Re: [CAD_CAM_EDM_DRO] Re: Building EMC software

Hi Keith,

You're using the wrong backplot!... For some reason backplot appears twice
on the EMC GUI and the one under 'Scripts' doesn't work. Look in the 'View'
menu and you should see another one at the bottom. This won't, however, be
the latest 6-axis version. You can download this from
www.linuxcnc.org/dropbox. Get tlbackplot.vert, copy it into
/usr/local/emc/plat/nonrealtime/bin/ and rename it to 'tkbackplot' (no dot,
no extension)

Ian
--
Ian W. Wright
Sheffield UK
www.iw63.freeserve.co.uk

----- Original Message -----
From: "OUTWATER ~ KEITH J /5G3110" <vac4050@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: 11 April 2001 15:42
Subject: Re: [CAD_CAM_EDM_DRO] Re: Building EMC software


> Ray -
> Thanks for the info!
>
> I did some hacking on the EMC source tree last night and was able to get
EMC
> to build under RH7.0 with 2.2.18 and rtl-3.0. Only problem now is that
when
> I invoke tkbackplot from the simulator, all I get is a blank, gray display
for
> tkbackplot. I'm not using the same tclx lib version as the original emc
source
> (my version is more recent). Maybe that's part of the problem...
>
> Keith
>
>
> > Keith
> >
> > Welcome - comments are mixed in.
> >
> > From: OUTWATER ~ KEITH J /5G3110 <vac4050@...>
> > Subject: Building EMC software
> >
> > <s>emc-1.17 dosen't want to build under this setup. I have a couple of
> > >questions:
> >
> > Yep! You've been caught in the Red Hat confusion. Folks everywhere
have
> > been trashing Red Hat for shipping 7.0 with an experimental compiler.
The
> > simplist solution is to wait a bit and pay $10.00 for the BDI.
> >
> > >1. EMC seems to be heavily dependent on the specific versions of the
> > >kernel and rtlinux. Is there any future plan to use the 'standard'
GNU
> > >autoconf/automake/configure tools to make the build process a little
> > >easier? for example, I see a lot of copying and linking going on to a
> > >platform specific directory and there appear to be separate
spec/definition
> > >files for each platorm, OS and rtlinx variant.
> >
> > Good eye. The biggest reason for the many different directories and the
> > install files that purport to find the correct ones for the system being
> > used is that the evolution of the New Mexico Tech rtlinux has been so
rapid
> > and the changes so great that there is no way to make on size fit all
and
> > still optimize motion control. In the first releases, Fred at NIST had
to
> > modify the rtlinux code in order to get it to work at all. In more
recent
> > releases, they have been able to make adjustments to the EMC code itself
to
> > match up with the rtlinux being used.
> >
> > Many of the code files have bunches of ifdef ... endif statements for
each
> > possible combination. It's a lot better than it was a year ago.
> >
> > Now that the real-time OS universe is settling out into about three or
four
> > approaches and Linus and the core developers are deciding what to do to
put
> > real time in the next major release we should see a more universal EMC
> > release before to long.
> >
> > >2. If not (or in the meantime), is there an EMC package that will
copile
> > >with rtlinux-3.0 and kernel 2.2.18?
> >
> > Yes but not easily with the default compiler sent with RH 7.0 What I'd
> > suggest is that you repost this to the emc@... list. I believe
that I
> > read something there where it had been done with RH 7.0. They added a
more
> > stable compiler and libraries and told install to use that instead.
> >
> > >3. Finally, for anyone out there who knows a lot about plasma cutters
(I
> > don't):
> >
> > I don't know much about flame tables but I service a couple of them. In
> > machining, we call it tool offset. We move the tool over enough so that
> > the final part is the size that it was drawn and programmed to. In
cutting
> > they tend to call it kerf. The effect is the same and yes the EMC can
do
> > tool radius compensation. For kerf you would just enter the diameter of
> > the flame into the tool table and use g41 or g42 depending on which side
of
> > the line you want the flame to follow.
> >
> > Ray
> >
> >
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