One interesting thing is, that with at least two of the vendors you mentioned
(Emerson/Fisher-Rosemount and, at some point in the near future I believe,
Honeywell), their Windoze-based systems aren't just for small/medium size
applications. They claim scalability from a one-rack SCADA setup to controlling
an entire large plant. Whether they can stand behind these claims is a topic
for another discussion, but they do have a head start.
I think Invensys will probably want to similarly unify their product lines, to
save money if nothing else. At least Wonderware has a good amount of Windoze
development experience, but their applications have been mostly smaller-scale,
low-cost stuff. Unfortunately, I think Invensys is not going to tell us this
untill the last minute, in order to avoid alienating their Solaris I/A installed
base. I also fear that we will be paying for development, in more ways than
one. And you are right; if their migration story is akin to the one for
Spectrum->I/A, we will probably be talking to other vendors as well.
Corey
John Miller <[EMAIL PROTECTED]> on 09/17/2001 01:55:06 PM
Please respond to Foxboro DCS Mail List <[EMAIL PROTECTED]>
To: 'Foxboro DCS Mail List' <Foxboro
cc:
Subject: RE: PLC Question
I've been wanting to ask this question for months, but the latest thread
regarding the new architecture makes it all the more relative. But first, is
Invensys abandoning I/A on Solaris? If all we're seeing is a refinement or
rethinking of Invensys' small/medium range product line, then I can continue
to recommend I/A for our new systems, provided that Solaris will still be
available in the future.
On the other hand, if I/A as we know it is going to be phase out, then
please, someone tell me why I shouldn't ask Emerson, Yokogawa or Honeywell
for a quote? I'm thinking that if I buy I/A, then eventually, I'll be pushed
into an advantage upgrade to their Wintel based system. If I go with
something like DeltaV, at least, I will be able to make the choice of a
Windoze based system that has logged a few hours running process facilities
as opposed to helping Invensys with development. Either way, unless someone
can convince me otherwise, I think I'll hold off making any more purchases
until the boys and girls in Foxboro can figure out what they're going to do.
John Miller
Hunt Refining Company
[EMAIL PROTECTED]
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