7.24 ControlType ObjectType Definition

The ControlType provides Variables for precise control of a Pump according to DIN IEC 60050-351 and is formally defined in Table 55.

Table 55 – ControlType Definition
Attribute Value
BrowseNameControlType
IsAbstractFalse
References Node Class BrowseName DataType TypeDefinition Other
Subtype of the 2:FunctionalGroupType defined in OPC 10000-100, i.e. inheriting the InstanceDeclarations of that Node.
0:HasComponentVariableCommandVariable0:Double0:BaseAnalogTypeO, RW
0:HasComponentVariableControlDifferenceVariable0:Double0:BaseAnalogTypeO, RO
0:HasComponentVariableControlledVariable0:Double0:BaseAnalogTypeO, RO
0:HasComponentVariableControllerOutputVariable0:Double0:BaseAnalogTypeO, RO
0:HasComponentVariableDeadTime0:Double0:BaseAnalogTypeO, RW
0:HasComponentVariableDerivativeActionCoefficient0:Double0:BaseAnalogTypeO, RW
0:HasComponentVariableFeedbackVariable0:Double0:BaseAnalogTypeO, RO
0:HasComponentVariableFinalControlledVariable0:Double0:BaseAnalogTypeO, RW
0:HasComponentVariableIntegralActionCoefficient0:Double0:BaseAnalogTypeO, RW
0:HasComponentVariableManipulatedVariable0:Double0:BaseAnalogTypeO, RW
0:HasComponentVariableOperatingMode0:String0:DataItemTypeO, RW
0:HasComponentVariableProportionalActionCoefficient0:Double0:BaseAnalogTypeO, RW
0:HasComponentVariableReferenceVariable0:Double0:BaseAnalogTypeO, RW

The InstanceDeclarations of the ControlType have additional Attributes defined in Table 56. The Variables and the associated Descriptions are based on the standard DIN IEC 60050-351.

Table 56 – ControlType Attribute values for child Nodes
BrowsePath Value Attribute Description Attribute
CommandVariableVariable quantity, which is not influenced by the control but is introduced into the control system from outside with the aim of making the final controlled variable follow it in a given relationship
ControlDifferenceVariableDifference between the reference variable and the feedback variable
ControlledVariableOutput variable of the controlled system that will be acted upon by one or more manipulated variables
ControllerOutputVariableOutput variable of the controlling element, which is deducted from the control difference variable and is also the input variable of the actuator
DeadTimeIn a dead-time element the duration of the time interval by which the output variable is shifted relative to the input variable

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 5457219

DisplayName: s

Description: second [unit of time]

DerivativeActionCoefficientFor a derivative element, the quotient of the value of the output variable to the value of the time derivative of the input variable
FeedbackVariableVariable quantity, which represents the controlled variable and is returned to the comparing element
FinalControlledVariableVariable quantity which has, or combination of variable quantities which have, to be influenced by the control
IntegralActionCoefficientFor an integral element, the quotient of the time derivative of the output variable to the fixed value of the input variable
ManipulatedVariableOutput variable of the controlling system, which is also an input variable of the controlled system
OperatingModeCharacterization of the way and the extent to which the human operator intervenes in the control equipment
ProportionalActionCoefficientFor a proportional element, the quotient of the variation of the output variable to the corresponding variation of the input variable
ReferenceVariableInput variable to a comparing element in a controlling system, which sets the desired value of the controlled variable and is deducted from the command variable