Basic functions of cnc required by Gcode was Universal Stepper...

Paul,

You may find it helpful to look at the "canonical" commands list as
used by EMC. You can find it/them on the NIST site. (I don't know if
they are in the linuxcnc.org handbook? Ray? Paul?) These are
the "base level" instructions put out by the EMC G code interpreter.

Therefore, a look through the listing shows what "basic" actions a
machine/device must be capable of doing to perform all of the Gcode
which is supported by EMC. And it has a fairly large gcode list
supported.

Hope this helps,

Ballendo

--- In CAD_CAM_EDM_DRO@y..., "Paul R. Hvidston" <paulh@u...> wrote:
> Jon,
>
> I'm confused ( no surprise there ;-) ). Does your board simply
output
> independent channels of step pulses, possibly with trapezoidal
accel/decel?
> If so how does it handle curved paths? Hopefully I'm missing
something here.
>
> On a slightly larger topic, what must such a device be capable of
doing to
> handle the capabilities of G-codes? Is it limited to linear and arc
> profiles? That's all I'm seeing in the G-codes (granted helixes are
just a
> third axis in synchronized linear motion).
>
> Thanks a bunch,
>
> Paul R. Hvidston, N6MGN
> ACKSYS Engineering
> Upland, CA
>