Omron CP1L CPU, CP1H CPU, CP series PROGRAMMING MANUAL

Cat. No. W451-E1-03

SYSMAC CP Series
CP1H-X40D@-@, CP1H-XA40D@-@,
CP1H-Y20DT-D
CP1L-L14D@-@, CP1L-L20D@-@,
CP1L-M30D@-@, CP1L-M40D@-@

CP1H/CP1L CPU Unit

PROGRAMMING MANUAL

SYSMAC CP Series

CP1H-X40D@-@, CP1H-XA40D@-@,
CP1H-Y20DT-D

CP1H CPU Units

CP1L-L14D@-@, CP1L-L20D@-@,
CP1L-M30D@-@, CP1L-M40D@-@

CP1L CPU Units

Programming Manual

Revised May 2007

iv

Notice:

r
f

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. Additionally, there may be severe property damage.

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

serious injury. Additionally, there may be severe property damage.

!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 CX-Programmer displays to mean Programmable Controller.

Visual Aids

 OMRON, 2005

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

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.

v

Unit Versions of CP-series CPU Units

Unit Versions A “unit version” has been introduced to manage CPU Units in the CP Series

according to differences in functionality accompanying Unit upgrades.

Notation of Unit Versions
on Products

Confirming Unit Versions
with Support Software

The unit version is given to the right of the lot number on the nameplate of the
products for which unit versions are being managed, as shown below.

Product nameplate

CP1H-XA40DR-A

CPU UNIT

Lot No. 28705 0000 Ver.1.0

OMRON Corporation MADE IN JAPAN

Lot No.

The methods used to confirm the unit version for the CP-series CP1H and
CP1L CPU Units are somewhat different.

CP1H CPU Units

CX-Programmer version 6.1 or higher can be used to confirm the unit version
using one of the following two methods. (See note.)

• Using the PLC Information

• Using the Unit Manufacturing Information

Unit version
(Example for Unit version 1.0)

CP-series CPU Unit

Note CX-Programmer versions lower than version 6.1 cannot be used to confirm

unit versions for CP1L CPU Units.

CP1L CPU Units

CX-Programmer version 7.1 or higher can be used to confirm the unit version
using the PLC Information. (See note.) The Unit Manufacturing Informa-

tion cannot be used.

Note CX-Programmer versions lower than version 7.1 cannot be used to confirm

unit versions for CP1L CPU Units.

vi

■ PLC Information

Procedure When the Device Type and CPU Type Are Known

1,2,3... 1. If you know the device type and CPU type, select them in the Change PLC

Dialog Box, go online, and select PLC - Edit - Information from the
menus. The following Change PLC Dialog Box will be displayed.

Example for CP1H

Example for CP1L

vii

2. Click the Settings Button and, when the Device Type Settings Dialog Box
is displayed, select the CPU type.

Example for CP1H

Example for CP1L

viii

3. Go online and select PLC - Edit - Information

The PLC Information Dialog Box will be displayed.

Example for the CP1H

▲

Unit version

ix

Example for the CP1L

▲

Unit version

Use the above display to confirm the unit version of the CPU Unit.

Procedure When the Device Type and CPU Type Are Not Known

This procedure is possible only when connected directly to the CPU Unit with
a serial connection.

If you don't know the device type and CPU type but are connected directly to
the CPU Unit on a serial line, select PLC - Auto Online to go online, and then
select PLC - Edit - Information from the menus.

The PLC Information Dialog Box will be displayed and can be used to confirm
the unit version of the CPU Unit.

x

▲

Unit version

■ Unit Manufacturing Information (CP1H CPU Units Only)

1,2,3... 1. In the IO Table Window, right-click and select Unit Manufacturing infor-

mation - CPU Unit.

xi

2. The following Unit Manufacturing information Dialog Box will be displayed.

Unit version

▲

Using the Unit Version
Labels

Use the above display to confirm the unit version of the CPU Unit connected
online.

