Re: [foxboro] R: AB30FT and Control Logix PLC

Suzi,

Try going controlnet with 2CNBs in each processor rack for an "A" & 
"B" channel.  Use KFCs instead of a KF2s (not "officially" supported 
by Foxboro, but a lot of people are running this setup).  This should 
give you the redundancy requested.  If you have more questions I can 
give you a PLC guy to contact off list.

Regards,
David



At 08:26 AM 6/30/2006, you wrote:

>Hi Davide,
>
>Thank you for you prompt answer....
>
>What the customer wants is a system totally redundant: 02 AB30FT, two
>KFs-2 and 02 PLCs in redundancy mode....
>The problem is: to have this configuration is necessary to have one DH+
>module at PLC side: so looking at PLC side we have: three racks: one
>with one PLC, another with other PLC (this guarantee different powers
>redundancy) and the DH+ module located in another rack...=20
>
>This configuration doesn't work with I/A. The only way to communicate
>with PLC is moving DH+ to the same rack of PLC. But in this scenario
>according AB people the redundancy of PLC will not work....
>
>The explanation is: for I/A works, is necessary that PLC be located at
>slot 0. The PLC 2,3, 5 and SLC05/04 have this characteristic. All are
>located at slot 0....
>Regards,
>Suzi
>
>
>-----Original Message-----
>From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
>On Behalf Of Crivellotto, Davide
>Sent: Friday, June 30, 2006 9:47 AM
>To: foxboro@xxxxxxxxxxxxx
>Subject: [foxboro] R: AB30FT and Control Logix PLC
>
>Suzi,
>I was involved in setting up communication between I/A and Control =3D
>Logix, but with FBM224 (modbus), not AB30FT.
>The problem we faced was that, by default, communication is REDUNDANT, =
>=3D
>not FT. In other words, every time only one line can reply to DCS =3D
>queries.
>
>What is the configuration of your Control Logix?
>
>
>Davide
>
>
>-----Messaggio originale-----
>Da: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] =
>=3D
>Per conto di Omori, Suzi
>Inviato: Friday, June 30, 2006 2:21 PM
>A: foxboro@xxxxxxxxxxxxx
>Oggetto: [foxboro] AB30FT and Control Logix PLC
>Priorit=3DE0: Alta
>
>Hello.
>
>Has anyone set up communication between AB30FT and Control Logix PLC in
>Redundancy configuration ?
>
>AB30FT communicating with only one PLC works fine.. The problem is when
>we have 2 Control Logix.
>
>Has anyone tried this?
>Any other suggestions? The customer is willing to change hardware if
>necessary to keep the original idea that was to have PLC in redundancy
>configuration "talking with" our System.
>
>Thank you
>
>Suzi
>
>
>
>=3D20
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>=20
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>
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>Systems (formerly The Foxboro Company). Use the info you obtain here at
>your own risks. Read http://www.thecassandraproject.org/disclaimer.html
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