Re: Does anyone have details of the Heatmiser protocol?

["howardsixtynine" <howardsixtynine@xxxxxxxxxxx>]

That was quick!
Thanks iaingoodhew for uploading it. I'll buy one and have a play. It's=20
a bit worrying that they've got a new version with extra commands, so=20
this protocol may not apply. Has anyone tried it?


--- In ukha_d@xxxxxxx, "howardsixtynine"
<howardsixtynine@...>=20
wrote:
>
> Hi
> I just discovered this group while Googling for data on the
Heatmiser=20
> thermostats, and I get the impression that some people have a=20
document=20
> detailing the communications protocol for these.
> I'm searching for a heating control system that will take care of=20
> itself - ie. not PC controlled, but that I can log into remotely
and=20
> change settings. The Heatmiser PRT/HW-N looks ideal since it does=20
> everything and has a RS485 connection, and it's under =A350. I just=20
need=20
> to find out the protocol they use. I gather that there's no point
in=20
> asking Heatmiser as they won't give it out, but I've read posts
that=20
> say someone has reverse engineered the protocol and produced a=20
document.
> Can anyone help me obtain this?
>