Re: [foxboro] FBM231 highscore per FCP270

V8.4 has added alarm limits and SCIs to the DCI blocks.

In general, the DCI blocks are much more functional in V8.4.

I know you aren't interested in new configuration tools, but part of our
solution is the user of more powerful configurators to simplify details.
At some point, you really should try them.


Regards,
 =

Alex Johnson
Invensys Process Systems
10900 Equity Drive
Houston, TX 77041
713 329 8472 (voice)
713 329 1600 (switchboard)
713 329 1944 (fax)
alex.johnson@xxxxxxxxxxxxxxxx
http://ips.invensys.com =


-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Corey R Clingo
Sent: Wednesday, May 28, 2008 7:32 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] FBM231 highscore per FCP270

Along these lines, are there any plans to improve the state of the DCI =

block world?  Or roll their functionality into AIN, CIN, etc.?  I for
one =

find it a pain to have to configure them and then add on AINs and such
as =

well to get the functionality I'm used to on non-"intelligent" I/O.  I =

have heard the official line about using IACC and control strategy =

templates, etc., but I don't have IACC and don't plan to use it.  And I =

suspect everyone will be using DCI more and more as the field devices
get =

more intelligent.

Corey Clingo
BASF Corporation






"Johnson, Alex P \(IPS\)" <alex.johnson@xxxxxxxxxxxxxxxx> =

Sent by: foxboro-bounce@xxxxxxxxxxxxx
05/28/2008 04:09 PM
Please respond to
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Re: [foxboro] FBM231 highscore per FCP270






The limiting factor is not the baud rate of the PIO bus, but rather the
protocol used to access the FBMs. A 2Mbps link can easily move more than
125K Bytes per second and that's more data than one would need for even
a large number of FDSI FBMs.

However, DCI (RIN, ROUT, BIN, BOUT, etc.) blocks are relatively
inefficient for whatever reason so you do see a higher than expected I/O
loading with FDSIs.

The latest FCP270 spreadsheet is pretty accurate on DCI blocks as I
understand it.


Regards,
 =3D

Alex Johnson
Invensys Process Systems
10900 Equity Drive
Houston, TX 77041
713 329 8472 (voice)
713 329 1600 (switchboard)
713 329 1944 (fax)
alex.johnson@xxxxxxxxxxxxxxxx
http://ips.invensys.com =3D




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