Register 0X2013 - Major Firmware Version; Register 0X2014 - Minor Firmware Version; Register 0X2015 - Mbs Version - WAGO 750-8207 Manual

302 MODBUS – CODESYS 2
10.5.6.5 Register 0x2013 – Major Firmware Version
This register provides the major part for the firmware version.
10.5.6.6 Register 0x2014 – Minor Firmware Version
This register provides the minor part for the firmware version.
10.5.6.7 Register 0x2015 – MBS Version
This register provides the version of the MODBUS slave library. The high byte
contains the major version number and the low byte, the minor version number.
Example:
0x010A => Major version number = 1, Minor version number = 10.
Manual
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
WAGO-I/O-SYSTEM 750
750-8207 PFC200 CS 2ETH RS 3G