sayahan2003
Member
Hello my friends,
if we want to enter the setpoint of a PID controller from an HMI, we use engineering unit. For instance, if we have a level controller, we insert the setpoint in % of level. my question is where and how this engineering unit is converted to raw value (0-32767) in the PLC/RTU? will this happen in HMI or in PLC/RTU? I am confused because when we scale something, it means we convert it from raw value to eng unit. here we are doing reverse.
Thank you
if we want to enter the setpoint of a PID controller from an HMI, we use engineering unit. For instance, if we have a level controller, we insert the setpoint in % of level. my question is where and how this engineering unit is converted to raw value (0-32767) in the PLC/RTU? will this happen in HMI or in PLC/RTU? I am confused because when we scale something, it means we convert it from raw value to eng unit. here we are doing reverse.
Thank you
