Re: [foxboro] Follow-up ACCUM reset and Question
- From: "Badura, Tom" <tbadura@xxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 19 Feb 2009 15:23:47 -0600
Brian,
I have at times tied the Accum Block Resets back to the Calc block
inputs as feedback. This allows keeping the reset output set until all
blocks have been reset. I believe all blocks have always been in the
same CP and this really just addressed issues of Accum blocks running at
different periods or phases. I don't know if it would do anything for
your problem but would be easy to try.
Tom Badura
Plastics Engineering Company
920-458-2121 x3366
tbadura@xxxxxxxxxx
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of BrianLong
Sent: Thursday, February 19, 2009 12:26 PM
To: Foxboro
Subject: [foxboro] Follow-up ACCUM reset and Question
The original problem was trying to get an ACCUM block in two different
CP's
to reset at the same time. In our case setting the ACCUM blocks as the
first block in the compund in each CP and using the same calc block for
the
reset seemed to take care if it. There is about a 1 second difference
now.
New question, we're using a CALC block to reset the ACCUM blocks using
xxCPxx_STA:STATION.HOUR and .MINUTE parameters. The reset is set to
occur
at 23:58, looking a values in the historian the reset will occur
anywhere
between 23:58:08 and 23:58:16. This is not an issue but I was curious
why
it takes that long to process?
Thanks,
Brian Long
Arkansas Kraft
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