Process Control Instructions
84 Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Examples
Example 1
The easiest way to implement a PIDE instruction is to create a function block
routine in a program in a periodic task. The default timing mode for the PIDE
instruction is periodic. When the PIDE instruction is used in a periodic task and
in periodic timing mode, it automatically uses the periodic task's update rate as its
delta t update time. All you need to do is wire the process variable analog input
into the PV parameter on the PIDE instruction and wire the CVEU out of the
PIDE instruction into the controlled variable analog output.
Optionally, you can wire the analog input’s fault indicator (if one is available) into
the PVFault parameter on the PIDE instruction. This forces the PIDE into
Manual mode when the analog input is faulted and stops the PIDE CVEU output
from winding up or down when the PV signal is not available.
Function Block
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