this is today the second event of Mach3 driving BEYOND one of the soft limits. Crash, minor damage. Thank you hardware limits, mounted and wired separately from the homing devices, etc. Driving axis off of limit, cleaning up the mess, and jogging to the home of this particular axis shows a shift of dY = 180 mm, in MACHINE COORDINATES and a minor
dX of 23 mm.
Now, if for some reason, the machine coordinate value of one axis shifts by a certain amount, the soft limit will trigger before or after, depending on the sign of the shift.
Which mechanism can produce such a shift ?
Am I the only fellow with this issue ?
Two events of that sort in one week after more than a year of smooth operation is a good statistics ... waiting for a shift in Z !!
Comments are welcome.
Philippe