In fact, the knx2 state update will be totally different to knx1 received command.
- knx1: if switching a rocker, you will receive the command (UP/DOWN/STOP for roller shutter).
When the roller shutter reached the new position, the actuator will send the new state (0 to 100 for roller shutter). - knx1: If sending a command from openHAB, you will get a received command plus immediate state update to 100 (DOWN) respectively 0 (UP). If sending Stop, there is no state update other than the one from the actuator. Of course it’s possible to switch off this autoupdate.
- knx2: if switching a rocker, you won’t receive any command.
When the roller shutter reached the new position, the actuator will send the new state (0 to 100 for roller shutter). So you only will receive a Number. For 0 and 100 it’s easy which command was sent… - knx2: If sending a command from openHAB, as far as I remember, the behavior will be like knx1.
It’s ok for me, as there are only few items for which I need this information.