Firmware 3.4b7 - firmware retraction bug

Phaedrux

@Diamondback No it shouldn't damage anything. I think what happens is that the back emf equals the input voltage and the driver basically detects that as a possible disconnect.

Have you shared your full config.g yet?

Diamondback

@phaedrux said in Firmware 3.4b7 - firmware retraction bug:

@Diamondback No it shouldn't damage anything. I think what happens is that the back emf equals the input voltage and the driver basically detects that as a possible disconnect.

Have you shared your full config.g yet?

Here you go:

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun May 10 2020 15:03:19 GMT+0200 (Mitteleuropäische Sommerzeit)

; General preferences
;M929 S3                                        ;enable debug logging
M575 P1 S1 B57600                               ;Enable PanelDue Port
G90                                             ; send absolute coordinates...
M83                                             ; ...but relative extruder moves
M550 P"V-Core Pro"                              ; set printer name

M669 K1                                         ; select CoreXY mode

; Network
M552 S1                                         ; enable network

; Drives
M569 P0 S0                                      ; stepper X/Y
M569 P1 S0                                      ; stepper X/Y
M569 P2 S1                                      ; stepper Coupler
M569 P3 S0                                      ; stepper E1
M569 P4 S0                                      ; stepper E2
M569 P5 S0                                      ; stepper E3
M569 P6 S0                                      ; stepper E4
M569 P7 S0                                      ; stepper Z1
M569 P8 S0                                      ; stepper Z2
M569 P9 S0                                      ; stepper Z3

M584 X0 Y1 C2 Z7:8:9                            ; set drive mapping (motion system)
M584 E3:4:5:6                                   ; set drive mapping (extruders)

; Axis Limits
if !exists(global.hasRunInit)
	global minY = -266
	global maxY = 115

M208 X-148:160 Y{global.minY,global.maxY}       ; set axis minima & maxima				RRF 3.4
M208 C0:250 Z-2:270                             ; set axis minima & maxima

M671 X-203:-12:216 Y-179:222:-179 S30             ; set Z leadscrew positions

M92 X80.00 Y80.00 C200.00 Z400.00               ; set steps per mm
M350 X16 Y16 I1                                 ; configure microstepping with interpolation
M350 C16 Z16 I1                                 ; configure microstepping with interpolation
M566 X600 Y600 C2 Z70                           ; set maximum instantaneous speed changes (mm/min)
M203 X30000 Y30000 C10000 Z3000                 ; set maximum speeds (mm/min)
M201 X5000 Y5000 C500 Z500                      ; set accelerations (mm/s^2) was: 2k
M204 P600 T5000
 
 
M906 X2100 Y2100 I50                            ; set motor currents (mA) and motor idle factor in per cent
M906 C500 I30                                   ; set motor currents (mA) and motor idle factor in per cent
M906 Z1800 I50                                  ; set motor currents (mA) and motor idle factor in per cent
M906 E500:500:500:500 I30                       ; set motor currents (mA) and motor idle factor in per cent (2x Flex3Drive 2x LGX)
M84 S30                                         ; Set idle timeout    

;=================== Extruder ======================
M92 E408:408:408:408                            ; set steps per mm 
M350 E16:16:16:16 I1                            ; configure microstepping 
M566 E500:500:500:500                           ; set maximum instantaneous speed changes (mm/min) ; used to be at 1200
M203 E15000:15000:15000:15000                   ; set maximum speeds (mm/min) 
M201 E3000:3000:3000:3000                       ; set accelerations (mm/s^2)
;====================================================

; Endstops
M574 X2 S1 P"xstop"                             ; configure active-high endstop for high end on X via pin xstop
M574 Y1 S1 P"ystop"                             ; configure active-high endstop for high end on Y via pin ystop
M574 Z0                                         ; No Z-Endstop (use as probe instead)

