KNX thermostat

[rages]

Hi,

a simple question that I have not found an answer after years of trying ....
What is the correct parameter in the web admin for the standard thermostat using KNX / EIBD?

I read this on txt on svn:

Code Select Expand

Standard_Thermostat:
channel meaning:
write asked temperature | write mode | return asked temperature | return mode | return real temperature

it's correct?

and if yes

write asked temperature      ----------->  GA  2byte
write mode                        ----------->  GA  1 bit? 1 byte?
return asked temperature     ----------->  GA  2 byte
return mode                       ----------->  GA  1bit? 1 byte?
return real temperature        ----------->  GA   2 byte



Emanuele

[Marie.O]

A GA is always xx/xx/xx afaik

[rages]

Yes, but the mode ga is 1 bit (on heating, off cooling) or 1 byte (comfort, Night, etc)?

[rages]

Perhaps I have not explained very well.
I know in what form should be written in the web admin GA (assuming that I must follow the syntax is shown on the txt file that I found).
My problem is that in the ETS do not know what matches "write mode", corresponds to an object type "heating / cooling" (1 bit), or object "mode" (1 byte), however in both cases, the thermostat does not switch properly between heating / cooling for me.

Emanuele

[avajon]

hi,

for me the Value "C" and "H" works. The GA is for the Konnex thermostat modes.

regards
markus

[rages]

Sorry, what kind of thermostat do you use? I have a merten room controller. The object mode on your thermostat is at 1 bit or 1 byte?

Emanuele

[avajon]

mine are all from Berker (BI.Q for example). I use the 1 byte (DPT 20.102 i think...)

[rages]

ok thanks a lot, and the same for the state of mode? you use 1 byte?

[avajon]

yeah, i used everywhere 1 byte objects for heating/cooling.

[rages]

I don't know why but for me don't work.

The thermostat don't change H/C ...

[avajon]

yeah. for me it was also very hard to find the correct values (H/C). But maybe your GA is wrong? Do you have an android phone? If yes, you could download my App in google play store (KNX Controller) and try if it works there... If you have questions about the App you can write me a mail.

[rages]

Thanks avajon,

I downloaded your android app the last week, really interesting, very compliments.

My room controller is this :http://merten.co.uk/download/DL_doku/P6232_581_03_3_1_GB_Web.pdf

Emanuele

[avajon]

Does it work in the app to control your thermostat? i couldn't find a info in the doc how the merten works... (okay, i looked only for 5 mins. or so...)

[rages]

Honestly, I tried the app with only a few lights on-off.
The thermostat merten works like this:

Object heating / cooling (1 bit) (0 = heating, cooling = 1)
object mode (1 byte) ("4" = Frost / heat protection, "3" = Night economy, "2" = Standby, "1" = Comfort)

you can read this page 39 - 40

[avajon]

try it in the app - if this doesn't work either, you probably have a problem with the configuration of the thermostat. did you also tried it with ets? (send a 1,2,3 or 4 via 1 byte object to the ga?)