Micromod RetroPAK: SLC Configuration Manual - Manual (Page 356)

Command Series Migration to MOD 30ML
Function Code 156 – PID Ratio with Remote SP
To change the Control Action (S21):
Open the PID block and open the General tab. Change the Controller Action by selecting
the desired option (Direct or Reverse).
See figure below:
Figure 156rr .10.
Function Code
156
PID Ratio with
Remote SP
156rr - 12