I had posted this last week but it wouldn't let me respond to the advice I was given.
I have a duet 3 6xd board and am using a panel due to control it. I had all the heating elements working a week ago which includes a Dyze Design Pulsar pellet extruder and a heated bed. However, I used the wrong material inside of the large extruder and after taking it apart and cleaning it the duet board no longer senses the changing temperatures. This includes both the heated bed and the extruder. I can tell the parts are heating up from touching them and using a multimeter to test the resistance.
The PT100 sensors have been tested and worked in the past. It is not just the PT100 sensors as the bed heaters aren't sensing any change either.
Here is the configuration file.
; Configuration file for Duet 3 MB 6XD (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.16 on Wed Aug 09 2023 11:18:13 GMT-0500 (Central Daylight Time)
; A lot of the configuation file was untouched
; General preferences
M575 P1 S1 B57600 ; enable support for PanelDue
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"SAAM" ; set printer name
; Network
M552 S0 ; disable network (do not connect to network)
; Drives
M569 P0.0 S1 ; physical drive 0.0 goes forwards
M569 P0.1 S1 ; physical drive 0.1 goes forwards
M569 P0.2 S1 ; physical drive 0.2 goes forwards
M569 P0.3 S1 ; physical drive 0.3 goes forwards
M569 P0.4 S1 ; physical drive 0.4 goes forwards
M569 P0.5 S1 ; physical drive 0.5 goes forwards
M584 X0.0:0.2 Y0.1:0.4 Z0.3 E0.5 ; set drive mapping (X and Y have 2 motors and extruder has one)
M92 X150.00 Y150.00 Z0.00 E224.6 ; set steps per mm
M566 X700.00 Y700.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X1500.00 Y1500.00 Z180.00 E9000.00 ; set maximum speeds (mm/min)
M201 X400.00 Y400.00 Z20.00 E250.00 ; 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
; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X480 Y240 Z0 S0 ; set axis maxima
; Endstops
M574 X1 S1 P"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 Z1 S1 P"io3.in" ; configure switch-type (e.g. microswitch) endstop for low end on Z via pin io2.in
;do not use a z-probe
; 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
;Bed
M308 S0 P"temp1" Y"thermistor" T100000 B3950 ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out3" T1 ; create bed heater output on out3 and map it to sensor 1
M307 H0 B0 S1.00 ; disable 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
;Extruder
M308 S1 P"spi.cs1" Y"rtd-max31865" ; configure sensor 1 as PT100 on pin spi.cs1
M950 H1 C"out2" T1 ; create nozzle heater output on out0 and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S480 ; set temperature limit for heater 1 to 480C
M308 S2 P"spi.cs2" Y"rtd-max31865" ; configure sensor 2 as PT100 on pin spi.cs2
M950 H2 C"out1" T2 ; create nozzle heater output on out0 and map it to sensor 2
M307 H2 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H2 S480 ; set temperature limit for heater 2 to 480C
M308 S3 P"spi.cs3" Y"rtd-max31865" ; configure sensor 3 as PT100 on pin spi.cs2
M950 H3 C"out0" T3 ; create nozzle heater output on out0 and map it to sensor 3
M307 H4 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H4 S480 ; set temperature limit for heater 3 to 480C
; Fans
;no fan
M950 F0 C"out8" Q500 ; create fan 0 on pin out8 and set its frequency
M106 P0 S1 H-1 ; set fan 0 value. Thermostatic control is turned off
; Tools
; no 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
; Added from the Pulsar guide that sets the three heaters together and sets their PID values
M563 P0 D0 H1:2:3 S"Pulsar"
M307 H1 A940 C810 D22 S1.0 B0
M307 H2 A940 C810 D22 S1.0 B0
M307 H6 A795 C920 D10 S1.0 B0