KNX Things and Items Configuration

Setup, Configuration and Use Installation
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1

Hi All,
i am running Openhab 4 on on a raspberryPi and everything is fine.
KNX Binding is running succesfully since Openhab 2 and everything is fine. Nevertheless I am thinking about rebuilding from scratch and have a question on the Thing configuration of the KNX devices.
As far as I understood Openhab is not using the physical adresses, but uses simply the group adresses.
An example by @Udo_Hartmann was this one:

  Thing device rollladen1 "Rollladen REG 1.1.2" [ // a multi channel shutter actuator
    address="1.1.2"
  ] {
    Channels:
    Type rollershutter : ch1 "Kind 1" [ upDown="1/4/0", stopMove="1/4/1", position="1/4/2+<1/4/3" ]
  }

Would it also work if I remove the physical adress?
It would then look like this:

  Thing device rollladen1 "Rollladen REG 1.1.2" [ // a multi channel shutter actuator
  ] {
    Channels:
    Type rollershutter : ch1 "Kind 1" [ upDown="1/4/0", stopMove="1/4/1", position="1/4/2+<1/4/3" ]
  }

I am keen on removing as many physical adresses as possible to create more portable configuration files.

2

Yes, the physical address is not really required.
It may however be the basis for figuring out if a device is online or offline.

In theory you could even model all your channels into a single device (makes no sense)…

3

Hi @Oggerschummer, thanks for the reply,
I have indeed one actor (it is an MDT that is coupled using Ethernet Tunnelung) which is always offline, nevertheless all Channels are working and are being used regularly.

I have a usecase where I would like to ignore the physical devices and just switch to the logical views using dummy devices or use one “trojan horse” as device and link all channels to it.

It has something to do with the way how I want to automatically build my openhab environment based on my ETS6 output. A bit strange but I would like to avoid spending too much time to try out in case anyone has experience with this,

4

Like the docs say most likely if a device is down the whole line is down. On a very basic installation maybe there is a limited use but on most modern installation is a loss of traffic with no added benefits and even not reachable information think of filters. Just like openhab has it’s items knx has it’s group adresses …