I would like to know, did someone use PID control in zenon logic? What is th menaning of DEADBAND_Error parameter? Here is Deadband in relation with PV an previous PV... (PVPrev-DB < PV < PVprev+DB) error stays the same as in prev. cycle? What is FFD parameter?
How to make standard functionality for deadband like: Error = SP-PV If abs(Error) < deadband, Error is 0, PID Output = unchanged, else PID Output = PID calculated, end if