@gloomyandy @infiniteloop @jay_s_uk
I believe you were right and the problem was indeed a wiring problem.
With the printer on, I just jiggled the connector on the duet and the readings went off the charts. I believe it's just bad crimps and I will re-do these and it should fix the problem. I checked the cable themselves and they look fine.

However, this still does not explain why the heater fault was not triggered at 8:46 with the huge temperature drop.

@infiniteloop Yes I made a typo, I typed "M570 H4" (which is my bed heater).
Since I haven't changed this in my config.g, it's the default value for all the heaters.

And this is my config.g :

; Configuration file for Duet WiFi / Ethernet running RRF3 on E3D Tool Changer
; executed by the firmware on start-up

;########################
;  General preferences
;########################

M111 S0 				; Debugging off
G21 					; Work in millimetres
G90 					; Send absolute coordinates...
M83 					; ...but relative extruder moves
M555 P2 				; Set firmware compatibility to look like Marlin
M667 S1 				; Select CoreXY mode	

;########################
;        Network
;########################

M550 P"ToolChanger" 	; Set machine name
"part of config.g deleted for obvious reasons"

;########################
;         Drive
;########################

;Drive directions
M569 P0 S0 											; Drive 0 (X)
M569 P1 S0 											; Drive 1 (Y)
M569 P2 S1 											; Drive 2 (Z)
M569 P3 S0 											; Drive 3 (C)
M569 P4 S0 											; Drive 4 (E0)
M569 P5 S0 											; Drive 5 (E3)
M569 P6 S0											; Drive 6 (E2)
M569 P7 S0 											; Drive 7 (E1)
M569 P8 S0 											; Drive 8 UNUSED 
M569 P9 S0 											; Drive 9 UNUSED 

;Drive mapping and control
M584 X0 Y1 Z2 C3 E4:7:6:5 							; Stepper motor connection points, see C:\Users\YN14386\Documents\Documentation\Toolchanger for wiring diagram
M208 X-35:328.5 Y-49:243 Z0:300 C-45:360	 		; Set axis maxima & minima
M92 X100 Y100 Z800 C91.022 E392:392:392:392			; Set steps per mm assuming x16 microstepping 
M350 X16 Y16 Z16 I1									; Configure microstepping with    interpolation for the extruders
M350 E16:16:16:16 I1 								; Configure microstepping with    interpolation for the XYZ movements
M350 C16 I10										; Configure microstepping without interpolation for the coupler

;Drive speeds and acceleration
M203 X35000 Y35000 Z1200 C5000 E5000:5000:5000:5000	; Set maximum speeds (mm/min)
M201 X2000 Y2000 Z400 C500 E2500:2500:2500:2500		; Set maximum accelerations (mm/s^2) was X6000 Y6000
M566 X400 Y400 Z8 C2 E400:400:400:400				; Set the jerk : maximum instantaneous speed changes  (mm/min)

; Motor current
M906 X1800 Y1800 Z1330 I30   						; Idle motion motors to 30%
M906 E1000:1000:1000:1000 C500 I10     				; Idle extruder and cooupler motors to 10%

;########################
;        Endstops
;########################

;X and Y axis
M574 X1 Y1 S3 					; Set X / Y endstop stall detection
M915 X Y S3 F0 H400 R1   		; Stall Detection for the X and Y Axes ;

; Coupler Axis
M574 C0 Z0  				    ; No C Z endstop, it just crashes

;Z axis
M558 P8 C"zstop" H3 F360 I0 T20000 	; Set Z probe type to switch, the axes for which it is used and the dive height + speeds
G31 P200 X0 Y0 Z0	 				; Set Z probe trigger value, offset and trigger height
M557 X10:290 Y20:180 S40 			; Define mesh grid
;M376 H15							; bed compensation taper

;########################
;         Heaters
;########################

;see C:\Users\YN14386\Documents\Documentation\Toolchanger\*** for connection points names

;Tool 0
M308 S0 P"e1temp"      Y"thermistor" A"Heater 0" T100000 B4725 C7.06e-8 ; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H0 C"e1heat" T0													; Set heater number (H) and connection point (C)
M143 H0 S285															; Set temperature limit for heater to 285C

;Tool 1
M308 S1 P"duex.e2temp" Y"thermistor" A"Heater 1" T100000 B4725 C7.06e-8 ; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H1 C"duex.e2heat" T1												; Set heater number (H) and connection point (C)
M143 H1 S285															; Set temperature limit for heater to 285C

