On Sat, 10 Dec, Ned Simmons wrote:
Its intended purpose is as an interface to a PLC (programmable logic
controller) and it does communicate via some sort of ASCII protocol. I'm
not familiar with this unit, but have used several made by Maple
Systems. Maple's stuff is quite flexible and can be configured to talk
to devices other than PLCs - motion controllers, VFDs, etc. This Maple
doc may give you some clues about your device...
http://www.maple-systems.com/1033/10330073.pdf
More docs here...
http://www.maple-systems.com/cntrllrs_ezw.htm
Some of the keywords I'd use to Google for more info would be, in
various combinations: OIT HMI PLC
Thanks. After two hours of digging last night I found out some decent
info. I still am in a bit of a haze about PLC's in general, but I get the
jist. I also get that they are systems built out of lots of building
blocks with communication bus(es) and are generally pretty much for custom
control systems.
Are you sure you can download the software? It's unusual to get
programming software for industrial controls for free. There's usually
at least a nominal charge.
Yeah, he
http://www.geindustrial.com/cwc/gefa...greyline-d.htm
GUS Level 2 appears to be a software loader that will load it with a
commucations protocol from a list (stuff like Allan Bradley protocols,
Mitsubishi, Series 2, Omron, etc). I found a PDF explaining the Series 2
protocol and it looks like it could be used without a *lot* of effort to
make this thing a generic interface to something else. There's a download
for a MicroGreyline (which are part number 1024 and 1025, whereas I have a
2125) that makes it a dumb terminal. I may try putting that on mine to see
if it works...if so, that would be *ideal*.
I can't find any code out there that speaks Series 2 already to poke at,
but then again, googling for "series 2" or "series two" is WAY too generic.
Even adding it to things like PLC didn't seem to help. So either it
doesn't exist or I ain't gonna find it without some help. I don't *need*
it, but my searching turned up several open source projects to speak some
of the other protocols out there, but none seemed to match up with any in
this list I have. And none in the list for the program that supports this
device say "dumb terminal."
Closest of what I can tell are the Series
2, but there's also a "Series 2 slave" which might be "dumber."
--Donnie
--
Donnie Barnes
http://www.donniebarnes.com 879. V.