@dc42 Apologies about the delay.

I received the 1HCL warranty replacement and installed it as before, but the connection problem persists; the MB6HC still doesn't recognize the expansion board, the STATUS LED on the 1HCL doesn't flash (the V_FUSED LED does light up solidly and the voltage indicators flash rapidly)

I attempted to diagnose the issue by seeing if there were any obvious problems such as powering the Mainboard and 1HCL with separate power supplies, checking the continuity of the RJ11 cable and voltage (there is continuity and voltage), cutting open the the RJ11 cable to see if their wires were twisted (they weren't), reflashing the Mainboard's firmware.

Nothing has worked and now I'm stumped.

@dc42 the STATUS LED on the 1HCL doesn't flash with only power and CAN connected either.

@Phaedrux
Firmware version is 3.4.6

M122:

M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.4.6 (2023-07-21 14:11:38) running on Duet 3 MB6HC v1.02 or later (standalone mode)
Board ID: 08DJM-9P63L-DJ3T8-6JKD4-3SN6J-9U7MA
Used output buffers: 13 of 40 (15 max)
=== RTOS ===
Static ram: 153252
Dynamic ram: 97320 of which 0 recycled
Never used RAM 100028, free system stack 154 words
Tasks: NETWORK(notifyWait,28.9%,227) ETHERNET(notifyWait,0.0%,658) HEAT(notifyWait,0.0%,371) Move(notifyWait,0.0%,214) CanReceiv(notifyWait,0.0%,943) CanSender(notifyWait,0.0%,335) CanClock(delaying,0.0%,341) TMC(notifyWait,7.7%,92) MAIN(running,62.7%,1101) IDLE(ready,0.6%,30), total 100.0%
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:21:15 ago, cause: software
Last software reset at 2023-11-07 15:04, reason: User, GCodes spinning, available RAM 100028, slot 2
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0044a000 BFAR 0x00000000 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Step timer max interval 133
MCU temperature: min 40.8, current 41.3, max 42.2
Supply voltage: min 23.9, current 23.9, max 24.0, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 11.9, current 12.1, max 12.2, 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 728, reads 52252, writes 19 timeouts 0
Driver 1: standstill, SG min 0, mspos 248, reads 52252, writes 19 timeouts 0
Driver 2: standstill, SG min 0, mspos 712, reads 52257, writes 14 timeouts 0
Driver 3: standstill, SG min 0, mspos 392, reads 52257, writes 14 timeouts 0
Driver 4: standstill, SG min 0, mspos 8, reads 52260, writes 11 timeouts 0
Driver 5: standstill, SG min 0, mspos 8, reads 52261, writes 11 timeouts 0
Date/time: 2023-11-07 15:26:13
Slowest loop: 10.12ms; fastest: 0.05ms
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 25.0MBytes/sec
SD card longest read time 2.3ms, write time 2.6ms, max retries 0
=== Move ===
DMs created 125, segments created 3, maxWait 52720ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 5, completed 5, 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 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 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
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 6389, received 0, lost 0, boc 0
Longest wait 0ms for reply type 0, peak Tx sync delay 0, free buffers 50 (min 49), ts 6378/0/0
Tx timeouts 0,0,6377,6,0,0 last cancelled message type 30 dest 127
=== Network ===
Slowest loop: 25.69ms; fastest: 0.03ms
Responder states: HTTP(2) HTTP(2) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
= Ethernet =
State: establishingLink
Error counts: 0 0 0 0 0 0
Socket states: 0 0 0 0 0 0 0 0
= WiFi =
Interface state: active
Module is connected to access point 
Failed messages: pending 0, notready 0, noresp 0
WiFi firmware version 2.1beta4
WiFi MAC address 70:04:1d:be:b5:18
WiFi Vcc 0.00, reset reason Power up
WiFi flash size 4194304, free heap 215748
WiFi IP address 192.168.0.211
WiFi signal strength -42dBm, mode 802.11n, reconnections 0, sleep mode modem
Clock register 00002002
Socket states: 0 0 0 0 0 0 0 0
=== Multicast handler ===
Responder is inactive, messages received 0, responses 0

M98 P"config.g"

Error: Response timeout: CAN addr 123, req type 6042, RID=11
Error: Response timeout: CAN addr 123, req type 6043, RID=12
Error: Response timeout: CAN addr 123, req type 6036, RID=13
Tool 0: offsets X0.000 Y0.000 Z0.000 U0.000

@droftarts

Thanks! That appears to have fixed my issue and now my MB6HC can now consistently connect to the internet.

