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  • Ender 3 Random Printer Pauses

    Hi everyone!,

    Im pretty new to 3D printing. Got my first Ender 3 Pro about a month ago and completely consumed by this now.

    I started printing a few longer print time jobs, and have been getting some odd pauses very far into the print.

    Im using the Ender 3 Pro via Octoprint.

    Today, 17.5 hours into a 30 hour ish print, the machine just paused. The terminal in Octoprint shows a message that says 'Changing monitoring state from "Printing" to "Pausing"' each time this happens.

    The last few long prints, its happening each time.

    Here is a few lines in the log when the machine stops.

    Any idea what I should be looking at to trouble shoot this?

    Code:
    Send: N436814 G1 X201.773 Y35.408 E0.02909*102
    Recv: ok
    Send: N436815 G1 X201.853 Y35.943 E0.01831*97
    Recv: TT::205.62205.62 //205.00205.00 BB::60.0060.00 //60.0060.00 @@::6161 [email protected]@::2222
    Recv:
    Recv: ok
    Send: N436816 G1 X201.901 Y36.807 E0.02927*99
    Recv: ok
    Send: N436817 G1 X201.873 Y37.307 E0.01696*106
    Recv: ok
    Send: N436818 G1 X218.025 Y53.459 E0.77318*106
    Recv: ok
    Send: N436819 G1 X218.025 Y52.286 E0.03970*105
    Recv: ok
    Send: N436820 G1 X197.909 Y72.402 E0.96294*101
    Recv: ok
    Send: N436821 G1 X197.909 Y73.642 E0.04197*104
    Recv: TT::205.62205.62 //205.00205.00 BB::60.0160.01 //60.0060.00 @@::6161 [email protected]@::1818
    Recv:
    Recv: ok
    Send: N436822 G1 X218.025 Y93.758 E0.96294*103
    Recv: ok
    Send: N436823 G1 X218.025 Y92.585 E0.03970*104
    Recv: ok
    Send: N436824 G1 X197.909 Y112.701 E0.96294*86
    Recv: ok
    Send: N436825 G1 X197.909 Y113.941 E0.04197*87
    Recv: ok
    Send: N436826 G1 X218.025 Y134.057 E0.96294*87
    Recv: ok
    Send: N436827 G1 X218.025 Y132.884 E0.03970*91
    Changing monitoring state from "Printing" to "Pausing"
    Recv: ok
    Send: N436828 M400*20
    Recv: TT::205.62205.62 //205.00205.00 BB::60.0060.00 //60.0060.00 @@::6060 [email protected]@::2222
    Recv:
    Recv: echo:busy: processing
    Recv: TT::205.04205.04 //205.00205.00 BB::60.0060.00 //60.0060.00 @@::7474 [email protected]@::2222
    Recv:
    Recv: ok
    Send: N436829 M114*21
    Recv: X:218.02 Y:132.88 Z:31.60 E:562.23 Count X:17442 Y:10631 Z:12640
    Recv: ok
    Send: N436830 G91*43
    Recv: ok
    Send: N436831 M83*35
    Recv: ok
    Send: N436832 G1 E-6.5*117
    Recv: ok
    Send: N436833 G1 Z2.5*66
    Recv: ok
    Send: N436834 G90*46
    Recv: ok
    Send: N436835 M83*39
    Recv: ok
    Send: N436836 M104 S0*89
    Recv: ok
    Changing monitoring state from "Pausing" to "Paused"
    Recv: TT::205.00205.00 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::204.48204.48 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::203.89203.89 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::202.85202.85 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::201.53201.53 //0.000.00 BB::59.9959.99 //60.0060.00 @@::00 [email protected]@::2626
    Recv:
    Recv: TT::199.63199.63 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::197.73197.73 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::195.91195.91 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::193.64193.64 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2121
    Recv:
    Recv: TT::191.19191.19 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::188.62188.62 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::186.09186.09 //0.000.00 BB::59.9959.99 //60.0060.00 @@::00 [email protected]@::2626
    Recv:
    Recv: TT::183.37183.37 //0.000.00 BB::59.9759.97 //60.0060.00 @@::00 [email protected]@::3131
    Recv:
    Recv: TT::180.77180.77 //0.000.00 BB::59.9759.97 //60.0060.00 @@::00 [email protected]@::3333
    Recv:
    Recv: TT::178.02178.02 //0.000.00 BB::59.9959.99 //60.0060.00 @@::00 [email protected]@::2929
    Recv:
    Recv: TT::175.67175.67 //0.000.00 BB::59.9959.99 //60.0060.00 @@::00 [email protected]@::3030
    Recv:
    Recv: TT::172.99172.99 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2727
    Recv:
    Recv: TT::170.47170.47 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2727
    Recv:
    Recv: TT::168.12168.12 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2828
    Recv:
    Recv: TT::165.57165.57 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2828
    Recv:
    Recv: TT::163.27163.27 //0.000.00 BB::60.0260.02 //60.0060.00 @@::00 [email protected]@::2020
    Recv:
    Recv: TT::160.77160.77 //0.000.00 BB::60.0260.02 //60.0060.00 @@::00 [email protected]@::1919
    Recv:
    Recv: TT::158.48158.48 //0.000.00 BB::60.0160.01 //60.0060.00 @@::00 [email protected]@::2222
    Recv:
    Recv: TT::156.06156.06 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2525
    Recv:
    Recv: TT::153.91153.91 //0.000.00 BB::60.0260.02 //60.0060.00 @@::00 [email protected]@::1717
    Recv:
    Recv: TT::151.60151.60 //0.000.00 BB::59.9959.99 //60.0060.00 @@::00 [email protected]@::2828
    Recv:
    Recv: TT::149.52149.52 //0.000.00 BB::60.0160.01 //60.0060.00 @@::00 [email protected]@::2020
    Recv:
    Recv: TT::147.34147.34 //0.000.00 BB::60.0160.01 //60.0060.00 @@::00 [email protected]@::2020
    Recv:
    Recv: TT::145.25145.25 //0.000.00 BB::60.0060.00 //60.0060.00 @@::00 [email protected]@::2323
    Recv:
    Changing monitoring state from "Paused" to "Resuming"
    Send: N436837 M109 S205*82
    Recv: T:143.52 /205.00 B:60.01 /60.00 @:0 [email protected]:19 W:?
    Recv: TT::143.19143.19 //205.00205.00 BB::60.0060.00 //60.0060.00 @@::127127 [email protected]@::2323