;Tool 2
M308 S2 P"duex.e3temp" Y"thermistor" A"Heater 2" T100000 B4725 C7.06e-8 ; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H2 C"duex.e3heat" T2												; Set heater number (H) and connection point (C)
M143 H2 S285 															; Set temperature limit for heater to 285C

;Tool 3
M308 S3 P"duex.e4temp" Y"thermistor" A"Heater 3" T100000 B4725 C7.06e-8 ; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H3 C"duex.e4heat" T3												; Set heater number (H) and connection point (C)
M143 H3 S285 															; Set temperature limit for heater to 285C

;Heated bed
M308 S4 P"bedtemp" Y"thermistor" A"Bed" T100000 B4138 C0 				; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H4 C"bedheat" T4													; Set heater number (H) and connection point (C)
M143 H4 S110 															; Set temperature limit for bed heater to 110C
M140 H4																	; Bed heater is heater 4

;########################
;        Fans
;########################

;Tool 0
M950 F4 C"fan1"					; Set hotend fan number (F) and connection point (C)
M106 P4 S255 H0 T60				; Link fan to Heater (H) and turn it for temperature above 60C (T)
M950 F0 C"fan2"					; Part cooling fan connection point
M106 P0 S0						; Turn off the part cooling fan.

;Tool 1
M950 F5 C"duex.fan3"			; Set hotend fan number (F) and connection point (C)
M106 P5 S255 H1 T60 			; Link fan to Heater (H) and turn it for temperature above 60C (T)
M950 F1 C"duex.fan4"			; Part cooling fan connection point
M106 P1 S0						; Turn off the part cooling fan.

;Tool 2
M950 F6 C"duex.fan5"			; Set hotend fan number (F) and connection point (C)
M106 P6 S255 H2 T60 			; Link fan to Heater (H) and turn it for temperature above 60C (T)
M950 F2 C"duex.fan6"			; Part cooling fan connection point
M106 P2 S0 						; Turn off the part cooling fan.

;Tool 3
M950 F7 C"duex.fan7"			; Set hotend fan number (F) and connection point (C)
M106 P7 S255 H3 T60				; Link fan to Heater (H) and turn it for temperature above 60C (T)
M950 F3 C"duex.fan8"			; Part cooling fan connection point
M106 P3 S0						; Turn off the part cooling fan.

;########################
;         Tools
;########################

;Tool 0
M563 P0 S"Tool 0" D0 H0 F0 				; Define the tool : its number (P), its name (S), its extruder drive (D), its heater (H) and its part cooling fan (F)
G10 P0 X0 Y0 Z0 						; Reset tool axis offsets
G10 P0 R0 S0 							; Reset initial tool active and standby temperatures to 0C

;Tool 1
M563 P1 S"Tool 1" D1 H1 F1 				; Define the tool : its number (P), its name (S), its extruder drive (D), its heater (H) and its part cooling fan (F)
G10 P1 X0 Y0 Z0 						; Reset tool axis offsets
G10 P1 R0 S0 							; Reset initial tool active and standby temperatures to 0C

;Tool 2
M563 P2 S"Tool 2" D2 H2 F2 				; Define the tool : its number (P), its name (S), its extruder drive (D), its heater (H) and its part cooling fan (F)
G10 P2 X0 Y0 Z0 						; Reset tool axis offsets
G10 P2 R0 S0 							; Reset initial tool active and standby temperatures to 0C

;Tool 3
M563 P3 S"Tool 3" D3 H3 F3 				; Define the tool : its number (P), its name (S), its extruder drive (D), its heater (H) and its part cooling fan (F)
G10 P3 X0 Y0 Z0 						; Reset tool axis offsets
G10 P3 R0 S0 							; Reset initial tool active and standby temperatures to 0C

;########################
;       PID tune 
;########################

; run M303 T0 S230 with the tool you want to autotune (T) and the target temperature (S)
; for the bed, run M303 H4 S80 with the target temperature (S)

;Tool 0
M307 H0 R2.020 K0.305:0.329 D5.69 E1.35 S1.00 B0 V24.2  ;PID parameter for a heater (H)

;Tool 1
M307 H1 R1.887 K0.290:0.268 D6.00 E1.35 S1.00 B0 V24.3  ;PID parameter for a heater (H)

