Hi Frank,

Thanks for your response.
But I am pretty sure this is not the problem. Because I started at the normal adress 1. When this address didn't respond, I tried the other adresses as wel. So from 1 to 4. As well in the profilux as in the profilux control of course.

Not one of the addresses responded.

Now the Profilux is back to address 1. without any result, unfortunately

Other suggestions?