Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller CUSTOMIZATION GUIDE - Manual (Page 64)

F-CIM 51
PID - 1
NOT REUSABLE
NAME SYMBOL DATAPOINT
INPUTS
S n-1 DEVIATION DV1 C157
A [unused]
B RESET FEEDBACK RF1 C163
C CONTROL TRACK COM-
MAND CTC1 L147
PARAMETERS PROPORTIONAL BAND PB1 C142
RESET TIME TR1 C143
RATE TIME TD1 C144
OUTPUT HIGH LIMIT OH1 C145
OUTPUT LOW LIMIT OL1 C146
MANUAL RESET MR0 C147
INSTRUMENT RANGE IR1 C151
FEED FORWARD FF1 C158
REVERSE SWITCH RSW1 L130
OUTPUTS
S n CONTROL OUTPUT CO1 C159
Description:
This module computes a control output signal based on the above listed inputs and parameters.
The result is simultaneously available as the module output Sn and as a database parameter CO.
The A, B, and C inputs can be any L,B, C[S], or H type datapoint. When the control track command
input is less than one, the module output will track the reset feedback input (B) by back calculating
the integrator term. When (C) input is greater than or equal to 1 the reset feedback is used by the
integrator to calculate the next output and should reflect the value (scaled 0-100%) of the value of
the final control element. For standard PID controller reset feedback, (B) should be OUT and con-
trol track command should be AUT.
MODULAR CONTROLLER CUSTOMIZATION GUIDE
3-12