Integrate Maple-CUN and control with Openhab !?

Hello everybody,
I’m absolutely newbie and just trying to get into the topic of OH to control my smarthome devices.

I use a Raspberry with Openhabian and Homegear and have already included some bindings.

Now it’s about getting a Maple-CUN (like that) to get started somehow. The Maple is online via LAN and has no direct connection with the RasPi.

Honestly, I have no idea where to start, what to do, etc.

Please, let there be light.