System:version - Keysight Technologies P Series Programming Manual

SYSTem:VERSion?

This query returns the version of SCPI used in the power meter. The response is in
the form of XXXX.Y, where XXXX is the year and Y is the version number.
Syntax
Example
SYST:VERS?
Keysight N8262A Programming Guide
:VERS
SYST
?
This command queries which version of SCPI
is used in the power meter.
SYSTem Subsystem 12
535