RE: [CAD_CAM_EDM_DRO] Re: General Question REgarding Stepper vs. Servos

> -----Original Message-----
> Daniel,
>
> Let me preface this by saying I'm not an expert and basically going
> off of what I'm learning here.
>
> I believe I want closed loop. Stepper or servo not an issue I don't
> think as far as accomplishing the cut. I want closed loop since I
> want to run off of DOS emulators and not true DOS of the higher O/S,
> therefore I am less worried about any missed steps creating a
> possible tolerance stack in a long routine.
>
> Charles

Closed loop on a stepper is mostly a marketing ploy in my mind. AS far
as running DOS programs on any of the NT based operating systems
(Windows NT, 2000, XP), you can't. It is not just a timing issue, but
the fact that these systems will not allow direct hardware access by the
programs. So, they error and fail when they try to write to the parallel
port. If you want to use any of these operating systems to drive a
machine you have to use a controller program that is designed to work in
them. Your choices are Mach1 or 2, Flashcut, DeskCNC.

Tim
[Denver, CO]
Sherline products at Deep Discount
Mach1 & DeskCNC with credit card ordering
www.KTMarketing.com/Sherline