uaCap:HistoricalData Aggregates

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URN:          https://opcfoundation.org/wiki/index.php/HistoricalData/Aggregation

Description
Aggregates are used to derive values from raw data over a defined time range. There are several defined aggregates as well as the ability for vendors to provide custom aggregates.

Usage Considerations

  • Interpolated data is required.
  • Raw historical data needs to be normalized before it can be used.
  • Summarized trending and reporting.

Conformance Testing

Client Server

Read from history by specifying one of the supported aggregates

Support aggregate processing