First off: Thanks a lot!
Yes, exactly. In my config, there is a valid number at this place.
Great - That changed something:
2018-05-21 00:28:40.208 [.ItemChannelLinkAddedEvent] - Link 'L_ArZ_D-knx:device:bridge:generic:L_ArZ_D' has been added.
I suggest this then to be changed in the full example from https://docs.openhab.org/addons/bindings/knx/readme.html
I can see now the item in the sidebar menu under “openhab items”. However, under “openhab things”, there is still only the RPi and the KNX IP Gateway, both with the channels “Online”, “Latency(ms)”, and “Last seen”. No thing or channel “L_ArZ_D” (e.g. to auto-generate an item from).
Of course - I had it this way but tried to restart with a code snippet, but appearently forgot to substitute the type. Unfortunately, it did not work and does not, now. I still get:
2018-05-21 00:28:44.642 [WARN ] [el.core.internal.ModelRepositoryImpl] - Configuration model 'knx.things' is either empty or cannot be parsed correctly!
But now, I do receive a reaction to the switch:
2018-05-21 00:29:48.864 [ome.event.ItemCommandEvent] - Item 'L_ArZ_D' received command ON
2018-05-21 00:29:48.952 [vent.ItemStateChangedEvent] - L_ArZ_D changed from NULL to ON
2018-05-21 00:29:49.368 [ome.event.ItemCommandEvent] - Item 'L_ArZ_D' received command OFF
2018-05-21 00:29:49.385 [vent.ItemStateChangedEvent] - L_ArZ_D changed from ON to OFF
The actual light does not react, though. I will try restarting the RPi, but I’m not too confident, yet.
Another side question: VS Code marked “L_AZ_D” uncolored, but “L_ArZ_D” colored - Is there a minimum length for IDs?