Re: [CAD_CAM_EDM_DRO] Home / Limit switches

Carlos Guillermo wrote:

> List –
>
> The current discussion on g-code and coordinate systems has me
> wondering about what switches are really needed on the machine
> axes. The typical setup sounds like 2 limit switches and a home
> switch per axis. Why is the home switch necessary? Can’t you
> just reference one of the limit switches and add ½ travel to get
> to the center? That shouldn’t even be needed if you’re going to
> just go and set your part origin somewhere else (so it seems).

The problem is many systems are wired so that contact with a limit
switch puts the machine in E-stop, and you have to manually back
off the switch to get out of estop. Actually, a home switch is probably
more important than the limit sw.

> Does anybody out there omit the home switch?

I don't have ANY switches on mine. I really want to take the time to
put the home switch on, at least, so I don't have to reset the
coordinate reference point every time I start the system up.
Just a matter of time!

Jon