starting job: G92 doesn't work in Repetier so I disconnect/reconnect

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This topic contains 8 replies, has 3 voices, and was last updated by  Ryan 3 weeks, 3 days ago.

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  • #117589

    Phil Roberts
    Participant

    I typically start jobs by moving the tool to the top of the workpiece (as shown in 360.png below).  The issue is, G92 doesn’t work in Repetier Host.  My solution: disconnect and reconnect in Repetier.  This sets the axes at X0 Y0 Z0.  This seems to work most of the time.  However, sometimes after the disconnect/reconnect, the gantry drops.  In the mpcnc.jpg below, the shadow shows how the mill dropped from the start position after disconnecting.

    How can I get G92 to work? Or, how can I prevent gantry from dropping?

    Other info: RAMBO board (not sure which version- how would I find out? bought from V1 ~1.5 years ago) seems to be running Marlin 1.0, Repetier 2.1.6

    Grateful for your help.  Thanks!

     

    Attachments:
    #117592

    Jeffeb3
    Participant

    You’re doing ‘G92 X0 Y0 Z0’?

    I remember problems with this on older firmware. Updating to a newer version of the firmware would solve it. I haven’t heard of the problem in a while.

    1 user thanked author for this post.
    #117595

    Phil Roberts
    Participant

    Exactly, I do G92 X0 Y0 Z0, but nothing happens.  Is there a good reference/link for how to update firmware?

     

    EDIT: I’ll give this page a shot: https://www.v1engineering.com/marlin-firmware/

    #117598

    Jeffeb3
    Participant

    Yep, that’s it.

    1 user thanked author for this post.
    #118406

    Phil Roberts
    Participant

    I reinstalled the firmware.  It seemed to change the behavior, but not fix it.  Now if I run G92 X0 Y0 Z0, it seems to partly accept it.  For example, if I turn on the machine the x axis is at 0.  If I move to X50 and then do G92 X0, the log shows X:0.00 but the manual control still shows X at 50.  However, if I try to move -10, it moves +40 and then shows x40 on the manual control?

    I’m stumped.  Should I try to do the firmware again?  I am running dual end-stops in case that contributes.  Should I try a different controller, maybe cncjs (was going to try Octoprint but it needs python 2.7?)

    edit: I installed the MPCNC_Rambo_T8_16T_LCD_DualEndstop zip from here: https://github.com/Allted/Marlin

    edit2: just noticed I was using arduino 1.8.5 will update and try again

    edit 3: now G92 behavior same as initial situation

    • This reply was modified 3 weeks, 4 days ago by  Phil Roberts.
    • This reply was modified 3 weeks, 4 days ago by  Phil Roberts.
    • This reply was modified 3 weeks, 4 days ago by  Phil Roberts.
    #118412

    Ryan
    Keymaster

    Repetier does not recognize the G92 command as far as I know.

    1 user thanked author for this post.
    #118461

    Phil Roberts
    Participant

    Goodbye repetier then.  Thanks for your help Jeff and Ryan.  Btw Jeff, I’ve read so many of your posts, I always read your username a Jefe (ie spanish pronunciation).  Anywho thanks and I think I’ll try cncjs and report back.

    update: WE ARE BACK IN BUSINESS!  The cncjs desktop app did the trick.  Thanks gents!

    • This reply was modified 3 weeks, 4 days ago by  Phil Roberts.
    #118491

    Jeffeb3
    Participant

    It happens a lot. Ryan sometimes calls me Heffe too. But my last name starts with Eb, and back in the aol days, I tried jeffeb, and then that got full of spam so I went to jeffeb2 and then that got full of spam so I switched to jeffeb3, then spam filters were invented.

    #118594

    Ryan
    Keymaster

    Shhhh, Heffe, you don’t need to lie we are all trusted friends here. Your identity is safe with us El Jefe de CNC!

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