Re: [foxboro] Optical Field Bus / NCNI's
- From: "Schaff, Alan J." <Alan.Schaff@xxxxxxxxxxxxx>
- To: "'foxboro@xxxxxxxxxxxxx'" <foxboro@xxxxxxxxxxxxx>
- Date: Mon, 2 Feb 2004 05:04:43 -0700
If I understand your installation your upgrading some 51B boxes. We recently
have done the same thing but used the same
DNBI that the 51B box used and saved money on the NCNI/RCNI stuff. We went
this route since there are no future plans
to upgrade the system to the Ethernet Nodebus. We just wanted to upgrade the
old hardware. Not sure if this helps but
it may give you another alternative. I have a document that I got from Foxboro
showing the wiring diagram for each type
of 51A/B/C box, your field service guy should be able to get you a copy.
Alan Schaff
Honeywell Nylon
-----Original Message-----
From: Ajay.Tathgir@xxxxxxx [mailto:Ajay.Tathgir@xxxxxxx]
Sent: Saturday, January 31, 2004 1:22 AM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] Optical Field Bus / NCNI's
Hi! All
Wanted to know how long can i run a field bus using the optical cable. The
issue is that the present system is at location 0, and there is another
unit around 1.5 kms away. I was thinking of putting the CP's at location 0
& using a optical field bus to connect to FBI's around 1.5 kms away. The
1.5 could be 2.5 also.
Or should i create a extended node and connect the same using NCNI's
through a optical link. In the present system i've four 1 X 8 MS, and i'll
have to add two 1 X 8 MS at the new location.
It would be good to know if there are issues involved with any of the above
configurations.
The system is 6.1.2 Unix having 51B stations.
TIA & Regards
Ajay Tathgir
Reliance Industries Limited
Mumbai - India
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