;Tool 2
M307 H2 R1.854 K0.286:0.300 D6.01 E1.35 S1.00 B0 V24.3  ;PID parameter for a heater (H)

;Tool 3
M307 H3 R1.973 K0.430:0.139 D6.19 E1.35 S1.00 B0 V24.3  ;PID parameter for a heater (H)

;Bed
M307 H4 R1.223 K0.255:0.000 D3.83 E1.35 S1.00 B0        ;PID parameter for the bed heater (H)

;########################
;     tool offsets
;########################
; !ESTIMATED! offsets for:
; V6-tool: X-9 Y39 Z-5
; Volcano-tool: X-9 Y39 Z-13.5
; Hemera-tool: X20 Y43.5 Z-6


; smaller negativ values means closer to bed 
G10 P0 X20.00 Y43.50 Z-5.26				; T0 x20 y43.5 reference
G10 P1 X19.70 Y43.70 Z-5.74				; T1 x20 y43.5
G10 P2 X19.60 Y43.55 Z-5.25				; T2 x20 y43.5
G10 P3 X19.65 Y43.50 Z-5.54				; T3 x20 y43.5


;########################
;    Pressure advance
;########################

;Default pressure advance for PLA, different values should be set in the slicer
M572 D0 S0.025 						; pressure advance T0
M572 D1 S0.025 						; pressure advance T1
M572 D2 S0.025 						; pressure advance T2
M572 D3 S0.025 						; pressure advance T3


;########################
;         Others
;########################

M593 F42.2						; cancel ringing at 42.2Hz (https://forum.e3d-online.com/threads/accelerometer-and-resonance-measurements-of-the-motion-system.3445/)


;M575 P1 S1 B57600				; Enable LCD
G29 S2							; disable mesh
T-1								; deselect tools

;M501                    ; load config-override.g, commented so it's not used : 
;do not use M500 and config-override, modifications should be made in config.g directly.

@T3P3Tony Thanks a lot ! I missed them when I read through the object model I don't know why.

For anyone reading this, I spent 4 hours searching through RS and Farnell for references.

I removed all the cable with impedance not being 120 Ohms, and searched for 22-24 Awg cables.

The one I find that suit the best this application are the following :
(If some of the specialists here could confirm these choice that would be great.)

Alpha wire 6413, 2x(2x24AWG), Impedance 120 Ohms, Outer Diameter 7.1mm, Temp -20 to 80, unshielded :
https://fr.farnell.com/alpha-wire/6413-sl005/cable-24awg-2-pair-slate-30-5m/dp/1746265?st=6413

Lapp Kabel 2170204T, 2x(2x24AWG), Impedance 100-120 Ohms, Outer Diameter 7.1mm, Temp -5 to 70, shielded (i think)
https://fr.farnell.com/lapp-kabel/2170204t/cable-profibus-par-metre/dp/3034318

And if you want way overkill, you can run two of these cable

CFBUS.LB.021, 2x20AWG, Impedance 120 Ohms, Outer Diameter 8.0mm, Temp -50 to 70, shielded
https://fr.rs-online.com/web/p/cables-de-controle/1854913

The last one is the only one that is purposely made for dragchains and to move.

I will try my luck with the first one.

@bbeardb I have also done the conversion. It works perfectly, what do you want to know ?

Hi everyone,

Just wanted to let the Duet team knows that this is also something of interest to us.

But we also are at an early stage of our work regarding this matter.

@T3P3Tony Thanks a lot ! I missed them when I read through the object model I don't know why.

Hi,

Is there a way to get the result of a gcode command inside a variable.

I'm writing a few macros and I would need to store the offsets of different tools to a variable. These are the results from G10 P0, G10 P1 and G31 that appear in the console.

I tried to find them in the object model description, but without success.
https://github.com/Duet3D/RepRapFirmware/wiki/Object-Model-Documentation

Thanks in advance for pointing me in the right direction.

@MortenMod hey man. Hit me up if you need help.

You could measure the voltage across the heater output terminal block on the tool board when the heater is running at full power, to see if it is significantly lower than VIN. If that's not it, maybe they used an over-powered cooling fan; in which case you can set the maximum fan PWM using the M106 command X parameter in config.g. Or you could set that fan output to run at 12V, if that still provides sufficient cooling.

Yes I will try that. I tried to look at the response VIN voltage from the M122 command. I see it drop to 23.7 when the heater is full blast on. But since the toolboard has to power everyting else, maybe it's a lot more at the heater.

