Hi all, I just got a chinese engraving machine 6040, with USB controller. It came mounted with 3 home switches, however when I click on "ref all home" in mach3, the axis jogs in the direction of the z switch but it really doesn't do nothing and continues jogging to the machine limit. I would expect the axis to back off from the limit and stop there.
I attach some pictures of my configuration panels and board setup. The switches are attached in parallel. Any idea?