My limit switches arent mechanical switches, it's a hardinge CHNC lathe so they used fancy hall effect switches. Wiring the estop string through them would require some significant changes to the overall machine wiring.
My other concern about Mach ignoring the limits is, what happens when you tell the machine to home and you're on the wrong side of the home switch...the axis will drive to the mechanical stop since Mach won't trip the limit. On this lathe, it's easy to be on the wrong side of the home switch, trust me, I hit the limit switch many times when attempting to home when it had its original control on it.
Is there a way to overcome (through software) Mach's ignoring of the limits?