AFAIK this just supports Daikin air conditioners where a Wifi adapter (it’s a separate box afaik) has been connected to. So this binding is actually communicating with the Wifi adapter, not to the air conditioner directly. The wifi adapter has a somewhat standardised syntax to communicate over http, and it then translates what proprietary signals need to be sent to the connected air conditioner via a proprietary wired link.
Currently it is known to support 2, soon to be 3, different kinds of Wifi adapter models: BRP072A42, BRP072C42 and the so called “Airbase adapter” BRP15B61. These adapters support quite a few different kinds/models of Daikin air conditioners, usually the split type or ducted type. Perhaps someone else can add more details about this and whether they also support heaters / heat pumps.
If you can get the documentation of how Altherma R (ex Rotex) heatpump works/communicates and if it looks similar to the other adapters’ protocol, perhaps we can incorporate it / add support for it into this binding.
FYI, this binding communicates with the wifi adapters using HTTP / HTTPS. You can see some of the sample http requests in the posts above.