home problem with mach 3

Hello
Iam new to mach3 and are a bit confused , When I try to zero my machine it just crashes into my home and limit switchs . all of my home and limit switchs work but it wont stop whne it hits them . Any ideas ?

Thanks

Why do you say they work? Do they work on the diagnostics screen?

I have the same problem on a laser cutter. X and Y limit switches both work and show up in the diag screen correctly. I have home configured to use the same limit switches. When I home it, the axis just goes to the mech stops like it dose not recognized the limit/home switch.