automatically in the PT.

*1

Image data Maximum of 224 Maximum of 4095

*3

Library data Maximum of 896 Maximum of 12288

*3

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 4 words 5 words (partial change of contents)*

3

PT status notify area size 3 words 2 words (partial change of contents)*

3

Window control area size None 9 CH*2

Registering continuous screen Possible Not possible (Use a screen switchover

as a substitute.)

Lamp/Touch switch labels Fixed display (1 line only) - Multiple lines can be displayed

*1

- ON/OFF switching is possible

*1

- Numeral display is possible

*1

- Character string display is possible

*1

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.

*1

Device monitor function Not possible Possible

*1

1-2SectionFunctions of the NT31/NT31C

8

Item NT31/NT31CNT30/NT30C

Recipe function 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.

*5

- 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 V versions of the NT31/NT31C.

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

1-2SectionFunctions of the NT31/NT31C

9

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.

Section

10

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 con­nection.

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 operat­ing 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 (NT­ZJ3AT1/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.

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.

Section

11

1-2-6 Displays

The NT31/NT31C can display various kinds of elements such as characters, nu­meric 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 per­sonal computer.

Lamps

Characters
(character string display)

Touch switches

Characters
(fixed display)

Bar graph

Line 1 Status

Stop

Restart

Machine name: NT31C-ST141

Production qty.: 137 units

Stage 2

Check 2Check 1

Stage 1

0% 50% 100%

25%

Numeric values
(numeral display)

Characters and various graphics (circles, circular arcs, sectors, polylines, poly­gons 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 writ­ten directly onto the screen.

Polyline Polygon Rectangle

Circle SectorArc

* 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 regis­tered 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.

Fixed Displays

Section

12

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 dis­played 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

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 nor­mal 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

ON

ON

Host

Unlit state Lit state

Image Library Lamps

ON

Unlit state Lit state

Host

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

Lamps

Touch Switches

Section

13

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: Stan­dard, 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.

Touch
switch area

When this
position is
pressed...

Display
frame

Shown
in
reverse
video

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.

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

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 nu­meric 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.

7 8 9
4 5 6
1 2 3
0 .

12345678

Window

Input

"

Character strings can be input at the PT by using touch switches, bar code read­ers, 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.

NT31C

NT31C NT31

NT631C

Character string setting input field

Display

Input

Numeral Displays

String Displays

Numeral Inputs

String Inputs

Section

14

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.

These are graphics whose display changes in accordance with the numeric val­ues 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%

–100%

0%

Example showing a series of 11
numeral memory table values
(with a check mark set for the
display sign)

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.

Thumbwheel Switches

Graphs

Section

15

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 (charac­ter 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

0

1

0

Bit

A000000
L001003
D010015

1(ON)

No.13

No.14

No.15

Message (character string table No. 32)
set for bit memory table No. 14

Character string table No. 32

Character string table No. 50
Image/library data 1002

HOST

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

No. 22

No. 23

No. 24

Recorded data

Message (character string table No. 13)
set for bit memory table No. 24

Character string table No. 13

Character string table No. 12

Character string table No. 11
Image/library data 005F

Bit memory table No. 24
97/12/04 11:19:20

Character string table No. 12
Image/library data 102A

Bit memory table No. 23
97/12/04 11:25:12

Image/library

data 102B

Character string table No. 13
Image/library data 102B

When the upper message displayed is pressed, the image/library
data (102B) set for bit memory table No. 13 is displayed.

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.

Alarm List/History

Recipe

1-3SectionSystem Configuration

16

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).

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

CVM1/CV series PCs, SRM1

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

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

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

Other companies’ PCs can also be connected.

Bar code reader

Bar codes can be read
as character strings.

RS-232C cable
(max. 15 m)
or
RS-422A/485 cable
(max. 500 m)

Printer

For printing out the
currently displayed
NT31/NT31C screen.

Personal computer

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
automatically at startup.

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.

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 (us­ing 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).

1-4SectionCommunications with the Host

17

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 NT30-KBA01
Replacement battery 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 con­nected 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 communica­tion 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 communica­tion 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.

1-4SectionCommunications with the Host

18

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 with­out 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 writ­ten 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.

PCNT31/NT31C

DM area I/O relay area

Auxiliary relay area Timers/counters

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

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.

1-4-3 NT Link

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 fol­lows.

• 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.

Features of the Direct
Connection Function

1-4SectionCommunications with the Host

19

PCs that can be connected with the 1:N connection NT Link method are as fol­lows: CQM1H, C200HX/HG/HE (-Z)E, CS1G/CS1H-E(V1).

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

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 allo­cated 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 pur­poses.

• 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 high­speed 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 com­munication 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-).

• 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-).

• 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 Back­plane. For details on the communication board/communication unit, refer to
the CS1-series Serial Communications Board/Unit Operation Manual
(W336-E1-).

• 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.

Features of the NT Link

1-5SectionCommunications Using Memory Links

20

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 (NT­ZJCAT1-EV4).

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 communica­tion.

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 com­mands are kept handy for read and write tasks of the numeral memory table,
character-string memory table, and bit memory table.

Lamp

PT memory

PT

RS-232C/422A
communication

PC

NT31/NT31C

Direct connection

Numeral
memory
table

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).

Compatible PC

1-5SectionCommunications Using Memory Links

21

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 pro­gram that is necessary for interchange of commands. This, however, gives ad­vantages to the memory link method by using a large variety of functions avail­able 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 meth­ods, 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.

1-6SectionBefore Operating

22

1-6 Before Operating

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

• For the host link, refer to

pages 54 and 101, and
the manuals for the host
link unit and peripheral
tools.

• For the NT link (1:1), refer

to pages 67 and 111.

• 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.

• For the Memory link, refer

to pages 72 and 116

Host

Set the host settings.

Connect to the
NT31/NT31C.

Create the host program.

Start operation.

NT31/NT31C

Install the PT in the
operation panel.

(page 32)

Connect the power supply.

(page 33)

Install the system program.

*1

(refer to page 151 and the
Support Tool manual)

Make the settings in the
system installer mode.

*2

(page 151)

Transmit the screen data.

(page 155)

Set the memory switches.

(page 157)

Connect to the host.

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.

Support Tool

Install the Support
Tool at the computer.

(refer to the manual for
the Support Tool)

Create the screens.

(Refer to the NT31/NT31C/NT631/NT631C

Programmable Terminal Reference Manual

and the Support Tool Operation Manual.)

*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:  For the system program, use the NT31/NT31C system program supplied as

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

 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,
NT631/NT631C

Reference Manual V064-E1-1

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

V061-E1-

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

V061-E1-

1-6SectionBefore Operating

23

Device or Software Manual

Number

Manual Title

PC SYSMAC CPM1 Operation Manual

W262-E1-

SYSMAC CPM1A Operation Manual

W317-E1-

SYSMAC CPM2A Operation Manual

W352-E1-

SYSMAC CPM2C Operation Manual

W356-E1-

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

W130-E1-

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

W217-E1-

SYSMAC C200HS Installation Guide

W236-E1-

SYSMAC C200HS Operation Manual (programming)

W235-E1-

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

W302-E1-

SYSMAC C200HX/HG/HE Programming Manual

W303-E1-

SYSMAC C200HX/HG/HE-Z Programming Manual

W322-E1-

SYSMAC C1000H/C2000H Operation Manual (programming)

