Micromod RetroPAK: SLC Configuration Manual - Manual (Page 127)

Pre-configured Single Loop PID with Remote SP
GENERAL DESCRIPTION
The advanced PID controller function code implements a proportional integral derivative
controller.
This control strategy has a loop compounds (REMOTE SETPOINT PID) with PID
loops with REMOTE setpoint, I/O and other function blocks.
UTILIZATION
The loop compound has the function code compound FC156 – PID with Remote SP
internally. This is PID with Remote SP and uses a PID block, PAD (Process Alarm
Display) blocks and a variety of other blocks to perform a full-pledged PID with PV and
remote Setpoint. The PID is advanced with feed-forward control, bump-less transfers and
other features.
Load the loop compound at the top level (where the IF, DIF, SE and ST blocks are
located) of the function block diagram.
The built-in input 1 (AIN1 for Process variable), input 2 (AIN2 for remote setpoint) and
built-in output 1 (AOUT1) are used in the loop.
Figure P3 .1.
PID with Remote
SP
P3 - 1