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  1. #1
    Join Date
    Aug 2009
    Posts
    1573

    Re: Reversing axis direction in linuxcnc

    Quote Originally Posted by Goemon View Post
    Is there an advantage to reversing the wires on the motors instead of adding a "-" in the INI?
    ...depends on why the machine axis/joint is running backwards from normal. The next time you or someone changes CNC controller do not have to remember "Oh, I forgot that one of the axis is backwards"

    my two cents,
    DJ

  2. #2
    Join Date
    Jan 2018
    Posts
    1516

    Re: Reversing axis direction in linuxcnc

    Quote Originally Posted by machinehop5 View Post
    ...depends on why the machine axis/joint is running backwards from normal. The next time you or someone changes CNC controller do not have to remember "Oh, I forgot that one of the axis is backwards"

    my two cents,
    DJ
    Yeah. Normally depends on wether you fit the motor on the left or right of the X table.
    If I remermber correctly you can swap the wires from A+A- to B+B- and the B+B- to A+A- and that will switch the motor direction.
    It's easier in Mach.
    You can go into soft limits page and just check the 'reversed' box and job done.
    I've also (accidentally) changed axis from 'active low' to 'active high' once, and the direction changed.

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