Re: [foxboro] FBM communication error

We have experienced this before and it was determined to be caused by the 
letterbug not having a good connection.  If your FBMs are in an area where 
temperature changes or vibration is prevalent, then this is a possibility.
 

Jim Kahlden
jkahlden@xxxxxxxx
Lower Colorado River Authority
Fayette Power Project
6549 Power Plant Road
La Grange, TX 78945
(979) 249-8514 (Ph)
(979) 249-8390 (Fax)

>>> RPPenndorf@xxxxxxx 09/08/03 07:16AM >>>
Hi list,

we encountered the following problem. 
A FBM01 stopped communicating with its host cp. The message in the error log 
was saying "PIO Bus Access Error on A & B".
So, we replaced the FBM and everything was fine like before. 
After that i took the supposedly broken FBM and have put it into a test rack 
and what a surprise sysmon was happy with it.
Any ideas what could have caused those communication problems despite of the 
fact that FBM has no hardware failure.

Best Regards    

Rocco Penndorf
Process Control Engineer / Acrylic Acid Plant
DOW - Boehlen
Tel.: +49 (0) 34206-8-7524
Fax: +49 (0) 34206-8-7522
E-Mail: rppenndorf@xxxxxxx




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Systems (formerly The Foxboro Company). Use the info you obtain here at
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