Re: [CAD_CAM_EDM_DRO] EMC homing

I have a few questions regarding the home switches...

Are these used to provide a precise home location from which you can then locate the
target?

If so, how do you achieve that precision, with optical transceivers? It doesn't seem as though
mechanical switches would switch at the same point each time.

Marshall

----- Original Message -----
From: Jon Elson <jmelson@...>
To: <CAD_CAM_EDM_DRO@onelist.com>
Sent: Tuesday, March 07, 2000 2:23 PM
Subject: Re: [CAD_CAM_EDM_DRO] EMC homing


>
>
> daveland@... wrote:
>
> > From: daveland@...
> >
> > I feel embarased about this one...
> >
> > I cannot get EMC to home an axis to zero?? I select the axis
> > and hit the "home" key...IT just takes off and incriments
> > forever (till I hit abort). Did I forget something?
>
> Do you have a home switch? Is this an encoder-feedback system, or
> stepper open-loop?
>
> Jon
>
>