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    G0 move seizes when G29 S1 active, fine when G29 S2

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    • Phaedruxundefined
      Phaedrux Moderator
      last edited by

      Please post the results of M122 and your entire config.g

      Z-Bot CoreXY Build | Thingiverse Profile

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      • jackstackundefined
        jackstack
        last edited by

        config.g

        Not sure if M122 has to be after i replicate the failure.

        Thanks!

        11:44:32 PMM122
        === Diagnostics ===
        RepRapFirmware for Duet 2 WiFi/Ethernet version 2.05.1 running on Duet WiFi 1.02 or later
        Board ID: 08DGM-917NK-F2MS4-7JTDL-3SJ6S-TWUNH
        Used output buffers: 3 of 24 (7 max)
        === RTOS ===
        Static ram: 25712
        Dynamic ram: 93076 of which 0 recycled
        Exception stack ram used: 440
        Never used ram: 11844
        Tasks: NETWORK(ready,764) HEAT(blocked,872) MAIN(running,3736) IDLE(ready,160)
        Owned mutexes:
        === Platform ===
        Last reset 00:36:28 ago, cause: software
        Last software reset at 2021-01-28 23:08, reason: User, spinning module GCodes, available RAM 11836 bytes (slot 1)
        Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
        Error status: 0
        Free file entries: 10
        SD card 0 detected, interface speed: 20.0MBytes/sec
        SD card longest block write time: 0.0ms, max retries 0
        MCU temperature: min 27.1, current 27.3, max 28.9
        Supply voltage: min 22.3, current 24.1, max 25.8, under voltage events: 0, over voltage events: 0, power good: yes
        Driver 0: standstill, SG min/max 0/280
        Driver 1: standstill, SG min/max 0/1023
        Driver 2: standstill, SG min/max not available
        Driver 3: standstill, SG min/max not available
        Driver 4: standstill, SG min/max not available
        Date/time: 2021-01-28 23:44:30
        Cache data hit count 4294967295
        Slowest loop: 15.78ms; fastest: 0.06ms
        I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
        === Move ===
        Hiccups: 0, FreeDm: 160, MinFreeDm: 154, MaxWait: 72615ms
        Bed compensation in use: none, comp offset 0.000
        === DDARing ===
        Scheduled moves: 36, completed moves: 36, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
        === Heat ===
        Bed heaters = -1 -1 -1 -1, chamberHeaters = -1 -1
        Heater 1 is on, I-accum = 0.0
        === GCodes ===
        Segments left: 0
        Stack records: 2 allocated, 0 in use
        Movement lock held by null
        http is idle in state(s) 0
        telnet is idle in state(s) 0
        file is idle in state(s) 0
        serial is idle in state(s) 0
        aux is idle in state(s) 0
        daemon is idle in state(s) 0
        queue is idle in state(s) 0
        autopause is idle in state(s) 0
        Code queue is empty.
        === Network ===
        Slowest loop: 15.48ms; fastest: 0.01ms
        Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
        HTTP sessions: 1 of 8

        • WiFi -
          Network state is running
          WiFi module is connected to access point
          Failed messages: pending 0, notready 0, noresp 0
          WiFi firmware version 1.23
          WiFi MAC address 60:01:94:2e:d0:ab
          WiFi Vcc 3.37, reset reason Turned on by main processor
          WiFi flash size 4194304, free heap 22896
          WiFi IP address 192.168.1.115
          WiFi signal strength -56dBm, reconnections 0, sleep mode modem
          Socket states: 0 0 0 0 0 0 0 0
        Phaedruxundefined 1 Reply Last reply Reply Quote 0
        • Vetiundefined
          Veti
          last edited by Veti

          post a picture of the height map

          M201 X100.00 Y500.00 Z5.00

          also your accelerations for z is really low

          jackstackundefined 1 Reply Last reply Reply Quote 0
          • Phaedruxundefined
            Phaedrux Moderator @jackstack
            last edited by

            @jackstack said in G0 move seizes when G29 S1 active, fine when G29 S2:

            Not sure if M122 has to be after i replicate the failure.

            ideally, but I mostly just wanted to see if there were hiccups being reported. But you're using x16 microstepping so I think that is unlikely.

            As Veti notes, your Z accel is quite low. Is it that low for a mechanical reason? Raising it to ~100 should be a bit better for mesh compensation adjustments.

