The MultiStateDiscreteSignalVariableType is used for process variables that can have more than two states. It is formally defined in Table 261.
Table 261 – MultiStateDiscreteSignalVariableType definition
|
Attribute |
Value |
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|
BrowseName |
MultiStateDiscreteSignalVariableType |
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|
IsAbstract |
False |
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|
ValueRank |
−1 (−1 = ‘Scalar’) |
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|
DataType |
UInt32 |
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|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
Other |
|
|
Subtype of 0:MultiStateDictionaryEntryDiscreteBaseType defined in OPC 10000-19, i.e. inheriting the InstanceDeclarations of that Node |
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|
0:HasComponent |
Variable |
ActualValue |
0:UInt32 |
0:BaseDataVariableType |
O |
|
|
0:HasComponent |
Variable |
SimulationValue |
0:UInt32 |
0:BaseDataVariableType |
O |
|
|
0:HasComponent |
Variable |
SimulationState |
0:Boolean |
0:BaseDataVariableType |
O |
|
|
0:HasDictionaryEntry |
Object |
|
0:IrdiDictionaryEntryType |
|
||
|
Conformance Units |
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|
PA-DIM MultiStateDiscreteVariable |
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|
PA-DIM MultiStateDiscreteVariable Simulation |
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ActualValue: ABN646#002 defines “parameter indicating the discrete value of the not simulated discrete process variable of a device”.
SimulationValue: ABN637#002 defines “parameter indicating the simulated discrete value of a variable, which can have multiple states”.
SimulationState; ABN611#002 defines “parameter indicating the state of simulation” and used also to enable/disable simulation. The value true means ‘Simulation enabled’, and false means ‘Simulation disabled’.
ABN636#002 defines “parameter indicating the discrete input or output value out of multiple state of a device”.
The components of MultiStateDiscreteSignalVariableType have additional references which are defined in Table 262.
Table 262 – MultiStateDiscreteSignalVariableType additional References
|
SourceBrowsePath |
Reference Type |
Is Forward |
TargetBrowsePath |
|
ActualValue |
0:HasDictionaryEntry |
True |
|
|
SimulationValue |
0:HasDictionaryEntry |
True |
|
|
SimulationState |
0:HasDictionaryEntry |
True |
The child Nodes of the MultiStateDiscreteSignalVariableType have additional Attribute values defined in Table 263.
Table 263 – MultiStateDiscreteSignalVariableType Attribute values for child Nodes
|
BrowsePath |
Value Attribute |
|
ActualValue |
0 |
|
SimulationValue |
0 |
|
SimulationState |
False |