ConnectionConfigurationSet and DataSetWriter – OPC Unified Architecture – Part 81: UAFX Connecting Devices and Information Model

E.6.4 ConnectionConfigurationSet and DataSetWriter

As illustrated in Figure E.28, the configuration of the DataSetWriter can be derived from the ConnectionEndpointParameter and the PubSubCommunicationFlow.

Figure E.28 – ConnectionConfigurationSet and DataSetWriter

The ToDataSetWriter Reference can be derived from either the PreconfiguredPublishedDataSet or from a custom PublishedDataSet within the PubSubConfiguration. The PublishedDataSet contains the OutputVariableIds specified in the ConnectionEndpointParameter.

The DataSetWriter element MessageSettings is transport-specific. For UDP-UADP, the DataSetMessageContentMask, ConfiguredSize, NetworkMessageNumber, and DataSetOffset are derived from the HeaderLayoutUri. For UADP-Periodic-Fixed ConfiguredSize, NetworkMessageNumber and DataSetOffset of the DataSetMessage are determined by the generator of the PubSubConfiguration.

For UADP-Periodic-Fixed, the KeyFrameCount is set to 1.

For UDP_UADP, no DataSetWriterProperties or TransportSettings are defined.