One limit switch per axis

[Ulsterman]

Usual CNC setup with homing required machines
Move to Zero
Plus soft limit--- where the servo is stopped or held mode is plus 5mm and comes from the axis control
Hard limit activated by a switch linked to the Estop circuit is plus 10mm
The same goes for the Minus side
Wither its two switches or two position dogs really doesn't matter but they are there to protect the machine and zones
For recovery from these usually needs an over travel release button on the operators panel and sometimes keyed so proper- questions are ask to why its there in the first place