Data Group
The following describes the historical data group settings specific to the VTScada Alarms connector.
Group Types
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For VTScada Alarms the following group types are available:
Raw Values retrieves alarms logged between the start and end time specified.
Custom Values opens the Database Group builder where a query can be configured to retrieve data from any table available in the database connected to by the connector.
Group Settings
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 the database 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.