The following unit version labels are provided with the CPU Unit.

Ver.

Ver.

Ver.

1.0

Ver.

1.0

These Labels can be
used to manage
differences in the
available functions
among the Units.
Place the appropriate
label on the front of
the Unit to show what
Unit version is actually
being used.

xii

These labels can be attached to the front of previous CPU Units to differenti­ate between CPU Units of different unit versions.

TABLE OF CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

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

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

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

4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi

5 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxvii

6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

SECTION 1

Programming Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1-1 Programming Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1-2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

1-3 Checking Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

1-4 Introducing Function Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

SECTION 2

Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

2-1 Programming with Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

2-2 Using Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2-3 Interrupt Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2-4 CX-Programmer Operations for Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

SECTION 3

Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

3-1 Notation and Layout of Instruction Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

3-2 Sequence Input Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

3-3 Sequence Output Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

3-4 Sequence Control Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

3-5 Timer and Counter Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

3-6 Comparison Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

3-7 Data Movement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

3-8 Data Shift Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

3-9 Increment/Decrement Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320

3-10 Symbol Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .336

3-11 Conversion Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389

3-12 Logic Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436

3-13 Special Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 451

3-14 Floating-point Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472

3-15 Double-precision Floating-point Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525

3-16 Table Data Processing Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 567

3-17 Data Control Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 615

xiii

TABLE OF CONTENTS

3-18 Subroutines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 668

3-19 Interrupt Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692

3-20 High-speed Counter/Pulse Output Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 705

3-21 Step Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 751

3-22 Basic I/O Unit Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 769

3-23 Serial Communications Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805

3-24 Network Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 844

3-25 Display Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 911

3-26 Clock Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 918

3-27 Debugging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 932

3-28 Failure Diagnosis Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .936

3-29 Other Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 961

3-30 Block Programming Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 975

3-31 Text String Processing Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1008

3-32 Task Control Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1040

3-33 Model Conversion Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1047

SECTION 4

Instruction Execution Times and Number of Steps. . . . . . . 1065

4-1 Instruction Execution Times and Number of Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1066

4-2 Function Block Instance Execution Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1088

Appendices

A Instruction Classifications by Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1091

B List of Instructions by Function Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1099

C Alphabetical List of Instructions by Mnemonic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1115

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1129

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1139

xiv

About this Manual:

This manual describes programming the CP-series Programmable Controllers (PLCs) and includes
the sections described below. The CP1H and CP1L are advanced package-type PLCs based on
OMRON’s advanced control technologies and vast experience in automated control.

Please read this manual carefully and be sure you understand the information provided before
attempting to install or operate a CP1H or CP1L PLC. Be sure to read the precautions provided in the
following section.

Definition of the CP Series

The CP Series is centered around the CP1H and CP1L CPU Units and is designed with the same
basic architecture as the CS and CJ Series. The Special I/O Units and CPU Bus Units of the CJ Series
can thus be used with the CP1H CPU Units. CJ-series Basic I/O Units, however, cannot be used.
Always use CPM1A Expansion Units or CPM1A Expansion I/O Units when expanding the I/O capacity
of CP1H or CP1L PLCs.

I/O words are allocated in the same way as the CPM1A/CPM2A PLCs, i.e., using fixed areas for inputs
and outputs.

CS/CJ/CP Series

CS Series

CS1-H CPU Units

CS1H-CPU@@H
CS1G-CPU@@H

CS1 CPU Units

CS1H-CPU@@ (-V1)
CS1G-CPU@@ (-V1)

CS1D CPU Units

CS1D CPU Units for
Duplex-CPU System

CS1D-CPU

CS1D CPU Units for
Single-CPU System

CS1D-CPU S

CS1D Process CPU Units

CS1D-CPU

CS-series Basic I/O Units

CS-series Special I/O Units

CS-series CPU Bus Units

CS-series Power Supply Units

Note: Products specifically for the CS1D

Series are required to use CS1D
CPU Units.