W140-E1-

SYSMAC CQM1 Programming Manual

W228-E1-

SYSMAC CQM1H Operation Manual

W363-E1-

SYSMAC CVM1/CV500/CV1000/CV2000 Operation Manual: Ladder Dia­grams

W202-E1-

CS1-series CS1G/H-CPU -E Programmable Controllers Operation
Manual

W339-E1-

CS1-series Serial Communication Boards/Units Operation Manual

W336-E1-

SYSMAC CQM1H Series Serial Communications Board Operation Manual

W365-E1-

CompoBus Master Control
Unit

SRM1 Operation Manual

W318-E1-

Programming Devices SYSMAC Support Software Operation Manual: C-series PCs

W248-E1-

gg

SYSMAC Support Software Operation Manual: CVM1 PCs

W249-E1-

SYSMAC CPT User Manual and Quick Start Guide

W332-E1-
W333-E1-

CX-Programmer User Manual -

Host Link Unit/

SYSMAC C-series Host Link Unit Operation Manual

W143-E1-

Serial Communications

SYSMAC CVM1/CV-series Host Link Operation Manual

W205-E1-

B

oar

d

SYSMAC C200HW-COM01 C200HW-COM02-V1 to C200HW-COM06-EV1
Serial Communications Board Operation Manual

W304-E1-

25

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 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 Names and Functions of Parts 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1SectionMethod for Connection to the Host

26

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

Port

Usable Communication Methods Communication Type

Serial port A

Host link
NT link (1:1)
NT link (1:N)

*

Memory link
(Support Tool connection)
(bar code reader input function)

RS-232C

Serial port B

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)

* 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

2-1SectionMethod for Connection to the Host

27

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.

Communica- Communica-

Usable Communication

Method

Communica

tion Type at

PT

Communica

tion Type at

Host

Usable Connection Method

Host

link

NT
Link
(1:1)

NT

Link

(1:N)

Memory

link

Details

RS-232C RS-232C

Direct 1:1 connection

PT

Host

RS-232C (max. 15 m)

   

79

1:1 connection via a convertor unit

PT

RS-232C

(max. 2 m)

Host

RS-422A

(max. 500 m)

Convertor unit

(NT-AL001)

   

88

RS-422A

RS-232C

1:N connection via a convertor unit

PT

Host

Convertor unit

(NT-AL001)

RS-422A

(total length 500 m)

RS-232C

(max. 2 m)



92

RS-422A

Direct 1:1 connection

PT

Host

RS-422A (max. 500 m)

   

117

RS-422A

1:N connection

PT

Host

RS-422A (total length 500 m)



122

: Connection possible : Connection not possible

2-1SectionMethod for Connection to the Host

28

Communica- Communica-

Usable Communication

Method

Communica

tion Type at

PT

Communica

tion Type at

Host

Usable Connection Method

Host

link

NT
Link
(1:1)

NT

Link

(1:N)

Memory

link

Details

1:1 connection via a convertor unit

PT

Convertor unit

(NT-AL001)

Host

RS-485

(max. 500 m)

RS-232C

(max. 2 m)



88

RS-485

RS-232C

1:N connection via a convertor unit

PT

Host

Convertor unit

(NT-AL001)

RS-485

(total length 500 m)

RS232C

(max. 2 m)



92

RS 485

Direct 1:1 connection

PT

Host

RS-485 (max. 500 m)



121

RS-485

1:N connection

PT

Host

RS-485 (total length 500 m)



125

: 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 NT­AL001.

• 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 NT­AL001 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.

2-2SectionNames and Functions of Parts

29

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 set­tings is also described.

Front View

POWER

RUN

POWER LED
Lit in green when the power is supplied.

RUN LED

• 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).

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.

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

NT31 NT31C Body Color

NT31-ST121-EV2 NT31C-ST141-EV2 Beige

NT31-ST121B-EV2 NT31C-ST141B-EV2 Black

2-2SectionNames and Functions of Parts

30

Rear View

24V

DC

PRINTER PORT B PORT A

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.

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.

31

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 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-1 Installation Environment 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-2 Installation in the Operation Panel 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-3 Power Supply Connection 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1-4 Grounding 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 Connecting to the Support Tool 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3 Connecting a Printer 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3-1 Connection Method 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4 Connecting a Bar Code Reader 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4-1 Connection Method 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4-2 Setting a Bar Code Reader 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4-3 Data Format 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5 Using a Memory Unit (-V Versions) 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5-1 Installation Method 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5-2 Method of Use 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6 Using a Memory Unit (Versions without the -V Suffix) 47. . . . . . . . . . . . . . . . . . . . . . . . .

3-6-1 Installation Method 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6-2 Method of Use 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1SectionInstallation

32

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 ab­normal 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

+0.5mm

0mm

184

+0.5mm

0mm

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

PRINTER PORT B PORT A

3-1SectionInstallation

33

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

24 VDC
power supply

Breaker

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 mm2 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 7 mm or less

Recommended Terminals

Maker

Type

(fork type)

Type

(round type)

Applicable Wire

(stranded wire)

Japan Solderless Terminal MFG 2-YS3A 2-3.5

Fuji Terminal 2-YAS3.5 V2-S3.5

2.0 to 2.63 mm

2

Nichifu Terminal 2Y-3.5 2-3.5

3-1SectionInstallation

34

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

terminal (

) of the NT31/NT31C.

Fig. (a) Fig. (b)

Ground to
100 Ω max.

Grounding at
a single point

NT31/
NT31C

Host

NT31/
NT31C

Host

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

3-2SectionConnecting to the Support Tool

35

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 se­rial 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 B PORT A

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).

3-3SectionConnecting a Printer

36

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 op­erations, 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 be­low. 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 B PORT A

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 follow­ing 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).

3-4SectionConnecting a Bar Code Reader

37

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

PRINTER PORT B PORT A

Bar code reader

9-pin connector

Serial port A

(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.

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 Default Setting

Data bits 7 or 8 bits 7 bits

Stop bit(s) 1 or 2 bits 2 bits

Parity None, odd, even Even

Communications speed 4800, 9600, 19200 bps 9600 bps

Input Method Manual, Auto Manual

Settings at the
NT31/NT31C

3-4SectionConnecting a Bar Code Reader

38

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 Possible Settings

Communications speed 4800, 9600, 19200 bps

Parity EVEN, ODD, NONE

Stop bits 1 or 2 bits

Data bits 7 or 8 bits

Preamble STX

Postamble ETX

RS/CS control Available

Communication protocol No-protocol mode

Transmission of number of bar code label digits Transmission prohibited

Transmission of ID characters Transmission prohibited

Bar code types 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.

Data Data DataSTX ETX

(03H)(02H)

The characters which are effective as data are hexadecimal codes from 20 to
7F

H, and the maximum data length is 40 bytes.

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

Settings at the Bar Code
Reader

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

39

3-5 Using a Memory Unit (-V Versions)

This section discusses the use of a memory unit with a V1 or V2 version of an
NT31/NT31C PT (NT31-ST121-EV or NT31C-ST141-EV).

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

Without V

Earlier than Ver. 2

Conventional memory unit function. (Refer to

56.)

Without V

suffix

Ver. 2 or later

56.)

(System programs can not be transmitted us­ing memory unit.)

With V suf-

Earlier than Ver. 2

New memory unit function.

With V suf

fix

Ver. 2 or later

(Syst

em programs can be transm

itted

using

memory unit.)

The memory unit functions are determined by the model of PT being used, re­gardless 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 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 installing the memory unit, without connecting to the Support
Tool.

In addition, even if NT31/NT31C is replaced, the previous status can be main­tained 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.

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

40

Reference:  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.

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

els: NT31, NT31C, NT631, and NT631C (with or without the V suffix). One
memory unit can store screen data for up to two PTs of different models. How­ever, 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 cor­rect since these models have different numbers of colors.

 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.

 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.

