On Saturday 05 October 2019 12:56:25 John Dammeyer wrote: > If you are controlling the speed of your spindle with LinuxCNC instead > of just ON/OFF/DIR, how are you doing this? > > Step/Dir? > > 0V-10V PWM? Check, delivered to the spindle circuitry of a mesa-7i76D, thence to an ebay vfd on my 6040, And thru another ebay vfd is driven by a pwmgen in the 7i90, feeding a spinx1 on the sheldon lathe, from an rpi-3b. The lathe has an encoder, the 6040 does not. The only chance of ever doing any thread cutting would be in very soft material using a threading mill on the 6040, and G2-3 using Z feed might be used. Since its spindle tops at 24k revs, its xy circles at z feed for any potential threading. Threading mills need little red wagon loads of cash though. > > ModBus? > If ModBus RS232 or RS485? > > Some other way? > > Thanks > John > > > "ELS! Nothing else works as well for your Lathe" > Automation Artisans Inc. > www dot autoartisans dot com > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users
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