I played with that a little bit last night. It is kind of confusing because the table moves in the opposite direction of the of the onscreen jog controller buttons and arrows on the keyboard (the z makes more sense).
My home switches are set up on the front (near) side of my y axis, and the right side of my x axis (so when reference all home my table moves all the way to the front, and the table all the way to the left). When i switched direction and tried to home my machine- it moved away from my switches. Thoughts? I read a bunch a posts about home offset under config, but I couldn't seem to get that to work either. Thank you.