Activity Forums Questions & Troubleshooting Inline flow sensor not sending data to Controllino Mega Reply To: Inline flow sensor not sending data to Controllino Mega

  • Lukas

    Member
    March 15, 2023 at 3:32 pm

    Hi Barrels,

    at first to the Modbus. Before you start the integration of the sensor with the CONTROLLINO, please try to control the sensor from a PC with RS485-USB converter and some Modbus RTU Master application. You will easily fine proper registry numbers and meanings etc.

    To the analog measurement. You cannot directly connect current loop 4-20 mA to CONTROLLINO analog input. You should use external 500 Ohm resistor to convert it to voltage suitable for the CONTROLLINO analog input.

    Good luck!

    Lukas