Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller CUSTOMIZATION GUIDE - Manual (Page 40)

G10
PID - 2
NAME SYMBOL DATAPOINT
INPUTS
PROCESS VARIABLE PV2 C172
DEVIATION DV2 C193
RESET FEEDBACK RF2 C199
CONTROL TRACK
COMMAND CTC2 L171
PARAMETERS PROPORTIONAL BAND PB2 C178
RESET TIME TR2 C179
RATE TIME TD2 C180
OUTPUT HIGH LIMIT OH2 C181
OUTPUT LOW LIMIT OL2 C182
MANUAL RESET MR2 C183
INSTRUMENT RANGE IR2 C187
FEED FORWARD FF2 C194
REVERSE SWITCH RSW2 L154
OUTPUTS
CONTROL OUTPUT CO2 C195
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
2-33