Klippy shutdown CAN MCU

Basic Information:

Printer Model: Ender 5+
MCU / Printerboard: Octopus pro 429 V1.0 usb to can host, EBB42 via can
RPI 4
klippy(1).zip (1.5 MB)

Klippy shutdown, unable to connect to mcu EBBCan

Describe your issue:

Printer shut down after approx 2 hrs of printing, I tried to go trough the klippy log, but i’m not understanding the logfile.

Can someone see what went wrong?

Stats 534215.5: gcodein=0  canstat_mcu: bus_state=passive rx_error=0 tx_error=0 tx_retries=0 mcu: mcu_awake=0.052 mcu_task_avg=0.000006 mcu_task_stddev=0.000004 bytes_write=59144584 bytes_read=31444769 bytes_retransmit=848 bytes_invalid=0 send_seq=1635030 receive_seq=1635027 retransmit_seq=1634892 srtt=0.002 rttvar=0.001 rto=0.025 ready_bytes=1522 upcoming_bytes=2190 freq=167998194 canstat_EBBCan: bus_state=passive rx_error=462 tx_error=2146 tx_retries=0 EBBCan: mcu_awake=0.016 mcu_task_avg=0.000014 mcu_task_stddev=0.000022 bytes_write=30192785 bytes_read=24169099 bytes_retransmit=4567 bytes_invalid=50 send_seq=1000188 receive_seq=1000185 retransmit_seq=1000153 srtt=0.004 rttvar=0.003 rto=0.025 ready_bytes=948 upcoming_bytes=0 freq=63998899 adj=63999473 sd_pos=4534750 heater_bed: target=60 temp=60.1 pwm=0.000 sysload=0.08 cputime=13482.832 memavail=3343684 print_time=238178.872 buffer_time=4.631 print_stall=1 extruder: target=205 temp=204.8 pwm=0.507
Stats 534216.5: gcodein=0  canstat_mcu: bus_state=warn rx_error=0 tx_error=0 tx_retries=0 mcu: mcu_awake=0.052 mcu_task_avg=0.000006 mcu_task_stddev=0.000004 bytes_write=59148689 bytes_read=31445355 bytes_retransmit=848 bytes_invalid=0 send_seq=1635102 receive_seq=1635102 retransmit_seq=1634892 srtt=0.001 rttvar=0.000 rto=0.025 ready_bytes=41 upcoming_bytes=0 freq=167998226 canstat_EBBCan: bus_state=passive rx_error=512 tx_error=2338 tx_retries=0 EBBCan: mcu_awake=0.016 mcu_task_avg=0.000014 mcu_task_stddev=0.000022 bytes_write=30193853 bytes_read=24169315 bytes_retransmit=4567 bytes_invalid=50 send_seq=1000208 receive_seq=1000208 retransmit_seq=1000153 srtt=0.006 rttvar=0.003 rto=0.025 ready_bytes=0 upcoming_bytes=0 freq=63998899 adj=63999533 sd_pos=4534750 heater_bed: target=60 temp=60.1 pwm=0.000 sysload=0.08 cputime=13482.869 memavail=3343684 print_time=238178.872 buffer_time=3.630 print_stall=1 extruder: target=205 temp=204.7 pwm=0.507
Stats 534217.5: gcodein=0  canstat_mcu: bus_state=passive rx_error=0 tx_error=0 tx_retries=0 mcu: mcu_awake=0.052 mcu_task_avg=0.000006 mcu_task_stddev=0.000004 bytes_write=59148869 bytes_read=31445636 bytes_retransmit=848 bytes_invalid=0 send_seq=1635113 receive_seq=1635113 retransmit_seq=1634892 srtt=0.000 rttvar=0.000 rto=0.025 ready_bytes=11 upcoming_bytes=0 freq=167998203 canstat_EBBCan: bus_state=passive rx_error=522 tx_error=2515 tx_retries=0 EBBCan: mcu_awake=0.018 mcu_task_avg=0.000014 mcu_task_stddev=0.000021 bytes_write=30193893 bytes_read=24169451 bytes_retransmit=4567 bytes_invalid=50 send_seq=1000212 receive_seq=1000212 retransmit_seq=1000153 srtt=0.006 rttvar=0.003 rto=0.025 ready_bytes=0 upcoming_bytes=0 freq=63998899 adj=63999452 sd_pos=4534750 heater_bed: target=60 temp=60.0 pwm=0.135 sysload=0.08 cputime=13482.891 memavail=3343684 print_time=238178.872 buffer_time=2.630 print_stall=1 extruder: target=205 temp=204.8 pwm=0.507
Stats 534218.5: gcodein=0  canstat_mcu: bus_state=warn rx_error=0 tx_error=0 tx_retries=0 mcu: mcu_awake=0.052 mcu_task_avg=0.000006 mcu_task_stddev=0.000004 bytes_write=59151321 bytes_read=31446097 bytes_retransmit=848 bytes_invalid=0 send_seq=1635163 receive_seq=1635163 retransmit_seq=1634892 srtt=0.002 rttvar=0.001 rto=0.025 ready_bytes=0 upcoming_bytes=0 freq=167998180 canstat_EBBCan: bus_state=passive rx_error=536 tx_error=2562 tx_retries=0 EBBCan: mcu_awake=0.018 mcu_task_avg=0.000014 mcu_task_stddev=0.000021 bytes_write=30194999 bytes_read=24169676 bytes_retransmit=4567 bytes_invalid=50 send_seq=1000233 receive_seq=1000233 retransmit_seq=1000153 srtt=0.004 rttvar=0.002 rto=0.025 ready_bytes=0 upcoming_bytes=0 freq=63998899 adj=63999507 sd_pos=4535190 heater_bed: target=60 temp=60.0 pwm=0.367 sysload=0.08 cputime=13482.930 memavail=3343684 print_time=238180.017 buffer_time=2.775 print_stall=1 extruder: target=205 temp=204.7 pwm=0.507
USB CANBUS bridge 'mcu' is discarding!

Looks like a sort of hardware CAN error.
Maybe there is something happening with EBBCan itself.
As a start, I suggest checking your wiring and monitoring EBB temperature.

I read some posts here concerning “different EBBs and CAN” problems.
In my eyes, the EBB boards lack enough capacitance on the supply voltages.

Good luck, hcet14

I checked all wiring, started a new print, and it failed again but after 7hrs this time, and now it didn’t want to come online anymore.

Checked all again and by wiggeling the connector a lil bit a wire popped out.

It was propably damaged enough to make prints fail, but until that point still attached…

Thanks for looking into it guys!!