4 State Machine Model ToC Previous

4.4 Representation of state machines in the AddressSpace ToC Previous Next

4.4.6 FiniteStateVariableType ToC Previous Next index

The FiniteStateVariableType is a subtype of StateVariableType and is used to store the current state of a FiniteStateMachine as a human readable name.

The FiniteStateVariableType is formally defined in Table 5.

Table 5 – FiniteStateVariableType definition

Attribute Value        
BrowseName FiniteStateVariableType        
DataType LocalizedText        
ValueRank −1 (−1 = Scalar)        
IsAbstract False        
References Node Class BrowseName DataType TypeDefinition Modelling Rule
Subtype of the StateVariableType defined 4.4.3          
HasProperty Variable Id NodeId PropertyType Mandatory
Conformance Units          
Base Info Finite State Machine Instance          

Id is inherited from the StateVariableType and overridden to reflect the required DataType. This value shall be the NodeId of one of the State Objects of the FiniteStateMachineType. If the FiniteStateMachine is subtyped, it shall be the NodeId of the State defined on the supertype, i.e., where the State is defined the first time in the type hierarchy.

The Name Property is inherited from StateVariableType. Its Value shall be the BrowseName of one of the State Objects of the FiniteStateMachineType.

The Number Property is inherited from StateVariableType. Its Value shall be the StateNumber for one of the State Objects of the FiniteStateMachineType.

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