Merten switches working with raspberry pi Z-wave

[eastpark]

I have a Merten installation, after a power failure I lost everything in the Radio Central Unit (700Euro).
I'm unable to get connected with the Merten/Schneider radio usb device.
As a test I bought a rasberry Pi with Z-wave module (70Euro), and I'm able to connect (push button on device) and control Merten switches like MTN507601.
Now I wanted to get connected to my wall mounted Merten switches and touch panels (502460 & 576799).
Here I fail completely to get and signal into my Rasberry, resetting (triple push + 5 seconds push) etc.

Also Hardy describes the same problem, but no solution