Process Control Instructions 
 
190  Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 
WindupHIn  BOOL  Windup high request. When TRUE, CV will 
not be allowed to increase in value. This 
signal will typically be the WindupHOut 
output from a secondary loop. 
Default = FALSE 
WinduplIn  BOOL  Windup low request. When TRUE, CV will 
not be allowed to decrease in value. This 
signal will typically be the WindupLOut 
output from a secondary loop. 
Default = FALSE 
GainEUSpan  BOOL  ModelGain units in EU or as % of span. 
CV ModelGain units in EU or % of span. Set 
to interpret ModelGain as EU, reset to 
interpret ModelGain as % of Span. 
Default = FALSE 
TRUE = Gain in EU 
FALSE = Gain in % of span 
ProcessGainSign  BOOL  Used only for Autotuning. Sign of the 
process gain (Delta PV/Delta CV). 
Set to indicate a negative process gain 
(increase in output causes a decrease in 
PV). 
Reset to indicate a positive process gain 
(increase in output causes an increase in 
PV). 
Default = FALSE 
ProcessType  DINT  Process type selection (1=Integrating, 
0=non-integrating) 
Default = 0 
ModelGain  REAL  The internal model gain parameter. Enter a 
positive or negative gain depending on 
process direction. 
Valid = maximum negative 
float −> maximum positive 
float 
Default = 0.0 
ModelTC  REAL  The internal model time constant in 
seconds. 
Valid = 0.0 to maximum 
positive float 
Default = 0.0 
ModelDT  REAL  The internal model deadtime in seconds.  Valid = 0.0 to maximum 
positive float 
Default = 0.0 
RespTC  REAL  The tuning parameter that determines the 
speed of the control variable action in 
seconds. 
Valid = 0.0 to maximum 
positive float 
Default = 0.0 
PVTracking  BOOL  SP track PV request. Set TRUE to enable SP 
to track PV. Ignored when in CascadeRatio 
or Auto modes. 
Default = FALSE 
CVTrackReq  BOOL  CV Track request. Set true to enable CV 
Tracking when autotune is OFF. Ignored in 
Hand and Override mode. 
Default = FALSE 
AllowCasRat  BOOL  Allow CascadeRatio mode permissive. Set 
TRUE to allow CascadeRatio mode to be 
selected by using either ProgCasRatReq or 
OperCasRatReq. 
Default = FALSE 
ManualAfterInit  BOOL  Manual mode after initialization request. 
When TRUE, the function block will be 
placed in the Manual mode when 
CVInitializing is set TRUE unless the current 
mode is Override or Hand. 
When ManualAfterInit is FALSE, the 
function block's mode will not be changed. 
Default = FALSE