This abstract ObjectType defines 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 DictionaryEntryType defining additional Properties and Objects as necessary and specified by the standard body (e.g. further definitions, versioning information etc.).

An instance of such a concrete dictionary entry ObjectType represents 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 DictionaryEntryType can be nested in order to create hierarchies of dictionary entries