On 1/12/2010 5:22 AM, rng3 wrote: > Gentlemen, > > Thanks to all of you for your quick response and excellent information. It > is a great example of why EMC2 support has such a great reputation. > > I built my first cnc router ( 4' x 8') 10 years ago but have just started > learning EMC2 and converting my cnc machines to it the last few weeks. Up to > now I have always used software step generators. > > Now that you have explained the process, it's limitations and how EMC2 > transmits the step rate information to the hardware step generator it all > makes sense. I knew the drivers I am using can accept a 250 nsec min width, > 2 MHz max pulse rate but did not understand how EMC2 would handle that. > > Thanks again, now I need to do some hardware shopping. > > Rick > > > I know you were asking about hardware step generators, but don't overlook the LPT port as a step output. With the right hardware it is very effective up to 40khz or so which is plenty fast for many machines.
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