@@H

@@

@@P

CJ Series

CJ1-H CPU Units

CJ1H-CPU@@H
CJ1G-CPU@@H
CJ1G -CPU@@P

(Loop CPU Unit)

CJ1M CPU Unit

CJ1M-CPU@@

CJ1 CPU Unit

CJ1G-CPU@@

CJ-series Basic I/O Units

CJ-series Special I/O Units

CJ-series CPU Bus Units

CJ-series Power Supply Units

CP Series

CP1H CPU Units

CP1H-X@@@@-@
CP1H-XA@@@@-@
CP1H-Y@@@@-@

CP1L CPU Unit

CP1L-L14D@-@
CP1L-L20D@-@
CP1L-M30D@-@
CP1L-M40D@-@

CP-series Expansion I/O Units

CP-series Expansion Units

CPM1A Expansion I/O Units

CPM1A Expansion Units

CJ-series Special I/O Units (See note.)

CJ-series CPU Bus Units (See note.)

Note: Can be used with only a CP1H

CPU Unit.

xv

Precautions provides general precautions for using the Programmable Controller and related devices.

Section 1 describes the basic concepts required to program the CP1H.

Section 2 describes the operation of tasks and how to use tasks in programming.

Section 3 describes each of the instructions that can be used in programming CP-series PLCs.

Instructions are described in order of function.

Section 4 lists the execution times and number of steps for all instructions supported by the CP1H
PLCs, and describes the execution times for function block instances.

The Appendices provide lists of the programming instructions in order of function and in order of func­tion number.

xvi

Related Manuals

The following manuals are used for the CP-series CPU Units. Refer to these manuals as required.

Cat. No. Model numbers Manual name Description

W451 CP1H-X40D@-@

CP1H-XA40D@-@
CP1H-Y20DT-D
CP1L-L14D@-@
CP1L-L20D@-@
CP1L-M30D@-@
CP1L-M40D@-@

W450 CP1H-X40D@-@

CP1H-XA40D@-@
CP1H-Y20DT-D

W462 CP1L-L14D@-@

CP1L-L20D@-@
CP1L-M30D@-@
CP1L-M40D@-@

W461 CP1L-L14D@-@

CP1L-L20D@-@
CP1L-M30D@-@
CP1L-M40D@-@

W342 CS1G/H-CPU@@H

CS1G/H-CPU@@-V1
CS1D-CPU@@H
CS1D-CPU@@S
CS1W-SCU21
CS1W-SCB21-V1/41-V1
CJ1G/H-CPU@@H
CJ1G-CPU@@P
CP1H-CPU@@
CJ1G-CPU@@
CJ1W-SCU21-V1/41-V1

W446 WS02-CXPC1-E-V70 SYSMAC CX-Pro-

W447 WS02-CXPC1-E-V70 SYSMAC CX-Pro-

W444 CXONE-AL@@C-E CX-One FA Inte-

SYSMAC CP Series
CP1H and CP1L CPU
Unit Programming
Manual

(This manual)

SYSMAC CP Series
CP1H CPU Unit
Operation Manual

SYSMAC CP Series
CP1L CPU Unit Oper­ation Manual

SYSMAC CP Series
CP1L Introduction
Manual

SYSMAC CS/CJ­series Communica­tions Commands Ref­erence Manual

grammer
Ver. 7.0 Operation
Manual

grammer Ver. 7.0
Operation Manual
Function Blocks

grated Tool Package
Setup Manual

Provides the following information on the CP Series:

• Programming instructions

• Programming methods

•Tasks

• File memory

• Functions
Use this manual together with the CP Series CP1H

CPU Units Operation Manual (W450) and CP
Series CP1L CPU Units Operation Manual (W462)

Provide the following information on the CP Series:

• Overview, design, installation, maintenance, and
other basic specifications

•Features

• System configuration

• Mounting and wiring

• I/O memory allocation

• Troubleshooting

Use this manual together with the CP1H Program-
mable Controllers Programming Manual (W451).

