Omron CJ Series User manual

OPERATION MANUAL
Cat. No. W395-E1-01
CJ-series Built-in I/O
CJ1M-CPU22/CPU23
CJ1M CPU Units

CJ-series Built-in I/O
CJ1M-CPU22/CPU23 CPU Units
Operation Manual
Produced July 2002

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Notice:
OMRON products are manufactured for use according to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to indicate and classify precautions in this manual. Always heed
the information provided with them. Failure to heed precautions can result in injury to people or dam-
age to property.
!DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
!WARNING 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 “PLC” means Programmable Controller. “PC” is used, however, in some Program-
ming Device displays to mean Programmable Controller.
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 opera-
tion of the product.
1,2,3... 1. Indicates lists of one sort or another, such as procedures, checklists, etc.
OMRON, 2002
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, o
r
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission o
f
OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is con-
stantly 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
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
1 Intended Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
2 General Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
5 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv
6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
SECTION 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 Functions Listed by Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
SECTION 2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2-1 Allocations for Built-in CPU Unit Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2-2 Allocations for Built-in CPU Unit Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2-3 Allocations for Origin Search Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SECTION 3
I/O Specifications and Wiring . . . . . . . . . . . . . . . . . . . . . . . . 19
3-1 I/O Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3-3 Wiring Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
SECTION 4
Data Area Allocation and PLC Setup Settings . . . . . . . . . . 51
4-1 Data Area Allocation for Built-in I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4-2 PLC Setup Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4-3 Auxiliary Area Data Allocation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
4-4 Flag Operations during Pulse Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
SECTION 5
Built-in I/O Function Descriptions . . . . . . . . . . . . . . . . . . . . 73
5-1 Built-in Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
5-2 Built-in Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
5-3 Origin Search and Origin Return Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
SECTION 6
Programming Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
6-1 Built-in Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

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TABLE OF CONTENTS
Appendices
A Combinations of Pulse Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
B Using Pulse Instructions in other CPU Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
C Interrupt Response Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

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About this Manual:
This manual describes the installation and operation of the built-in I/O supported by the CJ1M-CPU22
and CJ1M-CPU23 CPU Units and includes the sections described below.
Please read this manual carefully and be sure you understand the information provided before
attempting to install or operate the built-in I/O Be sure to read the precautions provided in the following
section.
Precautions provides general precautions for using the built-in I/O.
Section 1 describes the features and applications of the functions of the built-in I/O.
Section 2 provides an overview of the functions of built-in I/O.
Section 3 provides I/O specifications and wiring instructions for the built-in I/O.
Section 4 describes the allocation of words and bits for usage with the built-in I/O and PLC Setup set-
tings related to built-in I/O.
Section 5 describes the application of built-in I/O in detail.
Section 6 provides examples of programming built-in I/O
The Appendices provides a table shown which pulse control instructions can be used together, a table
of pulse control instruction support in other PLCs, and instruction execution times.

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PRECAUTIONS
This section provides general precautions for using the CJ-series Programmable Controllers (PLCs) and related devices.
The information contained in this section is important for the safe and reliable application of Programmable
Controllers. You must read this section and understand the information contained before attempting to set up or
operate a PLC system.
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
4 Operating Environment Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
6-1 Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
6-2 Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
6-3 Conformance to EC Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
6-4 Relay Output Noise Reduction Methods . . . . . . . . . . . . . . . . . . . . . xix