Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller CUSTOMIZATION GUIDE - Manual (Page 39)

G09
PID - 1
NAME SYMBOL DATAPOINT
INPUTS
PROCESS VARIABLE PV1 C136
DEVIATION DV1 C157
RESET FEEDBACK RF1 C163
CONTROL TRACK
COMMAND 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
CONTROL OUTPUT CO1 C159
Description:
This subroutine computes a control output signal based on the above listed inputs
and parameters. The result is available as a database parameter CO. When the
control track command is zero,the module output will track the reset feedback by
back calculating the integrator term. When CTC is 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
operation, reset feedback should equal OUT and control track command should
equal AUT.
MODULAR CONTROLLER CUSTOMIZATION GUIDE
2-32