Re: [foxboro] Foxboro DCS to other DCS communication

Hello Michael.
        let me tell you a story about connecting Honeywell TDC 3000 and I/A 7:

*.- The first idea was to use OPC. It was discarded... I don't know =
why...

*.- The first attempt was to use modbus with rs485 interfaces both =
sides, but the communication didn't work.
*.- Then it was used modbus with rs232 interfaces and media converters =
to fiber optics (only three wires TX, RX, GRND), but the communication =
didn't work.
At that moment it was suspected that there was a problem with flow =
control or something like that, but an "in deep" analysis shows us that =
neither of both DCS can work as "full slave". It was tried to use =
Honeywell as Master and Foxboro as Slave. the problem is that the =
Honeywell DCS can't be configured as slave nor configure its retry time. =
This last condition "saturate" the Foxboro interface freezing the =
communication (I suppose).=20

*.- Finally, an incredible solution... a micrologix 1500 in the middle, =
with modbus prosoft interface and RS232 to fiber converters

What do you think about this?
I am sure, there must be better ideas.


-----Mensaje original-----
De: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]En
nombre de Jaudon, Mike
Enviado el: Lunes, 17 de Diciembre de 2007 15:25
Para: foxboro@xxxxxxxxxxxxx
Asunto: [foxboro] Foxboro DCS to other DCS communication


I was wondering if anyone is communicating between two different DCS
systems, such as Foxboro I/A Series and Delta V.
=20

If so,

1) How are you communicating between the two systems?

2) Are you performing controls across the communication link or just
sending non-control data back and forth?

=20

Michael L. Jaudon=20
TRONOX, LLC=20
(Technology Group-Hamilton, MS)=20
(662)343-8710 Office=20
(662)304-0313 Cell=20
mike.jaudon@xxxxxxxxxx=20

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=20


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