Re: A Distributed Control For Tool Changer in EMC

Hi paul as far as i know SPINDLE_ON_INDEX is a bit available on
parallel port that is used to turn on the spindle. Are you sure it
is a DAC channel number that puts spindle speed information coded in
voltage form?
moreover i havent seen MIN_VOLTS_PER_RPM & MAX_VOLTS_PER_RPM
variables in ini files used by emc.

I am interested to know how to get hold of the emc spindle speed,
x,y,z positions, tool number variables etc. Where are these variables
defined? how can i access them from tkio file?
I've already done some experimets with tkio file like printing
a message from tool load functions, setting and reseting a bit
and dont you worry i will learn these things but please do some favor
to teach me these things!!

Thanks and best regards

Asim

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Paul <no.spam27@n...> wrote:
>
> Hi Asim
>
> On Thursday 09 October 2003 6:02 pm, Asim Khan wrote:
> > 4. Also i want to know how can i get hold of the spindle speed
> >     and tool number variable of EMC? so that i can put a
> > corressponding    voltage to some DAC or tool number information
on
> > the port pin.
>
> This information is output on a spare DAC - The channel is
dependant on the
> SINDLE_ON_INDEX and also the scaling parameters MIN_VOLTS_PER_RPM &
> MAX_VOLTS_PER_RPM.
>
> Getting a signal to indicate the required tool number is a little
more
> involved and would certainly need a working knowledge of the source
code.
>
> > 5. One thing that i dont understand is the NML. Please tell me how
> >    does the c source files and the tcltk source files make use of
nml?
>
> Neutral Messaging Language is the method used for passing data from
one part
> of EMC to another. Messages can be passed locally using shared
memory or
> accross a network using TCP - Parts of EMC (e.g. the GUI) could
even be
> running on a totally different operating system such as Windows.
>
> >    does nml holds all off the variables used in emc? like
> >    jog rate, spindle speed? tool number etc?
>
> NML does pass the tool numbers and spindle speed but it is a non-
trivial task
> to make this information available to an external device... Just a
thought..
> NML messages can be passed via an RS232 port, perhaps part of the
protocols
> could be adapted to un on an 8051.
>
> > PS: somebody post it to sourceforge i dont know how to post to sf
> > i am already member to sf but dont know the url to post from
>
> Visit : https://lists.sourceforge.net/lists/listinfo/emc-developers
> for details to subscribe to the Developers list and send your posts
to
> Emc-developers AT lists DOT sourceforge DOT net
>
> Alternatively, email me off-list and I can set up a subscribtion
for you.
>
> Regards, Paul.
>
> --
> irc channel for EMC users at irc.freenode.org
> /join #emc
> and chat to other users (not many there yet).