Provides basic setup information for CP1L PLCs,
including the following.

• Basic configuration and part names

• Mounting and wiring procedures

• Programming, program transfer, and debugging
with the CX-Programmer

• Application programming examples using the
CP1L

Describes commands addressed to CS-series, and
CJ-series CPU Units, including C-mode commands
and FINS commands.

Note This manual describes on commands

address to CPU Units regardless of the com­munications path. (CPU Unit serial ports,
Serial Communications Unit/Board ports, and
Communications Unit ports can be used.)
Refer to the relevant operation manuals for
information on commands addresses to Spe­cial I/O Units and CPU Bus Units.

Provides information on installing and operating the
CX-Programmer for all functions except for function
blocks.

Provides specifications and operating procedures
for function blocks. Function blocks can be used
with CX-Programmer Ver. 6.1 or higher and either a
CS1-H/CJ1-H CPU Unit with a unit version of 3.0 or
a CP1H CPU Unit. Refer to W446 for operating pro­cedures for functions other than function blocks.

Provides an overview of the CX-One FA Integrated
Tool and installation procedures.

xvii

Cat. No. Model numbers Manual name Description

W445 CXONE-AL@@C-E CX-Integrator Opera-

tion Manual

W344 WS02-PSTC1-E CX-Protocol Opera-

tion Manual

Describes CX-Integrator operating procedures and
provides information on network configuration (data
links, routing tables, Communications Units setup,
etc.

Provides operating procedures for creating protocol
macros (i.e., communications sequences) with the
CX-Protocol and other information on protocol mac­ros.

The CX-Protocol is required to create protocol mac­ros for user-specific serial communications or to
customize the standard system protocols.

xviii

Read and Understand this Manual

Please read and understand this manual before using the product. Please consult your OMRON
representative if you have any questions or comments.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a
period of one year (or other period if specified) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON­INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.

LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which
liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS
REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS
WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

xix

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer's application or use of the products.

At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses
listed may be suitable for the products:

• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or
uses not described in this manual.

• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.

• Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED
FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

PROGRAMMABLE PRODUCTS

OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

xx

Disclaimers

CHANGE IN SPECIFICATIONS

Product specifications and accessories may be changed at any time based on improvements and other
reasons.

It is our practice to change model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be changed
without any notice. When in doubt, special model numbers may be assigned to fix or establish key
specifications for your application on your request. Please consult with your OMRON representative at any
time to confirm actual specifications of purchased products.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.

PERFORMANCE DATA

Performance data given in this manual is provided as a guide for the user in determining suitability and does
not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must
correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and
Limitations of Liability.

ERRORS AND OMISSIONS

The information in this manual has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

xxi

xxii

PRECAUTIONS

This section provides general precautions for using the CP-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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

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

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

4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi

5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvii

6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

6-1 Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

6-2 Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

6-3 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

6-4 Relay Output Noise Reduction Methods . . . . . . . . . . . . . . . . . . . . . xxxi

6-5 Conditions for Meeting EMC Directives when Using CP1,

CP-series, or CPM1A Relay Expansion I/O Units. . . . . . . . . . . . . . xxxii

xxiii

Intended Audience 1

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 installing FA systems.

• Personnel in charge of designing 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 programming and operating the Unit. Be
sure to read this manual before attempting to use the Unit and keep this man­ual close at hand for reference during operation.

!WARNING It is extremely important that a PLC and all PLC Units be used for the speci-

fied 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 a PLC System to the above-mentioned appli­cations.

3 Safety Precautions

!WARNING Do not attempt to take any Unit apart while the power is being supplied. Doing

so may result in electric shock.

!WARNING Do not touch any of the terminals or terminal blocks while the power is being

supplied. Doing so may result in electric shock.

!WARNING Do not attempt to disassemble, repair, or modify any Units. Any attempt to do

so may result in malfunction, fire, or electric shock.

