We have three type K TCs connected to an F2-04THM module. Thermocouples are reading 400-500 degrees low on the PLC input as compared to what they read with a TC calibrator. We have verified all jumper settings on the card and ladder logic in the PLC. TC extension cable is correct. The TC...
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...
Looking to see if anyone has implemented three interposing relays in a hardwired 2oo3 interlock circuit.
We are adding new PLC based interlock to an existing hardwired circuit and 2oo3 has been proposed for perceived reliability. Is there a packaged module with three ice-cubes, already wired...