Hello, I have previously successfully read and wrote coils and registers in GOC, ( https://mitsubishielectric.in/fa/fa-goc-plc-hmi.html ) with RPi via Modbus TCP/IP using pymodbus. Now, I am using a Raspberry Pi 3 B+ to establish communication with the FX5U PLC ( http://www.atronika.com/Mitsubishi/P...