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