OH3 KNX channels not being updated

  • Platform information:

    • Hardware: Raspi 4b - latest image
    • OS: Raspian OH3 image
    • Java Runtime Environment: which java platform is used and what version
    • openHAB version: OH3
  • Issue of the topic:
    I’m setting up a new OH system using OH3 UI and I’m quite successful. All already configured KNX Things are online and most channels work as expected. Only channels which signal status information (I use a contact type) result in NULL. Another real contact (for windows) works as expected.

A KNX bus monitor shows me the live updates of these items but there is nothing in the OH3 log files and no update of the related item.

I tried several things without any success and have no clue how to proceed.

Here some screenshots of my setup:
KNX Things

KNX Items

Failing Item
It is a status information of a presence detector

Code sequence
Bildschirmfoto 2021-04-07 um 19.56.20

Hope someone can help me to solve this problem.


Seems for Contacts it is not allowed to use the DPT (e.g. 1.005) in the GA configuration.

  ga: 2/0/60

works at initial definition.