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Data Group

The following describes the historical data group settings specific to the WinCC Historical Values (OPC UAHA) connector.

Group Types

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The following group types are available:

Summary Values from XLReporter

This group type retrieves raw values from the historian and performs calculations on those values for reporting.

By default, summary values are calculated time weighted, and values are propagated based on the last known value. However, to change this so that summary values are calculated strictly on the data returned check use raw values.

Raw Values

This group retrieves values logged to the historian between the start and end time specified.

Group Settings

Setup Tab (Summary Values for XLReporter)

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The Retrieval settings define how data is retrieved for the calculations selected for the group. The following settings are available:

  • Retrieval Mode

  • This setting defines how data is retrieved from the historian. For WinCC only Raw Values are available.

  • Lead Time

  • The amount of time (in seconds) to retrieve data before the start time.

In this section: