On every lauch of openHAB all KNX binding commands will be activated once, so all my lights will be switch on or off, dependent on current status. After the launch, everything works fine.
I work with…
although waterkotte binding is listed in the wiki, the binding does not exist in the addons.zip (1.6.0-767), see http://knx-user-forum.de/openhab/38714-waterkotte-eco-touch-openhab-addon.html