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Limited access to the KNX Bus

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Erik
2009-05-13
2012-12-14
  • Erik

    Erik - 2009-05-13

    Hi all,

    I have a Linksys WRT54G device, which is running OpenWRT Kamikaze 7.09 and Linknx 0.0.1.26. Connection to the KNX is made through a FT12 Buskoppler on the serial port.

    Everything was working fine until a couple of days ago.

    Now Linknx is reading from the bus, but is not sending to the bus. The following example shows this:
    An external device sends a telegram 8/0/1 with 'off'. A Linknx rule is configured to respond by sending an off on 8/1/1 and 8/2/2. Below is the respective excerpt from the Linknx's logfile. The telegrams associated with the last two lines never show up on the KNX bus (devices are not responding and ETS busmonitor is not showing those).

    Write from 1.1.19 to 8/0/1: 00
    2009-05-13 17:19:24 [ INFO] SwitchingObject: New value 0 for switching object irrigation_target_bed_north_northern_line
    2009-05-13 17:19:24 [ INFO] SwitchingObject: SwitchingObject (id=irrigation_target_bed_north_northern_line): Compare value_m='0' to value='1'
    2009-05-13 17:19:24 [ INFO] Condition: ObjectCondition (id='irrigation_target_bed_north_northern_line') evaluated as '0'
    2009-05-13 17:19:24 [ INFO] Action: Execute SetValueAction with value off
    2009-05-13 17:19:24 [ INFO] KnxConnection: write(gad=16641, buf, len=2):
    Send request
    2009-05-13 17:19:24 [ INFO] Action: Execute SetValueAction with value off
    2009-05-13 17:19:24 [ INFO] KnxConnection: write(gad=16898, buf, len=2):
    Send request
    Write from 0.0.0 to 8/1/1: 00
    Write from 0.0.0 to 8/2/2: 00

    Thank you very much for your help in advance!

    Erik

     
    • jef2000

      jef2000 - 2009-05-13

      Hi,

      For this kind of issue, it would be helpful to start eibd with traces enabled (with -t65535 and without -d option) to see what's going on there. Which version of EIBD are you using? Are you able to switch the outputs on and off using groupswrite (or knxswrite) to send telegrams to the bus?

      Regards,

      Jean-François

       
    • Erik

      Erik - 2009-06-19

      Hi all,

      thank you Jean-François  for your reply.

      This is one of the very few occassions, where a problem solved itself. I was working on it for a reasonable amount of time, until I realized, that the system is working already without intervention.

      Regards,

      Erik

       

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