Omron CJ1M, CJ1G, CJ2M User Manual
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P068-E1-03
Programmable Controller CJ1
Replacement Guide
From CJ1M/CJ1G to CJ2M
CJ1M-CPU
CJ1G-CPU4□(H)
CJ2M-CPU
About this document
This document provides the reference information for replacing CJ1M/CJ1G PLC systems with
CJ2M series PLC.
This document does not include precautions and reminders; please read and understand the
important precautions and reminders described on the manuals of PLCs (both of PLC used in the
existing system and PLC you will use to replace the existing PLC) before attempting to start
operation.
Man.No. Manual
Related Manuals
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REFERENCE MANUAL
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MEMO
Replacement guide from CJ1M/CJ1G to CJ2
Table of Contents
WORK FLOW ..................................................................................................................................... 2
1. PERFORMANCE SPECIFICATIONS .............................................................................................. 3
1.1 CJ1M/CJ2M SPECIFICATIONS COMPARISON .................................................................................................. 3
1.2 CJ1G/CJ2M SPECIFICATIONS COMPARISON ................................................................................................... 4
2. SYSTEM CONFIGURATIONS ........................................................................................................ 5
2.1 CJ1M/CJ1G/CJ2M SYSTEM COMFIGURATION COMPARISON ......................................................................... 5
3. MEMORY AREA ............................................................................................................................. 6
3.1 CJ1M/CJ1G/CJ2M MEMORY AREA COMPARISON .......................................................................................... 6
4. EXAMPLE OF CONVERTING LADDER PROGRAM BY CX-PROGRAMMER .............................. 8
APPENDIX 1. CJ1M/CJ2M APPEARANCE COMPARISON ............................................................ 10
APPENDIX 2. CJ1M/CJ2M PERIPHERAL FUNCTION COMPARISON ........................................... 13
APPENDIX 3. CJ1M/CJ2M BUILT IN I/O FUNCTION COMPARISON ............................................. 14
APPENDIX 4. CJ1M/CJ2M BUILT IN ETHERNET FUNCTION COMPARISON ............................... 16
1
This replacement guide describes the procedure to rebuild the system which uses the CJ1-series PLC by
Work flow
Selecting the model
Reading PLC data
Description
Reference Pages
Select the unit, programming software, and connecting cable
to replace CJ1 with CJ2M.
Some CJ1 Units can be used with CJ2M. However, some
Units can not be used with CJ2M. Read the reference pages
(r
ecommended models and precautions) and select the
models.
Load the program, I/O Memory and other settings from the
CJ1M/CJ1G using the programming software and connecting
cable.
Converting and modifying data
Convert the data read from
CJ1 for CJ2M.
Most of the data can be automatically converted; however,
some instructions and some Unit data can not be converted.
Refer to the reference pages and modify the data and program
separately.
1. Performance specifications
2. System Configurations
4.Example of co
nverting
ladder program by
CX-Programmer
Preparing Units
Prepare the units, programming software, and connecting
cable.
Continue to actual replacement work
Start
4.Example of converting
ladder program by
CX-Programmer
Replacing the units
Writing data
D
escription
Reference pages
Replace the units.
*Refer to CJ-series
CJ2 CPU Unit Hardware User
’s
Manual (Cat. No.
W472)
and user’s manuals of each
Special Units for installation of the unit.
Write the data acquired and converted from
CJ1M/CJ1G (programs, IO memory, setting data) to
CJ2M.
Check the wirings by oper
ating
In/Out signals
Checking operation
Turn ON the power to the controller and check the
operation.
Refer to
the related
manuals.
Wiring
Perform wiring for the replacement unit.
*Refer to CJ-series CJ2 CPU Unit Hardware User’s
Manual (Cat. No. W472) and user’s manuals of each
Special Units for information of wiring
.
Replacement finished
Notes:
In some systems, cycle time needs to be adjusted because the cycle times in
CJ1M/CJ1G and CJ2M are different and it may affect the operation.
introducing the CJ2M-series PLC instead. The CJ2M-series has functions which can replace the functions and
operation of CJ1-series PLC. Take the below work flow to replace your system. Also, refer to the reference
pages for details.
1) Preparation: Before starting replacement, prepare according to the following steps.
2) Actual replacement work: Take the steps below to replace the CJ1M/CJ1G to CJ2M.
2
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