@dc42 Thank you.. I check later

@hussainsail2002 Yes i do know this and i used both of ports at start. But after i started using setup as XY then this started... So the one port B is disabled..

@dc42
Im having problems to understand this. As right now im using only one port on the board for dual z drivers. But do i yet Have to use M854 in config file? As for endstop i use a switch and no probing. But the bed not seem to want to use as after homing as 0 -min. Each time i start new print i have to home all and then start new print.. and use baby steps to get the correct height.