Types Of Ethercat Variables - Omron Sysmac NJ Series User Manual

3 EtherCAT Communications
3-1-3

Types of EtherCAT Variables

There are three types of EtherCAT variables as listed below.
Variable type
Allocated var-
iables
System-de-
fined varia-
bles
3-6
Device varia- These are common in-out variables for EtherCAT slaves. You can change the
bles names of these variables.
CPU Unit
Axis Varia- These are structure variables for I/O and parameters for Servo Drive and en-
bles coder input slaves.
You can change the names of these variables.
CPU Unit
System-de- These variables are defined by the system for communications parameters,
fined varia- communication status, and other functions. You cannot change the names of
bles for these variables.
EtherCAT
master
Description
Device variables for I/O
ports
EtherCAT
EtherCAT EtherCAT
slave slave
Slave configuration
Axis Variable B
Axis Variable A
Allocated.
EtherCAT
Servo Drive
Servo Drive
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)
EtherCAT
slave
Allocated.
EtherCAT
slave