Data Group
The following describes the historical data group settings specific to this connector. For information on common features such as the Columns and Time Period Tabs, please refer to Historical Data Groups documentation.
Group Type
The following group types are available for this connector:
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Summary Values from XLReporter
Summary values are calculated by XLReporter. Select use raw values to base calculations on raw values otherwise they will be based on sampled values from the Server.
Raw Values
Numeric values from the Server
Custom Values
Custom values queried from any table/view in the historian database using the Database Group.
Group Settings
Setup Tab
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Database
The Database settings indicate the table and column(s) for the timestamp. If Definition is set to Connector, the settings from the connector are used. If set to Specific, any appropriate table in the database can be selected.
Retrieval
The Retrieval settings is only enabled for summary values.
Retrieval Mode
This setting defines how data is retrieved from the historian. Only Raw Values are available.L
Lead Time
The amount of time (in seconds) to retrieve data before the start time.
Filters Tab
If the Perform by Server option is checked, any filter configured in this tab is put into the WHERE clause of the query sent to retrieve data for the group. Otherwise, the configured filtering is performed by the reporting engine after the values are returned. It is recommended to leave this setting checked as the performance is much better.