Specifications

Chapter 3 - AsconControlLib
95
The following picture shows an example using CFC languages.
Here is reported a detailed description of the parameters:
Input Description
PB Proportional band coefficient that multiplies the error
TI
Integral time value, that specifies the time required by the integral
term to generate an output equivalent to the proportional term
TD
Is the time required by the proportional term P to repeat the output
provided by the derivative term D
RCGA Gain Factor for the cool action
AT _ RU N
Start of the tuning operation. The command is received on the
rising edge of the input
AT _ A BO RT
Abort a running tuning process. The command is received on the
rising edge of the input
AUTOUPDATE
If TRUE the result of the tuning operation will be updated
automatically
SP Setpoint Value in engineering units
MEAS Measure Value in engineering units
M_RES
Is the control output value when PV = SP in a PD only algorithm
(lack of the integral term)
FFWD Value for Feed Forward Action
OC
Specifies the span within the overshoot control operates. Low
values (1.00... 0.01) emphasize the overshoot strength during set
point variations. The overshoot control does not affect the PID
action effectiveness. A value of 1.00 means OC disabled.
AT_ RU N
AT_ABORT
AUTOUPDATE
SP
MEAS
ATB
M_RES
FFWD
OC
OCRB
DBND
DTRK
TRK
DAM
AM_VAL
DAUX
AUX
PV_LO
PV_HI
OUTH_HI
OUTC_HI
S2_HC_CONTROLLER
PB
TI
TD
RCGA
PB
TI
TD
RCGA
OUTH
OUTC
OUTHC
OVERLAP
TPB
TTI
TTD
TRCGA
AT_ ST S
AT_ FA IL