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  1. #1
    Join Date
    Oct 2003
    Posts
    208

    z axis direction question.

    the way my cnc table is designed the x and y axis both go in the positive direction when i tell the program (turbocnc) to jog in the positive + dricetion.

    my problem is when i tell the z axis to jog in the positive direction ( i have the motor mounted on top of the axis )in the program, it actually goes in the opposite direction on my cnc table.

    by default the motors turn clockwise when told to jog in the + direction.

    how do i set the parameters in turbocnc so that the motor turns counter clockwise when it is told to jog in the positive direction instead of clockwise?

    i am using a xylotex 3 axis driver and the motors that came with it.

  2. #2
    Join Date
    Apr 2004
    Posts
    678
    You can also swap motor leads to make them go the other direction.

  3. #3
    Join Date
    Jul 2003
    Posts
    196
    I'm going from memory here, but you can change the direction within the software. I believe it's the line "LowIsPositive=True", just change the true to false and the steppers will go the opposite direction. If it's not this line, then it's "IsActiveLow=True". I'm at work right now and can't tell you which line it is for sure, but I had to do the same thing on my machine.

    jgro
    http://jgroshoppages.blogspot.com/

  4. #4
    Join Date
    Mar 2003
    Posts
    35538
    Is it only the wrong direction when you jog? Or does it go in the wrong direction while running g code as well? If both, change it in the software as mentioned above.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

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