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8.6 HasExternalVar ToC Previous Next index

This ReferenceType is a subtype of the Organizes ReferenceType defined in OPC 10000-5. Its representation in the AddressSpace is specified in Table 24.

Table 24 – HasExternalVar ReferenceType

Attributes Value    
BrowseName HasExternalVar    
InverseName ExternalVarOf    
Symmetric False    
IsAbstract False    
References NodeClass BrowseName Comment
Subtype of Organizes ReferenceType defined in OPC 10000-5      

The HasExternalVar ReferenceType is a concrete ReferenceType and can be used directly.

The semantic of this ReferenceType is to reference components of a Ctrl Program Organization Unit declared with the key word VAR_EXTERNAL.

The SourceNode of References of this type shall be a subtype of CtrlProgramOrganizationUnitType or an instance of one of its subtypes.

The TargetNode of this ReferenceType shall be a Variable or an Object of the ObjectType CtrlFunctionBlockType or one of its subtypes.

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