Re: [CAD_CAM_EDM_DRO] Re: Question:Parallel interface with Gecko 201 drivers

Dear Kayla,
For single ended signals such as you are talking about the twisted pair
is one signal line (step or direction) and one ground line, therefore it
doesn't matter how many signals there are, they always come out even. Do NOT
twist two signals together. P.S. last post is right, it makes very little
difference in the cable if the interface is done right and the cable is less
than 10 meters. I hope this helps, Mike C.

----- Original Message -----
From: "Kayla Sanders" <tattoos4unme@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, October 11, 2002 9:51 PM
Subject: [CAD_CAM_EDM_DRO] Re: Question:Parallel interface with Gecko 201
drivers


> I hope that I dont have aproblem with RFI. But in the case that I
> do, I just want to be prepared.I see nothing wrong with that.
> Im here to LEARN, as most people are. And I still have unanswered
> questions that Im hoping that someone will help me with.
> Is anyone willing to answer these questions the best that they can??
> Preferrably without the sarcasm.
>
> Thanks
>
>
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., "Tim Goldstein" <timg@k...> wrote:
> > Glad you have not gotten around my machines to tell them how their
> wires
> > must me. The parallel cables I have used and the ones I have cut
> apart
> > (cheapest I can find in both cases) are not twisted pair at all.
> >
> > You are taking some best practices guidelines and solid solutions
> IF you
> > have noise problems and trying to make it the requirements for
> wiring.
> > In most cases it just ain't that critical.
> >
> > Tim
> > [Denver, CO]
> >
> >
> > > -----Original Message-----
> > > While using a breakout board is probably the best way to go, i
> find
> > > myself wanting to make my own cable for the pure satisfaction of
> it
> > > and the learning experience..
> > > Heres what i know about cabling from parallel port.....
> > > The wires must be in twisted pairs.
> > > The step/dir wires must not be in the same twisted pair.
> > > The length should be no more than 12 feet in length.
> > > Any power derived from the controller source must be seperate
> from
> > > the step/ dir wires. Prefferably as far away as possible.
> > > The wires must be of a shielded kind.
> > >
> > > My question is this....
> > > If the step/dir wires can not be put in the same twisted pair,
> then
> > > what should a twisted pair consist of?
> > > Two step in a pair or two dir in a pair? Or what?
> > > If you were to make your own cable(eveen though you probably
> would
> > > opt not top do so) How would arrange the wires??
> > >
> > > Thanks again
>
>
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