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Thread: G66

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  1. #1
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    Aug 2008
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    2

    G66

    I'm brand new to CNC, can someone explain briefly what G66 does?
    thanks much, muzakul8s

  2. #2
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    Feb 2008
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    586
    I believe that's a "Macro Modal" call.
    Works like G65 except stays active until cancelled by a G67. Any lines following a G66 are new parameters passed to the macro program called by the G66. Make sense?

  3. #3
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    Jan 2007
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    91
    here is an example...

    G66P777X5.0Z-.770Q.100;
    X6.0;
    X7.0;
    X8.0;
    G67;
    G0XOZ0;
    M30;

    G66 calls macro 777 and runs it, then it reads next line and moves to X6.0 before it calls macro again, and so on, untill canceled by G67.
    It will make the axis move before it calls macro. Used for say drilling a series of holes.

    G66.1 is different.

    G66.1P777X5.0Z.770R.250;
    X6.0;
    X7.0;
    X8.0;
    G67;
    GOZ0X0;
    M30;

    This way will call macro before any axis moves. Maybe you need to call macro before the axis moves to figure some math needed for the axis move. Make sense?

  4. #4
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    Feb 2020
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    Thanks for bringing the information here about the software and hardware as well. That would help us to explore and learn lots of new things as well. Thumb ups with your further rushmyessay reviews sharing updates and it would be pretty educational material online you have.

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