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Parallel Port breakout boards, motherboards, and dedicated accessories / Re: 4th and 5th axis configuration with PMDX-126
« on: March 27, 2019, 10:55:04 PM »From your test #2 results: you measured then same voltage (0.6V) after jogging both directions, even though the LED turned off and on? Hmmmm.....
Do that test one more time, paying attention to how bright the "Pin 8" LED is when it is turned on.
Then remove the wire from the "Pin 8" screw terminal, and then fully tighten the screw terminal. Jog both directions and again measure the voltage on the "Pin 8" screw terminal to the "pcgnd" screw terminal. And see if the brightness on the "Pin 8" LED changes (is it brighter or dimmer than when the wire was attached).
Jog (+) = 0.68 V CW. LED off
Jog (-) = 0.68 V CW. LED on and it is bright.
Wire removed from pin 8 and the screw fully tightened.
Jog (+) = 0.03 V LED is off
Jog (-) = 0.00 V LED is on, same brightness as with wire in pin 8.
Next, try swapping the wiring for the motors on "Pin 8" and "Pin 9" with the motor on "Pin 6" and "Pin 7" (the next set of screw terminals. This means your black wires are now connected to J2 (pins 6 and 7).
Try jogging the axis that is mapped to pins 8 and 9. Does that other motor turn both directions?
Yes, it does turn both directions.
Try jogging the axis that is mapped to pins 6 and 7 (which should be the motor that previously only turned CW). CAn you jog it both directions?
No, it only turn in one direction.