Regarding the fan, it's not the problem. The printer has run with this heater/fan/extruder combo before the conversion to Duet and this was not an issue in the past. Of course I was seeing the temperature drop a bit when fan was turned on, but it was always capable of going back up with time.

Hey everyone,

I did a lot of testing and finally managed to make it work.
I did two 24 hours prints with no troubles.

My solution was to use these parameter in the M569 command :
T5:5:10:100
Hope this can help someone else.

I don't understand why but I have to increase the dd parameter in the M569 command crazy high...

I only have one problem now : when I turn on the part cooling fan to 100%, the temperature keeps dropping until it pauses the print. The hotend does not seem to have the juice to go back up in temperature.

I believe it's because I used 20AWG cables to power my Toolboard 1LC which does not seem to be enough for a cable nearly 3m long.

@dc42
You actually already helped me on this subject when I was having trouble to just make them move two weeks ago.
See this post for more details.
https://forum.duet3d.com/topic/30197/external-driver-not-working/8

External stepper -> 1XD Board
CLK -> D0_STEP (+)
DIR -> D0_DIR (+)
EN -> D0_EN (-)
GND - > GND (on the IO0)

@mrehorstdmd said in Closed loop stepper motors JSS57P2N Nema23:

@Shoki That looks really interesting. Are those machines being dumped onto the surplus market these days?

These are just the cheapest big size 3D printer you can buy. And they advertise it can print peek, which it obviously does not.

I watched their video on Youtube and saw they have a drive reducer on the Y axis motor. Are they doing that on all 3 axes? Can you tell me the reduction ratio(s) they use ?

There has been a lot of different version of their Creatbot D600 Pro. I have seen some with small motors and reduction, some with big motors, some with servo and some without.

The one I have is geared in the Y axis, not geared in the X axis. I don't know the ratios.
The Z axis is just a single motor with belts to drive the four leadscrews that move the bed up and down.

@jay_s_uk

I updated everything yesterday !

M122

=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.4.4 (2022-10-20 16:19:01) running on Duet 3 MB6HC v1.01 (standalone mode)
Board ID: 08DJM-956BA-NA3TN-6J9F0-3SN6L-1B82U
Used output buffers: 3 of 40 (16 max)
=== RTOS ===
Static ram: 152824
Dynamic ram: 97356 of which 0 recycled
Never used RAM 100492, free system stack 200 words
Tasks: NETWORK(ready,29.6%,176) ETHERNET(notifyWait,0.1%,463) HEAT(notifyWait,0.0%,328) Move(notifyWait,0.0%,351) CanReceiv(notifyWait,0.0%,798) CanSender(notifyWait,0.0%,335) CanClock(delaying,0.0%,340) TMC(notifyWait,8.2%,91) MAIN(running,61.7%,1081) IDLE(ready,0.3%,30), total 100.0%
Owned mutexes:
=== Platform ===
Last reset 00:00:47 ago, cause: software
Last software reset at 2022-11-04 09:54, reason: User, GCodes spinning, available RAM 96732, slot 1
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0x00000000 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
Step timer max interval 127
MCU temperature: min 30.0, current 30.3, max 30.6
Supply voltage: min 23.8, current 23.8, max 23.9, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 11.9, current 12.0, max 12.1, under voltage events: 0
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Events: 0 queued, 0 completed
Driver 0: standstill, SG min 0, mspos 8, reads 64836, writes 11 timeouts 0
Driver 1: standstill, SG min 0, mspos 8, reads 64836, writes 11 timeouts 0
Driver 2: standstill, SG min 0, mspos 8, reads 64836, writes 11 timeouts 0
Driver 3: standstill, SG min 0, mspos 8, reads 64837, writes 11 timeouts 0
Driver 4: standstill, SG min 0, mspos 8, reads 64837, writes 11 timeouts 0
Driver 5: standstill, SG min 0, mspos 8, reads 64837, writes 11 timeouts 0
Date/time: 2022-11-04 08:55:27
Slowest loop: 101.00ms; fastest: 0.05ms
=== Storage ===
Free file entries: 9
SD card 0 detected, interface speed: 25.0MBytes/sec
SD card longest read time 3.1ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 125, segments created 0, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamber heaters 2 -1 -1 -1, ordering errs 0
Heater 0 is on, I-accum = 0.2
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
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) 24
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
SBC is idle in state(s) 0
Daemon is idle in state(s) 0
Aux2 is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty
=== CAN ===
Messages queued 461, received 2088, lost 0, boc 0
Longest wait 3ms for reply type 6053, peak Tx sync delay 6, free buffers 50 (min 49), ts 236/235/0
Tx timeouts 0,0,0,0,0,0
=== Network ===
Slowest loop: 117.17ms; fastest: 0.03ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
= Ethernet =
State: active
Error counts: 0 0 0 0 0 0
Socket states: 5 2 2 2 2 0 0 0
=== Multicast handler ===
Responder is inactive, messages received 0, responses 0

