On Wed May 3 16:21:56 2000 wrote...
>
>
>A couple of other points to note with the ABstation
>
>1. It is physically attached to the PLC-5. Therefore, although you may engineer your
>software so that the box is a
>"passive" interface, if there is a problem with the ABstation, your going to have to
>shut down the PLC-5 to replace the
>ABstation.
Yes, we had thoght this one thu.
>2. Currently, we have worked with Foxboro for approximately 2 years on a problem that
>we are having with one (of 4) of
>our ABstations. The problem is that the ABstation stops sending alarm messages. So,
>after a while, no PLC derived alarms
>are sent to the WPs! Foxboro development has been on site and claims that they now
>understand the problem but we are
>still waiting for a fix. We have also worked with them to develop about three other
>quick fixes. We don't understand why
>only one of our stations exhibits this problem but, after identifying the problem,
>Foxboro has said it is a problem with
>all ABstations.
Interesting.
>3. We have since chosen the initegrator 30 for our immediate plc communication
>standard. I'm not saying "don't buy one,
>I'm only suggesting that you consider these issues"
I am prestnly leaning in that direction.
>
>One point about the micro I/A solution...
>This seems like a good approach that could overcome some of the communication
>limitations of the INI30. Realize that
>this is a Version 6.2 product and I was told there were not many (any) "in the field"
>
>for what it's worth.
I had not really considered this solution, because I am not fmialiar
with it.
Thanks for the input.
Stan Brown [EMAIL PROTECTED] 843-745-3154
Charleston SC.
--
Windows 98: n.
useless extension to a minor patch release for 32-bit extensions and
a graphical shell for a 16-bit patch to an 8-bit operating system
originally coded for a 4-bit microprocessor, written by a 2-bit
company that can't stand for 1 bit of competition.
-
(c) 2000 Stan Brown. Redistribution via the Microsoft Network is prohibited.
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