The problem is, that when hitting limit trigger, Mach3 stops immediately drive clock. This has some major disadvantages:
1. At some machines, the limit switches which are reported to Mach are not the last security instance because that one is realized in hardware. So when limit trigger is reported to Mach, it would be convenient to slow down with a steep ramp instead of killing drive clock for a more gentle treat of the mechanic components.
2. At some machines with servo drives, namely those where the servo controllers have no separate input for emergency-stop, slowing down with a ramp leads to faster stop than just clock interrupt.
3. Same is at some machines with stepper drivers, where instant interrupt of drive clock leads to lost steps, resulting in a slower slowdown than possible.
At all these cases, slowing down the drives with an adjustable ramp would be beneficial either for security reasons or for a considerable treatment of hardware.
Many greetings
Nicolas