Quote Originally Posted by NB70 View Post
Just wire it as shown in the pdf diagram in post#1.
Then set input pins 11 as "Both Limit and home Z", 12 as "Both Limit and home Y" and 13 as "Both Limit and home X" in the parallel port page of the EMC2-stepconf program.

When the EMC2 (its now called linuxcnc) is in homing mode it will move each axis in turn in its specified homing direction until it trips the limit switch and then slowly back off the switch until it opens again. Be careful to set the direction of home search velocity as negative if your home switches are located at the axis minimum, & make sure your emergency stop is working before you test the homing procedure!

Thank you very much. Your explanation really works!