!WARNING Provide safety measures in external circuits (i.e., not in the Programmable

Controller), including the following items, to ensure safety in the system if an
abnormality occurs due to malfunction of the PLC or another external factor
affecting the PLC operation. Not doing so may result in serious accidents.

xxiv

• Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.

Safety Precautions 3

• The PLC will turn OFF all outputs when its self-diagnosis function detects
any error or when a severe failure alarm (FALS) instruction is executed.
As a countermeasure for such errors, external safety measures must be
provided to ensure safety in the system.

• The PLC or outputs may remain ON or OFF due to deposits on or burning
of the output relays, or destruction of the output transistors. As a counter­measure for such problems, external safety measures must be provided
to ensure safety in the system.

• When the 24-V DC output (service power supply to the PLC) is over­loaded or short-circuited, the voltage may drop and result in the outputs
being turned OFF. As a countermeasure for such problems, external
safety measures must be provided to ensure safety in the system.

!WARNING Fail-safe measures must be taken by the customer to ensure safety in the

event of incorrect, missing, or abnormal signals caused by broken signal lines,
momentary power interruptions, or other causes. Not doing so may result in
serious accidents.

!Caution Execute online edit only after confirming that no adverse effects will be

caused by extending the cycle time. Otherwise, the input signals may not be
readable.

!Caution Confirm safety at the destination node before transferring a program to

another node or editing the I/O area. Doing either of these without confirming
safety may result in injury.

!Caution Tighten the screws on the terminal block of the AC Power Supply Unit to the

torque specified in this manual. The loose screws may result in burning or
malfunction.

!Caution Do not touch anywhere near the power supply parts or I/O terminals while the

power is ON, and immediately after turning OFF the power. The hot surface
may cause burn injury.

!Caution Pay careful attention to the polarities (+/-) when wiring the DC power supply. A

wrong connection may cause malfunction of the system.

!Caution When connecting the PLC to a computer or other peripheral device, either

ground the 0 V side of the external power supply or do not ground the external
power supply at all. Otherwise the external power supply may be shorted
depending on the connection methods of the peripheral device. DO NOT
ground the 24 V side of the external power supply, as shown in the following
diagram.

Non-insulated DC power supply

24 V

Twisted-pair
cable

FG

0 V

0 V

CPU Unit

FG

FG

0 V

Peripheral device

FG

xxv

Operating Environment Precautions 4

!Caution After programming (or reprogramming) using the IOWR instruction, confirm

that correct operation is possible with the new ladder program and data before
starting actual operation. Any irregularities may cause the product to stop
operating, resulting in unexpected operation in machinery or equipment.

!Caution The CP-series CPU Units automatically back up the user program and param-

eter data to flash memory when these are written to the CPU Unit. I/O mem­ory (including the DM Area, Counter present values and Completion Flags,
and HR Area), however, is not written to flash memory. The DM Area, Counter
present values and Completion Flags, and HR Area can be held during power
interruptions with a battery. If there is a battery error, the contents of these
areas may not be accurate after a power interruption. If the contents of the
DM Area, Counter present values and Completion Flags, and HR Area are
used to control external outputs, prevent inappropriate outputs from being
made whenever the Battery Error Flag (A402.04) is ON.

4 Operating Environment Precautions

!Caution Do not operate the control system in the following locations:

• Locations subject to direct sunlight.

• Locations subject to temperatures or humidity outside the range specified
in the specifications.

• Locations subject to condensation as the result of severe changes in tem­perature.

• Locations subject to corrosive or flammable gases.

• Locations subject to dust (especially iron dust) or salts.

• Locations subject to exposure to water, oil, or chemicals.

• Locations subject to shock or vibration.

!Caution Take appropriate and sufficient countermeasures when installing systems in

the following locations:

• Locations subject to static electricity or other forms of noise.

• Locations subject to strong electromagnetic fields.

• Locations subject to possible exposure to radioactivity.

