
Function Code 156 – PID (Cascade)
GENERAL DESCRIPTION
The advanced PID controller function code implements a proportional integral derivative
controller.
UTILIZATION
The MOD 30ML/MODCELL compound FC156 – PID (Cascade) – 3 Element Drum
uses PID blocks, PAD (Process Alarm Display) blocks and a variety of other blocks to
perform a full-pledged Cascade loop (master – slave). The PID is advanced with feed-
forward control, bump-less transfers and other features.
Load this compound inside a loop compound.
Figure 156c .1.
Function Code
156. Cascade PID
156c - 1
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