4321

OFF

SW1 SW2

OFF

4321

Factory setting is turned all to off.

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.

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

41

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

• SW1

Switch Function

Automatic transmission (writing from the memor

y

OFF: Not executed

SW1-1

Automatic transmission (writing from the memory

unit to the PT)

ON : Executed

Automatic transmission (writing from the PT to

OFF: Not executed

SW1-2

Automatic transmission (writing from the PT to

the memory unit)

ON : Executed

Manual transmission (Direction of transmission

OFF: Not executed

SW1-3

Manual transmission (Direction of transmission

and bank used selected at the PT touch panel)

ON : Executed

OFF: Screen data

SW1-4 Data type to transfer

ON : System

program

• SW2

Switch Function

OFF: Disable

SW2-1 Disable/enable writing to PT

ON : Enable

OFF: Disable

SW2-2 Disable/enable writing to the memory unit

ON : Enable

*

OFF: Bank 0

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

ON : Bank 1

OFF: Disable

SW2-4 System/Screen simultaneous transmission

ON : Enable

* 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:  The DIP switch function of the memory unit is supplemented to NT31/NT31C

with the V suffix.

 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.

 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.

 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.

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

When Using a Memory Unit (page 45).

DIP Switch Functions

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

42

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 opera­tion 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.

SW1

SW1-4 ON: System program

OFF: Screen data

SW2-3 ON: Bank 1

OFF: Bank 0

SW2-4 ON: System/Screen transmitted simultaneously

OFF: System/Screen not transmitted simultaneously

SW2

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:  Setting SW2-4 to ON (System/Screen transmitted simultaneously) disables

the setting of SW1-4.

 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 dis­played 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 : flashes at intervals of 1 second
Transmitting : flashes at intervals of 0.5 second
Verifying : flashes at intervals of 0.5 second
Finished : lights up

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 a
Memory Unit Using
Automatic Transmission
(PT to Memory Unit)

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

43

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

SW2-4 ON: System/Screen transmitted simultaneously

OFF: System/Screen not transmitted simultaneously

SW2

SW1-4 ON: System program

OFF: Screen data

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.

Reference:  Setting SW2-4 to ON (System/Screen transmitted simultaneously) disables

the setting of SW1-4.

 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.

 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 : flashes at intervals of 1 second

Transmitting : flashes at intervals of 0.5 second
Verifying : flashes at intervals of 0.5 second
Finished : lights up

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
the PT Using Automatic
Transmission (Memory
Unit to PT)

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

44

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.

SW1

SW2

Setting of SW1-4 not relevant

Setting of SW2-3 not relevant

Setting of SW2-4 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 lan­guage.
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.

Reading and Writing Data
by Manual Transmission

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

45

(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 Destination

[PT]screen

[Memory unit] Bank 0

[Memory unit] Bank 1

[PT]system

[y]

[y]

[PT]system/screen [Memory unit] Bank 0/1 (fixed)

[Memory unit] Bank 0

 If system program is selected

[PT]system (fixed)

[Memory unit] Bank 1

y()

 If screen data is selected

[PT]screen (fixed)

[Memory unit] Bank 0/1 [PT]system/screen (fixed)

Reference:  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

 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.

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 au­tomatic transmission is operating, it is displayed in Japanese.

Errors When Using a
Memory Unit

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

46

• The continuous buzzer sounds.

• The RUN LED flashes.

If a protect setting error occurs when executing manual transmission, it is pos­sible 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 re­mains 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
(automatic
transmission)

Writing to the data write
destination has been
prohibited by the setting
of SW2-1 or SW2-2.

Turn the NT31/NT31C power
OFF, set the memory unit DIP
switches correctly, then turn the
NT31/NT31C power back ON.

Protect setting error
(manual
transmission)

Writing to the data write
destination has been
prohibited by the setting
of SW2-1 or SW2-2.

Perform either of the following
procedures.
 Press the OK touch switch to re-

turn to the memory unit manual
transmission screen, make the
correct settings, then try again.

 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

initialization of the
NT31/NT31C or memory
unit flash memory, or
during write processing.

Turn the NT31/NT31C power
OFF, then back ON. If the error
recurs, the flash memory at the
write destination may be faulty. In
this case, replace the unit.

Verify error An error occurred during

verification processing at
the flash memory of the
NT31/NT31C or the
memory unit.

Turn the NT31/NT31C power
OFF, then back ON. If the error
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
a system program or the
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.

Perform either of the following
procedures.
 Turn the NT31/NT31C power

OFF, correct the DIP switch set­tings of the memory unit, and
then turn the power back ON.

 Turn the NT31/NT31C power

OFF, set the DIP switch settings
to the manual transmission, and
then check the data inside the
memory unit.

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

47

3-6 Using a Memory Unit (Versions without the -V Suffix)

This section discusses the use of a memory unit with the basic versions of the
NT31/NT31C PTs (NT31-ST121-E or NT31C-ST141-E).

Reference: In this case, the function and use of the memory unit are the same as ones for the

NT31/NT31C without the V 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:  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.

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

els: NT31, NT31C, NT631, NT631C (with or without the V suffix). One
memory unit can store screen data for up to two PTs of different models. How­ever, 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 cor­rect 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.

 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.

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

48

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.

4321

OFF

SW1 SW2

OFF

4321

Factory setting is turned all to off.

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.

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

• SW1

Switch Function

Automatic transmission (writing from the memor

y

OFF: Not executed

SW1-1

Automatic transmission (writing from the memory

unit to the PT)

ON : Executed

Automatic transmission (writing from the PT to

OFF: Not executed

SW1-2

Automatic transmission (writing from the PT to

the memory unit)

ON : Executed

Manual transmission (Direction of transmission

OFF: Not executed

SW1-3

Manual transmission (Direction of transmission

and bank used selected at the PT touch panel)

ON : Executed

SW1-4 Reserved for system use (must be set to OFF)

• SW2

Switch Function

OFF: Disable

SW2-1 Disable/enable writing to PT

ON : Enable

OFF: Disable

SW2-2 Disable/enable writing to the memory unit

ON : Enable

OFF: Bank 0

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

ON : Bank 1

SW2-4 Reserved for system use (must be set to OFF)

DIP Switch Functions

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

49

* 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:  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.

 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.

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

When Using a Memory Unit (page 3 to 25).

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 opera­tion 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

SW2-3 ON: Bank 1

OFF: Bank 0

SW2

OFF

11223344

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 dis­played 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.

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.

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.

Writing Screen Data to a
Memory Unit Using
Automatic Transmission
(PT to Memory Unit)

Writing Screen Data to
the PT Using Automatic
Transmission (Memory
Unit to PT)

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

50

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

SW2-3 ON: Bank 1

OFF: Bank 0

SW2

OFF

11223344

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 dis­played 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.

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 trans­mission.

1, 2, 3... 1. Check that the NT31/NT31C power is OFF, then set the DIP switches on the

memory unit as follows.

Setting of SW2-3 not relevant

OFF

SW1 SW2

OFF

11223344

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.

Reading and Writing Data
by Manual Transmission

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

51

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.

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 pos­sible 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 re­mains 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
(automatic
transmission)

Writing to the data write
destination has been
prohibited by the setting
of SW2-1 or SW2-2.

Turn the NT31/NT31C power
OFF, set the memory unit DIP
switches correctly, then turn the
NT31/NT31C power back ON.

Protect setting error
(manual
transmission)

Writing to the data write
destination has been
prohibited by the setting
of SW2-1 or SW2-2.

Perform either of the following
procedures.
 Press the OK touch switch to re-

turn to the memory unit manual
transmission screen, make the
correct settings, then try again.

