Also, manually setting a standby temperature into the web interface doesn't increase the temperature.

I get the error #Heating fault on heater 2, temperature excursion exceeded 15 degrees#

Where do I define the standby temp as I think this partly to blame.

Hi all,

I'm having an issue that seems to be related to the safety features of the duet board. I'm trying to run two volcano hotends (24v) using the default tool switching files.

I can heat them both up to printing temp at the same time but when the printer comes to use the second extruder during a print then it tries heating for a short while then says there is an error and stops the print.

From my observation it seems that the second hotend isn't sticking to the standby temperature (170) and consequently has to start from a lower temperature.

So either is there any way to get around the safety feature by extending the amount of time that is required for it to time out or is the standby temperature defined in the tool change gcodes.

Both extruders have been calibrated to 230 degrees and have the temperature to reach that in enough time when not printing.

Let me know if you require anything from my end.

Cheers,

Tom

I would have done but upon attempting to check with the multimeter I slipped and shorted something out. Board is dead.

Here is my config.

; CoreXY sample config file for dc42 Duet firmware

M111 S0                             ; Debug off
M550 PMyCoreXY				        ; Machine name (can be anything you like)
M551 Preprap                        ; Machine password (used for FTP connections)
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0xED ; MAC Address
;*** Adjust the IP address and gateway in the following 2 lines to suit your network
M552 S1 P0.0.0.0						; IP address (0 = use DHCP)
M554 P192.168.1.1                   ; Gateway
M553 P255.255.255.0                 ; Netmask
M555 P1                             ; Set output to look like Marlin
M575 P1 B57600 S1					; Comms parameters for PanelDue

; Machine configuration
M569 P0 S0							; Drive 0 goes forwards (change to S0 to reverse it)
M569 P1 S1							; Drive 1 goes forwards
M569 P2 S0							; Drive 2 goes forwards
M569 P3 S1							; Drive 3 goes forwards
M569 P4 S1							; Drive 4 goes forwards
; If you use an endstop switch for Z homing, change Z0 to Z1 in the following line, and see also M558 command later in this file
M574 X1 Y1 Z0 S1					; set endstop configuration (X and Y and endstops only, at low end, active high)
M667 S1								; set CoreXY mode
M92 X80 Y80 Z800					; Set axis steps/mm
M92 E402:402						; Set extruder steps/mm
M906 X2000 Y2000 Z2000 E800           ; Set motor currents (mA)
M201 X600 Y500 Z5 E1000            ; Accelerations (mm/s^2)
M203 X15000 Y15000 Z500 E3600       ; Maximum speeds (mm/min)
M566 X600 Y600 Z30 E20              ; Maximum jerk speeds mm/minute
M208 X450 Y500 Z1083					; set axis maxima (adjust to suit your machine)
M208 X-8 Y0 Z-0.5 S1				; set axis minima (adjust to make X=0 and Y=0 the edges of the bed)
G21                                 ; Work in millimetres
G90                                 ; Send absolute coordinates...
M83                                 ; ...but relative extruder moves

; Z probe
M558 P1 X0 Y0 Z1                    ; Analog Z probe, also used for homing the Z axis
G31 Z1.20 P500                      ; Set the probe height and threshold (put your own values here)
; The following M557 commands are not needed if you are using a bed.g file to perform bed compensation
;*** Adjust the XY coordinates in the following M557 commands to suit your build and the position of the Z probe
M557 P0 X60 Y0                      ; Four... 
M557 P1 X60 Y165                    ; ...probe points...
M557 P2 X222 Y165                   ; ...for bed...
M557 P3 X222 Y0                     ; ...levelling
;M557 P4 X141 Y82.5                 ; 5th probe point for levelling

; Thermistors and heaters
;*** If you have a Duet board with 1K thermistor series resistors, change R4700 to R1000 to the following M305 commands
; You can also use S and B parameters to define the parameters of the thermistors you are using
M305 P0 R4700 H0 L0					; Put your own H and/or L values here to set the bed thermistor ADC correction
M305 P1 R4700 H0 L0					; Put your own H and/or L values here to set the first nozzle thermistor ADC correction
M305 P2 R4700 H0 L0					; Put your own H and/or L values here to set the second nozzle thermistor ADC correction
M301 H1 P10 I0.10 D100 T0.50 S1.0	; PID settings for extruder 0
M301 H2 P10 I0.10 D100 T0.50 S1.0	; PID settings for extruder 1
M570 S120							; Increase to allow extra heating time if needed

; Tool definition
M563 P0 D0 H1 F0                  ; Define tool 0
G10 P0 S0 R0                        ; Set tool 0 operating and standby temperatures
;*** If you have a dual-nozzle build, un-comment the following 3 lines
M563 P1 D1 H2 F0                     ; Define tool 1
G10 P1 S0 R0                       ; Set tool 1 operating and standby temperatures

;*** If you are using axis compensation, put the figures in the following command
M556 S78 X0 Y0 Z0                   ; Axis compensation here
T0									; select first hot end

; Fan Configuration
M106 P0 H-1 B0.2
M106 P1 H-1	B0.2
M106 P2 H-1	B0.2

It doesn't work with S1 either. Neither did the F0:1 line.

Yep, as below.

M106 P0 S0.3 I0 H-1 F10 ; 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

Adding the M106 command didn't do anything unfortunately.

These fans were sold as PWM capable. Will try adding the M106 command to the config once I'm back in the office. Will let you know how it goes.

Cheers all!

Thanks for linking the image properly!

In my config.g I have the below for M563 but nothing for M106. Should this be in the config.g file or in another?

; Tool definition
M563 P0 D0 H1 ; Define tool 0
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
;*** If you have a dual-nozzle build, un-comment the following 3 lines
M563 P1 D1 H2 ; Define tool 1
G10 P1 S0 R0 ; Set tool 1 operating and standby temperatures

Cheers,

Tom