Omron CJ1W-EIP21 Operation Manuals page 84

3 Assigning Device Variables for CJ-series Units
User-defined Variables
User-defined variables are used to perform tag data links and other communications for an EtherNet/IP
Unit that is connected to an NJ-series CPU Unit. For details on user-defined variables, refer to the NJ-
series CPU Unit Software User's Manual (Cat. No. W501).
Access Methods from the User Program
The CPU Unit and EtherNet/IP Unit exchange data through the memory used for CJ-series Units in the
CPU Unit.
Refer to the NJ-series CPU Unit Software User's Manual (Cat. No. W501) for details on the memory
used for CJ-series Units.
To exchange data, use the data that is listed in the following table in the user program.
Type of data
Software switches
Status data
Setup data
Status data
Data that is updated with tag data links
3-4
Access method
Device variables for the CJ-series Unit
User-defined variables
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)