You can monitor basic functionality of KNX components with the components you find on this site. Unfortunately, they don’t offer a script for reading KNX group addresses.

According to, I modified the script a bit to be able to get KNX GA values: You can e.g. use it for checking GAs periodically for errors, e.g. some KNX devices offer GAs like “device failure”, “no signal” etc. It basically does the following:

  • It runs the groupreadresponse command of the bcusdk package, which is also needed for the other KNX plugins.
  • If the GA returns 0/false, the plugin returns OK -> no error. Otherwise you receive an alarm in Nagios.

You can download the Perl plugin here: check_knx_groupaddress


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