Configure other options

To configure other options

1. On the Tools menu, click Options. The Options dialog box appears.

2. Click the Other tab.

   

3. In the Source area, specify the Historian tables from which data will be retrieved.

   Manual history tables	Normal SQL Server tables that are used to store data. These are the ManualAnalogHistory and ManualDiscreteHistory tables.
   Extension tables	Logical tables that are populated from the Historian data files. These tables support the Historian time domain extensions for handling data.
   Both	Select this option to retrieve data from both the manual and extension tables.

4. In the Legacy retrieval area, specify the retrieval mode for data that is retrieved from the Historians with a version earlier than 9.0.

   For information on how these settings interact with a retrieval style that you may have selected, see Working with Retrieval Styles.

   Use Delta retrieval for less than specified intervals	Select this check box to use delta retrieval mode for query time periods that are less than a specified amount.
   Interval for Analogs	The time period, in minutes, for which delta values are retrieved for analog tags. For greater time periods, cyclic retrieval is used instead. Valid values are 0 to 250,000. The default value is 15.
   Interval for Discretes	The time period, in minutes, for which delta values are retrieved for analog tags. For greater time periods, cyclic retrieval is used instead. Valid values are 0 to 10,000. The default value is 15.
   Maximum values to retrieve per tag	The maximum number of values to return per tag. Valid values are 0 to 30,000. The default value is 10,000.

5. Click OK.