Re: Probing question

["Joel Jacobs" <jj-at-spyparts.com>]

Hi Ray,
I found will's post in the way back machine and added the probe definitions
to my ini file.  After messing around with it most of the afternoon I found
I have my probe jack wired backwards - the input to the port is connected to
the ground pin on the 1/8" phono plug. DUH!  I'll fix it tomorrow and I bet
it will work then...

Joel

----- Original Message -----
From: Ray <rehenry-at-up.net>
To: Multiple recipients of list <emc-at-nist.gov>
Sent: Sunday, March 25, 2001 9:53 PM
Subject: Re: Probing question


>
>
> Joel
>
> If you are still using the Jan, 2001 release or a newer version the probe
> routines should be included.
>
> I'm just sure that Will wrote a response to this question some time ago.
> The two lines in the ini file that are relevant are in
>
> ; Trajectory planner
section --------------------------------------------------
> [TRAJ]
>
> PROBE_INDEX =           0
> PROBE_POLARITY =        1
>
> If I remember right, the zero index is the s0 in.  You should be able to
> find the correct pin if you watch your parport with IO_Show.tcl in the
> scripts menu while you tickle the pins with a small resistor.  I use a
> couple hundred ohms just to make sure that they all work properly.
>
> Then pull up Will's probe routine and fill in a move and start it.  If it
> stops instantly, the polarity is reversed for your setup.  If the move
> goes, short the pins until you find the correct one and it should show a
> probe flag and stop axis motion.
>
> HTH
>
> Ray
>
>
>
>
> On Sun, 25 Mar 2001, Joel wrote:
> > Hello people,
> > Where can I find info on how to tell EMC what IO pin to look for the
probe
> > on?  I'm using minimill and I have wired my probe jack to pin 10 on the
> > parallel port - it's an input that didn't seem to be used so thats why I
> > picked it.  I've looked through the handbook and NIST sites and also my
ini
> > file but haven't found much info yet.
> >
> > Thanks...
> > Joel
> > '
>