Basic question about G30



  • Hi,

    I've been using a Z-probe for quite sometime now without issue.

    But I do have a basic question.

    When we use a G1 command it moves according to the parameters, for example, G1 Xnnn moves on X.

    Does G30 move toward Z min because it's coded that way?

    What happens if there is no Z axis, for example, instead of XYZ we have ABC?

    Not a big deal - I just got to wondering.

    Frederick


  • Moderator

    Far as I know, yes, G30 is hard coded to behave that way, being that the function is to measure the bed surface with a print head mounted probe.

    What else would it be used for?



  • @Phaedrux said in Basic question about G30:

    Far as I know, yes, G30 is hard coded to behave that way, being that the function is to measure the bed surface with a print head mounted probe.

    What else would it be used for?

    What got me to thinking about it was someone's mention of G38.n where you specify the axis.

    Then I realized I had been using G30 without really thinking about how it worked.

    Now I need to create a test config.g with ABC instead of XYZ and see if G30 is still works.

    Thanks.

    Frederick


  • Moderator

    Yeah I'm not sure what it would do without a defined Z axis.


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