Omron CJ1W-CT021 Operation Manuals page 127

User program
Inputs
Device variables for
CJ-series Unit
Outputs
Device variables for
CJ-series Unit
For settings
Device variables for
CJ-series Unit
Range data
Comparison data
User-defined variables
Device variable for CJ-series Unit
These variables are used to exchange data between the user program and Special I/O Units.
Use device variables for CJ-series Units with AT specification for the I/O port. There are three types
of variables: for input, for output, and for settings.
For details on allocation of device variables for CJ-series Units, refer to 4-1-3 Access from User Pro-
gram.
User-defined Variable
When a Counter is used in Range Mode or in Comparison Mode, user-defined variables are used to
access, from the user program, the area in which the comparison data is set. An address of the data
to be used as comparison data is set with the device variable for CJ-series Unit for setting. Use Sys-
mac Studio to specify the AT (allocation destination) in which comparison data is stored with user-
defined variables.
For details, refer to 4-2-2 Allocating Ranges and Comparison Data.
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
NJ-series CPU Unit
I/O port
General
Counter 1
AT specification
Counter 2
General
AT specification Counter 1
Counter 2
I/O port
General
Counter 1
AT specification
Counter 2
Memory used for
CJ-series Unit
Range Mode
Range 1 to 31
AT specification
Comparison Mode
Comparison condition
4 Exchanging Data with CPU
I/O refresh
I/O refresh
Power ON or
unit restart
1 to 31
High-speed Counter Unit
General Unit I/O
Data
and
Counter Specific
I/O Data
Unit Configuration
Data
4-3
4