 Turn the NT31/NT31C power

OFF, correct the DIP switches
settings of the memory unit, then
turn the power back ON.

Errors When Using a
Memory Unit

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

52

Error Remedial ActionProbable Cause

Flash memory error An error occurred during

initialization of the
NT31/NT31C or memory
unit flash memory, or
during write processing.

Turn the NT31/NT31C power
OFF, then back ON. If the error
recurs, the flash memory at the
write destination may be faulty. In
this case, replace the unit.

Verify error An error occurred during

verification processing at
the flash memory of the
NT31/NT31C or the
memory unit.

Turn the NT31/NT31C power
OFF, then back ON. If the error
recurs, the flash memory at the
write destination may be faulty. In
this case, replace the unit.

53

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 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1-1 Host Types and Settings 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1-2 Connecting Directly between RS-232C Ports 79. . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1SectionConnecting to the RS-232C Port at the Host

54

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, re­fer to the PC Connection Manual (V042-E1-) or NT31/631 Multi Vendor Con-
nection Manual (V060-E1-).

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 con­nection is to be made, it may be possible to use OMRON cables with connectors.

RS-232C cable (max. 15 m)

HostNT31/NT31C

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

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 Communica­tion Board, Serial Communication Unit, or Host Link Unit before making a con­nection.

Compatible Host Units

4-1SectionConnecting to the RS-232C Port at the Host

55

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.

PC Se-

ries

Units with Built-in Host Link

Function

CPUs Connectable with Host Link

Units or Expansion Communication

Board

Host Link Unit/

Communication Board

Connectable

to

CS1 Se­ries

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

CS1W-SCU21
CS1W-SCB21
CS1W-SCB41

CS1G
CS1H

---

C1000H-CPU01-EV1
C2000H-CPU01-EV1

C120-LK201-EV1

C1000H
C2000H

---

C200HS-CPU01/03/21/23/31/33-E
C200HE-CPU11/32/42-E
C200HE-CPU11/32/42-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

C200H-LK201-EV1

C200HS
C200HE
C200HE-Z
C200HG
C200HG-Z
C200HX
C200HX-Z

C200HS-CPU21/23/31/33-E --- --- C200HS

C200HE-CPU42-E
C20HE-CPU42-ZE

C200HE-CPU32/42-E
C200HE-CPU32/42-ZE

C200HE
C200HE-Z

C200HG-CPU43/63-E
C200HG-CPU43/63-ZE

C200HG-CPU33/43/53/63-E
C200HG-CPU33/43/53/63-ZE

C200HW-COM02/04/

05/06-EV1

C200HG
C200HG-Z

C200HX-CPU44/64-E
C200HX-CPU44/64/65/85-ZE

C200HX-CPU34/44/54/64-E
C200HX-CPU34/44/54/64/65/85-ZE

05/06 EV1

C200HX
C200HX-Z

C Series

---

C1000H-CPU01-EV1
C2000H-CPU01-EV1

C500-LK201-EV1

C1000H
C2000H

---

C1000H-CPU01-EV1
C1000HF-CPU01-EV1
C2000H-CPU01-EV1

C500-LK203

C1000H (F)
C2000H

CPM1-10/20/30CDR-

+CPM1-CIF01

--- ---

CPM1A-10/20/30/40CD-

+CPM1-CIF01

--- ---

CPM1

CPM2A-30/40/60CD-

+CPM1-CIF01

(Peripheral port connection)

--- --- CPM2A

CPM2C-10/20-

(*1)

--- --- CPM2C

CQM1-CPU21-E
CQM1-CPU41/42/43/44-EV1

--- --- CQM1

CQM1H-CPU11/21/51/61 (*2) CQM1H-CPU51/61 CQM1H-SCB41 CQM1H

CV500-CPU01-EV1 CV500-CPU01-EV1 CV500

CV Se-

*

CV1000-CPU01-EV1 CV1000-CPU01-EV1

CV500-LK201

CV1000

ries

(*3)

CV2000-CPU01-EV1 CV2000-CPU01-EV1

CV500 LK201

CV2000

CVM1
Series
(*3)

CVM1-CPU01-EV2
CVM1-CPU11-EV2
CVM1-CPU21-EV2

CVM1-CPU01-EV2
CVM1-CPU11-EV2
CVM1-CPU21-EV2

CV500-LK201 CVM1

Compo­Bus/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 -EV cannot be connected.

4-1SectionConnecting to the RS-232C Port at the Host

56

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

Communications speed Set the same speed as for the NT31/NT31C.

(*1)

Transfer code ASCII, 7 data bits, 2 stop bits

Parity Even

1-to-1/1-to-N 1-to-N

(*2)

Instruction level Level 1, 2, 3

Unit # 00

*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

RUN
RCV

XMT

ERROR

SW1

0

0

5

2

@ Unit # (SW1, SW2)

Set these switches to 0.

@ Instruction level, parity, and transfer code (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.

SW3

SW2

SW4

Setting the Rear Switches

ON

1

CTS selector switch

External

0V (ON)

@ 1-to-1/1-to-N selection (DIP switch)

Set #3 to ON.

@ CTS selection (selector switch)

Set this always to 0V (ON).

2
3
4

Settings at the Host

4-1SectionConnecting to the RS-232C Port at the Host

57

C1000H(F)/C2000H Backplane mounted type: 3G2A5-LK201-EV1

Setting the Front Switches

Mode control (key switch)

Set this to host link.

Local

Host

Setting the Rear Switches

ON

ON

SW1

SW2

1

2

3

4

5

6

7

8

I/O port

RS-422A
RS-232C

Synchronization

Internal

External

Terminator

OFF

ON

CTS

0V

External

@ I/O port selection (selector switch)

Set this to RS-232C.

@ Unit # (DIP SW1)

Set SW1-1 to SW1-5 to OFF (0).

@ Synchronization (selector switch)

Set this to Internal.

@ 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)

@ 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).

1

2

3

4

5

6

7

8

4-1SectionConnecting to the RS-232C Port at the Host

58

C1000H/C2000H Backplane mounted type: C500-LK203

Setting the Rear Switches

ON

ON

SW1

SW2

I/O port

RS-422A
RS-232C

Synchronization

Internal

External

Terminator

OFF

ON

CTS

0V

External

@ I/O port selection (selector switch)

Set this to RS-232C.

@ Synchronization (selector switch)

Set this to Internal.

@ 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)

@ 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.)

5V supply

ON

OFF

@ Unit #, parity, and transfer code

(DIP SW1-1 to SW1-7)
Set SW1-1 to SW1-7 to OFF (0).

@ CTS selection (selector switch)

Set this always to 0V (ON).

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

4-1SectionConnecting to the RS-232C Port at the Host

59

C200H/C1000H/C2000H CPU mounting type: 3G2A6-LK201-EV1
Setting the Rear Switches

SW1

SW2

SW3

@ 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)

@ 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 (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 (commu­nication 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 pre­pared.

• 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 meth­od, 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 commu­nication conditions for the CPU bus unit settings.

Item Setting at Host

Communications speed Set the same speed as set at the NT31/NT31C

(*1)

Transfer code ASCII, 7 data bits, 2 stop bits

Parity Even

1-to-1, 1-to-N 1-to-N

(*2)

Instruction level 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).

4-1SectionConnecting to the RS-232C Port at the Host

60

*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. SYS­MAC support software).

For details on the CPU bus unit settings, refer to the SYSMAC CVM1/CV-series
Host Link Unit Operation Manual (W205-E1-).

Setting the Front Switches

RS-232C

Communications port 1
(RS-232C)

Communications port 2
(RS-232C/RS-422A)

I/O port selector switch

RS-422A

@ Unit # (SW3, SW4)

When using communication port 2, set these
switches to 0.

