OpenTherm protocol PDF document

by **Ard M** » Tue Jan 06, 2009 5:18 pm

[:D] Here they are the Open-therm protocol commands, good luck with it.

domoticaforum.eu/uploaded/Ard%20M/Opent ... 20v2-2.pdf

by **Bwired** » Tue Jan 06, 2009 5:30 pm

Hi Ard,
And the luck we need :-)

thanks for the topic, but these commands won't help very much.
You need the complete protocol to make it work!

by **MindBender** » Tue Jan 06, 2009 6:19 pm

That would be GREAT to have!

by **Snelvuur** » Tue Jan 06, 2009 6:33 pm

If you send it to pieter, he can put it on the files section. Or me for that matter..

// Erik (binkey.nl)

by **Andro** » Tue Jan 06, 2009 7:19 pm

Yes.. would be nice to have a RFXcom receiver/transmitter that could decode this protocol and put it into homeseer. If I look at my thermostat what is possible than I has a lot of possibilities. I'll just keep on dreaming ;-)

by **Bwired** » Tue Jan 06, 2009 7:57 pm

Hi Ard,
I updated your first topic and added the Opentherm protocol version 2.2 PDF document.
Thanks for the specifications, this will help a lot with opening up opentherm!

@erik: can you put it in the filesection?

by **Snelvuur** » Tue Jan 06, 2009 8:24 pm

http://files.binkey.nl/Manuals/Opentherm/ its now there too.

// Erik (binkey.nl)

by **MindBender** » Wed Jan 07, 2009 9:47 am

Or you can use a Remeha GateWay; I'm still curious to know if it works with 3rd party OpenTherm boilers and thermostats too.

by **Andro** » Wed Jan 07, 2009 10:34 am

@MindBender: I read up on that Remeha gateway. It looks very interesting and I would be willing to use it. But from what I understand it only works with a Remeha thermostat and uses it own software. I was hoping (hint hint hint) that maybe RFXcom or another company would make such a gate themselves for reading/writing on that protocol. I think it would be great to have this integrated in homeseer. Also I would be willing to use more devices on that protocol (like a air conditioning) if it would all work. I also think it would really sell btw, because in these times most of us want to control their heating in a more advanced way.

Since I can't program and have no technical skills whatsoever I will have to revert to the 'teleprogram' option of my chronoterm. Doesn't mean I can't dream about nice things in the future.

Ronald

by **wwolkers** » Wed Jan 07, 2009 11:53 am

Elektuur had an article about opentherm a while ago.

from their site:

http://www.elektor.nl/artikelen-als-pdf ... 8315.lynkx

Opentherm-monitor

Published in Elektor number 453, juli 2001

I still have it somewhere... built it, only to find out that opentherm != opentherm

by **Bwired** » Wed Jan 07, 2009 1:05 pm

Perhaps with the above opentherm protocol you can get it to work!
I have the circuitboard as well but was not able to get it work with the closedtherm protocol :-)

this is the schematic
domoticaforum.eu/uploaded/bwired/Open-T ... ostaat.pdf

by **Lempens** » Wed Jan 07, 2009 3:25 pm

I have also the circuit board. But I stopped at decoding the Manchester protocol. I only receive 001100011000000011001000 and so many pages full.

I had also contacted Elektor, but the person who has designed it left, and nobody else knew something about it. And the don't have any software sample anymore.

by **Snelvuur** » Wed Jan 07, 2009 3:49 pm

I found some other documents too though, i've placed them at http://files.binkey.nl/Manuals/Opentherm/ , see if it has any value.

// Erik (binkey.nl)

by **RDNZL** » Wed Jan 07, 2009 8:49 pm

I had found a document once from the designers of the Buderus (Nefit) micro controller, but can't find it anymore [}:)]

Still searching though...

Wait... what's this?
http://www.necoso.com/logbox.htm

by **RDNZL** » Wed Jan 07, 2009 9:04 pm

Any volunteer willing to infiltrate for a month?

http://www.nefit.nl/overnefit/werkenbijnefit/vacatures/Pages/EmbeddedSoftwareSpecialist.aspx

LOL [8D]

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