This ReferenceTypecan be used to expose that two different Nodesin the AddressSpacerepresenting the same hardware. It refines the RepresentsSameEntityAs ReferenceTypeand defines that the same entity in the real world shall be a piece of hardware. For example, it can be used to relate an Objectrepresenting a RFID reader based on the AutoID companion specification [1] with an Objectrepresenting the same RFID reader based on the IO-Link companion specification [2].

Note: The example given above is special since both specification use OPC UA Part 100 Devices [3] as base. In this case, the preferred modelling approach is provided in an annex of Part 100, where a composition approach is used.

The RepresentsSameHardwareAs is a concrete ReferenceTypeand can be used directly. It is a subtype of HierarchicalReferences. It is a symmetric Reference, that is, it provides the same semantic in both directions

The semantic of this ReferenceTypeis to relate two Nodesthat represent the same hardware.

The SourceNodeof Referencesof this ReferenceTypecan be of any NodeClass.

The TargetNodeof Referencesof this ReferenceTypecan be of any NodeClass.

Both, SourceNodeand TargetNodeshall represent the same entity in the real world.

RepresentsSameHardwareAs is formally defined in Table 8.

Table 8– RepresentsSameHardwareAsDefinition

Attributes

Value

BrowseName

RepresentsSameHardwareAs

InverseName

-

Symmetric

TRUE

IsAbstract

FALSE

References

NodeClass

BrowseName

Comment

Subtype of RepresentsSameEntityAs defined in 4.8

Conformance Units

Base Info RepresentsSameHardwareAs