Subject: From: Date:

RE: [ecs] need help selecting a PLC module Leland Wed, 23 Jan 2008 23:53:33 -0600

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Mark -

You may also want to consider a Basic Stamp IC made by Parallax. They have
larger Stamps that have more than 16 I/O pins along with separate serial
interface. They program in Basic, a subset of the old Basic we all learned
years ago.

I've got some experience in using them - I built a monitor/alarm system at
work using one of them. They're not the cheapest, I'd have to check - I
think you could accomplish what you're looking for at around $100 or so.
Very stable, program is kept in EEPROM, fun to tinker with.


Leland 


Leland, lhelgerson@surplushunter.net
Remember, if it ain't broke, you're not tryin'!!
The sooner you fall behind, the more time you will have to catch up
A common mistake people made when designing something completely foolproof
was to underestimate the ingenuity of complete fools 
Remember: An amateur built the Ark. The Titanic was built by professionals.

-----Original Message-----
From: Mark Gilmore [mailto:mark3@OmnipotenceSoftware.com] 
Sent: Wednesday, January 23, 2008 7:31 PM
To: ecs@netbloc.com
Subject: Re: [ecs] need help selecting a PLC module

Hi Johannes,
can the IO12 act alone (i.e without the barionet) ?
what is it's retail price ?
btw, the IO12 data sheet notes 12 digital-inputs, but no inputs are
mentioned on your web page.
thanks,
Mark Gilmore
http://OmnipotenceSoftware.com


Johannes G. Rietschel wrote:
> 
> Our Barionet (with an extension module such as X8 or IO12) would deem 
> ideal for that - the product is sold a lot for those
> applications. And it is very easy to program it. I use them in my home 
> of course (for lighting, shades, heating control,
> access control with RFID readers etc), but i am not alone, they are used 
> in quite some commercially available home control systems too.
> 
> Johannes Rietschel
> Barix AG
> 
> 
> 
> Mark Gilmore <mark3@OmnipotenceSoftware.com> wrote on 01/24/2008 
> 01:50:17 AM:
> 
>  > Hi all,
>  > I have a design in mind for a direct-wired/LED lighting system that
>  > uses standard rocker switches.
>  > It will be stand-alone, but will also be compatible with ECS.
>  > I could do it with a PC, but this approach would require a $275
>  > digital-input module (*and* a PC).
>  > So I am hoping to find a low-cost PLC module that is:
>  >    1) easily programmable (either via a custom language, "C", or Basic)
>  >    2) supports:
>  >       >= 16 digital-inputs
>  >       >= 1 RS232 output
>  >    3) made by a stable/reputable company
>  >
>  > The problem is that I have very little experience in this area,
>  > and there are *so* many PLCs out there that it's overwhelming !
>  > So if you can recommend a PLC that you have *personally used*,
>  > please let me know.
>  > Thanks,
>  > --
>  > Mark Gilmore
>  > http://OmnipotenceSoftware.com
>  > 423-745-0026

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