BLTouch will not deploy with M401

[Inno 3D]

Hello,

I have a Problem with my BLTouch. It will not deploy!
I have checked the wiring. It is definitely connected right.

I have not a config-override.g file inside the system. I have also updatet the firmware to the latest release 3.3.

With the M401 Code, the BLTouch will not deploy. Do you have any Idea, why?

Thanks for your help!

Config.g

; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.5 on Fri Oct 29 2021 19:26:34 GMT+0200 (Mitteleuropäische Sommerzeit)
 
; General preferences
M575 P1 S1 B57600                                  ; enable support for PanelDue
G90                                                ; send absolute coordinates...
M83                                                ; ...but relative extruder moves
M550 P"Printer"                                    ; set printer name
 
; Network
M551 P"*****"                                      ; set password
M552 S1                                            ; enable network
M586 P0 S1                                         ; enable HTTP
M586 P1 S0                                         ; disable FTP
M586 P2 S0                                         ; disable Telnet
 
; Drives
M569 P7 R0 S0 T3.33:3.33:5:0                       ; physical drive 0 goes forwards
M569 P8 R0 S0 T3.33:3.33:5:0                       ; physical drive 1 goes forwards
M569 P2 S0                                         ; physical drive 2 goes forwards
M569 P3 S1                                         ; physical drive 3 goes forwards
M584 X8 Y7 Z2 E3                                   ; set drive mapping
M350 X16 Y16 Z64 I0                                ; configure microstepping without interpolation
M350 E16 I1                                        ; configure microstepping with interpolation
M92 X100.00 Y200.00 Z1280.00 E418.50               ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00                ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00            ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00                ; set accelerations (mm/s^2)
M906 X1400 Y1400 Z1400 E800 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 X610 Y610 Z600 S0                             ; set axis maxima
 
; Endstops
M574 X1 S1 P"!xstop"                                ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop
M574 Y2 S1 P"!ystop"                                ; configure switch-type (e.g. microswitch) endstop for high end on Y via pin ystop
M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z
 
; Z-Probe
M950 S0 C"exp.heater6"                             ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F120 T6000                ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y0 Z2.5                                ; set Z probe trigger value, offset and trigger height
M557 X15:595 Y15:595 S20                           ; 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
M143 H1 S280                                       ; set temperature limit for heater 1 to 280C
 
; 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
 
; 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
M911 S22 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

M115

FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.3 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2021-06-15 21:45:03

M122

=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3 (2021-06-15 21:44:54) running on Duet WiFi 1.02 or later
Board ID: 0JD0M-9P6M2-NW4SN-6J9DG-3SJ6N-TAU7K
Used output buffers: 3 of 24 (11 max)
=== RTOS ===
Static ram: 23876
Dynamic ram: 74972 of which 0 recycled
Never used RAM 15568, free system stack 184 words
Tasks: NETWORK(ready,10.5%,252) HEAT(delaying,0.0%,330) Move(notifyWait,0.1%,364) MAIN(running,85.4%,443) IDLE(ready,4.1%,29), total 100.0%
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:00:24 ago, cause: power up
Last software reset at 2021-10-30 15:37, reason: User, GCodes spinning, available RAM 15568, slot 2
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
Step timer max interval 0
MCU temperature: min 30.9, current 32.6, max 32.8
Supply voltage: min 24.1, current 24.3, max 24.5, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Driver 0: position 0, standstill, SG min/max not available
Driver 1: position 0, standstill, SG min/max not available
Driver 2: position 0, standstill, SG min/max not available
Driver 3: position 0, standstill, SG min/max not available
Driver 4: position 0, standstill, SG min/max not available
Driver 5: position 0
Driver 6: position 0
Driver 7: position 0
Driver 8: position 0
Driver 9: position 0
Driver 10: position 0
Driver 11: position 0
Date/time: 2021-10-30 15:58:50
Cache data hit count 897316776
Slowest loop: 6.52ms; fastest: 0.16ms
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 4.1ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== 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
LCD 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: 16.07ms; fastest: 0.00ms
Responder states: HTTP(2) 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 e0:98:06:a4:5f:af
WiFi Vcc 3.34, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 24368
WiFi IP address 192.168.178.116
WiFi signal strength -50dBm, mode none, reconnections 0, sleep mode modem
Clock register ffffffff
Socket states: 0 0 0 0 0 0 0 0