; Z-Probe
if !exists(global.hasRunInit)
	global zProbeSpeedFeed = 250
	global zProbeSpeedFeedLevel = 2100
	global zProbeSpeedTravel = 20000
	global zProbeDiveHeightLevel = 30
	global zProbeDiveHeightMesh = 3
	global zProbePin = "zstop"
	global zProbeType = 8
	global zProbeTriggerValue = 200
	global minXMesh = -146 
	global maxXMesh = 150
	global minYMesh = -150
	global maxYMesh = 150
	global meshPointSpacing = 30

M558 K0 P{global.zProbeType} C{global.zProbePin} H{global.zProbeDiveHeightMesh} F{global.zProbeSpeedFeed} T{global.zProbeSpeedTravel}  ; default Z probe with slow speed
;M558 K0 P8 C"zstop" H3 F250 T20000  ; default Z probe with slow speed
;M558 K1 P8 C"zstop" H30 F2100 T20000  ; high speed Z probe for initial leveling and homing runs
M558 K2 P8 C"duex.e5stop" H10 F100 T20000  ; set Z probe type to unfiltered switch and the dive height + speeds

G31 K0 X0 Y0 Z0 P200 
;G31 K1 X0 Y0 Z0 P200
G31 K2 X0 Y0 Z0 P200 

;G31 K0 X0 Y0 Z0 P{global.zProbeTriggerValue}                               ; set Z probe trigger value, offset and trigger height, offsets here are hardcoded in leveling macro as well

M557 X{global.minXMesh, global.maxXMesh} Y{global.minYMesh, global.maxYMesh} S{global.meshPointSpacing}   ; define mesh grid
M376 H30                                        ; Set bed correction taper

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B3950  ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 Q10                       ; create bed heater output on bedheat and map it to sensor 0
M143 H0 S121                                    ; set temperature limit for heater 0 to 121C
M307 H0 B0 R0.676 C345.1 D2.68 S1.00 V24.3      ; Bed PID Tuning
M140 H0                                         ; map heated bed to heater 0

M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8  ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                            ; create nozzle heater output on e0heat and map it to sensor 1
M143 H1 S301                                    ; set temperature limit for heater 1 to 301C

M308 S2 P"e1temp" Y"thermistor" T100000 B4725 C7.06e-8  ; configure sensor 2 as thermistor on pin e1temp
M950 H2 C"e1heat" T2                            ; create nozzle heater output on e1heat and map it to sensor 2
M143 H2 S301                                    ; set temperature limit for heater 2 to 301C

M308 S3 P"duex.e2temp" Y"thermistor" T100000 B4725 C7.06e-8  ; configure sensor 3 as thermistor on pin e2temp
M950 H3 C"duex.e2heat" T3                            ; create nozzle heater output on e2heat and map it to sensor 3
M143 H3 S301                                    ; set temperature limit for heater 3 to 301C

M308 S4 P"duex.e3temp" Y"thermistor" T100000 B4725 C7.06e-8  ; configure sensor 2 as thermistor on pin e3temp
M950 H4 C"duex.e3heat" T4                            ; create nozzle heater output on e3heat and map it to sensor 2
M143 H4 S301                                    ; set temperature limit for heater 2 to 301C


M302 S190 R190                                  ;Cold extrusion settings

M307 H1 R4.637 K0.673:0.218 D2.31 E1.35 S1.00 B0 V24.2 ; PID Tuning T0
M307 H2 R4.174 K0.555:0.276 D1.96 E1.35 S1.00 B0 V24.2 ; PID Tuning T1
M307 H3 R4.301 K0.536:0.105 D1.89 E1.35 S1.00 B0 V24.2 ; PID Tuning T2
M307 H4 R3.780 K0.576:0.060 D1.57 E1.35 S1.00 B0 V24.2 ; PID Tuning T3

; Fans
M950 F0 C"fan0"                                 ; Hotend Fan Tool 0
M106 P0 S255 L255 H1 T50 C"T0 Hotend"           ; Hotend Fan Tool 0
M950 F1 C"duex.fan3" Q50                        ; Layer Fan Tool 0
M106 P1 S0 H-1 C"T0"                            ; Layer Fan Tool 0

M950 F2 C"fan2"                                 ; Hotend Fan Tool 1
M106 P2 S255 L255 H2 T50 C"T1 Hotend"           ; Hotend Fan Tool 1
M950 F3 C"duex.fan4" Q50                        ; Layer Fan Tool 1
M106 P3 S0 H-1 C"T1"                            ; Layer Fan Tool 1

M950 F4 C"duex.fan5"                            ; Hotend Fan Tool 2
M106 P4 S255 L255 H3 T50 C"T2 Hotend"           ; Hotend Fan Tool 2
M950 F5 C"duex.fan6" Q50                        ; Layer Fan Tool 2
M106 P5 S0 H-1 C"T2"                            ; Layer Fan Tool 2

M950 F6 C"duex.fan7"                            ; Hotend Fan Tool 3
M106 P6 S255 L255 H4 T50 C"T3 Hotend"           ; Hotend Fan Tool 3
M950 F7 C"duex.fan8" Q50                        ; Layer Fan Tool 3
M106 P7 S0 H-1 C"T3"                            ; Layer Fan Tool 3

;Static layer fan
M950 F8 C"duex.e4heat" Q65535                   ; static layer fan
M106 P8 S0 H-1 I1 L0.2 C"RSCS"

; Tools
M563 P0 D0 H1 F1                                ; define tool 0
G10 P0 R0 S0                                    ; set initial tool 0 active and standby temperatures to 0C

M563 P1 D1 H2 F3                                ; define tool 1
G10 P1 R0 S0                                    ; set initial tool 1 active and standby temperatures to 0C

M563 P2 D2 H3 F5                                ; define tool 2
G10 P2 R0 S0                                    ; set initial tool 2 active and standby temperatures to 0C

M563 P3 D3 H4 F7                                ; define tool 3
G10 P3 R0 S0                                    ; set initial tool 3 active and standby temperatures to 0C

M563 P4 S"Pen"                                  ; define tool 4 (Pen)

;Dock present switches
M950 J0 C"e0stop"                               ; Tool 0 Dock switch
M950 J1 C"e1stop"                               ; Tool 1 Dock switch
M950 J2 C"duex.e2stop"                          ; Tool 2 Dock switch
M950 J3 C"duex.e3stop"                          ; Tool 3 Dock switch

;additional tool related switches
;M950 J4 C"duex.e4stop"                          ;potential toolhead tool present switch
;M950 J5 C"duex.e5stop"                          ;Z Offset Calibration switch

M950 S0 C"duex.pwm4"                            ;PebbleWiper Servo
M950 P1 C"duex.pwm5"                            ;Light switch PWM

;Accelerometer
M955 P0 C"spi.cs3+spi.cs4"

;M593 P"zvd" F60 ; Inputshaping

; Miscellaneous
M98 P"/macros/Misc/Lights/On"
M98 P"/sys/config-tools.g"

if !exists(global.hasRunInit)
	global pebbleFeedSpeedDefault = 400
	global pebbleFeedSpeed = global.pebbleFeedSpeedDefault	
	global deactivateToolAfterFilamentChange = false
	global hasRunInit = true

macros/Misc/Lights/On

M42 P1 S230

config-tools.g

if !exists(global.hasRunInit)
	global tool0NozzleSize = "0.0"
	global tool1NozzleSize = "0.0"
	global tool2NozzleSize = "0.0"
	global tool3NozzleSize = "0.0"
	
	global tool0NozzleMaterial = ""
	global tool1NozzleMaterial = ""
	global tool2NozzleMaterial = ""
	global tool3NozzleMaterial = ""

M98 P"/sys/config-tools-size.g"
M98 P"/sys/config-tools-material.g"


;Z-Offset: 	If nozzle is too close to bed _reduce_ offset (negative number becomes more negative)
;		If nozzle is too far away, _increase_ offset (negative number becomes less negative)
;Tool offsets
G10 P0 X-8.400 Y39.180 Z-4.100
G10 P1 X-8.340 Y39.260 Z-4.080
G10 P2 X-7.880 Y38.880 Z-4.310
G10 P3 X-7.810 Y39.040 Z-4.576

G10 P4 X0 Y46.5 Z-20.000                        ; set tool 4 axis offsets

config-tools-size.g
(This file is auto generated from my nozzle size selection UI in BtnCmd)

set global.tool0NozzleSize = "0.4"
set global.tool1NozzleSize = "0.4"
set global.tool2NozzleSize = "0.4"
set global.tool3NozzleSize = "0.4"

config-tools-materials.g
(This file is auto generated from my nozzle material selection UI in BtnCmd)

set global.tool0NozzleMaterial = "brass"
set global.tool1NozzleMaterial = "brass"
set global.tool2NozzleMaterial = "brass"
set global.tool3NozzleMaterial = "nozzlex"

dc42

@phaedrux said in Firmware 3.4b7 - firmware retraction bug:

@Diamondback No it shouldn't damage anything. I think what happens is that the back emf equals the input voltage and the driver basically detects that as a possible disconnect.

That's correct.

dc42

@diamondback are you using mesh bed compensation with taper when this issue occurs?

Diamondback

@dc42 said in Firmware 3.4b7 - firmware retraction bug:

@diamondback are you using mesh bed compensation with taper when this issue occurs?

I am indeed using a tapered mesh bed compensation, however, that only gets activated prior to starting a job. I don't think it gets deactivated afterwards though, so it might very well be active sometimes when this happens.
Maybe that explains the seemingly random nature, doing filament changes after power-up vs after a print job...
If you suspect that the mesh has something to do with it, is there a specific gcode I should try to put in my post print macro that deactivates the mesh again?
Or would changing something abuot the taper help?
I can't really turn off the mesh for actual printing I'm afraid.

dc42

@diamondback thanks. One of our collaborators has tracked down a cause of extruder-only moves happening too fast, but he can only make it occur when bed compensation taper is in use. I am working on a fix to include in 3.4.2. Meanwhile can you try disabling bed compensation taper, to see if the problem still occurs?

Diamondback

@dc42 said in Firmware 3.4b7 - firmware retraction bug:

@diamondback thanks. One of our collaborators has tracked down a cause of extruder-only moves happening too fast, but he can only make it occur when bed compensation taper is in use. I am working on a fix to include in 3.4.2. Meanwhile can you try disabling bed compensation taper, to see if the problem still occurs?

Ok, will disable it and see what happens

dc42

@diamondback one more question: does the tool concerned have a nonzero Z offset?

Diamondback

@dc42 said in Firmware 3.4b7 - firmware retraction bug:

@diamondback one more question: does the tool concerned have a nonzero Z offset?

It's a toolchanger where all 4 tools have non-zero offsets in all axis. (the toolhead/coupling/toolplate system is the one from E3D)

dc42

@diamondback @natthapol-v @danzaywer I have put new 3.4.2rc2+ firmware builds to fix this at https://www.dropbox.com/sh/7tf55ax00ky1pyx/AAA_eVJE20oYUON_gjKhCHsja?dl=0. I have tested the fix on the Duet 3 MB6HC build.

I was only able to reproduce this issue after when using tapered mesh bed compensation. Thanks for your patience.

Diamondback

@dc42 said in Firmware 3.4b7 - firmware retraction bug:

@diamondback @natthapol-v @danzaywer I have put new 3.4.2rc2+ firmware builds to fix this at https://www.dropbox.com/sh/7tf55ax00ky1pyx/AAA_eVJE20oYUON_gjKhCHsja?dl=0. I have tested the fix on the Duet 3 MB6HC build.

I was only able to reproduce this issue after when using tapered mesh bed compensation. Thanks for your patience.

Awesome, so with that updated firmware, using a taper shouldn't be an issue anymore?

dc42

@diamondback said in Firmware 3.4b7 - firmware retraction bug:

Awesome, so with that updated firmware, using a taper shouldn't be an issue anymore?

Correct.

Diamondback

So far, no issues. But haven't printed/changed filaments a lot yet