Gcode Turn A axis CCW


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Thread: Gcode Turn A axis CCW

  1. #1
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    Default Gcode Turn A axis CCW

    The stepper will turn a horizontal Ellis Divider- 40:1
    8 divisions or 45deg
    The Gcode Ive written
    G0 G90 G20
    A45 F200
    M30
    222.222 is written in Motor Tuning-A axis-Steps per

    Lets say after drilling #3 hole and I need to go back to #1 position,
    What code is needed to make the stepper turn back, CCW, to #1 position ?

    This is my first attempt at Cnc and Mach3.
    All is wired up on my bench.
    PS
    Stop switch
    Gecko 540
    Keling 23/382oz-1.8° /200 Steps Per Rev
    Mach3

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  2. #2
    Community Moderator ger21's Avatar
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    G0 A-45
    ??

    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)


  3. #3
    Community Moderator Al_The_Man's Avatar
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    G90 is absolute, wouldn't it be A0?
    G91 -45 if relative?
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    Ive typed G90 A0 and G91 -45 in MDI, the stepper still goes CW. but the ref counter 4 goes to 0 (zero)



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    Community Moderator Al_The_Man's Avatar
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    Sounds like the step is working, but the dir signal is not changing?
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    In Ports/Pins- Motor Output
    A-enabled, Step pin 8, Dir pin 9, Dir Low ckd, Step Low ckd,
    Step port 1, Dir port 1.

    Is this relative?



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    Community Moderator Al_The_Man's Avatar
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    May have to monitor the status of the pin, either at the PP or at the drive and see if it changes with direction?
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  8. #8
    Community Moderator ger21's Avatar
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    There are a couple checkboxes in General config that mat need to be changed. Something about rollover (don't have Mach on this PC)

    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)


  9. #9
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    Under Ports/Pins>Motor Outputs>A axis, I changed Step Low Active to Disabled and it worked.

    Dont understand why it does this.

    G0 A45 CW
    G0 A-45 CCW

    I have cheat sheets w/ all G and M codes.
    and by modal groups.
    But is there any reference for definitions in understandable terms?



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    Quote Originally Posted by ger21 View Post
    There are a couple checkboxes in General config that mat need to be changed. Something about rollover (don't have Mach on this PC)
    In Gen Config>Rotational there is Rot 360 rollover, Ang Short Rot on G0 and Rotational Soft Limits which is ckd by default.



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