5 Aggregate specific usage of Services

5.2 Aggregate data handling

5.2.2 ReadProcessedDetails structure overview

ReadProcessedDetails structure is formally detailed in OPC 10000-11. Table 6 outlines the components of the ReadProcessedDetails structure for the purposes of discussion in this document.
Table 6 – ReadProcessedDetails
Name | Description |
---|---|
ReadProcessedDetails | Specifies the details used to perform a “processed” history read. |
startTime | Beginning of period to read. |
endTime | End of period to read. |
processingInterval | Interval between returned Aggregate values. |
aggregateType[] | The NodeIds of the AggregateFunction Objects. AggregateFunction Objects indicate the list of Aggregates to be used when retrieving processed history. |
aggregateConfiguration | Aggregate configuration structure. |
useServerDefaults | If True the Server’s default values are used and any values specified for the other parameters are ignored. |
treatUncertainAsBad | See 4.2.1.2. |
percentDataBad | See 4.2.1.2. |
percentDataGood | See 4.2.1.2. |
useSlopedExtrapolation | See 4.2.1.2. |