i must to declare my Z endstop (ir sensor) in the M574 command in config.g ?
yet i don't have microswitch, it's not clear

ok thanks DC42

i am beginner in printer 3D
i have a IR sensor DC42
About 4 seconds after power is applied, i have the 4 flash
the Z probe does not work in the duet web control: it don't stop for the Home Z
Thanks for your help

; Configuration file for Duet WiFi (firmware version 1.17)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Sat Apr 22 2017 19:59:56 GMT+0200

; General preferences
M111 S0 ; Debugging off
G21 ; Work in millimetres
G90 ; Send absolute coordinates…
M83 ; ...but relative extruder moves
M555 P1 ; Set firmware compatibility to look like RepRapFirmare

M667 S1 ; Select CoreXY mode
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X300 Y290 Z300 S0 ; Set axis maxima

; Endstops
M574 Z0 S0 ; Define active low and unused microswitches
M574 X2 Y2 S1 ; Define active high microswitches
M558 P1 X0 Y0 Z1 H5 F120 T6000 ; Set Z probe type to unmodulated, the axes for which it is used and the probe + travel speeds
G31 P600 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
M557 X15:285 Y15:285 S20 ; Define mesh grid

; Drives
M569 P0 S1 ; Drive 0 goes backwards
M569 P1 S0 ; Drive 1 goes backwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I0 ; Configure microstepping without interpolation
M92 X400 Y400 Z6400 E1674 ; Set steps per mm
M566 X900 Y900 Z15 E120 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z200 E1200 ; Set maximum speeds (mm/min)
M201 X500 Y500 Z30 E100 ; Set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Heaters
M143 S260 ; Set maximum heater temperature to 260C
M140 H-1 ; Disable heated bed
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1

; Tools
M563 P0 D0 H1 ; 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

; Network
M550 Pmaxprinter ; Set machine name
M552 P192.168.0.109 S1 ; Enable network and set IP address
M553 P255.255.255.0 ; Set netmask
M554 P192.168.0.??? ; Set gateway

; Fans
M106 P0 S1 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Custom settings are not configured

; Miscellaneous
T0 ; Select first tool

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool on Sat Apr 22 2017 19:59:56 GMT+0200

; Lift Z relatively to current position
G91
G1 Z5 F6000

; Back to absolute positioning
G90

; Go to first bed probe point and home the Z axis
G1 X150 Y150 F6000
G30

; Uncomment the following lines to lift Z after probing
;G91
;G1 Z5 F100
;G90

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool on Sat Apr 22 2017 19:59:56 GMT+0200

; Relative positioning
G91

; Lift Z
G1 Z5 F6000

; Course home X or Y
G1 X305 Y305 F1800 S1
; Course home X
G1 X305
; Course home Y
G1 Y305

: Move away from the endstops
G1 X-5 Y-5 F6000

; Fine home X
G1 X305 F360 S1
; Fine home Y
G1 Y305 S1

; Absolute positioning
G90

; Go to first bed probe point and home Z
G1 X150 Y150 F6000
G30

; Uncomment the following line to lift the nozzle after probing
;G1 Z5 F100

ok thanks dc42
the forum is a great tool for everyone

What are really the characters accepted by duetwifi? It's not very clear on the wiki
What is the maximum length of the password?
thanks

Eureka
it works
great thanks Mike and dc42

ok thanks Mike
i try with a new pasword

no, there is one circumflex accent in my password
but i already tried with one password more simple and no success
I do not understand why the duetwifi does not connect to my wifi

Thanks dc42
I tried several times my password and always nothing
I tried a less complicated password with protection WPA and still no success
Protection type wifi: WPA2-PSK/TKIP protocol EAPOL V2
canal 11, bandwidth 20 MHz , 802.11n
the IP adress duetwifi is 192.168.1.100 when is connected, my DHCP range 192.168.0.100 to 192.168.0.140

i am blocked to point 11: not connected to the Duet WiFi web interface, no IP adress

M552 S0
SENDING:M552 S0
WiFi server stopped
M552 S1
SENDING:M552 S1
WiFi server starting up
DuetWiFiServer version 1.03 (ch fork)
Flash size 4194304, free RAM 32608 bytes, WiFi Vcc 3.07V, host name: duetwifi, reset reason: Turned on by main processor
WiFi is running as an access point with name DuetWiFi

help me
i am french, and i am a wifi from a Box Freebox
Thanks