1665
« on: February 24, 2015, 09:35:57 AM »
You could test direct at the parallel port with a volt meter or better still a scope, to see if Mach is outputting the pulses.
If you only have a voltmeter then you will only see a slight variation in the voltage as you jog, it will depend whether you have active high or low set for the Step pins as to what you will see, it will either be Zero increasing slightly, possibly only mV's or it will be 5v decreasing slightly.
The testing of the Step pins when jogging will be clearer to see, it will go from 0 to 5v and vice versa as you jog back and forth.
Hood