Absolute Zero Reading

[Punk4520]

Fanuc oi-M Control
When setting my G54 coordinates, I type in the machine position in the the specified axis. Absolute positions change to 0.000 like they should and I want. However the A axis doesn't go to 0.000. It does change but not to zero. How can I get it to read 0.000 in absolute on the A axis?
Thanks.

[Punk4520]

Pic attached

[machinehop5]

...G92 A0 ?

[Punk4520]

Yep. Thank you!

[Punk4520]

Well that worked to get the absolute to read 0.000.
This morning when I did a reference return X,Y,Z axis all read 0.000 on machine coordinates as the should. But the A axis doesn't read 0.000?????