I have a problem that I cannot get the ESS to run a stepper motor as a step and direction  spindle.. I cannot get the ESS to put out a continuous stream of pulses by an M3 S300 command. Surely the ESS should be capable of running a step and direction spindle. There is even a box for that in the ESS config file. So can you just check that function to see if you can get a spindle to use the m3 command using step and direction?
 A few minutes ago I  set up a G540 with a stepper motor using the parallel port and verified that Mach3 does run a stepper motor continuously as a spindle using step and direction. Any help would be appreciated.
 Dan Mauch