Name: Omron NJ Series
Brand: Omron
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2 CPU Unit Operation

2-12

NJ-series CPU Unit Software User’s Manual (W501)

System-defined variables are defined in advance in an NJ-series Controller. The names and all attri-

butes are defined by the system. They have specific functions. You cannot change the variable names

or any other attributes.

The system-defined variables are specific to a function module. There are system-defined variables for

each function module. The types of system-defined variables are listed in the following table.

The system-defined variables for motion control are classified according to what the Motion Control

Function Module does, as listed in the following table.

*1 An axes group consists of multiple axes. An axes group is used for interpolation.

Refer to A-3 System-defined Variables for details on system-defined variables.

System-defined Variables

Function module Type of system-defined variable

PLC Function Module System-defined variables for PLC Function Module

Motion Control Function Module System-defined variables for motion control

EtherNet/IP Function Module System-defined variables for EtherNet/IP

EtherCAT Master Function Module System-defined variables for EtherCAT master

System-defined variables for

motion control

Description

MC Common Variable Common processing for the entire Motion Control Function Module

Axis variables Control of individual axes

Axes Group variables

Control of axes groups

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