Annex G (normative) Dictionary Reference ToC

G.4 URI based dictionary entry type ToC Previous Next index

The UriDictionaryEntryType defined in Table G.6 is used to represent dictionary entries that use URIs as unique identifiers.

Table G.6 – UriDictionaryEntryType Definition

Attribute Value
BrowseName UriDictionaryEntryType
IsAbstract False

Subtype of the DictionaryEntryType defined in OPC 10000-5.

The identifier in the respective external dictionary shall be a unique URI string. This identifier is used for the NodeId and the BrowseName Attributes of instances of the DictionaryEntryType. The IdentifierType of the NodeId shall be STRING_1 with the identifier from the external dictionary as the value.

The namespace “http://opcfoundation.org/UA/Dictionary/URI” shall be used for instance of the UriDictionaryEntryType. Subtypes may define different namespaces.

The identifier shall be immutable; meaning that it shall not be reassigned to a different dictionary entry within the scope of the namespace in future versions. Data dictionaries may be publicly defined by standard bodies such as IEC or proprietary (e.g. vendor-specific dictionaries).

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