Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller CUSTOMIZATION GUIDE - Manual (Page 38)

G08
PID - 0
NAME SYMBOL DATAPOINT
INPUTS
PROCESS VARIABLE PV0 C100
DEVIATION DV0 C121
RESET FEEDBACK RF0 C127
CONTROL TRACK
COMMAND CTC0 L123
PARAMETERS PROPORTIONAL BAND PB0 C106
RESET TIME TR0 C107
RATE TIME TD0 C108
OUTPUT HIGH LIMIT OH0 C109
OUTPUT LOW LIMIT OL0 C110
MANUAL RESET MR0 C111
INSTRUMENT RANGE IR0 C115
FEED FORWARD FF0 C122
REVERSE SWITCH RSW0 L106
OUTPUTS
CONTROL OUTPUT CO0 C123
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
2-31