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  1. #1

    output issues on NVCMV2.1

    I have a Mach3 with a NVCMV2.1 controller. I have configured the ports and pins as the manual says and can't get the spindle outputs or the normal outputs such output# 5 to operate. I am using "DoOemButton(235)" to turn on output#5, and it won't work. I have changed the driver, changed the USB cord, I have checked and rechecked the ports and pins setup. I must be missing something...Please help

  2. #2
    Member
    Join Date
    Apr 2022
    Posts
    42

    Re: output issues on NVCMV2.1

    I think they all open collector outputs. There are no power on them just sitting transistors waiting for you to hook up power and load.
    http://www.learningaboutelectronics....tor-output.png
    You can provide power from VFD or controller itself, they offer +/- 12V for that reason.
    The photo on the link shows internal ground but your controller doesn’t have it .

  3. #3
    Member
    Join Date
    Dec 2022
    Posts
    2

    Re: output issues on NVCMV2.1

    Perhaps you must enable your Ports - It only is a small hook in the software interface.

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