Hi all,

I'm setting up a Duet 3 Mainboard 6HC and trying to drive a closed-loop stepper motor through a 1HCL expansion board. However, I can't seem to get the CAN connection to work at all.

The only LEDs that light up on the 1HCL are V_FUSED and +12V, while STATUS remains completely off. The RJ11 cable is straight through.

I've attempted to reset the CAN address back to the default by shorting the CAN_RST pins, but that appears to have done nothing. I get this message typing in M122

M122 B123
Error: M122: Response timeout: CAN addr 123, req type 6024, RID=7

This is my config.g file

; Configuration file for Duet 3 MB 6HC (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.16 on Thu Nov 02 2023 15:57:08 GMT-0400 (Eastern Daylight Time)

; General preferences
G90                                             ; send absolute coordinates...
M83                                             ; ...but relative extruder moves
M550 P"PRINTER_NAME"                               ; set printer name

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

; Network
M552 P0.0.0.0 S1                                ; enable network and acquire dynamic address via DHCP
M586 P0 S1                                      ; enable HTTP
M586 P1 S0                                      ; disable FTP
M586 P2 S0                                      ; disable Telnet
M552 I1 S0										; start WiFi module
M552 I1 S1										; connect WiFi module

; Drives
M569.1 P123.0 T2 C1000.0                        ; Configure the 1HCL board at CAN address 123 with a quadrature encoder on the motor shaft that has 1000 encoder pulses per revolution
M569 P0.0 S1                                    ; physical drive 0.0 goes forwards
M569 P0.1 S0                                    ; physical drive 0.1 goes backwards
M569 P123.0 S1                                  ; physical drive 123.0 goes forwards
M569 P0.2 S1                                    ; physical drive 0.2 goes forwards
M569 P0.3 S1                                    ; physical drive 0.3 goes forwards
M584 X0.0:0.1 Y0.2 Z123.0 E0.3                  ; set drive mapping
M350 X16:16 Y16 Z16 E16 I1                      ; configure microstepping with interpolation
M92 X80.00:80.00 Y80.00 Z400.00 E420.00         ; set steps per mm
M566 X900.00:900.00 Y900.00 Z60.00 E120.00      ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00:6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00:500.00 Y500.00 Z20.00 E250.00      ; set accelerations (mm/s^2)
M906 X800:800 Y800 Z800 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 X1800 Y1800 Z130 S0                        ; set axis maxima

; Endstops
M574 X1 S1 P"io0.in+io1.in"                     ; configure switch-type (e.g. microswitch) endstop for low end on X via pin io0.in
M574 Y1 S1 P"io2.in"                            ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin io1.in
M574 Z2 S1 P"123.io0.in"                        ; configure switch-type (e.g. microswitch) endstop for high end on Z via pin 123.io0.in

; Z-Probe
M558 P0 H5 F120 T6000                           ; disable Z probe but set dive height, probe speed and travel speed
M557 X15:215 Y15:195 S20                        ; define mesh grid

; Heaters

; Fans

; Tools

; Custom settings are not defined

Images of my setup:
For some reason, I can't upload pics directly to the forum

• The 1HCL Expansion board itself
• How the MB6HC and 1HCL are wired together
• The RJ11 cable itself

Hi all,

I recently purchased a Duet 3 6HC Mainboard with a WiFi module. During setup, I noticed that the WiFi module didn't light up when I plugged the mainboard's USB cable.

Also, whenever I used the M552 command, it would respond with Ethernet is disabled, configured IP address: 0.0.0.0, actual IP address: 0.0.0.0.

I updated the mainboard's firmware to 3.4.6 and was able to successfully perform a firmware upload to the WiFi module with M997 S1 but checking the board's network status using M552 always mentions ethernet instead of WiFi and attempting to connect to a network results in the following error:

Error: M587: Failed to add SSID to remembered list: WiFi module is disabled

I've tried the above with another WiFi module which results in identical results and the voltage drop between PWR and GND on the pins for the ESP are the correct ~3.3v.