thank you I will test and come back to you

m122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.1 running on Duet WiFi 1.02 or later
Board ID: 08DJM-9178L-L2MSD-6JKD2-3S86L-K9DGN
Used output buffers: 3 of 24 (11 max)
=== RTOS ===
Static ram: 27980
Dynamic ram: 93868 of which 52 recycled
Exception stack ram used: 264
Never used ram: 8908
Tasks: NETWORK(ready,404) HEAT(blocked,1224) MAIN(running,1880) IDLE(ready,80)
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:01:20 ago, cause: power up
Last software reset at 2020-08-18 16:50, reason: User, spinning module GCodes, available RAM 8620 bytes (slot 3)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task MAIN
Error status: 0
MCU temperature: min 32.1, current 35.6, max 35.9
Supply voltage: min 24.1, current 24.1, max 24.3, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
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: 2020-08-19 17:14:42
Cache data hit count 132751524
Slowest loop: 4.76ms; fastest: 0.13ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 2.6ms, write time 0.0ms, max retries 0
=== Move ===
Hiccups: 0(0), FreeDm: 169, MinFreeDm: 169, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
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) 0
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
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 112.81ms; fastest: 0.00ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8

• WiFi -
  Network state is active
  WiFi module is connected to access point
  Failed messages: pending 0, notready 0, noresp 0
  WiFi firmware version 1.23
  WiFi MAC address 2c:f4:32:3e:e9:76
  WiFi Vcc 3.36, reset reason Unknown
  WiFi flash size 4194304, free heap 22672
  WiFi IP address 192.168.1.68
  WiFi signal strength -54dBm, reconnections 0, sleep mode modem
  Socket states: 0 4 0 0 0 0 0 0

here is my M122

I use the web interface I do not use the SD card.

CFFFP_occhiale_ale_5.gcode

Thank you for your answer, I have the linked file.

I did include the T0 in my gcode file but it ended up losing the tools.
I have a smaller file but it works like no other.

Good morning all

I have a problem my config works well but I randomly lose the extruder.
card: Duet 2 wifi
screen: 5 inches with Paneldue
printer: Core xy home made
I indicated several times in config.g T0 but it still ended up not being lost and in a completely random way:
I was able to print 3 hours and 2 minutes from the end of the print loss of T0
"Error: Attempting to extrude with no tool selected."
please help me i love the functions of the duet !
My configuration :

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Jul 19 2020 13:14:37 GMT+0200 (heure d’été d’Europe centrale)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"MyXCore 300 Duet" ; set printer name
M669 K1 ; select CoreXY mode

; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet

; Drives
M569 P0 S1 ; physical drive 0 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X32 Y32 Z32 E16 I1 ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z800.00 E111.85 ; set steps per mm
M566 X900.00 Y900.00 Z20.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z200.00 E1200.00 ; set maximum speeds (mm/min)
M201 X800.00 Y800.00 Z25.00 E250.00 ; set accelerations (mm/s^2)
M906 X1100 Y1200 Z900 E900 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 X300 Y300 Z300 S0 ; set axis maxima

; Endstops
M574 X1 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

; Z-Probe
M558 P1 C"!zprobe.in" H5 F200 T6000 ; set Z probe type to unmodulated and the dive height + speeds
M558 H5 ;*** Remove this line after delta calibration has been done and new delta parameters have been saved
G31 P500 X32 Y-70 Z3.30 ; set Z probe trigger value, offset and trigger height
M557 X10:270 Y30:250 S40 ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; 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
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
;

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0 ; 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

; Miscellaneous
M575 P1 S1 B57600 ; enable support for PanelDue

; Fin
T0 ; choix outil
M501 ; lecture des paramètres enregistrés