Function Block Properties Dialog Box - General Configuration Tab Overview (CC)

The Coordinated Control (CC) instruction controls a single process variable (PV) by manipulating as many as three different control variables (CV). As an option, any of the three outputs can be used as an input to create feed forward action in the controller. The CC calculates the control variables (CV1, CV2, and CV3) in the auto mode based on the PV deviation from the set point (SP), internal models, and tuning.
Use the
General Configuration
 tab of the
Function Block Properties
 dialog box to set the values for the parameters of the selected CC function block.
The following table describes the parameters available on the
General Configuration
tab:
Parameter
Description
Timing
  • Mode
Sets the value of the
TimingMode
 parameter. Supports the following options:
Periodic
 = 0 (default)
Oversampling
= 1
Real Time
 = 2
  • Oversample DeltaSymbolt
Sets the value of the
Oversample
DeltaSymbol
t
 parameter.
This field is only enabled if you chose the
Oversampling
 option for the
TimingMode
 parameter.
Valid values are in the range of 0 to the maximum of the TON_Timer elapsed time (4194.303 sec.)
The default value is 0.
  • RTS Period
Sets the value of the
RTSTime
 parameter.
This field is only enabled if you chose the
Real Time
 option for the
TimingMode
 parameter.
Valid values are in the range of 1...32767 (1 count = 1 millisecond).
Control Variables
  • Use CV Track Value
Select this check box to enable CV Tracking when autotune is set to OFF.
  • CV Track Value
Enter the control variable track values for CV1, CV2, and CV3 in the range of 0.0...100.0.
The default value is 0.0.
These values are useful in multiloop selection schemes where you want the CC instruction to follow the output of a different controlling algorithm, where you would connect the output of the controlling algorithm into the CV1TrackValue, CV2TrackValue, or CV3TrackValue, respectively.
The
Use CV Track Values
 check box must be selected for you to enter values in
CV Track Value
.
  • Override Value
Enter the control variable override value for CV1, CV2, and CV3 in the range of 0.0...100.0.
The default value is 0.0.
Set this value in Override mode.
These values should correspond to a safe state output of the CC loop.
  • Target Value
Enter the target value for controller output 1, 2, and 3 in the range of 0.0...100.0.
The default value is 0.0.
  • Deviation Action Priority
Choose the first, second, and third CV to act to compensate for PV-SP deviation.
The valid values include:
  • CV1
  • CV2
  • CV3
Deviation Action Priority First, Second, and Third are mutually exclusive.
  • Drive to Target Priority
Choose the CV with priority to be driven to its target value.
  • Drive to Target Priority First
Choose the CV with top priority to be driven to its target value.
Valid values include:
  • CV1
  • CV2
  • CV3
The default value is CV1.
  • Drive to Target Priority Second
Choose the CV with second highest priority to be driven to its target value.
Valid values include:
  • CV1
  • CV2
  • CV3
The default value is CV2.
  • Drive to Target Priority Third
Choose the CV with third highest priority to be driven to its target value.
Valid values include:
  • CV1
  • CV2
  • CV3
The default value is CV3.
Drive to Target Priority First, Second, and Third are mutually exclusive.
  • Target Response Time Constant
Enter a value in the range of 0.0 to a maximum positive floating value that determines the speed with which the controller outputs approach the target values.
The default value is 0.0.
  • Program Control Value Reset
Select this check box to reset the program control values.
  • Manual Mode after Initialization
When this check box is selected, the appropriate CV1, CV2, or CV3 is placed in the Manual mode when CV1(2)(3)Initializing is set to TRUE unless the current mode is Override or Hand.
When the check box is not selected, the CV1, CV2, or CV3 mode does not change.
PV Tracking
Select this check box to enable the SP to track the PV.
This control is ignored in Auto mode.
Status
Displays status information for blocks containing status bits. If none of the status bits are set, an
OK
 message appears in this field. Otherwise, a list of the status bits that are set appears here. This list is comprised of the parameter names associated with the status bits, and typically explain which parameters were configured with invalid values.
Execution Order
Displays the block's execution number if the routine is in a verified state. If the routine is not yet verified, a
Routine not verified
 message appears. Note that this item is read-only.
Never display description in a routine
Select this check box if you do not want the description to display in the routine.
OK
Click this button to add the selected item in the instruction list to the routine and close the Fun
ction Block Properties
 dialog box.
Cancel
Click this button to cancel any edits you have made and close the
Function Block Properties
 dialog box.
Apply
Click this button to accept your changes and continue editing in the
Function Block Properties
 dialog box.
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