Homing – prep_null encountered

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  • #7353
    mristau
    Member

    prep_null encountered when homing. Any thoughts on why much appreciated.
    (firmware build 435.10/v.0.97, platform 1.00/v. 8.00)

    G28.2 X0 Y0 Z0
    tinyg [mm] ok>
    coor:0,dist:1,stat:9
    (Z)
    posz:-54.277,feed:200.00,vel:200.00,momo:1
    posz:-53.461
    posz:-52.644
    …..etc…..
    posz:-1.931
    posz:-1.114
    posz:-0.298
    posz:0.519
    posz:1.336
    posz:2.152
    posz:2.937,vel:66.65
    posz:2.942,vel:0.18
    posz:2.751,feed:50.00,vel:50.00
    posz:2.636,vel:0.25
    posz:1.898,feed:200.00,vel:200.00
    posz:1.083
    posz:0.269
    posz:-0.546
    posz:-1.360
    posz:-2.192
    prep_null encountered <<<<<<<<<<<<
    posz:65.000,vel:0.000
    (X)
    posx:-3.093,posz:0.000,feed:3000.00,vel:800.00
    posx:-6.359
    posx:-9.626
    posx:-11.119,vel:2.61
    posx:-10.709,feed:100.00,vel:100.00
    posx:-10.301
    posx:-10.007,vel:3.50
    posx:-6.947,feed:3000.00,vel:800.00
    prep_null encountered <<<<<<<<<<<<
    posx:-1095.000,vel:0.00
    posx:0.000,posy:-3.026,vel:800.00
    (Y)
    posy:-6.293
    posy:-9.559
    posy:-10.919,vel:2.61
    posy:-10.526,feed:100.00,vel:100.00
    posy:-10.117
    posy:-9.966,vel:3.50
    posy:-6.906,feed:3000.00,vel:800.00
    prep_null encountered <<<<<<<<<<<<
    posy:-1095.000,vel:0.00
    posy:0.000,feed:0.00,coor:1,dist:0,momo:4,stat:3

    #7354
    mristau
    Member

    Also now getting prep_null with G0 commands:

    posx:510.703,posy:510.703
    posx:523.766,posy:523.766
    posx:536.830,posy:536.830
    posx:549.589,posy:549.589,vel:2262.74
    prep_null encountered <<<<<<<<<<<<
    posx:550.000,posy:550.000,vel:0.00,stat:3

    (The error persists after a board reset + a $defa=1)

    • This reply was modified 9 years, 9 months ago by mristau.
    #7366
    cmcgrath5035
    Moderator

    I was hoping someone would comment, I have no useful experience with this status message.

    Still occurring?
    All Gcodes or just some?

    Your tinyG FW is not the most current (438.02 is most current), but can’t say that would resolve.

    Perhaps post your settings and the (or one of) offending Gcode files.
    Suggestion: follow procedure here:

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