Hello to the round, hello Martin
Here’s an update on the situation…
I now have Openhab2 new on an extra Raspberry. Again the same error, HM-MOD-EM-8 can not be integrated as an item. At least not via WebUi. But I managed to capture the HM-MOD-EM-8 manually in text form. This works as well, but it inverts the switching function of the function window contact. But I need this for my garage. Now I have the problem that I see the state closed in Homematic APP when the garage is closed, but the state open in Openhab.
So I bought a HMiP-MOD-RC8…the same device only as an IP variant, in the hope that Openhab will recognize this better. Far from it, here Openhab doesn’t even recognize the window contact function anymore. It only outputs the function LONGPRESS in Openhab. Even the BUTTON function is greyed out. CONTACT is not even present. Catastrophe…(freely after Manusakis) 
I think I’m now looking for an interim solution and wait and hope for an update which will fix the problem with these really great stations. Because there are certainly a lot of possible applications.
I will use two channels in parallel with my microswitches on the 8 channel HM-MOD-EM8. Then channel 1 sends the value “closed” to Homematic and channel 2, inverted, “closed” to Openhab. I can change the output value in Openhab or in Homematic. Just not separately for the systems.
Thanks a lot and especially to you Martin!
If that’s ok, I will not close the thread as solved, because it is not!
If anyone else has an idea, feel free to bring it to me!
See you soon and true to my motto, we are a bit closer to Mars again…
Greeting
Hardy
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