Re: Learning BDI Emc - Outputs

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

Jack

I would think that part of the task of a home offset would be to eliminate 
this condition.  That is the way that you have to do any home configuration 
if you are using the normal steppermod or freqmod parport definitions.  This 
would not be a problem with stg stuff because each home switch is a separate 
pin.

Ray


On Wednesday 09 January 2002 08:38 pm, Jack wrote:
> However, there would be a problem with multi axis machines with this
> technique, since all the home switches electrically ganged together.
> It would be quite likely that there would be more than one axis
> resting on its cam at the start of the homing procedure.
>
> Jack Ensor
>
> Ray wrote:
> > Pete
> >
> > I think that you have hit on an essential addition to the home sequence
> > code here.  Most of the machines that I am acquainted with do it exactly
> > this way.
> >
> > Ray
> >
> > On Wednesday 09 January 2002 04:38 pm, Pete wrote:
> > > Just make a cam that extends from the home position to the end of
> > > travcel in the appropriate direction - if it starts out on the homing
> > > switch the logic should be able to drive off the cam and then go back
> > > onto it.
> > >
> > > Pete