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4.4.10 TransitionType

Transitionsof a FiniteStateMachineare represented as Objectsof the ObjectType TransitionTypeformally defined in Table 9. Each Objectof the TransitionTypeor one of its subtypes shall be referenced from the ObjectType FiniteStateMachineTypeor one of its subtypes using a HasComponent Referenceor a subtype of HasComponentand shall not have a ModellingRuleas they are not applied on the instances.

Each valid Transitionshall have exactly one FromState Referenceand exactly one ToState Reference, each pointing to an Objectof the ObjectType StateType.

Each Transitioncan have one or more HasCause Referencespointing to the cause that triggers the Transition.

Each Transitioncan have one or more HasEffect Referencespointing to the effects that occur when the Transitionwas triggered.

Table 9– TransitionType definition

Attribute

Value

BrowseName

TransitionType

IsAbstract

False

References

NodeClass

BrowseName

DataType

TypeDefinition

ModellingRule

Subtype of the BaseObjectType defined in OPC 10000-5

Note that a Referenceto this subtype is not shown in the definition of the BaseObjectType.

HasProperty

Variable

TransitionNumber

UInt32

PropertyType

Mandatory

Conformance Units

Base Info Finite State Machine Instance

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