Re: [foxboro] Any experiences with FBM224
- From: "Johnson, Alex (Foxboro)" <ajohnson@xxxxxxxxxxx>
- To: 'Ken Heywood ' <kheywood@xxxxxxxxx>, "'foxboro-bounce@xxxxxxxxxxxxx '" <foxboro-bounce@xxxxxxxxxxxxx>, "'foxboro@xxxxxxxxxxxxx '" <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 2 Sep 2004 23:06:35 -0400
You can take the output of an AOUT block and connect it to a DCI real output
block. You could fan it out to two such.
Is that what you are asking?
AJ
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
To: foxboro@xxxxxxxxxxxxx
Sent: 9/2/04 9:46 PM
Subject: Re: [foxboro] Any experiences with FBM224
Alex,
Will the AOUTR block work with the DCI?
Ken
-----Original Message-----
From: Johnson, Alex (Foxboro) [mailto:ajohnson@xxxxxxxxxxx]
Sent: Thu 9/2/2004 8:11 PM
To: 'foxboro@xxxxxxxxxxxxx'
Cc:
Subject: Re: [foxboro] Any experiences with FBM224
The implementation under the CP270 will be much more complete,
but even so
you can build an redundant Modicon interface with CP60 and a
pair of
FBM224s.
While this interface is not transparently redundant, it will be
fully
redudant assuming the remote device has two ports.
Buy two FBM224s, configure each to scan the PLC. Take the data
from each and
connect the DCI blocks to a SSEL. Configure the SSEL to handle
two inputs, a
selection (H or L), and to drop the signal that is bad.
Voila!
The output of the SSEL can feed an AIN or CIN if you wish to
alarm it.
You can do something similar with outputs.
You can also control the scanning to turn off the "extra"
interface until
there is a failure.
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