This abstract ObjectTypedefines the minimum information needed to identify the data dictionary entry for a respective standard (e.g. IEC Common Data Dictionary). It is formally defined in Table 1.

Concrete dictionary entry types shall inherit from the abstract DictionaryEntryTypedefining additional Propertiesand Objectsas necessary and specified by the standard body (e.g. further definitions, versioning information etc.).

An instance of such a concrete dictionary entry ObjectTyperepresents an entry in an external data dictionary.

Table 1– DictionaryEntryType definition

Attribute

Value

BrowseName

DictionaryEntryType

IsAbstract

True

References

NodeClass

BrowseName

DataType / TypeDefinition

ModellingRule

Subtype of the BaseObjectType defined in OPC 10000-5.

HasComponent

Object

<DictionaryEntryName>

DictionaryEntryType

OptionalPlaceholder

Conformance Units

Address Space Dictionary Entries

Instances of the DictionaryEntryTypecan be nested in order to create hierarchies of dictionary entries