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  1. #21
    Please do not be offended by this:

    You are wasting your time the parallel port! You should seriously consider buying a motion control board like we have all suggested previously.
    Last edited by komatias; 28-09-2015 at 04:25 PM.
    https://emvioeng.com
    Machine tools and 3D printing supplies. Expanding constantly.

  2. #22
    [QUOTE=JAZZCNC;72299]It's more to do with the Controller issuing the step pulse on the rising edge and the drive set to process it on the falling edge there becomes a timing issue so when a direction change occurs the step is in front of the Dir and a step or MS is lost on each change of direction.

    Just a thank you for this, I changed the settings in ports and pins and no more missing steps, round circles and pockets that are clean, I am hugely grateful

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