Omron ZFX-C Command Reference Manual page 26

Acquiring the Version No. < VERGET command >
This command acquires the version information of the Controller.
< Command format >
C R
V E R G E T
< Response format >
When processing ends successfully
Z F X -
O K C R
When processing fails
C R
E R
< Explanation of parameters >
Model information
Version No.
24
About Communication Commands
or
C R
V R
C R
V e r X . X X
Version No.
Model information
The model No. of the Controller is returned.
The version No. of the Controller's firmware is returned.
ZFX-C Serial Communication Command Reference