@ 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

@ I/O port selection (selector switch)

Set this to RS-232C.

@ CTS selection (DIP SW2 and SW3)

Set SW2 or SW3 to ON. (Set this always to 0V.)
To use communication port 1, set SW2. To use

communication port 2, set SW3.

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.

Set the unit number to 0 through F so
that it will not overlap with the numbers
used in other units.

SCU21

RUN
ERC
SD1
RD1

RDY
ERH
SD2
RD2

UNIT
No.

F

E

C

1

0

4-1SectionConnecting to the RS-232C Port at the Host

61

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)

Port 1 Port 2

Writi

ng Value

Setti

ngs

m m+10 8000

host link mode, 2 stop bits, even parity, data
length 7 bits

0000 Communication speed 9600 bps.

m+

1m+11

0007 Communication speed 19200 bps.

m+2 m+12 0000 Transmit delay time 0 ms.

m+6 m+16 0000 No CTS control Unit No.0 for host link

Connecting to a CPU Unit

CV-series and CVM1/CV-series (-EV

) 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 Setting at Host

Communications speed Set the same speed as set at the NT31/NT31C

(*1)

Stop bit 2 stop bits

Parity Even

Data length ASCII 7 bits

Unit # 00

*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-).

4-1SectionConnecting to the RS-232C Port at the Host

62

Setting the Front Switches

RS-232C

I/O port selector switch

RS-422A

@ 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.

Note
For CPUs manufactured before or during

June 1995 (lot No. 65), 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. 75), 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.)

4-1SectionConnecting to the RS-232C Port at the Host

63

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 Setting at Host

Communication mode Host link mode

Communications speed Set the same speed as set at the NT31/NT31C

(*1)

Stop bit 2 stop bits

Parity Even

Data length ASCII 7 bits

Unit # 00

*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 Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

0304 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 Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

0304 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 Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

0304 Data length 7 bits, 2 stop bits, even parity,

communications speed: 19200 bps

DM6558 0000 Unit # 00

4-1SectionConnecting to the RS-232C Port at the Host

64

C200HX/HG/HE(-Z)E: Serial Communications Board port B

Word # Writing Value Settings

DM6550 0001 Host link mode, no CTS control

Communication conditions set by the contents of DM

DM6551 0303 Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

0304 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 Data length 7 bits, 2 stop bits, even parity,

communications speed: 9600 bps

0304 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 fol­lowing 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

RS-232C port (D-Sub 9-pin) of CS1W-CN118 Built-in RS-232C port settings

Peripheral port of CS1W-CN114 Peripheral port settings

Peripheral port

RS-232C port
(D-Sub 9-pin, female)

CPM2C-CN111

CPM2C

RS-232C port
(D-Sub 9-pin, female)

CS1W-CN118

CPM2C

Peripheral port

CS1W-CN114

CPM2C

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.

4-1SectionConnecting to the RS-232C Port at the Host

65

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.

 Connecting PT to peripheral port
 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

 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

Set the mode setting switch to HOST (upper position).

CPM1­CIF01

4-1SectionConnecting to the RS-232C Port at the Host

66

CS1 series CPU type : CS1G/H-CPU-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 connect­ing to a peripheral port.

PC Setup

When connecting to a CS1 series CPU, set the following communication condi­tions 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 Setting at Host

Communication speed Set the same speed as set at the NT31/NT31C(*1)

Stop bits 2 stop bits

Parity Even

Data length ASCII 7 bits

Unit No. for the host link 00

*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-Pro­grammer) to the CPU.

For details on PC Setup, refer to the SYSMAC CS1-series Operation Manual
(W339-E1-).

When using the built-in RS-232C port of CS1G/H

Word # Writing Value Settings

160 8000

Host link mode, data length 7 bits,
2 stop bits, even parity

0000 Communication speed: 9600 bps.

161

0007 Communication speed: 19200 bps.

166 0000 Unit #00

When using the peripheral port of CS1G/H

Word # Writing Value Settings

144 8000

Host link mode, data length 7 bits,
2 stop bits, even parity

0000 Communication speed: 9600 bps.

145

0007 Communication speed: 19200 bps.

150 0000 Unit #00

4-1SectionConnecting to the RS-232C Port at the Host

67

Setting the Front Switches

Set the CPU DIP switches to 4 or 5 in accordance with the port NT31/NT31C is
connected to.

DIP switches (inside the battery storage)

• Set SW4 to ON (establishing communication in ac-

cordance with PC Setup) when connecting the
NT31/NT31C to the peripheral port.

• Set SW5 to OFF (establishing communication in ac-

cordance with PC Setup) when connecting the
NT31/NT31C to the RS-232C port.

Peripheral port

This is used mainly for
connection to the
Programming Device.
(This also supports the
RS-232C unit connection.)

RS-232 port

This is used mainly for
connection to the
RS-232C unit.
(This also supports the
CX-Programmer.)

SYSMAC CS1G

PROGRAMMABLE CONTROLLER
CPU4

2

OPEN

OPEN

PERIPHERAL

PORT

BUSY

RUN

ERR/ALM

INH

PRPHL/COMM

MCPWR

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)

Port 1 Port 2

Writi

ng Value

Setti

ngs

DM32000 DM32010 8000

Host link mode, 2 stop bits, even parity, data
length 7 bits

0000 Communication speed 9600 bps.

DM32001

DM32011

0007 Communication speed 19200 bps.

DM32002 DM32012 0000 Transmit delay time 0 ms.

DM32006 DM32016 0000 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.

4-1SectionConnecting to the RS-232C Port at the Host

68

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.

PC Series

CPUs with Built-in

NT Link Function

CPUs Connectable with

Expansion

Communication

Board

(*1)

Connectable

to

C200HS-CPU21-E, -EC
C200HS-CPU23-E
C200HS-CPU31-E
C200HS-CPU33-E

---

C200HS

C200HE-CPU42-(Z)E

C200HE-CPU32-(Z)E
C200HE-CPU42-(Z)E

C200HE (-Z)E

C200HG-CPU43-(Z)E
C200HG-CPU63-(Z)E

C200HG-CPU33-(Z)E
C200HG-CPU43-(Z)E
C200HG-CPU53-(Z)E
C200HG-CPU63-(Z)E

C200HG
(-Z)E

C200HX-CPU44-(Z)E
C200HX-CPU64-(Z)E
X200HX-CPU65-ZE
C200HX-CPU85-ZE

C200HX-CPU34-(Z)E
C200HX-CPU44-(Z)E
C200HX-CPU54-(Z)E
C200HX-CPU64-(Z)E
C200HX-CPU65-ZE
C200HX-CPU85-ZE

C200HX (-Z)E

C series

CPM1-10CDR-

(*2)

CPM1-20CDR-

(*2)

CPM1-30CDR-

(*2)

CPM1A-10CD-

(*2)

CPM1A-20CD-

(*2)

CPM1A-30CD-

(*2)

CPM1A-40CD-

(*2)

---

CPM1

CPM2A-30CD-
CPM2A-40CD-
CPM2A-60CD-

--­CPM2A

CPM2C-10-

(*3)

CPM2C-20-

(*3)

--­CPM2C

CQM1-CPU41-EV1
CQM1-CPU42-EV1
CQM1-CPU43-EV1
CQM1-CPU44-EV1
CQM1-CPU45-EV1

---

CQM1

CQM1H-CPU21-E
CQM1H-CPU51-E
CQM1H-CPU61-E

CQM1H-CPU51

(*4)

CQM1H-CPU61

(*4)

CQM1H

CV500-CPU01-EV1 --- CV500

CV series

(*5)

CV1000-CPU01-EV1 --- CV1000

CV2000-CPU01-EV1 --- CV2000

CVM1 series

(*5)

CVM1-CPU01-EV2
CVM1-CPU11-EV2
CVM1-CPU21-EV2

--­CVM1

CompoBus/S
master
control unit

SRM1-C02-V1

--­SRM1

*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 -EV 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).

