Re: [CAD_CAM_EDM_DRO] Re: Re: Re: Re: CNC Test File

How many Re:'s can a subject have?! I don't know which reply to reply to. I
think we should consult the Buddist mountain Zen's to connect with Yahoo and
find out, technical support is useless. Maybe telekinesis might get us
somewhere (Pun most definitely intended).

John H.

> Art
>
> Someday I have to try your CNC software and see how it compares. Does

that

> mean I would have to dig up that MS-Windows I burried in the yard? Or can

I

> run it in the windows emulator under Linux?<g>
>
> (comments mixed in)
>
> From: "Art Fenerty" <fenerty@...>
>
> >Jon:
> >
> >Unless I'm mistaked, the BPS of emc will vary more with feedrate than
> >interpolation or trajectory cycles. The next block will process when the
> >previous block is completed in the trajectory cycle. Upping the

trajectory

> >cycle would not do much more than increase resolution by decreasing the
> >velocity of trajection.
>
> The look ahead on the EMC is a couple hundred blocks. Once you get
> beyond that, then the next block is read when the one on the top or
> bottom ot the stack is done. One reason that I could get those rates was
> that the number of steps per unit rather small. I think that the NIST
> hexapod used something like 680 steps per inch.
>
> >Raising the velocity to ridiculous rates will up the BPS to its max. Of
> >course Block size would have a lot to do with it.
>
> Block size is right on. I had a discussion with Tom Kramer, the fellow

who

> wrote the interpreter, and the best way to optimize throughput is to strip
> everything out of the g-code that is not absolutely necessary -- no line
> numbers, only type modal codes when you need to change a mode, remove
> comments, etc -- makes for some pretty unreadable, hard to edit stuff.

For

> those contouring files with lots of 0.002 linear moves it makes sense.
>
> >( been poking around in the emc code ...stumbling like a greenhorn)
> >Art
>
> Most of it is way beyond where I can even dream of reading.
>
> Ray
>
>
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