M122 B40

Diagnostics for board 40:
Duet EXP1XD firmware version 3.4.4 (2022-10-14 11:45:39)
Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
All averaging filters OK
Never used RAM 5520, free system stack 88 words
Tasks: Move(notifyWait,0.0%,153) HEAT(notifyWait,0.1%,115) CanAsync(notifyWait,0.0%,64) CanRecv(notifyWait,0.0%,77) CanClock(notifyWait,0.0%,64) MAIN(running,96.5%,448) IDLE(ready,0.0%,40) AIN(delaying,3.4%,142), total 100.0%
Last reset 00:01:40 ago, cause: software
Last software reset data not available
Driver 0: pos 0, 266.7 steps/mm, steps req 0 done 0
Moves scheduled 0, completed 0, in progress 0, hiccups 0, step errors 0, maxPrep 0, maxOverdue 0, maxInc 0, mcErrs 0, gcmErrs 0
Peak sync jitter 1/5, peak Rx sync delay 203, resyncs 0/0, no step interrupt scheduled
VIN voltage: min 24.3, current 24.4, max 24.4
MCU temperature: min 17.5C, current 17.7C, max 17.9C
Last sensors broadcast 0x00000000 found 0 240 ticks ago, 0 ordering errs, loop time 0
CAN messages queued 824, send timeouts 0, received 1301, lost 0, free buffers 37, min 37, error reg 0
dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 0

M122 B41

Diagnostics for board 41:
Duet EXP1XD firmware version 3.4.4 (2022-10-14 11:45:39)
Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
All averaging filters OK
Never used RAM 5488, free system stack 88 words
Tasks: Move(notifyWait,0.0%,153) HEAT(notifyWait,0.1%,115) CanAsync(notifyWait,0.0%,64) CanRecv(notifyWait,0.0%,77) CanClock(notifyWait,0.0%,64) MAIN(running,96.5%,448) IDLE(ready,0.0%,40) AIN(delaying,3.4%,142), total 100.0%
Last reset 00:01:55 ago, cause: software
Last software reset data not available
Driver 0: pos 0, 266.7 steps/mm, steps req 0 done 0
Moves scheduled 0, completed 0, in progress 0, hiccups 0, step errors 0, maxPrep 0, maxOverdue 0, maxInc 0, mcErrs 0, gcmErrs 0
Peak sync jitter 0/4, peak Rx sync delay 201, resyncs 0/0, no step interrupt scheduled
VIN voltage: min 24.6, current 24.6, max 24.6
MCU temperature: min 25.2C, current 25.4C, max 25.4C
Last sensors broadcast 0x00000000 found 0 192 ticks ago, 0 ordering errs, loop time 0
CAN messages queued 949, send timeouts 0, received 1503, lost 0, free buffers 37, min 37, error reg 0
dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 0

M122 B42

Diagnostics for board 42:
Duet EXP1XD firmware version 3.4.4 (2022-10-14 11:45:39)
Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
All averaging filters OK
Never used RAM 5520, free system stack 88 words
Tasks: Move(notifyWait,0.0%,153) HEAT(notifyWait,0.1%,115) CanAsync(notifyWait,0.0%,64) CanRecv(notifyWait,0.0%,77) CanClock(notifyWait,0.0%,64) MAIN(running,96.5%,448) IDLE(ready,0.0%,40) AIN(delaying,3.4%,142), total 100.0%
Last reset 00:02:07 ago, cause: software
Last software reset data not available
Driver 0: pos 0, 960.0 steps/mm, steps req 0 done 0
Moves scheduled 0, completed 0, in progress 0, hiccups 0, step errors 0, maxPrep 0, maxOverdue 0, maxInc 0, mcErrs 0, gcmErrs 0
Peak sync jitter 1/5, peak Rx sync delay 201, resyncs 0/0, no step interrupt scheduled
VIN voltage: min 24.4, current 24.4, max 24.4
MCU temperature: min 19.3C, current 19.4C, max 19.7C
Last sensors broadcast 0x00000000 found 0 19 ticks ago, 0 ordering errs, loop time 0
CAN messages queued 1042, send timeouts 0, received 1653, lost 0, free buffers 37, min 37, error reg 0
dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 0

