The HasTrueSubState ReferenceTypeis a concrete ReferenceTypethat can be used directly. It is a subtype of theNonHierarchicalReferences ReferenceType.

The semantics indicate that the sub state (the target Node) is a subordinate state of the True super state. If more than one state within a Conditionis a sub state of the same super state (i.e. several HasTrueSubState Referencesexist for the same super state) they are all treated as independent sub states. The representation in the AddressSpaceis specified in Table 5.

The SourceNodeof the Referenceshall be an instance of a TwoStateVariableTypeand the TargetNodeshall be either an instance of a TwoStateVariableTypeor an instance of a subtype of a StateMachineType.

It is not required to provide the HasTrueSubState Reference from super state to sub state, but it is required that the sub state provides the inverse Reference(IsTrueSubStateOf) to its super state.

Table 5– HasTrueSubState ReferenceType

Attributes

Value

BrowseName

HasTrueSubState

InverseName

IsTrueSubStateOf

Symmetric

False

IsAbstract

False

References

NodeClass

BrowseName

Comment

ConformanceUnits

A & C Basic