Re: EMC Homing Switches

[Ray <rehenry-at-up.net>]

On Sat, 22 Jul 2000, Ian wrote:
> I can see the problem - if at the end of a program you tell the machine to
> return to 0,0,0 (or whatever you call home) then all three axes 'should' get
> there at the same time! If you parallel three switches then the first to
> reach home would trip and the whole lot would stop leaving two axes at a
> 'random' position. If, on the other hand, you put the three switches in
> series, only the last axis to reach 'home' would stop things and the other
> two would by then have overshot. I find it hard to believe that there is not
> a clever solution to this but I can't visualise one with only one switch
> input.

I think, fwiw, that the only time the EMC really looks at home switches
is when it is in manual and a home operation has been requested by the
operator.

Going home (g53 x0 y0 z0) should cause no problem for the system even with
three switches open or closed and all connected to pin 12.

Ray