Re: How to controll spindle speed cont'd

[Ray Henry <rehenry-at-up.net>]

Jacob

I guess if I had to do this today, with what little I know that I can 
manipulate of the EMC, I'd re-write tkio.  With this language I have access 
to commanded spindle speed.  I also have access to parport pins.  I could 
rather easily make an 8 or 12 bit parallel binary out to drive an amp from 
spindle speed. 

Ray



On Saturday 18 May 2002 14:01, you wrote:
> thanks for the reply's, I think as a newby I need to
> understand a few thinks more in detail. 1. I've seen
> that the emc accepts as "M3"/"M5" commands, it also
> accepts "S" (spindle speed) commands. For what I
> understand of it that S should be followed by a number
> that correspond with the desired spindle speed. Or is
> this not a working obtion yet in emc and is the only
> way to controll spindle speed just by the spindle
> increase/decrease buttons? If the "S" command is
> indeed working in emc how does this signal then (in a
> standard configuration) lead to increased/decreased
> spindle speed.
>
> --- Jacob Kranendonk <j_kranendonk-at-yahoo.com> wrote:
> > Hi list,
> > Can anyone tell me how typically a mill with
> > controllable spindle speed out the emc is being set
> > up? I want somehow a possibility to controll
> > laserpower by the emc software. I think I could use
> > the "spindle speed" command for this purpose. But
> > how
> > do I get a signal for this, out of the emc? Does
> > this
> > take extra hardware (like a digital/analog converter
> > or something), or is there a way to get a digital
> > signal to. All I need as a final signal to the laser
> > is a PWM (Puls With Modulated) TTL signal at 5KHZ.
> > Does anyone have a sugestion how I can achieve this,
> > perhaps with the help of some simple IC? Many thanks
> > in advance, Jacob
> >
> >
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