  • #2
    Maybe the Octopi card is corrupted, try a different card? Print from a SD card instead of Octoprint?

    Comment


    • #3
      In addition to the SD card, make sure you have a 3A power supply for the Pi and a good (shielded) USB cable from the Pi to the printer.

      Cheers

      Comment


      • #4
        I agree, definitely try printing directly from an SD card. The 1st rule of troubleshooting is "divide the problem in half". Your using a printer & OctoPi/OctoPrint. Obviously, you can't eliminate the printer, so that leaves the OctoPi/OctoPrint.

        Comment


        • #5
          All great suggestions. I will print the next large file from the SD.

          Then I will change the cable for the Octoprint, and if that doesnt resolve it, I will re-flash the raspberry pi on a new SD, and start over on that.

          Comment


          • #6
            One thing that I found most curious is that somehow it seems to be receiving a pause command. I have been able to resume each time this has happened, and fortunately the print was salvageable, but the fact that it keeps happening is the concern.

            Comment


            • #7
              Originally posted by Zero1Niner View Post
              One thing that I found most curious is that somehow it seems to be receiving a pause command. I have been able to resume each time this has happened, and fortunately the print was salvageable, but the fact that it keeps happening is the concern.
              I see M400 in the commands above. I don't know about the Enders, but one of my machines doesn't like it. Are you using (or have used) Cura's G-code Post Processing extension?

              Cheers

              Comment


              • #8
                I have had the pauses occur with both Cura and Prusa Slicer.

                I will check out the Post Processing extension.

                What is the M400 command telling the machine to do?

                Comment


                • #9
                  [Description

                  This command causes G-code processing to pause and wait in a loop until all moves in the planner are completed.
                  Usage

                  M400Example

                  Wait for moves to finish before playing a beep

                  M400 M300 S440 P100
                  And, yes, why on Earth is there an M400 in the code at all?

                  BTW, when you have a Marlin question just go to https://marlinfw.org/meta/gcode/. It's the Marlin bible.
                  Last edited by Ender5r; 01-28-2021, 11:38 AM.

                  Comment


                  • #10
                    That link for Marlin is dead. Do you have another, please.?

                    Comment


                    • Ender5r
                      Ender5r commented
                      Editing a comment
                      done. Thx.

                  • #11
                    Its weird. the root link is bad, but googled the error, and the M400 link is working. Couldnt find the correct root link for this.

                    https://marlinfw.org/docs/gcode/M400.html

                    Comment


                    • #12
                      Found the link

                      https://marlinfw.org/meta/gcode/

                      Comment


                      • Ender5r
                        Ender5r commented
                        Editing a comment
                        fixed the link to the post above... same link

                    • #13
                      It works now, Thanks.

                      Comment


                      • #14
                        Huh. So the pause just happened printing directly from the SD card. Wasnt expecting that.

                        Any suggestions on what I should be troubleshooting on the printer?

                        Comment


                        • #15
                          That tells us it's most likely not the printer. In the g-code file, did you comment out all lines with M400 in them?

                          Comment

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