Hadley Rich wrote, On 11/07/09 11:54:
On Sat, 2009-07-11 at 11:07 +1200, yuri wrote:
Anything more complex than
echo Relay 1 On > /dev/ttyS3
is more than I'm prepared to put time and effort into.
Perhaps Arduino is not what you want then, it does involve some sort of
script/code writing.
Th
2009/7/12 Wayne Rooney wrote:
> On Saturday 11 July 2009 10:17, yuri wrote:
>
>> Yep. I just want to turn relays on and off from a Linux server. The
>> less assembly required the better - my solder joints look terrible.
>
>
> Considered using one of these?
>
> http://www.jaycar.co.nz/productView.as
On Saturday 11 July 2009 10:17, yuri wrote:
> Yep. I just want to turn relays on and off from a Linux server. The
> less assembly required the better - my solder joints look terrible.
Considered using one of these?
http://www.jaycar.co.nz/productView.asp?ID=KV3595
> The server will decide when
l: (03) 348-5875
> mobile: +64211643666
>
> computert...@paradise.net.nz
> http://computertech.dyndns.biz
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> -Original Message-
> From: Andrew Sands [mailto:and...@theatrix.org.nz]
> Sen
On Sat, 11 Jul 2009 21:17:37 +1200
Julian Warwick Bethell wrote:
> I need Help
>
Now tell us what you need help with. :-)
Machine details, Operating System and version, application.
lspci, lsmod and any relavent bits from /var/log/messages
John
On Sat, 11 Jul 2009 21:17:37 +1200
Julian Warwick Bethell wrote:
> I need Help
>
Me too?
John
...@theatrix.org.nz]
Sent: Saturday, July 11, 2009 10:55 AM
To: linux-users@it.canterbury.ac.nz
Subject: Re: Linux and ModBus
On Fri, 10 Jul 2009 21:22:16 you wrote:
> 2009/7/10 Andrew Errington wrote:
> > There are so many levels in the 'stack' from Linux app to actually
http://www.ohmark.co.nz/news090113.html
ie: yes..
The pic software implements a most of the modbus RTU spec, which memory
space for 16 analog I/O and 256 digital I/O depending on the PIC you use
and adding some extra hardware. Relays are trivial...
The end-game for this project will be a full A
2009/7/11 Chris Hellyar wrote:
> Hi...
>
> http://www.ohmark.co.nz/news090120.html
>
> etc...
>
> :-)
>
> Using libmodbus from launchpad (There's two libmodbus's around, one is crap,
> the other is the one I've contributed some bug fixes to. :-) ).
>
> If you're pic-aware You're welcome to have som
Hi...
http://www.ohmark.co.nz/news090120.html
etc...
:-)
Using libmodbus from launchpad (There's two libmodbus's around, one is
crap, the other is the one I've contributed some bug fixes to. :-) ).
If you're pic-aware You're welcome to have some of my test code, I've
not done any work on this
2009/7/11 Hadley Rich wrote:
> On Sat, 2009-07-11 at 11:07 +1200, yuri wrote:
>> Anything more complex than
>> echo Relay 1 On > /dev/ttyS3
>> is more than I'm prepared to put time and effort into.
>
> Perhaps Arduino is not what you want then, it does involve some sort of
> script/code writing.
A
On Sat, 2009-07-11 at 11:07 +1200, yuri wrote:
> Anything more complex than
> echo Relay 1 On > /dev/ttyS3
> is more than I'm prepared to put time and effort into.
Perhaps Arduino is not what you want then, it does involve some sort of
script/code writing.
hads
--
http://nicegear.co.nz
New Zeala
Andrew Errington wrote:
> There are so many levels in the 'stack' from Linux app to actually
> closing a relay. Where do you want to start?
I wrote:
> I'd like to sit down with someone who's done it and pick their brain
> over a few beers. My shout.
Andrew Sands wrote:
>
> When and where for the
2009/7/11 Cheetor wrote:
> Have you considered a jaycar parallel port interface kit, I believe they
> still come in under $100?
The server will be a small profile box that is being given to me. I
don't think it has a parallel port.
> they do require direct hardware access to work, but considering
On Fri, 10 Jul 2009 21:22:16 you wrote:
> 2009/7/10 Andrew Errington wrote:
> > There are so many levels in the 'stack' from Linux app to actually
> > closing a relay. Where do you want to start?
>
> I'd like to sit down with someone who's done it and pick their brain
> over a few beers. My shout.
Yuri wrote:
2009/7/11 Hadley Rich wrote:
I don't really know much about Mosbus, but, if you just want to be able
to control relays and things from a Linux server, and aren't phased by
the protocol, then I would look at the Arduino boards as an easy, open
source way of doing things.
Yep
2009/7/11 Hadley Rich wrote:
> I don't really know much about Mosbus, but, if you just want to be able
> to control relays and things from a Linux server, and aren't phased by
> the protocol, then I would look at the Arduino boards as an easy, open
> source way of doing things.
Yep. I just want to
I have writtern modbus driver for in the past(1990s) a Fisher & Paykel PSC2,
PLC with a serial port.
The protocal is very easy with a 16 bit CRC. It is still used by some
weather station stuff etc.
Snached from automation.com
November 2, 2007 - NORTH HILLS, CA - A white paper, titled "Using MOD
On Fri, 2009-07-10 at 21:20 +1200, yuri wrote:
> I want to be able to turn things on and off from a linux server.
> I am competent with the wiring side of things from the relay to the
> appliance. I know nothing about the control side from the computer to
> the relay board.
I don't really know muc
-Original Message-
From: yuri [mailto:yur...@gmail.com]
Sent: Friday, 10 July 2009 9:22 p.m.
To: linux-users@it.canterbury.ac.nz
Subject: Re: Linux and ModBus
2009/7/10 Andrew Errington wrote:
> There are so many levels in the 'stack' from Linux app to actually closing
>
2009/7/10 Andrew Errington wrote:
> There are so many levels in the 'stack' from Linux app to actually closing
> a relay. Where do you want to start?
I'd like to sit down with someone who's done it and pick their brain
over a few beers. My shout.
Yuri
2009/7/10 Andrew Errington wrote:
> Google gives plenty of hits for "linux modbus", so what exactly do you
> want to know?
I want to be able to turn things on and off from a linux server.
I am competent with the wiring side of things from the relay to the appliance.
I know nothing about the contro
On Fri, July 10, 2009 17:58, yuri wrote:
> Does anyone on this list know anything about controlling ModBus relay
> boards from a linux box?
???
Google gives plenty of hits for "linux modbus", so what exactly do you
want to know?
Do you have a specific ModBus relay board (make and model, please)
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