mirror backplot

I've had this CNC with a closed-loop DC servo for a long time, and it works well for both movement and backplot with the home dot at x0 y0 as seen in the photo. The only problem is that it only works well with the y-axis inverted; the y-axis moves away in a negative direction. I decided to set the axis to positive as the x-axis, but the home dot moves to the left, and I haven't found a way to set them in step... basically, the plot moves outside the work area. Could it be that I changed the order of the pwmgens to match x and spindle on a 7i40hv and y and z on another to use two different voltages for the motors?

hal and ini ?

Here they are, I changed TCL with a modified one but it's not its fault, it does the same with the original one.

MIN_LIMIT = -380
MAX_LIMIT = 0.01
Wrong for Y axis, should be reversed.
Might also need to change direction and/or homing directions, by adding - in front of the scale and HOME_ values.

Tom, I tried everything, inverted the home encoder phases and all the possible settings... if I set the correct axis (reversed) everything is fine but the plot is mirrored and home moved to the left outside the frame.

You are looking at the wrong Z.