I am using Mach3, Smoothstepper (USB). I have home switches installed Normally Closed (gnd). Active High. (See attachments)

When I activate the switch (manually), Mach 3 see the home switch. But when I do a home operation, it ignores the home switch.

Help appreciated.

What exactly is it doing? The green box around the X label would indicate that it's homed.

That came after doing escapes to stop it from crashing.

When I tell it to home ( x in this case) it starts moving in the appropriate direction. I would manually hit the home switch but it would continue to travel. It should stop and retrace till I let go of the switch.

When using the esc key, it reacts correctly.

The switch is working and mach3 diagnostics see it. It just does not halt/reverse the movement.

You may have noticed Gerry, that I am using the 2010  screens (love it). I did test with straight mach3 screens as we'll and the behavior is e same.

So, if you activate the switch, the LED lights up in the diagnostic screen, but not while it's homing?
Sorry, but I don't have an answer for you.