[575] I have two limit switches for X, Y and Z axes connected to only one input terminal. As usual, I also want to use them as home switches. But after the first axis touches its home switch, I get an

Each home switch needs to be on a separate input on the Mach3 USB controller. For instance, the x-home on IN1, Y-home on IN2, and Z-home on IN3. You can still wire the other switches on the same input, for instance, the IN can contain the X-home and X++ limit. The X, Y, and Z homes can still serve as the limit --. Additional Information: So I need 3 of 4 INs only for the home switches??? The remaining one for ++? What about E-Stop and Probe? Additional Information: Please have a look at the wiring diagram you show below. There are all limit switches at IN2 and all home switches at IN3. Makes sense to me.