Re: know your limits

["Darrell" <dgehlsen-at-earthlink.net>]

Bill,
By the same logic, you will not get a closure unless all three are closed.
For HOME switches, connect in parallel. The main need then is after homing an
axis, you must then, either in software or manually, move that axis off the
switch before Homing the next axis.
If the switches are in series, the two axes that have the shortest distance to
travel will go past their switches and crash before the last axis trips the last
switch.
Darrell

----- Original Message -----
From: <WAnliker-at-aol.com>
To: "Multiple recipients of list" <emc-at-nist.gov>
Sent: Wednesday, March 14, 2001 10:37 AM
Subject: know your limits


>
>
> <<
>  Also, in re reading your original post, I see you have the switches in
>  series?
>  Change to parallel as all switches must be closed in order for series to
>  work.
>  In the ascii art below || represents a switch
>
>
>
>                     |----------||----------|
>  Pin 12 ---------|----------||----------|-------to parallel port ground
>                     |----------||----------|
>   >>
> My electronics training indicates that you will get an open circuit only when
> all three switches are open, you will not be able to detect the opening of
> any single switch if they are in parallel.
> bill
>