@jay_s_uk Sorry I forgot.
Here it is :

; Configuration file for Duet 3 MB 6HC (firmware version 3.3)
; executed by the firmware on start-up
 
;########################
;  General preferences
;########################

M111 S0 				; Debugging off
G21 					; Work in millimetres
G90 					; Send absolute coordinates...
M83 					; ...but relative extruder moves
M555 P2 				; Set firmware compatibility to look like Marlin
M667 S0 				; Select CoreXY mode

;########################
;        Network
;########################

M550 P"Creatbot"  			; Set machine name
M553 P***********     		; Ethernet Settings - Mask
M554 P***********     		; Ethernet Settings - Passerelle
M552 P***********      		; Ethernet Settings - Adresse
M552 S1					; Enable Networking
M586 P0 S1 				; Enable HTTP
M586 P1 S0 				; Disable FTP
M586 P2 S0 				; Disable Telnet

; Wait a moment for the CAN expansion boards to start
G4 S2

;########################
;         Drive
;########################

;Drive directions
M569 P20.0    S0				; Drive on Toolboard (E0) 
M569 P40.0 R1 S0				; Drive on 1XD (X) 
M569 P41.0 R1 S1				; Drive on 1XD (Y) 
M569 P42.0 R1 S0				; Drive on 1XD (Z) 

M569 P40.0 T2.5:2.5:2.5:2.5
M569 P41.0 T2.5:2.5:2.5:2.5
M569 P42.0 T2.5:2.5:2.5:2.5
;here I tried a lot of values, see my previous post

;Drive mapping and control					
M584 X40.0 Y41.0 Z42.0 E20.0		; Stepper motor connection points
;M350 X16 Y16 Z16 I0			; Configure microstepping without interpolation for XYZ- needed or not ?
M350 E16 I1				; Configure microstepping with interpolation for the extruder
;M92 X5000 Y5000 Z5000 E392        ; Set steps per mm assuming x16 microstepping 
M92 X266.67 Y266.67 Z960.00 E392        ; Set steps per mm assuming x16 microstepping 

;Drive speeds and acceleration
M203 X18000 Y18000 Z600 E5000           ; Set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z100 E2500       ; Set maximum accelerations (mm/s^2)
M566 X300 Y300 Z10 E400                 ; Set the jerk : maximum instantaneous speed changes  (mm/min)

; Motor current
M906 X1000 Y1000 Z1000 I30 ;
M906 E1000 I30        ; Set motor currents (mA) and motor idle factor to 30% - needed or not ?
M84 S30                                 ; Set idle timeout

;########################
;        Endstops
;########################

; Axis Limits
M208 X-65 Y-77 Z0 S1            ; Set axis minima - need adjustments
M208 X500 Y500 Z500 S0			; Set axis maxima

; Endstops
M574 X1 S1 P"!20.io1.in"		; Set endstop position (X), type (P) and connection point (P), the ! is to invert- on toolboard 
M574 Y1 S1 P"!41.io1.in"		; Set endstop position (Y), type (P) and connection point (P), the ! is to invert - on 1XD for Y

; Z-Probe
M950 S0 C"20.io0.out"			; Create servo pin 0 for BLTouch at connection point (C)
M558 P9 C"20.io0.in" H5 F300 T6000	; Set Z probe type to bltouch (P), the connection point (C), 
					; the dive height (H), the dive speeds (F), travel speed between probe points (T)
G31 P500 X15 Y29 Z1			; Set Z probe trigger value (P), offset (XY) and trigger height (Z)
M557 X20:390 Y20:390 S74		; define mesh grid

;########################
;         Heaters
;########################

;Heated bed
M308 S0 P"temp0" Y"thermistor" A"Bed" T100000 B3950       ; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H0 C"out1" T0                                        ; Set heater number (H), connection point (C) and map it to a sensor (T)
M143 H0 S105                                              ; Set temperature limit 
M140 H0                                                   ; Set this heater as bed heater

