Run this test:
- Enter the speed and M3 commands via MDI as you were doing (i.e. "S1000 M3")
- Look at the LED on the PMDX-126 for pin 16 (this is on connector J6, near the transformer)
Do you see the LED on or flashing/blinking? It may be on but dim, depending on your maximum spindle speed (the speed used for this test should be at least 1/2 of full speed). If the "Pin 16" LED is off, then enter another "M3" command. Does the "Pin 16" LED turn on?
If the "Pin 16" LED does not turn on with the first command, but *does* turn on with the second, something is not working right in either Mach3 of the SmoothStepper. Try setting the spindle "spin up" delay to zero and see if that works (in the Config, Ports & Pins, Spindle Setup tab).
If the ""Pin 16" LED does turn on with the first command, yet your spindle is still not turning, reply here and I'll give you some other things to test.
Have you read our app note about using the SmoothStepper with the PMDX-126 and PMDX-107? See AN002 here:
http://www.pmdx.com/AppNotesThere are newer versions of the SmoothStepper plug-in since that app note was written. But it will give you some settings to check that were not obvious to me when I first tried this board combination.
Bob