My Z ha limits: min = 6, max = 57
The direction is correct, became negative going down.
But the zero is down not up..
I think it should not be a problem right?
I recreated the gui but with old RPI I was using in this way for long time..
If it works for you, it is OK.
Almost always on mills the Z 0 is at the top and goes down in negative direction, that is how most CAM software will output G code.
