Figure 21 depicts the main ReferenceTypes of this specification and their relationship.
Figure 21 – Reference Types Overview
The upper grey box shows the OPC UA core ReferenceTypes from which the IEC 61131-3 ReferenceTypes are derived. The grey box in the second level shows the IEC 61131-3 ReferenceTypes that this specification introduces.
This ReferenceType is a subtype of the HasComponent ReferenceType defined in OPC 10000-5. Its representation in the AddressSpace is specified in Table 20.
Table 20 – HasInputVar ReferenceType
|
Attributes |
Value |
||
|
BrowseName |
HasInputVar |
||
|
InverseName |
InputVarOf |
||
|
Symmetric |
False |
||
|
IsAbstract |
False |
||
|
References |
NodeClass |
BrowseName |
Comment |
|
Subtype of HasComponent ReferenceType defined in OPC 10000-5 |
|||
The HasInputVar 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_INPUT.
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.
This ReferenceType is a subtype of the HasComponent ReferenceType defined in OPC 10000-5. Its representation in the AddressSpace is specified in Table 21.
Table 21 – HasOutputVar ReferenceType
|
Attributes |
Value |
||
|
BrowseName |
HasOutputVar |
||
|
InverseName |
OutputVarOf |
||
|
Symmetric |
False |
||
|
IsAbstract |
False |
||
|
References |
NodeClass |
BrowseName |
Comment |
|
Subtype of HasComponent ReferenceType defined in OPC 10000-5 |
|||
The HasOutputVar 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_OUTPUT.
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.
This ReferenceType is a subtype of the HasComponent ReferenceType defined in OPC 10000-5. Its representation in the AddressSpace is specified in Table 22.
Table 22 – HasInOutVar ReferenceType
|
Attributes |
Value |
||
|
BrowseName |
HasInOutVar |
||
|
InverseName |
InOutVarOf |
||
|
Symmetric |
False |
||
|
IsAbstract |
False |
||
|
References |
NodeClass |
BrowseName |
Comment |
|
Subtype of HasComponent ReferenceType defined in OPC 10000-5 |
|||
The HasInOutVar 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_INOUTPUT.
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.
This ReferenceType is a subtype of the HasComponent ReferenceType defined in OPC 10000-5. Its representation in the AddressSpace is specified in Table 23.
Table 23 – HasLocalVar ReferenceType
|
Attributes |
Value |
||
|
BrowseName |
HasLocalVar |
||
|
InverseName |
LocalVarOf |
||
|
Symmetric |
False |
||
|
IsAbstract |
False |
||
|
References |
NodeClass |
BrowseName |
Comment |
|
Subtype of HasComponent ReferenceType defined in OPC 10000-5 |
|||
The HasLocalVar 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.
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.
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.
This ReferenceType is a subtype of the NonHierarchicalReferences ReferenceType defined in OPC 10000-5. Its representation in the AddressSpace is specified in Table 25.
|
Attributes |
Value |
||
|
BrowseName |
With |
||
|
InverseName |
Executes |
||
|
Symmetric |
False |
||
|
IsAbstract |
False |
||
|
References |
NodeClass |
BrowseName |
Comment |
|
Subtype of NonHierarchicalReferences ReferenceType defined in OPC 10000-5 |
|||
The With ReferenceType is a concrete ReferenceType and can be used directly.
The semantic of this ReferenceType is to reference the Ctrl Task that executes a Ctrl Program Organization Unit.
The SourceNode of References of this type shall be an Object of the ObjectType CtrlProgramOrganizationUnitType or an instance of one of its subtypes.
The TargetNode of this ReferenceType shall be an Object of the ObjectType CtrlTaskType or one of its subtypes.