Mach3 ports and pin setup to match my control box

[EddyCurrent]

In Mach3 'Config' / 'Ports and Pins' / 'Input Signals', make sure you have the correct 'Port #' and 'Pin Number' for the 'Home' inputs, also make sure the 'Enabled' boxes are ticked. The port should be 1 but the pin number will depend how the inputs are wired into the breakout board.
You can go to the 'Diagnostics' page and watch the inputs change when you activate the switches with a metal object. If they work the wrong way round then check the boxes called 'Active Low' and this will reverse them.