Re: [foxboro] Fiber optic field bus on CP40?

We have used fibre optic fieldbus without issue.
You'll need end bus modems at each end. End Bus=20
Modem part number is P0903QF. You may need mid=20
bus modems if you have any drops in between the=20
ends. Mid Bus Modems part number is P0903QF. For=20
each modem pair you'll need a power distribution=20
unit. It's part number is P0904AU. The power=20
distribution unit will tap power of a 1x8, IE-32,
or you can wire it off a separate 24Vdc supply.

___________________________________
James J. H. Dykes
Tesoro Petroleum
Golden Eagle Refinery
Technical Services
Process Controls
150 Solano Way
Martinez Calif.
94553-1487
Mailto:jdykes@xxxxxxxxxxx=20


-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of stan
Sent: Wednesday, December 07, 2005 5:43 AM
To: Foxboro List
Subject: [foxboro] Fiber optic field bus on CP40?

We have a CP40 with copper filed bus that goes to 2 different remote
equipment rooms.

Over the years we have had intermittent comm problems with (fortunately
one
side at a time) this. We do have dark fiber to one of these 2 equipment
rooms.


I'm wondering what my options are for using this, in an effort to
reduce/eliminate these comm errors? I'm working on the theory that one
of
the existing copper cables has a problem of some sort (noise, grounding
etc.).


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