4-1SectionConnecting to the RS-232C Port at the Host

69

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

Port A of C200HX/HG/HE(-Z)E

(*1)

Port 1 of CQM1H

(*2)

DM6555

4000

Use NT link
(1:1)

Port B of C200HX/HG/HE(-Z)E

(*1)

DM6550

CPM1 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 fol­lowing 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

RS-232C port (D-Sub 9-pin) of CS1W-CN118 Built-in RS-232C port settings

Peripheral port of CS1W-CN114 Peripheral port settings

Peripheral port

RS-232C port
(D-Sub 9-pin, female)

CPM2C-CN111

CPM2C

RS-232C port
(D-Sub 9-pin, female)

CS1W-CN118

CPM2C

Peripheral port

CS1W-CN114

CPM2C

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

4-1SectionConnecting to the RS-232C Port at the Host

70

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.

 Connecting PT to peripheral port
 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

 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.

CPM1­CIF01

Set the mode setting switch to NT (lower position).

4-1SectionConnecting to the RS-232C Port at the Host

71

Connecting to CVM1/CV Series (-EV)

Set the DIP switches on the front panel as follows.

OFF

ON

1

2

3

4

5

6

ON

I/O port selection (selector switch)
Set this to RS-232C.

Set SW3 to use NT link
(ON, right side).

DIP switch setting (SW3)

When using the CVM1/CV series, CPU execution processing (execution control

2) in the PC Setup must be set to Simultaneous processing.

4-1SectionConnecting to the RS-232C Port at the Host

72

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 us­ing a CS1W-SCU21 Serial Communications Unit.

Check the model and series of the PC as well as the model of Serial Commu­nications 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.

PC Series

CPUs with Built-in

NT Link Function

CPUs Connectable with
Communications Board

or Unit

(*1)

Connectable

to

CS1 series

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

C200HE-CPU42-(Z)E

C200HE-CPU32-(Z)E

(*2)

C200HE-CPU42-(Z)E

(*2)

C200HE
(-Z)E

C200HG-CPU43-(Z)E
C200HG-CPU63-(Z)E

C200HG-CPU33-(Z)E

(*2)

C200HG-CPU43-(Z)E

(*2)

C200HG-CPU53-(Z)E

(*2)

C200HG-CPU63-(Z)E

(*2)

C200HG
(-Z)E

C series

C200HX-CPU44-(Z)E
C200HX-CPU64-(Z)E
C200HX-CPU65-ZE
C200HX-CPU85-ZE

C200HX-CPU34-(Z)E

(*2)

C200HX-CPU44-(Z)E

(*2)

C200HX-CPU54-(Z)E

(*2)

C200HX-CPU64-(Z)E

(*2)

C200HX-CPU65-ZE

(*2)

C200HX-CPU85-ZE

(*2)

C200HX
(-Z)E

---

CQM1H-CPU51

(*3)

CQM1H-CPU61

(*3)

CQM1H

CompoBus/S
Master
Control Unit

SRM1-C02-V2 --- SRM1

*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

4-1SectionConnecting to the RS-232C Port at the Host

73

Device (e.g. SYSMAC support software) in accordance with the host model and
port.

Connection to Word #

Writing

Value

Setting

C200HX/HG/HE(-Z)E, SRM1

Built-in RS-232C port

DM6645

C200HX/HG/HE(-Z)E

Communication Board port A

*1

CQM1H port 1

*2

DM6555

500

Use NT link (1:N)
 = highest unit number of

the connected PTs (1 to 7)

(*3)

C200HX/HG/HE(-Z)E

Communication Board port B

*1

DM6550

()

*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-CPU-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 condi­tions 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 # Writing Value Settings

160 8200 NT link (1:N) mode

161 0000 to 0009

(*1)

Communications baud rate (standard)

166

000

 = The largest model number of the
connected PT (0 – 7)

*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 # Writing Value Settings

144 8200 NT link (1:N) mode

145 0000 to 0009

(*1)

Communications baud rate (standard)

150

000

 = The largest model number of the
connected PT (0 – 7)

4-1SectionConnecting to the RS-232C Port at the Host

74

*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 Con­sole), or transmit the PC Setup made at a Programming Device (CX-Program­mer) to the CPU.
For details on PC Setup, refer to the SYSMAC CS1-series Operation Manual
(W339-E1

-).

Setting the Front Switches

Set the CPU DIP switch to 4 or 5 in accordance with the port NT31/NT31C is
connected to.

Peripheral port

This is used mainly for
connection to the
Programming Device.
(This also supports the
RS-232C unit connection.)

RS-232 port

This is used mainly for
connection to the
RS-232C unit.
(This also supports the
CX-Programmer.)

DIP switches (inside the battery storage)

• Set SW4 to ON (establishing communication in ac-

cordance with PC Setup) when connecting the
NT31/NT31C to the peripheral port.

• Set SW5 to OFF (establishing communication in ac-

cordance with PC Setup) when connecting the
NT31/NT31C to the RS-232C port.

SYSMAC CS1G

PROGRAMMABLE CONTROLLER

CPU4

2

OPEN

OPEN

PERIPHERAL

PORT

BUSY

RUN

ERR/ALM

INH

PRPHL/COMM

MCPWR

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 CX­Programmer) 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)

Port 1 Port 2

Writi

ng Value

Setti

ngs

DM32000 DM32010 8200 NT link (1:N) mode

DM32001 DM32011 0000 to 0009

(*1)

Communications baud rate
(standard)

DM32006 DM32016

000

 = The largest model number of
the connected PT (0 – 7)

*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.

4-1SectionConnecting to the RS-232C Port at the Host

75

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.

Set the unit number to 0 through F so
that it will not overlap with the numbers
used in other units.

SCU21

RUN
ERC
SD1
RD1

RDY
ERH
SD2
RD2

No.

F

E

D

C

B

A

9

8

7

6

5

4

3

2

1

0

UNIT

Allocation DM Area Settings for CPU

Setting is written from the Programming Device (a Programming Console or CX­Programmer) 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)

Port 1 Port 2

Writi

ng Value

Setti

ngs

m m+10 8200 NT link (1:N) mode

m+1 m+11 0000 to 0009

(*1)

Communications baud rate
(standard)

m+6 m+16

000

 = The largest model number of
the connected PT (0 - 7)

*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 high­speed 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

CS1G-CPU42/43/44/45-EV1

(*1)

CS1H-CPU63/64/65/66/67-EV1

(*1)

CS1G-CPU42/43/44/45-E(V1)

(*2)

CS1H-CPU63/64/65/66/67-E(V1)

(*2)

*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.

4-1SectionConnecting to the RS-232C Port at the Host

76

Settings at the Host

The Settings required for each Unit are described below.

• Connecting CS1-series CPU Units

CS1 series CPU type : CS1G/H-CPU-EV1

PC Setup

When connecting to a CS1 series CPU, set the following communication condi­tions 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 # Writing Value Settings

160 8200 NT link (1:N) mode

161 000A Communications baud rate (high-speed)

166

000

 = The largest model number of the
connected PT (0 – 7)

When using the peripheral port of CS1G/H

Word # Writing Value Settings

144 8200 NT link (1:N) mode

145 000A Communications baud rate (high-speed)

150

000

 = The largest model number of the
connected PT (0 – 7)

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 Con­sole), or transmit the PC Setup made at a Programming Device (CX-Program­mer) to the CPU.
For details on PC Setup, refer to the SYSMAC CS1-series Operation Manual
(W339-E1

-).

