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Scope: Core (OPC-10000-*) All specs

5 result(s) for DateTime.MinValue

OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

6.5.2.1 ReadEventDetails structure details

maximum. startTime UtcTime Beginning of period to read. The default value of DateTime.MinValue indicates that the startTime is unspecified. endTime UtcTime End of period to read. The default value ... DateTime.MinValue indicates that the endTime is unspecified. Filter EventFilter A filter used by the Server to determine which HistoricalEventNode should be included. This parameter shall be specified and at least
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

6.5.3.1 ReadRawModifiedDetails structure details

FALSE. startTime UtcTime Beginning of period to read. Set to default value of DateTime.MinValue if no specific start time is specified. endTime UtcTime End of period to read ... default value of DateTime.MinValue if no specific end time is specified. numValuesPerNode Counter The maximum number of values returned for any Node over the time range. If only one time
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

6.5.3.2 Read raw functionality

then all the values in the range are returned. A default value of DateTime.MinValue (see Table 35 ) is used to indicate when startTime or endTime is not specified. When only
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

A.2 Determining the first or last historical data point

query using ReadRawModifiedDetails parameters to get the first/oldest value: returnBounds=false numValuesPerNode=1 startTime=DateTime.MinValue+1 second endTime= DateTime.MinValue If the last or most recent value in history is required ... following query: returnBounds=false numValuesPerNode=1 startTime=DateTime.MinValue endTime= DateTime.MaxValue The DateTime.MinValue indicates that no specific time is specified. This is a special value that a Server must be aware
OPC-10000-12 – OPC Unified Architecture - Part 12: Discovery and Global Services

7.10.17 TransactionDiagnosticsType

started The EndTime Property indicates when transaction ended. It has a value of DateTime.MinValue if the transaction has not completed. The Result Property indicates the overall transaction result