@lh4pi

Maybe the problem is the USB handshaking . If it was possible to set the DTR to low (and RTS to high ,) works for me using Pronterface and Repetier-host. But in Mattercontrol I have not find any way to control this settings for DTR and RTS and i belive that is the problem why the USB communication do not work in this program since they are set in a way that the MP delta miniv2 do not accept even if Mattercontrol find the correct port .