What are downsides of bringing process variable (flow rate) into a pid loop via Modbus rather than direct connection
Proposed design has a flow control loop in PLC. Design proposes to read flowrate via serial Modbus. I would normally avoid bringing the input into pid loop via serial connection. Is this common?
Proposed design has a flow control loop in PLC. Design proposes to read flowrate via serial Modbus. I would normally avoid bringing the input into pid loop via serial connection. Is this common?