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5.1.7.2 UMLAssociation

UMLAssociation represents an association between elements of a class and elements of another or the same class. The UMLAssociation is transformed to subtypes of OPC UA NonHierarchicalReferences (see Table 7).

Table 7 – Transformation rule of the elements of UMLAssociation

ISA-95

OPC UA

Description

UMLRole

SourceNode, TargetNode

UMLRole may be transformed into the restrictions of ReferenceType.

UMLCardinality

N/A

Standard ModellingRules only affect instance declaration specified by subtypes of Hierarchical References.

UMLAssociation Name

BrowseName

A name defined in ISA-95 may be changed. InverseName will be defined.

Instance Nodes that are referenced by NonHierarchicalReferences are not instantiated when an instance of an ObjectType or VariableType is created.

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