• Locations close to power supplies.

!Caution The operating environment of the PLC System can have a large effect on the

longevity and reliability of the system. Improper operating environments can
lead to malfunction, failure, and other unforeseeable problems with the PLC
System. Make sure that the operating environment is within the specified con­ditions at installation and remains within the specified conditions during the
life of the system.

xxvi

Application Precautions 5

5 Application Precautions

Observe the following precautions when using the PLC System.

!WARNING Always heed these precautions. Failure to abide by the following precautions

could lead to serious or possibly fatal injury.

• Always connect to 100
to a ground of 100

• Always turn OFF the power supply to the PLC before attempting any of
the following. Not turning OFF the power supply may result in malfunction
or electric shock.

• Mounting or dismounting Expansion Units or any other Units

• Connecting or removing the Memory Cassette or Option Board

• Setting DIP switches or rotary switches

• Connecting or wiring the cables

• Connecting or disconnecting the connectors

!Caution Failure to abide by the following precautions could lead to faulty operation of

the PLC or the system, or could damage the PLC or PLC Units. Always heed
these precautions.

• Install external breakers and take other safety measures against short-cir­cuiting in external wiring. Insufficient safety measures against short-cir­cuiting may result in burning.

• Mount the Unit only after checking the connectors and terminal blocks
completely.

• Be sure that all the terminal screws and cable connector screws are tight­ened to the torque specified in the relevant manuals. Incorrect tightening
torque may result in malfunction.

• Wire all connections correctly according to instructions in this manual.

• Always use the power supply voltage specified in the operation manuals.
An incorrect voltage may result in malfunction or burning.

• Take appropriate measures to ensure that the specified power with the
rated voltage and frequency is supplied. Be particularly careful in places
where the power supply is unstable. An incorrect power supply may result
in malfunction.

• Leave the label attached to the Unit when wiring. Removing the label may
result in malfunction.

• Remove the label after the completion of wiring to ensure proper heat dis­sipation. Leaving the label attached may result in malfunction.

• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Connection of bare stranded wires may result in
burning.

• Do not apply voltages to the input terminals in excess of the rated input
voltage. Excess voltages may result in burning.

• Do not apply voltages or connect loads to the output terminals in excess
of the maximum switching capacity. Excess voltage or loads may result in
burning.

Ω or less when installing the Units. Not connecting

Ω or less may result in electric shock.

xxvii

Application Precautions 5

• Be sure that the terminal blocks, connectors, Option Boards, and other
items with locking devices are properly locked into place. Improper locking
may result in malfunction.

• Disconnect the functional ground terminal when performing withstand
voltage tests. Not disconnecting the functional ground terminal may result
in burning.

• Wire correctly and double-check all the wiring or the setting switches
before turning ON the power supply. Incorrect wiring may result in burn­ing.

• Check that the DIP switches and data memory (DM) are properly set
before starting operation.

• Check the user program for proper execution before actually running it on
the Unit. Not checking the program may result in an unexpected opera­tion.

• Resume operation only after transferring to the new CPU Unit and/or Spe­cial I/O Units the contents of the DM, HR, and CNT Areas required for
resuming operation. Not doing so may result in an unexpected operation.

• Confirm that no adverse effect will occur in the system before attempting
any of the following. Not doing so may result in an unexpected operation.

• Changing the operating mode of the PLC (including the setting of the
startup operating mode).

• Force-setting/force-resetting any bit in memory.

• Changing the present value of any word or any set value in memory.

• Do not pull on the cables or bend the cables beyond their natural limit.
Doing either of these may break the cables.

• Do not place objects on top of the cables. Doing so may break the cables.

• When replacing parts, be sure to confirm that the rating of a new part is
correct. Not doing so may result in malfunction or burning.

• Before touching the Unit, be sure to first touch a grounded metallic object
in order to discharge any static buildup. Not doing so may result in mal­function or damage.

