TheAuditUpdateStateEventTypeis a subtype of the AuditUpdateMethodEventType. It can be used to generate an Eventidentifying that a Transitionof a StateMachinewas triggered. It is formally defined in Table 16.

Table 16– AuditUpdateStateEventType

Attribute		Value
BrowseName		AuditUpdateStateEventType
IsAbstract		True
References	NodeClass		BrowseName	DataType	TypeDefinition	ModellingRule
Subtype of the AuditUpdateMethodEventTypedefined in OPC 10000-5
HasProperty	Variable		OldStateId	BaseDataType	PropertyType	Mandatory
HasProperty	Variable		NewStateId	BaseDataType	PropertyType	Mandatory
Conformance Units
Auditing UpdateStates

The AuditUpdateStateEventTypeinherits the Propertiesof the AuditUpdateMethodEventType.

The inherited Property SourceNodeshall be filled with the NodeIdof the StateMachineinstance where the State changed. If the State changed in a SubStateMachine, then the NodeIdof the SubStateMachinehas to be used.

The SourceNamefor Eventsof this type should be the effect that generated the event (e.g. the name of a Method). If the effect was generated by a Methodcall, the SourceNameshould be the name of the Methodprefixed with "Method/".

OldStateIdreflects the Id of the state prior the change.

NewStateIdreflects the new Id of the state after the change.