Are you sure that Child-ECB's should be included in the 120 count ?
As I have serviced sites with at least 15 parent IT-FBM-ECB's c/w apx 80
Child-ECB's not to mention about 25 regular ECB's; for a total of only apx
120 counting your way and have had no problems.
Peter
----------
From: Jaudon, Michael
Sent: Tuesday, February 20, 2001 4:01 PM
To: '[EMAIL PROTECTED]'
Cc: Killebrew, Jimmy
Subject: Number of ECB's per CP40
I have been told by Foxboro that the total number of ECB's per CP40
should
never exceed 120. Our problem is we use a large number of
intelligent
transmitters and each intelligent transmitter requires an ECB. If
you use
FBM 18's that would mean that the maximum number of FBM's per CP
would be 13
(9ECB's per FBM18). I've always been told that a CP40 could handle
48 FBMs
with no more than 24 per fieldbus isolator
The only performance issue I have seen is the Intelligent Field
Device
Configurator (IFDC) will not write information to the transmitter.
Has anyone ever encountered this problem and what was your
solution?... or
is this really a problem?
If it is a problem would a CP60 help?
Regards,
Michael L. Jaudon
Kerr-McGee Chemical LLC
(662)343-8710
[EMAIL PROTECTED]
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