• Do not touch the Expansion I/O Unit Connecting Cable while the power is
being supplied in order to prevent malfunction due to static electricity.

• Do not turn OFF the power supply to the Unit while data is being trans­ferred.

• When transporting or storing the product, cover the PCBs with electrically
conductive materials to prevent LSIs and ICs from being damaged by
static electricity, and also keep the product within the specified storage
temperature range.

• Do not touch the mounted parts or the rear surface of PCBs because
PCBs have sharp edges such as electrical leads.

• Double-check the pin numbers when assembling and wiring the connec­tors.

• Wire correctly according to specified procedures.

• Do not connect pin 6 (+5V) on the RS-232C Option Board on the CPU
Unit to any external device other than the NT-AL001 or CJ1W-CIF11 Con­version Adapter. The external device and the CPU Unit may be damaged.

• Use the dedicated connecting cables specified in this manual to connect
the Units. Using commercially available RS-232C computer cables may
cause failures in external devices or the CPU Unit.

xxviii

Application Precautions 5

• Check that data link tables and parameters are properly set before start­ing operation. Not doing so may result in unexpected operation. Even if
the tables and parameters are properly set, confirm that no adverse
effects will occur in the system before running or stopping data links.

• Transfer a routing table to the CPU Unit only after confirming that no
adverse effects will be caused by restarting CPU Bus Units, which is auto­matically done to make the new tables effective.

• The user program and parameter area data in the CP-series CPU Unit is
backed up in the built-in flash memory. The BKUP indicator will light on
the front of the CPU Unit when the backup operation is in progress. Do
not turn OFF the power supply to the CPU Unit when the BKUP indicator
is lit. The data will not be backed up if power is turned OFF.

• Do not turn OFF the power supply to the PLC while the Memory Cassette
is being written. Doing so may corrupt the data in the Memory Cassette.
The BKUP indicator will light while the Memory Cassette is being written.
With a CP1H CPU Unit, the 7-segment display will also light to indicate
writing progress. Wait for the BKUP indicator and 7-segment display to go
out before turning OFF the power supply to the PLC.

• Before replacing the battery, supply power to the CPU Unit for at least 5
minutes and then complete battery replacement within 5 minutes of turn
OFF the power supply. Memory data may be corrupted if this precaution is
not observed.

• Always use the following size wire when connecting I/O Units, Special I/O
Units, and CPU Bus Units: AWG22 to AWG18 (0.32 to 0.82 mm

• UL standards required that batteries be replaced only by experienced
technicians. Do not allow unqualified persons to replace batteries. Also,
always follow the replacement procedure provided in the manual.

• Never short-circuit the positive and negative terminals of a battery or
charge, disassemble, heat, or incinerate the battery. Do not subject the
battery to strong shocks or deform the barry by applying pressure. Doing
any of these may result in leakage, rupture, heat generation, or ignition of
the battery. Dispose of any battery that has been dropped on the floor or
otherwise subjected to excessive shock. Batteries that have been sub­jected to shock may leak if they are used.

• Always construct external circuits so that the power to the PLC it turned
ON before the power to the control system is turned ON. If the PLC power
supply is turned ON after the control power supply, temporary errors may
result in control system signals because the output terminals on DC Out­put Units and other Units will momentarily turn ON when power is turned
ON to the PLC.

• Fail-safe measures must be taken by the customer to ensure safety in the
event that outputs from Output Units remain ON as a result of internal cir­cuit failures, which can occur in relays, transistors, and other elements.

• If the I/O Hold Bit is turned ON, the outputs from the PLC will not be
turned OFF and will maintain their previous status when the PLC is
switched from RUN or MONITOR mode to PROGRAM mode. Make sure
that the external loads will not produce dangerous conditions when this
occurs. (When operation stops for a fatal error, including those produced
with the FALS(007) instruction, all outputs from Output Unit will be turned
OFF and only the internal output status will be maintained.)

