NI Motor different Zero Position every time

Hi,

I am using AKM11B-ANCNC-00 motor with AKD motor drive, NI UMI and motion control card. Every time when I power up and give command of zero absolute position from NI MAX software, the motor achieve different position. When I look for the value in NI Max "1-D interactive" the captured position is also showing zero. Kindly guide me in this regard.

Regards,