industrial 951
Member
First time using a PID instruction on a micrologix 1400 Platform, my issue is putting the PID instruction in manual and writing to the CV for manual operation of the loop. I set the AM bit true and should be able to use a MOV instruction to write my manual percentage to address PD#.CVP correct? From 0 to 100? I tried this and I cannot control the control variable manually, I have to set the AM bit true and write directly to the output. Also when I switch the PID instruction from manual to auto, my PID output isn't exactly smooth, is there a way to perform a bump less transition from auto to manual. This PID is for a heating temperature control loop.