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Using the Manual Recalculation Feature
About this task
Note: If you perform a server-to-server recalculation on source and destination servers whose clocks are not synchronized, extra data points may appear and original data points may not be recalculated. To ensure this does not occur, ensure the time is synchronized on both source and destination servers.
Procedure
From the Historian Administrator, click the Collectors link to display the Collector Maintenance screen.
Select the Calculation Collector.
Click the Recalculate button.
The Recalculate Tags for Collector dialog box appears.
Enter a start date and time and end date and time.
Select a recalculation option:
Select the Recalculate All Tags for Collector option if you want to recalculate all tags for the specified time period.
Select the Recalculate Selected Tags Only option if you want to recalculate only specific tags during a time period.
If you selected the Recalculate Selected Tags Only option, enter tag browse criteria, click Browse, and select the desired tags (or all tags).
Click Recalculate.
A message box appears.
Click OK.
The recalculation runs and you return to the Collector Maintenance screen.