deployprobe.g

; deployprobe.g
; called to deploy a physical Z probe
;
; generated by RepRapFirmware Configuration Tool v3.3.5 on Fri Oct 29 2021 19:26:34 GMT+0200 (Mitteleuropäische Sommerzeit)
M280 P0 S10 ; deploy BLTouch

retractprobe.g

; retractprobe.g
; called to retract a physical Z probe
;
; generated by RepRapFirmware Configuration Tool v3.3.5 on Fri Oct 29 2021 19:26:34 GMT+0200 (Mitteleuropäische Sommerzeit)
M280 P0 S90 ; retract BLTouch

[Inno 3D]

@t3p3tony yes, I saw the solution at the other thread.

Many Thanks @T3P3Tony and @Gixxerfast !!!

This solved my Problem!

[T3P3Tony]

@inno-3d

Your configuration looks correct. Does the BL touch carry out its self test when powered on?

I know you have checked the wiring but please share a photograph.

[Inno 3D]

@t3p3tony yes, the bltouch does its self test when powered on.
![20211030_171132.jpg](/assets/uploads/files/1635606877270-

[Inno 3D]

[T3P3Tony]

@inno-3d that looks correct as well.

What happens when you send

M280 P0 S10

Directly?

[Inno 3D]

@t3p3tony nothing happend!

Do you have another idea?

Many Thanks for your help!

[JoergS5]

@inno-3d said in BLTouch will not deploy with M401:

M557 X15:595 Y15:595 S20

one thing to mention is that your setting are ((595-15)/20+1)*((595-15)/20+1)= 30 * 30 points = 900 points, which are more than the 441 allowed.

And the G31 P500 X0 Y0 Z2.5 the XY offsets are probably incorrect (unless the BLTouch is at the nozzle position).

[T3P3Tony]

@inno-3d that port on the expansion breakout board is at 5V signalling level so should be fine with even older BL touches. Can you try the other PWM port on the expansion break out board (heater 6)

[Inno 3D]

@joergs5 Yes this is right. I haven not changed the settings yet, becuase first I would like to home the printer.

[Inno 3D]

@t3p3tony I have tested it with the other port, but there was the same result.

[JoergS5]

This post is deleted!

[JoergS5]

@inno-3d the core at the top of the BLTouch (allen key rotatable) needs correct position, is the pin movable?

https://cdn-3d.niceshops.com/upload/file/BLTouch_Manual.pdf page 3 image at bottom.

[Inno 3D]

@joergs5 The BLTouch should work fine. At the start, the BLTouch does it's self test.

The BLTouch worked at another borad fine. So i think, that is not the problem.

[JoergS5]

@inno-3d I have no more ideas, only rechecking wiring, and using only the mainboard pins.

[Inno 3D]

@joergs5 Ok, thanks for your help!

[Alex.cr]

@inno-3d

I’ve had a similar issue where the BLtouch would not deploy even though everything was set up correctly. My issue turned out to be the stepper motor cables creating noise on the servo wire and interfering with communication to the BLtouch.

Have you tried sending M401 with the stepper motors disabled vs with them powered on?

[T3P3Tony]

@inno-3d I see you started another thread, I had not noticed that the port should be inverted with the EBOB, as @Gixxerfast suggested on the other thread, try adding a ! to invert the pin definition:

M950 S0 C"!exp.heater6"

[Inno 3D]

@t3p3tony yes, I saw the solution at the other thread.

Many Thanks @T3P3Tony and @Gixxerfast !!!

This solved my Problem!