;Tool
M308 S1 P"20.temp0" Y"thermistor" T100000 B4725 C7.06e-8 ; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H1 C"20.out0" T1                                    ; Set heater number (H), connection point (C) and map it to a sensor (T)
M143 H1 S285                                              ; Set temperature limit

;Heated chamber
M308 S2 P"temp1" Y"thermistor" A"Chamber" T100000 B3950              ; Set thermistor number (S), connection point (P), name (A) and parameters (YTBC)
M950 H2 C"out2" T2                                        ; Set heater number (H), connection point (C) and map it to a sensor (T)
M143 H2 S80                                               ; Set temperature limit
M141 H2                                                   ; Set this heater as chamber heater

;########################
;        Fans
;########################

; Fans
M950 F0 C"20.out2" Q500                                   ; create fan 0 on pin 20.out2 and set its frequency
M106 P0 S0 H1 T50                                         ; set fan 0 value. Thermostatic control is turned on
M950 F1 C"20.out1" Q500                                   ; create fan 1 on pin 20.out1 and set its frequency
M106 P1 S0 H-1                                            ; set fan 1 value. Thermostatic control is turned off
M950 F2 C"out4" Q500                                      ; create fan 2 on pin out4 and set its frequency
M106 P2 S0 H-1                                            ; set fan 2 value. Thermostatic control is turned off

;########################
;         Tools
;########################
; Tools
M563 P0 S"Tool" D0 H1 F1                                ; 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

;########################
;       PID tune 
;########################

; Bed PID
M307 H0 R0.924 K1.185:0.000 D1.57 E1.35 S1.00 B0

; Tool PID
M307 H1 R1.858 K0.379:0.159 D7.08 E1.35 S1.00 B0 V23.7




;########################
;    Pressure advance
;########################

;########################
;         Others
;########################

;#######################################################
G31 Z2.00			; Set Z probe trigger trigger height (Z)
;#######################################################

T0                                                        ; select first tool
M575 P1 S1 B57600

Hi everyone,

I'm making this post because I have a problem with closed loop stepper motors missing steps.
More specifically, with the JSS57P2N Nema23 stepper motors, for which you can find the manual here (with no useful information)
As you will see, I have made extensiv research on the forum but without finding a solution.

I will try to be organised but not brief.

What is the point of using these stepper ?

None. They are already installed on the Creatbot D600 Pro. Making them work is the easiest and cheapest way to convert the machine to a Duet.
For that, all you need is a 1XD board for each axis.

I have found at least 10 peoples which have converted this machine to Duet so this is clearly a subject of interest for a lot of people.

1 2 3 4 5 6 7 8 9 10

Number 1 is having the exact same problem as myself. He solved it by just replacing the motors, which is not really a solution...
He did look at the STEP and DIR signal with an oscilloscope to see if something was wrong.

What is not working ?

The motors are missing steps. Not a lot so it can't print or we get huge layer shifts. But just a bit at every layer so that every print you try come out skewed like the tower of pisa.
Sometimes in one direction, sometimes in another, it depends on the print.

Is it possible to make it work ?

YES ! That is the most frustrating thing. They are on the original setup with the crappy 8-bit board and the marlin firmware. And it works, no layer shifts, but you get 1000 other problems. They are driven by these dummy step stick that send the DIR/STEP/EN signal to the stepper driver on the motor.

What have I tried ?
I applied the protocol RTFMN (google it) and found this page on connecting external stepper and servo motor drivers..
Where I can read about the M569 command and the timing parameters :
"The value required for cc is the direction-change-to-step-pulse setup time specified in the datasheet. If you use a value that is too low for your driver then you may see small layer shifts, where the whole layer shifts by one microstep on each direction change. You may need to use a value higher than specified in the datasheet if the cable capacitance is high. Using a value that is higher than needed is less critical, because RRF will only need to insert delays when the direction changes."

Great this looks like the solution. But It does not work.

I tried changing the parameters to a lot of different values :
T2.7:2.7:2.7:2.7
T5:5:10:0
T20:20:20:20
But no success...

What am i doing wrong ?
This is where I need help.

I don't believe an old cheapo 8-bit board is capable of driving these motor correctly and not the mighty Duet eco-system.

I will allow myself to tag a few people that already worked with these motors or did the conversion to the D600 Pro.
@Toastinator @alankilian @taylo708 @Thunderrunna

Thanks in advance to anyone that could help.