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From: gmaggro (gmaggrorogers.com)
Date: Mon Jan 07 2008 - 18:47:28 CST
> For example: http://www.modbus.pl/download/zxy66/v19/modbus_perl_client.zip
Thank you for the links.
I like the following: http://www.modbusdriver.com/modpoll.html
"modpoll is a command line based Modbus master simulator and test
utility". There's binaries for a few different platforms. Enough to get
someone speaking modbus/tcp over the wire and the ability to read device
registers, coils, what have you.
> you spend 2 minutes with google you'll find more then you'll need.
Agreed, but part of what I want to help accomplish is a weeding of the
crud, saving folks some time. Hopefully not annoy people with too much
'cocking stupid' crap.
> Anyways, enjoy your research...
Oh, I am! That Kohler Power systems box, turns out, wasn't as robust as
I hoped. It was built around a Lantronix Xport embedded ethernet device
server, I think an Xport-485
At first it held up a couple days, but after pounding it with random
crud (on various ports) 502/tcp stopped showing up. Attempts to get 502
to show up again, by multiple power cyclings and leaving it off for
extended periods, made no difference. The only things that continued to
show up reliably were 69, 9999, 80 and 161.
Tried to find a way to reset it, either by the configuration menus or
hardware (I took the case off) but had no luck. Attempted a reset via
upgrading its firmware with the 'Device Installer' util (came with it on
CD), but wound up bricking it so I couldn't continue. Now I can't play
with it anymore and tell if 502 dropping off was some kind of a fluke or
what the story is. I'm going to ignore it as an anomaly since I can't
So I ripped open the Xport module. That thing is quite the little
marvel, a couple BGAs (an Atmel and a Lantronix DSTni-EX) and assorted
glue crammed in behind an RJ45. Wonder how commonly used they are.
Written on the small metal case was "GM42501 Rev 2.0 (Modbus)" and
"XP1001000-03-GC, Rev. A11" among other things.
1 piece of gear down, 5 more to go :)
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