Hi sobansair,
please stick with your thread instead of creating double posts!
On your question:
The PID function does give an output - as dictated by DATAFLOW!
But you need to determine by debugging which PID output value you do receive…
Which PID gains do you use? How did you determine them? Do they fit on your control loop?
Best regards,
GerdW
using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019