Unexpected Number When Reading Plc Using Pymodbus

I am using pymodbus to read a register on a Wago 750-881 PLC. I am also reading the same register on the Modbus Poll utility, as well as, an HMI. The Modbus Poll and HMI are readin

Solution 1:

You may be reading the wrong register, or from the wrong unit ID, or some combination of both.

If you use Wireshark to capture what the 3rd party software and your own software is doing you should be able to spot the difference pretty quickly.