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
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Attribute |
Value |
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BrowseName |
ControlType |
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IsAbstract |
False |
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References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
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Subtype of the 2:FunctionalGroupType defined in OPC 10000-100, i.e. inheriting the InstanceDeclarations of that Node. |
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0:HasComponent |
Variable |
CommandVariable |
0:Double |
0:BaseAnalogType |
O, RW |
|
0:HasComponent |
Variable |
ControlDifferenceVariable |
0:Double |
0:BaseAnalogType |
O, RO |
|
0:HasComponent |
Variable |
ControlledVariable |
0:Double |
0:BaseAnalogType |
O, RO |
|
0:HasComponent |
Variable |
ControllerOutputVariable |
0:Double |
0:BaseAnalogType |
O, RO |
|
0:HasComponent |
Variable |
DeadTime |
0:Double |
0:BaseAnalogType |
O, RW |
|
0:HasComponent |
Variable |
DerivativeActionCoefficient |
0:Double |
0:BaseAnalogType |
O, RW |
|
0:HasComponent |
Variable |
FeedbackVariable |
0:Double |
0:BaseAnalogType |
O, RO |
|
0:HasComponent |
Variable |
FinalControlledVariable |
0:Double |
0:BaseAnalogType |
O, RW |
|
0:HasComponent |
Variable |
IntegralActionCoefficient |
0:Double |
0:BaseAnalogType |
O, RW |
|
0:HasComponent |
Variable |
ManipulatedVariable |
0:Double |
0:BaseAnalogType |
O, RW |
|
0:HasComponent |
Variable |
OperatingMode |
0:String |
0:DataItemType |
O, RW |
|
0:HasComponent |
Variable |
ProportionalActionCoefficient |
0:Double |
0:BaseAnalogType |
O, RW |
|
0:HasComponent |
Variable |
ReferenceVariable |
0:Double |
0:BaseAnalogType |
O, 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
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BrowsePath |
Value Attribute |
Description Attribute |
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CommandVariable |
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Variable 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 |
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ControlDifferenceVariable |
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Difference between the reference variable and the feedback variable |
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ControlledVariable |
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Output variable of the controlled system that will be acted upon by one or more manipulated variables |
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ControllerOutputVariable |
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Output variable of the controlling element, which is deducted from the control difference variable and is also the input variable of the actuator |
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DeadTime |
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In a dead-time element the duration of the time interval by which the output variable is shifted relative to the input variable |
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NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5457219 DisplayName: s Description: second [unit of time] |
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DerivativeActionCoefficient |
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For a derivative element, the quotient of the value of the output variable to the value of the time derivative of the input variable |
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FeedbackVariable |
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Variable quantity, which represents the controlled variable and is returned to the comparing element |
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FinalControlledVariable |
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Variable quantity which has, or combination of variable quantities which have, to be influenced by the control |
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IntegralActionCoefficient |
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For an integral element, the quotient of the time derivative of the output variable to the fixed value of the input variable |
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ManipulatedVariable |
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Output variable of the controlling system, which is also an input variable of the controlled system |
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OperatingMode |
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Characterization of the way and the extent to which the human operator intervenes in the control equipment |
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ProportionalActionCoefficient |
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For a proportional element, the quotient of the variation of the output variable to the corresponding variation of the input variable |
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ReferenceVariable |
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Input 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 |