Re: [CAD_CAM_EDM_DRO] Black Box Goals

Hi Mariss;

I've noted various dream sheet submissions about making it with N axii. Why
not open up the architecture to where someone can add as many as they want,
simply by adding another, plugin "axis module"? I know some architechtures
have hardware interrupt problems with the number of interrupt lines available,
etc., but this could be handled Amiga style using one interrupt line signal
that it's time to grab a soft int number indicative of axis(N) off the stack,
and deal with it from there. You got a whole lot more numbers to work with
than PCB traces.

Also, I don't know how many lines would be required, but surely a SCSI buss
cable would be of aid in pluging in as many as one could ask for, and do it
cheaply, in stick it wherever it'll fit mode, or even in a tower box drive cage
type arraingement.

Just a few, "better mousetrap", ideas.....:-)

Bill

On Wed Jan 30 14:10:04 2002, mariss92705, <mariss92705@...> wrote:

>Hi,
>
>Please add anything else that may be of use. I hope to be checking-
>off these items in the coming months as they are completed. With luck
>all will be included.
>
>Mariss
>
>
>Black Box Goals:
>
>Hardware Goals:
>
>(1) 1 to 4 axis. Individual plug-in axis cards.
>(2) Plug-in I/O card.
>(3) Serial PC interface.
>(4) 65,536 evenly spaced speeds. No jitter, Scalable up to MHz range.
>(5) 1 kHz update rate (motion and I/O).
>(6) 8 general purpose outputs (TTL level, LED indicator)
>(7) 8 general purpose inputs (TTL level, LED indicator, PC readable)
>(8) CW, CCW limit switch inputs per axis.
>(9) 2 8-bit A to D inputs (joystick jog?).
>(10) Handshake I/O. "Done" output, "Go" input for external hardware.
>(11) Flash-ROM microcomputer. Make your own improvements.
>(12) Small, cheap, and open architecture.
>
>Software Goals:
>
>(1) G-Code and "other" interface.
>(2) All axies equal and independent. All can run simultaneously.
>(3) Any 2 axis linear and circular interpolation.
>(4) 32-bit absolute position range.
>(5) Continuous path or single segment moves.
>(6) Linear, S-shaped, parabolic, etc. acceleration profiles.
>(7) Constant path velocity along arcs and line segments.
>(8) PC readable on-the-fly axies positions.
>(9) Pause capability. Decel to stop, wait for OK, accel and continue.
>(10) Gear 1 or more axies to any other axies. Any ratio per axis.
>(11) Homing routine.
>(12) Open source code. Make your own improvements.

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