How to controll spindle speed cont'd

[Jacob Kranendonk <j_kranendonk-at-yahoo.com>]

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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