Re: G-code to stepper controller (?)

Hi,

There motor drivers that incorporare "indexer" functions in the
drive, That means there is a microcomputer that interpretps high
level level commands and turns them into step and direction
internally.

I have shied away from them because they mix into a drive a component
that I feel should not be there.

A CNC system is broken up into several parts. The PC should do the
brains part; work out the trignometery, come up with trajectory of
the motion intended.

Perhaps an external pulse generator can off-load the PC of the burden
of generating the actual pulses. It is not well suited to
that "donkey-work" task.

Either the PC or the freq generator delivers the step and direction
the drive.

The motor drive should be all brawns and no brains. It should take
commands and turn them into many volts and amps to run the motor. It
should be a dumb but very strong servant.

When you try to put brains in a drive, you defeat the purpose of a
drive. It limits what it can do, it is limited by its local
controller. What function should it serve; will it apply to every
application? Not every application uses G-Codes (like 90%).

In my mind, keep the brains where it belongs (the PC) and keep the
drive stupid like it should be. Then eveything is well with the world.

Mariss












--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Matt Evans
<kaptnknemo@y...>" <kaptnknemo@y...> wrote:

> Does anyone know how to convert g-code to a stepper contoller
> xylox/gecko etc.