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• OPC-10000-16 – OPC Unified Architecture - Part 16: State Machines
  4.4.2 StateMachineType
  StateMachine may not be active. In this case, the CurrentState and LastTransition Variables shall have a status equal to Bad_StateNotActive (see Table 19 ). Subtypes may add components which ... HasSubtype ObjectType FiniteStateMachineType Defined in 4.4.6 HasComponent Variable CurrentState LocalizedText StateVariableType Mandatory HasComponent Variable LastTransition LocalizedText TransitionVariableType Optional Conformance Units Base Info State Machine Instance CurrentState stores the current state