Re: [foxboro] DST on our New P91
- From: "Jenckes, Jim R." <JJenckes@xxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Wed, 29 Oct 2008 07:30:08 -0800
Larry,
There are two items on the IPS Global Client Support site that you may
want to take a look at. The first is a "Customer Advisory" on DST
issues. It is dated 10-27-08. Also, there is a QF1008617 that also may
be of value to you. I can email you both if you don't have access or
didn't receive the QF notice.
One thing that the Advisory suggests is shutting down your historian one
hour before you adjust the clock backwards. After the time adjustment
restart your historian.
As far as automating the process I don't believe it's possible.
Regards,
Jim Jenckes
Process Controls
Tesoro Kenai Refinery
PO Box 3369
Kenai, AK 99611
907-776-3865
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Larry Mantei
Sent: Friday, October 24, 2008 8:40 AM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] DST on our New P91
On our old 51B system our last Process Dude set up a time sync to our PI
sever (Windows). It checked the PI server time and verify that they
synced, if not reset the Foxboro box to match. This handle the Daylight
Savings time change fine.
I was told that this would not work on the new machine. As in we would
lose data in our AIM* historian (overwrite or leave a one hour gap
depending on spring or fall). We only use the AIM * for an operator
visual info at their control console trending and such. We use PI as our
data collection and report historian, (one reason because it can handle
DST with out overwriting data.
Anyway, our current plan is to just have the operator reset system time
@ 2:00AM on 11/10. Any ideas on how to do this better or automate it as
we had in the past. Since these are both are windows machines I figure
it should be pretty easy.
Our current settings on our machines are P91 GMT with the time set to
local. PI Server GMT - 9:00 (Alaska) and set to auto adjust DST.
Thank you for your support.
Larry Mantei
Process Control
Fairbanks Gold Mining
PO Box 73726
Fairbanks, Alaska 99707-3726
(907)488-4653 ext. 2306
larry.mantei@xxxxxxxxxxx
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