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.

4-1SectionConnecting to the RS-232C Port at the Host

77

Setting the Front Switches

Set the CPU DIP switch to 4 or 5 in accordance with the port NT31/NT31C is
connected to.

Peripheral port

This is used mainly for
connection to the
Programming Device.
(This also supports
connection of RS-232C
devices.)

RS-232 port

This is used mainly for
connection of RS-232C
devices.
(This also supports the
connection of
CX-Programmer.)

DIP switches (inside the battery storage)

• Set SW4 to ON (establishing communication in ac-

cordance with PC Setup) when connecting the
NT31/NT31C to the peripheral port.

• Set SW5 to OFF (establishing communication in ac-

cordance with PC Setup) when connecting the
NT31/NT31C to the RS-232C port.

SYSMAC CS1G

PROGRAMMABLE CONTROLLER

CPU4

2

OPEN

OPEN

PERIPHERAL

PORT

BUSY

RUN

ERR/ALM

INH

PRPHL/COMM

MCPWR

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 CX­Programmer) 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

Port 1 Port 2

Writing

Value

Setti

ngs

DM32000 DM32010 8200 NT link (1:N) mode

DM32001 DM32011 000A Communications baud rate (high-speed)

DM32006 DM32016

000

 = The largest model number of the
connected PT (0 – 7)

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.

4-1SectionConnecting to the RS-232C Port at the Host

78

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.

Set the unit number to 0 through F so
that it will not overlap with the numbers
used in other units.

SCU21

RUN
ERC
SD1
RD1

RDY
ERH
SD2
RD2

No.

F

E

D

C

B

A

9

8

7

6

5

4

3

2

1

0

UNIT

Allocation DM Area Settings for CPU

Setting is written from the Programming Device (a Programming Console or CX­Programmer) 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

Port 1 Port 2

Writing

Value

Setti

ngs

m m+10 8200 NT link (1:N) mode

m+1 m+11 000A Communications baud rate (high-speed)

m+6 m+16

000

 = The largest model number of the
connected PT (0 - 7)

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 follow­ing table. Set the same communication conditions at the NT31/NT31C by the
memory switch. (page 165).

Item Settings at the host

Input/Output port RS-232C

Communication speed 1200, 2400, 4800, 9600, 19200, 38400 bps.

Data bits length 7 bits, 8 bits

Stop bits length 1 bits, 2 bits

Parity None, even, odd

Flow control None, RS/CS, XON/XOFF

When Using the Memory
Link Method

4-1SectionConnecting to the RS-232C Port at the Host

79

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.

Serial port A (RS-232C, 9-pin type)
Serial port B (RS-232C, 25-pin type)

Host link unit/CPU

NT31/NT31C

SYSMAC
C-series PC,
CVM1/CV-series PC,
PLC, SRM1

9-pin connector
or 25-pin
connector

9-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

Connector

XM2A-0901

9-pin
Made by OMRON

CS1-series CS1G/CS1H

C-series CQM1,
C200HS,

C200HX/HG/HE(-Z)E,

CVM1/CV-series CPUs

CV500-LK201

Connector

XM24-2501

25-pin
Made by OMRON

C500-LK203
CV500-LK201
C200H-LK201-EV1

DB-25P

25-pin
Made by JAE

3G2A5-LK201-EV1
3G2A6-LK201-EV1

XM2S-0911

9-pin
Made by OMRON

C-series CQM1,
C200HS,

C200HX/HG/HE-(Z)E,

CVM1/CV-series CPUs

CV500-LK201

Connector

XM2S-0913

9-pin
Made by OMRON

Connector

hood

XM2S-0911-E

9-pin
Made by OMRON

CS1-series CS1G/CS1H

XM2S-2511

25-pin
Made by OMRON

C500-LK203
CV500-LK201
C200H-LK201-EV1

DB-C2-J9

25-pin
Made by JAE

3G2A5-LK201-EV1
3G2A6-LK201-EV1

AWG28 5P
IFVV-SB

Multi-core shielded cable
Made by Fujikura, Ltd.

Cable

CO-MA-VV-SB
5P 28AWG

Multi-core shielded cable
Made by Hitachi Cable,

Ltd.

Note After connecting a communication cable, always secure it with the screws.

4-1SectionConnecting to the RS-232C Port at the Host

80

OMRON Cables with Connectors

When a connection is made at serial port A in other than the memory link meth­od, OMRON cables with connectors shown below are available.

Model Cable Length Connector Specification

XW2Z-200S 2 m

XW2Z-500S 5 m

9-pin ⇔ 25 pin

XW2Z-200T 2 m

XW2Z-500T 5 m

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 avail­able.

Model Cable Length Connector Specification

CV500-CN228 2 m 9-pin ⇔ 25 pin
XW2Z-S002 2 m 9-pin ⇔ 9 pin

When a connection is made at serial port B in other than the memory link meth­od, OMRON cables with connectors shown are available.

Model Cable Length Connector Specification

XW2Z-200P 2 m

XW2Z-500P 5 m

25-pin ⇔ 25 pin

XW2Z-200S 2 m

XW2Z-500S 5 m

25-pin ⇔ 9-pin

Note The cable’s tensile load is 30 N. Do not subject it to loads greater than this.

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 (communica­tion port 2). When using communication port 2, refer to Wiring for Other Connec-
tions (Other Than the Memory Link Method) (page81).

Wiring for a Host Link
Unit (25-pin) Connection

4-1SectionConnecting to the RS-232C Port at the Host

81

Serial Port A

1

6

5

9

*

NT31/NT31C

114

13 25

FG

+5V

CS

RS

RD

SD

5G

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

–

–

–

–

FG

5G

CS

RS

RD

SD

ER

–

–

–

–

–

PC (host link unit)

(25-pin type)

(9-pin type)

RS-232C
interface

RS-232C
interface

Abbreviation

Pin

number

Abbreviation

Pin

number
Connector
hood

Shielding wire

* 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

–

114

13 25

114

13 25

*

FG

CS

RS

RD

SD

TRM

Abbreviation

–

–

SG

–

–

SDA (–)

RDA (–)

–

RDB (+)

SDB (+)

–

–

–

RSB (+)

RSA (–)

1

2

3

4

5

6

7

8

9

Pin

number

Connector
hood

10

11

12

13

14

15

16

–

23

24

25

–

Abbreviation

Pin

number

1

2

3

4

5

6

7

8

20

–

–

–

–

FG

CS

RS

RD

SD

–

SG

–

–

–

–

ER

NT31/NT31C PC (host link unit)

(25-pin
type)

RS-232C/
422A/485
interface

Shielding wire

RS-232C

interface

(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.