            You're also trying to use 2800ma on the Y motor. That will be capped at 2400ma which is the max for the Duet2. Do be sure your board as active cooling.

            Z-Bot CoreXY Build | Thingiverse Profile

            jackstackundefined 1 Reply Last reply Reply Quote 0
            • jackstackundefined
              jackstack @Veti
              last edited by

              @Veti 7e71f3ba-2957-4e22-9187-8e186959beec-image.png

              Important to preface that the bed is massive, unheated and fixed, and I'm not using ABL sensor. It's manually generated mesh map with a Z end stop below the bed about 3mm. I couldn't find any recommendation for resetting Z0 datum manually, but single axis moves have been fine with G29 S1 eg. moving from X min to x max Z has responded and maintained consistent height above bed and in the slicer it compensates down to initial layer reference to the mesh bed.

              Vetiundefined 1 Reply Last reply Reply Quote 0
              • jackstackundefined
                jackstack @Phaedrux
                last edited by

                @Phaedrux Huh, I thought Duet 2 wifi was listed as 3A max for stepper. Is it current limiting to 2400 or do I need to set it to 2400. Based on the stepper motor sizing forum page, the only "not ideal" setting of the nema 23 I'm using is its 5.4 mH.

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                • Vetiundefined
                  Veti
                  last edited by

                  all i can think of when i see that heighmap is. no

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                  • Phaedruxundefined
                    Phaedrux Moderator
                    last edited by

                    The deviation on that heightmap isn't too bad given the size. But there shouldn't be such an extreme offset from Z0.

                    Can you post your homing files? bed.g if used?

                    And can you give a better explanation of how you're using the "probe"?

                    Given the large amount of adjustment being requested you may need to reduce the initial layer speeds quite a bit. Plus you're saying that it's the Y axis that is stalling on that first rapid move. The high steps per mm of the Y axis may require reduced max speeds and lower acceleration.

                    Z-Bot CoreXY Build | Thingiverse Profile

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                    • Vetiundefined
                      Veti @jackstack
                      last edited by

                      @jackstack said in G0 move seizes when G29 S1 active, fine when G29 S2:

                      I'm not using ABL sensor

                      is it planned? it would make it a lot easier

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                      • jackstackundefined
                        jackstack
                        last edited by

                        @Veti @Phaedrux

                        Yes, not using a ABL was planned. I have some adjustment for the Z end stop so I can decrease that ~3mm offset and do a more consistent job of generating the mesh bed. The scale of the display does make it seem horrible but I'm using a large nozzle so theres margin here compared to a .4mm nozzle.homeall.g

                        In terms of Y stepper, i was actually having worse performance running a lower acceleration for Y, speed is reasonable due to diminished torque at higher RPM but the G0 also failed at F1200 mm/minbed.g

                        As for "probe" I don't have one. I have a Z end stop that sets min axis point. M558 P0 H5 F120 T1200 "P0" sets it to no probe and it prompts you to manually job the z down to touch the bed.

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                        • Vetiundefined
                          Veti
                          last edited by

                          you can use something like this. (i use it on my delta)

                          https://de.aliexpress.com/item/32838312776.html

                          cheap and works well.

                          just probe the bed once and remove it.

                          jackstackundefined 1 Reply Last reply Reply Quote 0
                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

                            G1 H2 Y5 F1000 ; go back a few mm
                            G1 H1 Y-1923 F360 ; move slowly to Y axis endstops once more (second pass)
                            G1 H1 X-915 F1800 ; move quickly to X axis endstops and stop there (first pass)
                            G1 H2 X5 F1800 ; go back a few mm

                            Don't use H2 on the XY moves to back away from the endstops. otherwise the homeall looks ok.

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • jackstackundefined
                              jackstack @Phaedrux
                              last edited by

                              @Phaedrux Should it just be omitted then? H0 explicit but also default.

                              Thanks!

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                              • Phaedruxundefined
                                Phaedrux Moderator
                                last edited by

                                yes, H0 is the default if no H parameter is supplied.

                                Z-Bot CoreXY Build | Thingiverse Profile

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                                • jackstackundefined
                                  jackstack @Veti
                                  last edited by

                                  @Veti Imma have to check those out! way easier than manually measuring lol Mechanically my printers designed as a set and forget for at least several prints.

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