Re: [CAD_CAM_EDM_DRO] Re: DRO meaning in the Artofcnc world

industrialhobbies wrote:

>Mach 2 actually CAN read the encoders, you just need to set up the
>encoders in a special way, the limiting factor, the parallel port can
>only read inputs at about 25khz so you'll have to run a little slow,
>somewhere in the area of 100IPM with a 500 CPR encoder whould give
>solid results.
>
>It cannot "read" the results into the program realtime but you
>can "sync" the virtual DRO's with the actual from time to time.
>
>It's just one of those seldom used features.
>
>

Right, I'm aware of this, but the guy in question was using the Rutex
step/analog servo converters, and unless he made some provisions to
split the encoder signals both to the Rutex AND the parallel port, it
would not be possible to operate that way.

How does Mach2 read 3 encoders? That would take 6 input pins, wouldn't
it?

Jon