Re: [foxboro] ACCUM block OUT parameter and omget
- From: steve.shimp@xxxxxxxxxxxxxx
- To: foxboro@xxxxxxxxxxxxx
- Date: Tue, 4 Jun 2002 07:07:22 -0400
I honestly don't know what to say about totalizing values higher than
8,192,000. I tracked this information down because I was worried that we
would have some ACCUM blocks which might end up with very high numbers, so
I specifically looked to see what the was documented as the high limit.
Too bad that the double precision float being used for totalizing inside
the block cannot be accessed, or at least it isn't documented.
Steve Shimp
Senior Systems Analyst
ExxonMobil Paulsboro Lube Plant
Phone: 856-224-5059
Cell: 609-820-8501
Fax: 856-224-5030
Email: steve.shimp@xxxxxxxxxxxxxx
Corey R Clingo
<clingoc@basf-corp To: foxboro@xxxxxxxxxxxxx
.com> cc:
Sent by: Subject: Re: [foxboro] ACCUM
block OUT parameter
foxboro-bounce@fre and omget
elists.org
06/03/02 07:05 PM
Please respond to
foxboro
Thanks for the pointer, but reading the docs raises other questions. They
say that the max value is 8192K, yet I have several totalizers wih .OUT
values that go to 9 digits. I checked out the faceplate, and it does
reference the .OUT parameter, but uses formatting to get 10 places plus a
decimal place. Does this mean that every digit after 7 is bogus?
Corey
>
-------------------------------------------------------------------------------------------------------------------------------|
Corey,
According to B0193AX, Rev. K, "... the block saves the running accumulator
in extended precision format to minimize truncation errors. However, the
block stores the output (OUT) as a single precision float of 7-digit
resolution with a maximum value of 8,192,000 (8192 K) and a
user-specifiable range."
I was just reviewing the specs of the ACCUM block for a small project I'm
involved with.
Steve Shimp
Senior Systems Analyst
ExxonMobil Paulsboro Lube Plant
Phone: 856-224-5059
Cell: 609-820-8501
Fax: 856-224-5030
Email: steve.shimp@xxxxxxxxxxxxxx
_______________________________________________________________________
This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
foxboro mailing list: //www.freelists.org/list/foxboro
to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
_______________________________________________________________________
This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
foxboro mailing list: //www.freelists.org/list/foxboro
to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
Other related posts:
