THanks for the Answer. Thats it the Standbymode i got already.
My Fse is 2006. I tested mostlikely the IAWReader but this doesnt worked anyway. i had Ignition of for min 10 s as writen in the programm. then turned ignition on (Fuelpump didnt start-->thats right) but then it didnt connect. I did this over and over again. Same in Guzzidiag but had there less tries.
The COM PORT I've choosen is the right one tested different drivers for the cable aswell.