This ObjectTypeis the base type for PublishedDataSets. It defines the metadata and the configuration version of the DataSetssent as DataSetMessagesthrough DataSetWriters.

The PublishedDataSetTypeis the base type for configurable DataSets. Derived types like PublishedDataItemsTypeand PublishedEventsTypedefines how to collect the DataSetto be published. For PublishedDataItemsTypethis is a list of monitored Variables. For PublishedEventsTypethis is an Eventselection. The list of monitored Variables or the list of selected EventFieldsdefines the content and metadata of the PublishedDataSetType Object.

If the content of the DataSetis defined by a product specific configuration and the source of the DataSetis not known, the PublishedDataSetType can be used directly to expose the PublishedDataSetin the AddressSpaceof the Publisher.

The PublishedDataSetTypeis formally defined in Table 105.

Table 105– PublishedDataSetType Definition

Attribute	Value
BrowseName	PublishedDataSetType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Modelling Rule
Subtype of BaseObjectType defined in OPC 10000-5.
DataSetToWriter	Object	<DataSetWriterName>		DataSetWriterType	Optional‌Placeholder
HasProperty	Variable	ConfigurationVersion	Configuration‌VersionDataType	PropertyType	Mandatory
HasProperty	Variable	DataSetMetaData	DataSetMeta‌DataType	PropertyType	Mandatory
HasProperty	Variable	DataSetClassId	Guid	PropertyType	Optional
HasComponent	Object	ExtensionFields		ExtensionFieldsType	Optional

The PublishedDataSetType ObjectTypeis a concrete type and can be used directly. It can be used to expose a PublishedDataSetwhere the data collection is not visible in the AddressSpace.

The Objecthas a list of DataSetWriters. A DataSetWritersends DataSetMessagescreated from DataSetsthrough aMessage Oriented Middleware. The link between the PublishedDataSet Objectand a DataSetWritershall be created when an instance of the DataSetWriterTypeis created. The DataSetWriterTypeis defined in 9.1.7.2. If a DataSetWriteris created for the PublishedDataSet, it is added to the list using the ReferenceType DataSetToWriter. The DataSetToWriter ReferenceTypeis defined in 9.1.4.2.5. If a DataSetWriterfor the PublishedDataSetis removed from a group, the Referenceto this DataSetWritershall also be removed from this list. The group model is defined in 9.1.6.

The Property ConfigurationVersionis related to configuration of the DataSetproduced by the PublishedDataSet Object. The PublishedDataSetparameters affecting the version are defined in the concrete types derived from this base type. The ConfigurationVersionDataTypeand the rules for setting the version are defined in 6.2.2.1.5.

The Property DataSetMetaDataprovides the information necessary to decode DataSetMessageson the Subscriberside if the DataSetMessagesare not self-describing. The information in this Propertyis automatically updated if the ConfigurationVersionis changed based on DataSetconfiguration change. The DataSetMetaDataTypeis defined in 6.2.2.1.2. The Namefield in the DataSetMetaDataTypeshall match the name of the PublishedDataSetType Objectif the DataSetMetaDatais not based on a DataSetClass.

The MajorVersionpart of the ConfigurationVersioncontained in the DataSetMessagemust match the ConfigurationVersionof the DataSetMetaData available on the Subscriber side.

The DataSetClassIdis the globally unique identifier for a DataSetClass. The optional Propertyshall be present if the DataSetClassIdof the DataSetMetaDatais not null. If the DataSetClassIdis set, the Publishershall reject any configuration changes that change the DataSetMetaData.

The ExtensionFields Object allows the configuration of fields with values to be included in the DataSetin case the existing AddressSpaceof the Publisherdoes not provide the necessary information. The extension fields are added as Propertiesto the ExtensionFields Object.For PublishedDataItemsTypebase PublishedDataSets, an extension field is included as a Variablein the published DataSet. For PublishedEventsTypebase PublishedDataSets, an extension field is included into the SelectedFieldsfor the DataSet.

The ExtensionFieldsTypeis formally defined in Table 106. It allows the configuration of fields with values to be included in the DataSetin case the existing AddressSpaceof the Publisherdoes not provide the necessary information.

