Re: [CAD_CAM_EDM_DRO] Re: Controllers

Roy,

Yes, with Mach2 will support four axis on one parallel port. The four
outputs are selected by using M codes. Trying to multiplex them may be a
little tricky.

Remember, the forth output port is currently used with the charge pump
function if the charge pump function is selected. A solid-state relay can be
connected to the same port and will be active anytime the charge pump is
active.

Bob Campbell
Bob@...
www.campbelldesigns.com
Breakout board
THC board sets
CNC router plans
Stepper Motors

----- Original Message -----
From: "Roy J. Tellason" <rtellason@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, March 18, 2004 10:31 PM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Controllers


> On Thursday 18 March 2004 02:12 pm, Robert Campbell wrote:
> > Mike,
> >
> > To star with, go to the www.geckodrive.com web page and download their
> > white paper. It is a good starting point.
> >
> > Then go to my web page www.campbelldesigns.com and download the
information
> > on my breakout board.
> >
> > The answer is that you will need a control box with a power supply and
some
> > way to breakout the wires from the parallel port. In Mach2 you will
assign
> > which pins are used for various functions like step and direction
signals
> > that go to the Gecko drives.
> >
> > It is fairly simple once you see the big picture. Mach2 on one parallel
> > port can support four gecko drives. They are not daisy chain together,
but
> > receive their step and direction signals from different pins on the
> > parallel port.
>
> I am guessing here that one parallel port plus breakout board will support
> four drives with step/dir for each because they're using a separate pin
for
> each of those step/dir signals, out of eight pins available, is that
about
> right?
>
> I was thinking as to how it might be feasible to stick a decoder chip on
the
> breakout board and then have it select maybe one of eight outboard
functions,
> though I guess software support for this would be the real issue, eh?
>
>
>
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