Re: [foxboro] Grouping for compounds

 
 
Not to mention turning on three different compounds to get a simple loop
running. Execution sequencing/timing would be nearly impossible too.
This may even lead to weird loop tuning instability depending upon the
sequence of execution.


 
 
Thank you,

Ken Heywood
Calibration Laboratory Manager

401 Industrial Drive
Plymouth MI 48170
http://www.processcontrolservices.com
KHeywood@xxxxxxxxxxxxxxxxxxxxxxxxxx
Telephone: 734-453-0620
Facsimile: 734-453-6008
Wireless: 508-241-2040
PCS means Providing Customer Satisfaction
 
--------------------------------------------------------------------------
PROCESS CONTROL SERVICES, INC. DISCLAIMER
This message (and any associated files) is intended only for the use of the 
individual or entity to which it is addressed and may contain information that 
is confidential, subject to copyright or constitutes a trade secret. If you are 
not the intended recipient you are hereby notified that any dissemination, 
copying or distribution of this message, or files associated with this message, 
is strictly prohibited. If you have received this message in error, please 
notify PCS immediately by replying to the message and deleting it from your 
computer. Messages sent to and from PCS may be monitored.

Internet communications cannot be guaranteed to be secure or error-free as 
information could be intercepted, corrupted, lost, destroyed, arrive late or 
incomplete, or contain viruses. Therefore, we do not accept responsibility for 
any errors or omissions that are present in this message, or any attachment, 
that have arisen as a result of e-mail transmission. If verification is 
required, please request a hard-copy version. Any views or opinions presented 
are solely those of the author and do not necessarily represent those of PCS.
--------------------------------------------------------------------------
 
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Corey R Clingo
Sent: Wednesday, September 24, 2008 12:29 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Grouping for compounds

This was done back in 2003 on a project in one of my plants.  1 compound

for analog, 1 for discrete, and one for CALC-ish blocks (!).

IMHO, it's a drag.


We don't have the alarm destination issues, as the 3 compounds all refer

to the same section of the plant.  But the switching back and forth 
between compounds in Select, and having to use full pathnames on every 
connection between different block types, is enough to convince me not
to 
do it again (we still have DM in this plant, so no tree views as in 
FoxSelect).


The fact that the blocks aren't in loop alphabetical order (except where

loop processing dictates otherwise), as is my personal standard
practice, 
further exacerbates the problems.


Corey Clingo
BASF Corporation






Jeff Hurt <thehurtman@xxxxxxxxx> 
Sent by: foxboro-bounce@xxxxxxxxxxxxx
09/24/2008 10:46 AM
Please respond to
foxboro@xxxxxxxxxxxxx


To
foxboro@xxxxxxxxxxxxx
cc

Subject
[foxboro] Grouping for compounds






We are in the design phase for a new Foxboro I/A project.  For our 
compounds, we were considering having one compound for each type of
block 
(AIN, COUT, etc).  It seems that this is a break from the norm, grouping

by system.  Any thoughts as to why grouping by block type would be a bad

idea?
 
Thanks,
Jeff
 



 
 
_______________________________________________________________________
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:             http://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:             http://www.freelists.org/list/foxboro
to subscribe:         mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe:      mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave

Other related posts: