CAN Toolboard not triggering pause on extruder temperature fault

brendon

Last night I had a print fail due to a heater fault on the extruder. Unfortunately the fault on the extruder did not trigger the printer to pause, causing the machine to attempt to continue printing with a cold block. The slowly cooling hotend caused the cold filament to stopped fusing, which then interfered with the part cooling duct/bltouch, ripping them off and breaking them. The machine continued trying to print with a room temperature nozzle for several more hours. I can easily replace those pieces and get back up and running, but I'd like to understand why it happened so I can prevent a repeat.

The extruder is being ran with a CAN Toolboard v1.1. The machine has a Duet3 mainboard and all the software is the released version of 3.3.

brendon

Here is my config.g

; Configuration file for Duet 3 (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Oct 08 2020 13:25:03 GMT-0400 (Eastern Daylight Time)

; General preferences
G90                                          ; send absolute coordinates...
M83                                          ; ...but relative extruder moves
M550 P"CustomCore"                           ; set printer name
M669 K1                                      ; select CoreXY mode

; Network
M552 P0.0.0.0 S1                             ; enable network and acquire dynamic address via DHCP
M586 P0 S1                                   ; enable HTTP
M586 P1 S0                                   ; disable FTP
M586 P2 S0                                   ; disable Telnet

; Drives
M569 P0.0 S1                                 ; physical drive 0.0 goes forwards
M569 P0.1 S1                                 ; physical drive 0.1 goes forwards
M569 P0.2 S1                                 ; physical drive 0.2 goes forwards
M569 P0.3 S1                                 ; physical drive 0.3 goes forwards
M569 P0.4 S1                                 ; physical drive 0.4 goes forwards
M569 P0.5 S1                                 ; physical drive 0.5 goes forwards

M584 X0.1 Y0.2 Z0.5:0.3:0.4 E20.0            ; set drive mapping
M350 X16 Y16 Z16:16:16 E16 I1                ; configure microstepping with interpolation
M92 X160 Y160 Z3200:3200:3200 E398           ; set steps per mm
M566 X600 Y600 Z120:120:120 E300             ; set maximum instantaneous speed changes (mm/min)
M203 X60000 Y60000 Z600:600:600 E3600        ; set maximum speeds (mm/min)
M201 X2500 Y2500 Z20:20:20 E5000             ; set accelerations (mm/s^2)
M906 X1600 Y1600 Z1600:1600:1600 E1400 I30   ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                      ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                             ; set axis minima
M208 X320 Y300 Z300 S0                       ; set axis maxima

; Endstops
M574 X1 S3                                   ; configure sensorless homing for low end of x
M574 Y2 S3                                   ; configure sensorless homing for high end of Y
M574 Z1 S2; P"io3.in"                        ; configure Z-probe endstop for low end on Z
M915 X Y S5 R0 F0

; Z-Probe
M558 P9 C"20.io0.in" H5 F360 T20000          ; Set Z probe type to switch, the axes for which it is used and the dive height + speeds
M950 S0 C"20.io0.out"                        ; create servo pin 0 for BLTouch
G31 P500 X0 Y-43 Z0.64                       ; set Z probe trigger value, offset and trigger height
M557 X38:295 Y-3:252 P3                      ; define mesh grid

; leadscrew locations
M671 X-18:354:169 Y77:77:343 S3

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                           ; create bed heater output on out0 and map it to sensor 0
M140 H0                                      ; map heated bed to heater 0
M143 H0 S150                                 ; set temperature limit for heater 0 to 80C
M308 S1 P"20.temp0" Y"pt1000" L-25           ; configure sensor 1 as PT1000 on pin temp1
M950 H1 C"20.out0" T1                        ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 A407.5 C228.4 D2.9
M143 H1 S330

; Fans
M950 F0 C"out3" Q500                         ; create fan 0 on pin out3 and set its frequency
M106 P0 S0 H-1                               ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"20.out1"                           ; create fan 1 on pin out4 and set its frequency
M106 P1 S1 H1 T80                            ; set fan 1 value. Thermostatic control is turned on

; part cooling ssr
M950 F2 C"out7"
M106 P2 S0

; Tools
M563 P0 D0 H1 F2                             ; define tool 0
G10 P0 X0 Y0 Z0                              ; set tool 0 axis offsets
G10 P0 R0 S0                                 ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

Alex.cr

I can confirm that I am having the same issue. A temp fault on a V1.1 toolboard running 3.3 does not trigger a pause.

dc42

@brendon @alex-cr I confirm this is a bug. I have scheduled it for fixing in release 3.4.

brendon

@dc42 Thanks for the update, I'll keep an eye on the release notes!