[foxboro] Alarm History Update Problem

Hi All,
We have three WP51Ds connected with an AW51E on nodebus. We are facing alarm 
history update problem on alarm history display page on two of the three 
WPs. When we call alarm history page from Current Alarm Display (CAD) the 
following error message appears.

"Unable to open alarm history file for hist02 on 03AW02"


where, hist02 is our historian instance name and 03AW02 is letter ID of our 
AW51E. To rectify this problem we rebooted the WPs but the problem remains 
same. We cannot reboot the AW for some time due to some reason. Is there any 
way to get rid of this problem without rebooting AW. Kindly advise.

Thanks & Best Rgds,
Ali Ahmed Zahidi
Pakistan Refinery Ltd.
Karachi, Pakistan.

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