View single post by Glouba
 Posted: Wednesday May 4th, 2011 05:21 pm
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Glouba

 

Joined: Tuesday Apr 19th, 2011
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Hello again,

I just ran some test with ETS and it seems that writing 1bit to the group address for zone 1 bypass is working fine. I tested this by writing 0 or 1 and checking with the comfort keypad that the zone bypass was correctly switched off or on.

But I still don't understand the feedback I get from the UCM/KNX (I wrote the EEPROM again just to be sure) : When writing a 0, I get a response for zone 1 with 0, but I don't get that response when writing a 1 (even if set to on with the comfort keypad).

The messages sent to the bus when setting bypass OFF (through KNX or keypad) are :

from bus         L    1.1.1        10/1/17    Zone Trouble    6    6 Bit    Write    $00   
from bus         L    1.1.1        10/0/1    Zone (1)    6    6 Bit    Write    $00   

Which looks fine, I can tell that zone 1 is bypassed.

BUT if setting the bypass ON (through KNX or Keypad), I only get these on the bus :

from bus         L    1.1.1        10/1/10    Alarm Type    6    1 Byte    Write    $10 | 6 %   
from bus         L    1.1.1        10/1/3    Alarm State    6    6 Bit    Write    $00   
from bus         L    1.1.1        10/1/20    Alarm State (Value)    6    1 Byte    Write    $01 | 0 %   

I would expect to receive a "Zone 1" (10/0/1) with a value of 1 or something. How could I deduct from these 3 messages that zone 1 has been bypassed ?

Also note that I'm using address 11/0/1 to set the bypass status, and that the response (in case of bypass OFF) is coming from 10/0/1, which correspond to the "Comfort to KNX" zone status. But that seems logical.

Do you have any clue ? Are the received messages the normal behavior ?
Again, any hint would be appreciated :)

Thanks again.

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