Re: Re: Help implementing spindle & coolent on/off

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@...>
> 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
>
> --- In CAD_CAM_EDM_DRO@y..., Ray Henry <rehenry@u...> wrote:
> > 
> > I've used the PMDX-120 on my Grizz mill since Steve introduced
>
> them.  I
>
> > really like it!  Does everything I need and then some.  Nice layout
>
> and easy
>
> > to use once you figure out that stack of dip switches.
> > 
> > Ray