Purge Alarms Using Configuration Hub

Procedure

  1. Access Configuration Hub
  2. In the NAVIGATION section, under the Configuration Hub for Historian, select Alarms.
    The Alarms section appears.
  3. Select , and then select Purge Alarms.
    The Purge Alarms window appears.
  4. In the PROVIDE FILE NAME field, pro
  5. Enter values as described in the following table.
    Field Description
    GENERATED FROM Enter the start time for which you want to purge alarms.
    GENERATED TO Enter the end time for which you want to purge alarms.
    PROVIDE FILE NAME Enter the file name and location of the back up file that you want to create. This field is enabled only if you select the BACKUP ALARMS BEFORE PURGE? check box. By default, the backup location of the default data store is considered. And, the file name is in the following format: mm_dd_yyyy_hh_mm_ss. For example: 11_25_2022_11_23_26.zip. The time format followed is the 24-hour time notation.
    Note: This file naming convention for alarm backup is standard to Historian. Even if you use other date settings such as dd-mm, the file name will still be saved in the mm-dd format.

    The end time stamp in the file name indicates the time at which the alarms have been backed up but not the time till when the alarms are backed up. For example, suppose, at 8.00 am, you back up alarms for the past two hours, the backup will contain alarms from 6:00 am to 8:00 am but may not contain an alarm generated at 8:00 am. The last alarm may have been at 7:50 am. But the backup file name will have the time stamp of 8:00:00 along with the date.
    BACKUP ALARMS BEFORE PURGE? Select the check box if you want to back up alarms before purging.
  6. Select Purge.
    The alarms data is purged. A backup file is created if you have selected the BACKUP ALARMS BEFORE PURGE? check box.