The GroupVersionwith DataType VersionTimereflects the time of the last layout change of the content of the NetworkMessagespublished by the WriterGroup. The VersionTime DataTypeis defined in OPC 10000-4. The GroupVersionchanges when one of the following parameters is modified:
- NetworkMessageContentMaskof this WriterGroup
- Offsetof any DataSetWriterin this WriterGroup
- MinorVersionof the DataSetof any DataSetWriterin this WriterGroup
- DataSetFieldContentMaskof any DataSetWriterin this WriterGroup
- DataSetMessageContentMaskof any DataSetWriterin this WriterGroup
- DataSetWriterIdof any DataSetWriterin this WriterGroup
The GroupVersionis valid for all NetworkMessagesresulting from this WriterGroup.