Applicable units :

CV500-LK201 (communication port 2)
CS1W-SCU21
CPM1-10CDR- CPM1-20CDR-
CPM1A-10CD- CPM1A-20CD-
CPM1A-30CD- CPM1A-40CD-
CPM2A-30CD- CPM2A-40CD-
CPM2A-60CD-
CPM2C-10- CPM2C-20-
CQM1-CPU21-E
CQM1-CPU41-EV1 CQM1-CPU42-EV1
CQM1-CPU43-EV1 CQM1-CPU44-EV1
CQM1H-CPU11 CQM1H-CPU21
CQM1H-CPU51 CQM1H-CPU61
CS1G-CPU42-E(V1) CS1G-CPU43-E(V1)

Wiring for Other
Connections

4-1SectionConnecting to the RS-232C Port at the Host

82

CS1G-CPU44-E(V1) CS1G-CPU45-E(V1)
CS1H-CPU63-E(V1) CS1H-CPU64-E(V1)
CS1H-CPU65-E(V1) CS1H-CPU66-E(V1)
CS1H-CUP67-E(V1)
C200HS-CPU21-E, -EC C200HS-CPU23-E
C200HS-CPU31-E C200HS-CPU33-E
C200HE-CPU32-(Z)E C200HE-CPU42-(Z)E
C200HG-CPU33-(Z)E C200HG-CPU43-(Z)E
C200HG-CPU53-(Z)E C200HG-CPU63-(Z)E
C200HX-CPU34-(Z)E C200HX-CPU44-(Z)E
C200HX-CPU54-(Z)E C200HX-CPU64-(Z)E
C200HX-CPU65-ZE C200HX-CPU85-ZE
CV500-CPU01-EV1 CV1000-CPU01-EV1
CV2000-CPU01-EV1
CVM1-CPU01-EV2 CVM1-CPU11-EV2
CVM1-CPU21-EV2
SRM1-C02-V2

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 -EV cannot be connected by
any connection method.

Serial Port A

1

6

5

9

1

6

5

9

FG

+5V

CS

RS

RD

SD

SG

1

2

3

4

5

6

7

8

9

Pin

number
Connector
hood

RS-232C
interface

Abbreviation

1

2

3

4

5

6

7

8

9

Pin

number

–

–

–

FG

+5V

CS

RS

RD

SD

SG

DSR

ER

NT31/NT31C PC (Host link unit)

(9-pin type)

Shielding wire

(9-pin type)

RS-232C
interface

Abbreviation

*

4-1SectionConnecting to the RS-232C Port at the Host

83

Serial Port B

1

6

5

9

114

13 25

*

NT31/NT31C PC (Host link unit)

FG

CS

RS

RD

SD

TRM

–

–

SG

–

–

SDA (–)

RDA (–)

–

RDB (+)

SDB (+)

–

–

–

RSB (+)

RSA (–)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

–

23

24

25

–

1

2

3

4

5

6

7

8

9

(9-pin type)

Abbreviation

FG

CS

RS

RD

SD

–

–

SG

–

–

(25-pin type)

Shielding wire

* In case 0V is set for those unit which has CTS setting selector, it is not necessary

to shorten between RS and CS.

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.

(9-pin type)

Shielding wire

1

6

5

9

Abbreviation

FG

−

SD

RD

RS

CS

+5V

−

−

SG

Pin number

Connector

hood

1

2

3

4

5

6

7

8

9

RS-232C

connector

RS-232C

connector

Abbreviation

Connector

hood

SD

RD

RS

CS

SG

NT31/NT31C

PC (Host link unit)

Wiring for a Memory Link
Connection

4-1SectionConnecting to the RS-232C Port at the Host

84

Serial Port B

Prepare the adapter cable while referring to the following diagram.

114

13 25

NT31/NT31C

FG

CS

RS

RD

SD

TRM

–

–

SG

–

–

SDA (–)

RDA (–)

–

RDB (+)

SDB (+)

–

–

–

RSB (+)

RSA (–)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

–

23

24

25

–

(25-pin type)

RS-232C

/422A/485

connector

Abbreviation

Pin number

Connector

hood

Shielding wire

RS-232C

connector

Abbreviation

Connector

hood

SD

RD

RS

CS

SG

PC (Host link unit)

85

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 86. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-1 The Type of Host and Settings 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-2 1:1 Connection between RS-422A/485 at the PT and RS-232C at the Host 88. . . . .

5-1-3 1:N Connection between RS-422A/485 at the PT and RS-232C at the Host 92. . . .

5-1-4 Recommended Connectors, Cables, and Crimp Terminals 97. . . . . . . . . . . . . . . . . .

5-1-5 Setting the Terminal Resistance for RS-422A/485 Communications 99. . . . . . . . . .

5-2 Connecting to the Host’s RS-422A/485 Port 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-1 Host Types and Settings 101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-2 Direct Connection between RS-422A Ports at Both Units 117. . . . . . . . . . . . . . . . . .

5-2-3 Direct Connection between RS-485 Ports at Both Units 121. . . . . . . . . . . . . . . . . . . .

5-2-4 1:N Connection among RS-422A Ports 122. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-5 1:N Connection among RS-485 Ports 125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-6 Recommended Connectors, Cables and Crimp Terminals 127. . . . . . . . . . . . . . . . . .

5-2-7 Setting the Terminal Resistance for RS-422A/485 Communications 128. . . . . . . . . .

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

86

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, re­fer to the PC Connection Manual (V042-E1-) or NT31/631 Multi Vendor Con-
nection Manual (V060-E1-).

• 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 con­vertor unit (page 88).

When this method is used, the cable length can be extended up to 500 m.

PT

RS-232C/RS-422A
convertor unit

Host

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 conver­tor 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.

PT

RS-232C/RS-422A
convertor unit

Host

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) meth­od.

PT

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).

PT

Host

RS-232C/RS422A
convertor unit

RS-485 cable
(max. total length
500 m)

RS-232C
cable
(max. 2 m)

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

87

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.

NT31

NT31C

PC

PC

NT31

PC

NT31C NT31CNT31 NT31 NT31 NT31 NT31

(At termination)

Relay terminal block Relay terminal block

Max. 2 m

(Not at
termination)

(Not at
termination)

(Not at
termination)

(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 Reference

Host link Host Link Method (page 54)

NT link (1:1) NT Link (1:1) method (page 67)

NT link (1:N) 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)

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

88

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 fol­lows.

12345 6

ON

om on

R

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)

Example: the terminal resistor is active,

RS-422A, NT link (1:N).

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.

NT31/NT31C

Serial port B
(RS-422A/485,
25-pin type)

Host link unit/CPU

SYSMAC
C-series PC,
CVM1/CV-series PC, SRM1

25-pin connector

RS-232C/RS-422A
convertor unit
(NT-AL001)

9-pin connector or
25-pin connector

RS-422A/485 cable
(max. length: 500 m)

RS-422A terminal block

9-pin connector

RS-232C cable
with connectors

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.

Settings at the
RS-232C/RS-422A
Convertor Unit
(NT-AL001)

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

89

Connecting an NT31/NT31C and NT-AL001 (RS-422A)

RS-422A

NT31/NT31C

Host

NT-AL001

NT31/NT31C side

1

14

13 25

7

5

3

1

NT-AL001 side

Shielding wire

(25-pin type)

Abbreviation

FG

−

SD

RD

RS

CS

−

SG

−

TRM

RDB (+)

SDB (+)

−

−

−

SDA (−)

RDA (−)

−

−

RSB (+)

RSA (−)

−

Pin number

Connector

hood

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

−

23

24

25

Pin number

6

5

4

3

1

Abbreviation

RDA

RDB

SDA

SDB

Functional

ground

8

6

4

2

RS-232C/

422A/485

connector

RS-422A

terminal

block

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)

RS-485

NT31/NT31C

Host

NT-AL001

NT31/NT31C side

1

14

13 25

7

5

3

1

8

6

4

2

NT-AL001 side

Shielding wire

(25-pin type)

Abbreviation

FG

−

SD

RD

RS

CS

−

SG

−

TRM

RDB (+)

SDB (+)

−

−

−

SDA (−)

RDA (−)

−

−

RSB (+)

RSA (−)

−

Pin number

Connector

hood

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

−

23

24

25

Pin number

6

5

4

3

1

Abbreviation

RDA

RDB

SDA

SDB

Functional

ground

RS-232C/

422A/485

connector

RS-422A

terminal

block

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.