Table 106– ExtensionFieldsType Definition

Attribute	Value
BrowseName	ExtensionFieldsType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Modelling Rule
Subtype of BaseObjectType defined in OPC 10000-5.
HasProperty	Variable	<ExtensionFieldName>	BaseDataType	PropertyType	OptionalPlaceholder
HasComponent	Method	AddExtensionField	Defined in 9.1.4.2.3.		Mandatory
HasComponent	Method	RemoveExtensionField	Defined in 9.1.4.2.4.		Mandatory

The ExtensionFieldsType ObjectTypeis a concrete type and can be used directly.

The configured list of extension fields is exposed through Propertiesand managed through the Methods AddExtensionFieldand RemoveExtensionField. An ExtensionFieldis not automatically included in the DataSet. The ExtensionFieldmust be added to the DataSetafter creation.

Metadata that normally appear in message headers can be included to the body by adding extension fields with well-known QualifiedNames. These well-known QualifiedNamesare shown in Table 107. The qualifying namespace is the OPC UA namespace.

Table 107– Well-Known Extension Field Names

Name	Type	Description
PublisherId	BaseDataType	The PublisherIdfrom the Connection Object.
DataSetName	String	The Namefrom the DataSetMetaData.
DataSetClassId	Guid	The DataSetClassIdfrom the DataSetMetaData.
MajorVersion	UInt32	The MajorVersion from the ConfigurationVersion
MinorVersion	UInt32	The MinorVersion from the ConfigurationVersion
DataSetWriterId	BaseDataType	The DataSetWriterIdfrom the DataSetWriterTransport Object.
MessageSequenceNumber	UInt16	The sequence number from the DataSetMessage.

If a well-known name is used the value placed in the message body is dynamically generated from the current settings. The value set in the AddExtensionField Methodis ignored. Subtypes of DataSetWriterTransportTypemay extend this list.

This Methodis used to add a Propertyto the Object ExtensionFields.

The Clientshall be authorized to modify the configuration for the PubSubfunctionality when invoking this Methodon the Server.

Signature

AddExtensionField(

[in]QualifiedNameFieldName

[in]BaseDataTypeFieldValue

[out]NodeId FieldId

);

Argument	Description
FieldName	Name of the field to add.
FieldValue	The value of the field to add.
FieldId	The NodeIdof the added field Property.

Method Result Codes

ResultCode	Description
Bad_NodeIdExists	A field with the name already exists.
Bad_InvalidArgument	The Serveris not able to apply the Name. The Namemay be too long or may contain invalid characters.
Bad_UserAccessDenied	The Sessionuser is not allowed to configure the Object.

This Methodis used to remove a Propertyfrom the Object ExtensionFields.

The Clientshall be authorized to modify the configuration for the PubSubfunctionality when invoking this Methodon the Server.

Signature

RemoveExtensionField(

[in]NodeId FieldId

);

Argument	Description
FieldId	The NodeIdfield Propertyto remove.

Method Result Codes

ResultCode	Description
Bad_NodeIdUnknown	A field with the NodeIddoes not exist.
Bad_NodeIdInvalid	The FieldIdis not a NodeIdof a Propertyof the ExtensionFieldsType Object.
Bad_UserAccessDenied	The Sessionuser is not allowed to configure the Object.

The DataSetToWriter ReferenceTypeis a concrete ReferenceTypethat can be used directly. It is a subtype of the HierarchicalReferences ReferenceType.

The SourceNodeof Referencesof this type shall be an Objectof ObjectType PublishedDataSetTypeor an ObjectTypethat is a subtype of PublishedDataSetTypedefined in 9.1.4.2.1.

The TargetNodeof this ReferenceType shall be an Objectof the ObjectType DataSetWriterTypedefined in 9.1.7.1.

Each DataSetWriter Objectshall be the TargetNodeof exactly one DataSetToWriter Reference.

Serversshall provide the inverse Referencethat relates a DataSetWriter Objectback to a PublishedDataSetTypeObject.

The representation of the DataSetToWriter ReferenceTypein the AddressSpaceis specified in Table 108.

Table 108– DataSetToWriter ReferenceType

Attributes	Value
BrowseName	DataSetToWriter
InverseName	WriterToDataSet
Symmetric	False
IsAbstract	False
References	NodeClass	BrowseName	Comment
Subtype of HierarchicalReferences defined in OPC 10000-5.