Modbus binding for openHAB-2

Great that you got it figured out!

The proxy approach might not be needed anymore with the new transformation support out as experimental version

I believe with the new version the dimmer items work straight away as the binding no longer ignores any item types. Since dimmer item type is decimal type, you might get it working without any transformation.

Let me know if you decide to try it out.

Best
Sami