This window provides properties for setting the maximum number and means for handling history records (capacity). You must
be logged in as a user with the appropriate write permissions for the Purge Config button (

) to display in the toolbar.
NOTE: Once history records have been purged, they cannot be retrieved unless they were previously backed up.
Figure 73. Purge Config window in a remote controller station
This window opens in a remote controller station when you click
Reports, click one of the history reports, and click the Purge Config button (

).
NOTE: The exact properties differ, depending on the type of history view associated with the Purge Config window.
| Property |
Value |
Description |
| Capacity |
number |
Defines the maximum number of history records allowed in the associated history table. What happens when the record count
reaches Capacity depends on the Full Policy setting.
|
| Full Policy |
drop-down list |
Determines what happens when the history table reaches its maximum CapacityStop restricts the table to the Capacity. After reaching this number, the system ignores new records.
Roll replaces the oldest records with newer records.
|