2

).

xxix

Conformance to EC Directives 6

• Dispose of the product and batteries according to local ordinances as
they apply.
Have qualified specialists properly dispose of used batteries as industrial
waste.

6 Conformance to EC Directives

6-1 Applicable Directives

•EMC Directives

• Low Voltage Directive

6-2 Concepts

EMC Directives

OMRON devices that comply with EC Directives also conform to the related
EMC standards so that they can be more easily built into other devices or the
overall machine. The actual products have been checked for conformity to
EMC standards (see the following note). Whether the products conform to the
standards in the system used by the customer, however, must be checked by
the customer.

EMC-related performance of the OMRON devices that comply with EC Direc­tives will vary depending on the configuration, wiring, and other conditions of
the equipment or control panel on which the OMRON devices are installed.
The customer must, therefore, perform the final check to confirm that devices
and the overall machine conform to EMC standards.

Note The applicable EMC (Electromagnetic Compatibility) standard is EN61131-2.

Low Voltage Directive

Always ensure that devices operating at voltages of 50 to 1,000 V AC and 75
to 1,500 V DC meet the required safety standards for the PLC (EN61131-2).

6-3 Conformance to EC Directives

The CP1H/CP1L PLCs comply with EC Directives. To ensure that the
machine or device in which the CP1H/CP1L PLC is used complies with EC
Directives, the PLC must be installed as follows:

1,2,3... 1. The CP1H/CP1L PLC must be installed within a control panel.

2. You must use reinforced insulation or double insulation for the DC power
supplies used for I/O Units and CPU Units requiring DC power. The output
holding time must be 10 ms minimum for the DC power supply connected
to the power supply terminals on Units requiring DC power.

3. CP1H/CP1L PLCs complying with EC Directives also conform to
EN61131-2. Radiated emission characteristics (10-m regulations) may
vary depending on the configuration of the control panel used, other devic­es connected to the control panel, wiring, and other conditions. You must
therefore confirm that the overall machine or equipment complies with EC
Directives.

xxx

Conformance to EC Directives 6

6-4 Relay Output Noise Reduction Methods

The CP1H/CP1L PLCs conforms to the Common Emission Standards
(EN61131-2) of the EMC Directives. However, noise generated by relay out­put switching may not satisfy these Standards. In such a case, a noise filter
must be connected to the load side or other appropriate countermeasures
must be provided external to the PLC.

Countermeasures taken to satisfy the standards vary depending on the
devices on the load side, wiring, configuration of machines, etc. Following are
examples of countermeasures for reducing the generated noise.

Countermeasures

Countermeasures are not required if the frequency of load switching for the
whole system with the PLC included is less than 5 times per minute.

Countermeasures are required if the frequency of load switching for the whole
system with the PLC included is more than 5 times per minute.

Note Refer to EN61131-2 for more details.

Countermeasure Examples

When switching an inductive load, connect an surge protector, diodes, etc., in
parallel with the load or contact as shown below.

Circuit Current Characteristic Required element

CR method

Powe r
supply

AC DC

Yes Yes If the load is a relay or solenoid, there is

C

R

Inductive

load

a time lag between the moment the cir­cuit is opened and the moment the load
is reset.

If the supply voltage is 24 or 48 V, insert
the surge protector in parallel with the
load. If the supply voltage is 100 to
200 V, insert the surge protector
between the contacts.

The capacitance of the capacitor must
be 1 to 0.5 µF per contact current of
1 A and resistance of the resistor must
be 0.5 to 1 Ω per contact voltage of 1 V.
These values, however, vary with the
load and the characteristics of the
relay. Decide these values from experi­ments, and take into consideration that
the capacitance suppresses spark dis­charge when the contacts are sepa­rated and the resistance limits the
current that flows into the load when
the circuit is closed again.

The dielectric strength of the capacitor
must be 200 to 300 V. If the circuit is an
AC circuit, use a capacitor with no
polarity.

xxxi