On Mon, 2007-12-24 at 19:01 +0100, Geert De Pecker wrote:
> It is the C11 multifunction board. Main reasons where the isolated
> analog voltage and the relay to enable me to stop the motor when the job
> is finished.
> 

>From a brief look at the documentation, it looks like you need one of
the parallel port pins to put out a O to 24 kHz signal based on the
spindle speed command. If you have a reasonably fast PC, that should not
be a problem. So in your HAL file, you might connect,

motion.spindle-speed-out OUT float (spindle speed in RPM)
to
scale.X.in (to scale RPM to kHz such that full RPM equals 24kHz)

scale.X.out
to
siggen.X.frequency

siggen.<chan>.square
to
conv-float-bit.N.in (which doesn't seem to exist, check:
http://www.linuxcnc.org/docs/html/man/man9/
maybe conv-float-u32 then conv-u32-bit? Or, should be easy to write a
new HAL component.
)

conv-float-bit.N.out
to
parport.0.pin-XX-out

This is a rough guess. There are allot of details missing, but may get
you started.

-- 
Kirk Wallace (California, USA
http://www.wallacecompany.com/machine_shop/ 
Hardinge HNC lathe,
Bridgeport mill conversion, doing XY now,
Zubal lathe conversion pending)


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