Thor, or should that be Zeus?

[Clive S]

Ok, fundamental question.

Is it normal or acceptable to use the same switch (mechanical or proxy) for both home and limit? I dont understand how the machine would know if it was simply sent home or it actually needs to stop as its a limit. Is there logic that says 'ref all' and it goes home but if its hits the home limit during any other movement (manual or programmed) that the machine will then stop?

Chaz I think you are getting bogged down with all this. When you home the machine the software knows that you are homing and therefore treats the switches as (homes) when the machine has homed the software then treats the switches as limits.

In your case you will have plenty on inputs so why not keep them separate. (it is also OK to use just one switch for home and one end limit)