The PublishedDataItemsType is used to select a list of OPC UA Variables as the source for the creation of DataSets sent through one or more DataSetWriters.

The PublishedDataItemsType is formally defined Table 253.

Table 253 – PublishedDataItemsType definition

Attribute

Value

BrowseName

PublishedDataItemsType

IsAbstract

False

References

NodeClass

BrowseName

DataType

TypeDefinition

ModellingRule

Subtype of PublishedDataSetType defined in 9.1.4.2.

HasProperty

Variable

PublishedData

PublishedVariable‌DataType[]

PropertyType

Mandatory

HasComponent

Method

AddVariables

Defined in 9.1.4.3.2.

Optional

HasComponent

Method

RemoveVariables

Defined in 9.1.4.3.3.

Optional

Conformance Units

PubSub Model PublishedDataSet

The PublishedDataItemsType ObjectType is a concrete type and can be used directly.

The PublishedData is defined in 6.2.3.7.1. Existing entries in the array can be changed by writing the new settings to the Variable Value. A new Value shall be rejected with Bad_OutOfRange if the array size would be changed. Entries in the array can be added and removed with the Methods AddVariables and RemoveVariables.

The index into the list of entries in the PublishedData has an important role for Subscribers and for configuration tools. It is used as a handle to reference the entry in configuration actions like RemoveVariables or the Value in DataSetMessages received by Subscribers. The index may change after configuration changes. Changes are indicated by the ConfigurationVersion and applications working with the index shall always check the ConfigurationVersion before using the index.