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4.4.16 TransitionEventType

TheTransitionEventTypeis a subtype of the BaseEventType. It can be used to generate an Eventidentifying that a Transitionof a StateMachinewas triggered. It is formally defined in Table 15.

Table 15– TransitionEventType

Attribute

Value

BrowseName

TransitionEventType

IsAbstract

True

References

NodeClass

BrowseName

DataType

TypeDefinition

ModellingRule

Subtype of the base BaseEventTypedefined in OPC 10000-5

HasComponent

Variable

Transition

LocalizedText

TransitionVariableType

Mandatory

HasComponent

Variable

FromState

LocalizedText

StateVariableType

Mandatory

HasComponent

Variable

ToState

LocalizedText

StateVariableType

Mandatory

Conformance Units

Base Info Finite State Machine Instance

The TransitionEventTypeinherits the Propertiesof the BaseEventType.

The inherited Property SourceNodeshall be filled with the NodeIdof the StateMachineinstance where the Transitionoccurs. If the Transitionoccurs in a SubStateMachine, then the NodeIdof the SubStateMachinehas to be used. If the Transition occurs between a StateMachineand a SubStateMachine, then the NodeIdof theStateMachinehas to be used, independent of the direction of the Transition.

Transitionidentifies the Transitionthat triggered the Event.

FromStateidentifies the Statebefore the Transition.

ToStateidentifies the Stateafter the Transition.

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