Re: My new mill

Jon,

I see that you are running the X interface for EMC. I find the files xemc
and XEmc in the ftp directory under linux_2_0_36. Are there any readme files
or instructions on how to use these files with the text based EMC program?


Tim
[Denver, CO]

> -----Original Message-----
> From: Jon Elson [mailto:jmelson@...]
> Sent: Friday, May 28, 1999 3:21 PM
> To: CAD_CAM_EDM_DRO@onelist.com
> Subject: Re: [CAD_CAM_EDM_DRO] My new mill
>
>
> From: Jon Elson <jmelson@...>
>
>
>
> Andrew Werby wrote:
>
> > From: Andrew Werby <drewid@...>
> >
> > [I just got my new (old) mill delivered yesterday, and it's
> really a beast!
> > This is a Ramco "Ramill", built to be a CNC mill in the
> mid-eighties. It
> > has servo motors and ballscrews, which should save me some time
> and money
> > over retrofitting an old Bridgeport, which was my first idea.
> Currently, it
> > will accept instructions in g-code, either from the attached keyboard or
> > from a tape drive. But I'd like to convert it to a more modern control
> > system which wouldn't be limited to 999 instructions- some of
> the progams
> > I've been generating run over 2 megs, (and I'm just getting started.) I
> > think I can save the servo amplifiers and most of the relay
> switches, while
> > gutting out the old computer and attaching a standard monitor.
> I'd be happy
> > with something that ran in real time under DOS, if it could
> handle g-code.
>
> I would suggest EMC. It runs under Linux, but Linux offers total MSDOS
> file system compatibility. You can run text-based DOS programs in an
> emulator window, as well as read and write DOS floppies directly in
> Linux. In fact, if you mount a DOS floppy before starting EMC (or
> later, using another window) you could execute a G-code program
> directly off the floppy, if you wanted to.
>
> The reason DOS is unacceptable, is that it is NOT a real-time environment.
> Yes, it seems pretty real time to us slow humans, but for a motion
> control system with a 1 KHz servo update rate (or better) DOS is
> most emphatically NOT real-time. You would have to place hooks
> on every interrupt entry point and write your own real-time
> scheduler to get guaranteed priority for the realtime task. But,
> the worst part is that the DOS environment is not secure!
> Any haywire program could overwrite the motion control
> code or data areas, and cause a hazardous crash! I sure wouldn't
> use such a system!
>
> See my page at : http://ascc.artsci.wustl.edu/~jmelson/CNCconv.html
> and http://ascc.artsci.wustl.edu/~jmelson/EMC.html
>
> For EMC itself, see :
> http://www.isd.cme.nist.gov/projects/emc/emcsoft.html
>
> The software is available for download from the web.
>
> The only thing it sounds like you'd need to buy would be the
> Servo-to-Go card, and maybe a rack of solid-state relays to
> drive the auxilliary stuff.
>
> Servo-to-Go is at : http://www.servotogo.com/
>
> If you have any questions, feel free to email me.
>
> Jon
>
>
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