Re: Help implementing spindle & coolent on/off

Ray,

Thanks for the clarification. I was under the impression
that axis 5 and 6 could not be disabled and would fight
the I/O trying to use the same output pins.

Cheers,
Steve Stallings
www.pmdx.com

--- In CAD_CAM_EDM_DRO@y..., Ray Henry <rehenry@u...> wrote:
>
> Steve
>
> Actually Matt Shaver demonstrated that you could run steppers and
> bridgeportio using the same parport while we were at NAMES this
year. What
> he did was spec 0x378 for steppers and 0x37A for bridgeportio.
This
> references the highest numbered four output pins with both the
stepper driver
> module and the I/O software. Those high pins are ignored by the
stepper
> driver if you do not have axis 5 or 6 defined
>
> The way I run it is by setting up the ini file with bridgeport task
and ini
> and set estop write index to pin 0, spindle fwd to pin 1, spindle
rev to pin
> 2, mist and flood coolant to pin 3. This puts those functions on
bits 8
> through 11 on the parport and those signals run the relays on your
PMDX-120
> board. Using the EMC this way, you can assign most any function
that you
> want to those four relays. It isn't exactly a plug-n-cut solution
but it
> works well.
>
> You have to be careful how you assign the other I/O signals and
what polarity
> you give them or you will get machine states that you don't really
want. <g>
> Perhaps this is what you meant when you said, "nice clean single
parallel
> port setup."
>
> Ray
>
>
> >    From: "stephen_stallings" <stevesng@n...>
> > Subject: Re: Help implementing spindle & coolent on/off
> >
> > The PMDX-120 would be ideal for the application IF he does
> > use Master5 for software.
> >
> > Caution is advised for those who wish to use EMC to run
> > steppers. The current structure of the EMC software will
> > not allow the misc. non-realtime I/O to be on the same
> > parallel port as the stepper drivers. This is expected
> > to be rectified, but at present it will prevent a nice
> > clean single parallel port setup using the PMDX-120 and
> > the current EMC software to run stepper motors or step
> > servos.
> >
> > Regards,
> > Steve Stallings
> > www.pmdx.com
> >