Hmmm This is still now working correctly. I reversed the motor connections to the Y-axis. now when the tool moves away from the from of the machine...away from me, the DRO increases. Ok so that's correct now. which way should the X-axis move then? if it moves right should it increase?
I entered a value in the home off value Y box. as you said equal to the table size.
If i press ref all home, the Z- zeros at the top, the Y-moves back and zeros at the back, the X moves left and zeros there.
If i then press regen tool path. it shows the design off the table, in fact in front of the table on the left.
I played with it in all sorts of ways, but no matter what i do I cannot get the X part of the curser in the tool path window to ever go to the top left of the table view. it always is at the bottom left of the table and then moves off screen when the tool moves towards me...So I have something really goofed up.
I wonder if part of the problem is that my home/limit switches are at the back and to the left. there are no switches in front or to the right.
I am half inclined to just put it back the way it was and deal with it working upside down.