Re: Heating controller protocol

["Raymond Kelly" <raymondtkelly@xxxxxxxxx>]

Hi Bruce,
The fact that Heatmiser sell a PCLink system
http://www.heatmiser.co.uk/pclink.htm
would surely mean it unlikely they
would divulge the protocol preferring you to buy the PCLink system. But
there's no harm in asking.
You would still have to 'sniff' the command sets to understand the comms -
preferring the Ethernet messages. This is what I intend to do as I have 2
UH1's for my Nu-Heat UFH system.
I am a good few months away from this however, but interested to see you
have made headway using 485


On 03/12/2007, bruce33sw <watson2@xxxxxxx> wrote:
>
>   Hi all,
>
> I've recently installed some very nice Heatmiser kit - 2 room
> thermostats and a UH1 and, with some kindly help from this and other
> groups, managed to cobble together a bit of command line C to control
> them remotely over their 485 bus from a linux box serial port. Nice to
> be able to log in remotely and turn on/off the heating. Early days but
> so far, so good.
>
> The next stage is to get a control interface sorted out and before I
> re-invent the wheel, as usual, I thought I'd ask if anyone knows of an
> open source protocol/server that I could implement the interface to
> for the Heatmisers. What I mean here is I could write some code (say C
> or java) that ran as a service that would control the Heatmisers and
> allow other open third party UI modules (written by others or myself).
>
> I have seen some excellent stuff going on with xpl but it seems to
> have more of a windows focus and therefore may not fit the bill for
me.
>
> Does anyone know of such an open protocol/API?
>
> Cheers, Bruce.
>
> P.S. Has anyone contacted Heatmiser before to see if they would
> support open source tools for their devices (in the hope it
> sells more units for them)? i.e. I'd like to open source the (very
> simple) stuff I've done. I should say my reason for buying their
> controllers and UH1 in the first place was because there was a chance
> I could control them remotely.
>
>
>


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