I'm new to PlantPAx, and trying to make sense of some new equipment at my plant.
There is a P_AOut AOI that will stop passing an input PSet_CV through it to Out_CV (to a 4/20mA Fisher Valve). There is no indication on the HMI of a fault. I've found toggling OCmd_Reset clears the fault and the valve resumes controlling again for a short while. In the P_AOut AOI I noticed the fault shows up under Val_Fault as 32 indicating a I/O Fault.
If I trace PSet_CV back to the previous function block diagram, it's from a flow control P_PIDE AOI. That seems to be where the faceplate is linked to. It seems to be a cascade setup. The flow control PID sends the setpoint to the analog output AOI. I just don't understand how the faceplate is linked...