There is no such thing!
1. Measurement is based on data, and no one will enjoy special treatment just because they have blue eyes or yellow hair!
2. In the motor test system, power measurement is the key, and Siemens PLC is not suitable!
3. Siemens PLC is generally used for control and measurement. Measurement and calibration are difficult. I have never heard of any verification procedures or calibration specifications for PLC.