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CJ2 CPU Unit Hardware User’s Manual
CJ2 CPU Unit Manuals
Information on the CJ2 CPU Units is provided in the following manuals. Refer to the appropriate manual
for the information that is required. 
Mounting and Setting Hardware
1
2
3
4
5
6
7
Wiring
Connecting Online to the PLC 
Software Setup
Creating the Program 
Checking and Debugging Operation 
Maintenance and Troubleshooting 
CJ-series CJ2 CPU Unit Hardware User’s Manual (W472)  CJ-series CJ2 CPU Unit Software User’s Manual (W473)  
This Manual
CX-Programmer Support Software 
Connecting Cables 
Error codes and remedies if a problem 
occurs
Procedures for connecting the 
CX-Programmer Support Software
Software setting methods for the CPU Unit 
(including I/O memory allocation, PLC Setup 
settings, Special I/O Unit parameters, CPU Bus 
Unit parameters, and routing tables. )
For details on built-in EtherNet/IP port, refer to 
the EtherNet/IP Unit Operation Manual (W465)
•   Checking I/O wiring, setting the Auxiliary Area 
settings, and performing trial operation
•   Monitoring and debugging with the 
CX-Programmer 
•   Unit part names and specifications 
•   Basic system configuration 
•   Unit mounting procedure
•   Setting procedure for DIP switch and rotary 
switches on the front of the CPU Unit 
For details on built-in EtherNet/IP port, refer 
to the EtherNet/IP Unit Operation Manual 
(W465)
•   Wiring the Power Supply Unit 
•   Wring Basic I/O Units and external I/O 
devices
•   Program types and basic information
•   CPU Unit operation 
•   Internal memory 
•   Data management using file memory in the 
CPU Unit 
•   Built-in CPU functions 
•   Settings
For details on instructions, refer to the 
Instructions Reference Manual (W474).