Ok I figured out what was wrong. I am an idiot that's what. I inadvertently set the hot end PID parameters as the Bed Parameters in the config.g file.

So, although with a multimeter all tower switch connectors were testing closed at the board end once plugged in they were signalling open. I cut them off and crimped fresh ones and it is working now. Thanks

So, although with a multimeter all tower switch connectors were testing closed at the board end once plugged in they were signalling open. I cut them off and crimped fresh ones and it is working now. Thanks

No they weren't, I will check the wiring and let you know.

M119
Endstops - X: at max stop, Y: not stopped, Z: at max stop, Z probe: not stopped

I have installed a new Duet 2 Wifi and currently have firmware 2.05.1 installed. I have used the RepRap config tool to replicate the old settings from when I was using the Duet 0.8.5 as best as I could but when trying to home it only moves the Y tower. My config.g looks like this:

; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.0 on Tue Jan 05 2021 09:06:47 GMT+0000 (Greenwich Mean Time)

; General preferences
G90                                         ; send absolute coordinates...
M83                                         ; ...but relative extruder moves
M550 P"The BFK"                             ; set printer name
M665 R171 L360 B155 H468.5                  ; Set delta radius, diagonal rod length, printable radius and homed height
M666 X0 Y0 Z0                               ; put your endstop adjustments here, or let auto calibration find them

; Network
M540 PBE:EF:DE:AD:FE:EC                     ; set custom MAC address
M552 S1                                     ; enable network
M586 P0 S1                                  ; enable HTTP
M586 P1 S1                                  ; enable FTP
M586 P2 S1                                  ; enable Telnet

; Drives
M569 P0 S1                                  ; physical drive 0 goes forwards
M569 P1 S1                                  ; physical drive 1 goes forwards
M569 P2 S1                                  ; physical drive 2 goes forwards
M569 P3 S1                                  ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                            ; set drive mapping
M350 X16 Y16 Z16 E16 I1                     ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z160.00 E4462.62        ; set steps per mm
M566 X1200.00 Y1200.00 Z1200.00 E6.00       ; set maximum instantaneous speed changes (mm/min)
M203 X21000.00 Y21000.00 Z21000.00 E3600.00 ; set maximum speeds (mm/min)
M201 X2000.00 Y2000.00 Z2000.00 E1000.00    ; set accelerations (mm/s^2)
M906 X1400 Y1400 Z1400 E600 I60             ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                     ; Set idle timeout

; Axis Limits
M208 Z-0.1 S1                               ; set minimum Z

; Endstops
M574 X2 Y2 Z2 S1                            ; set active high endstops

; Z-Probe
M558 P5 R0.4 H10 F120 T2400                 ; set Z probe type to effector and the dive height + speeds
G31 P100 X0 Y0 Z-0.1                        ; set Z probe trigger value, offset and trigger height
M557 R155 S20                               ; define mesh grid

; Heaters
M305 P0 T100000 B3950 R4700                 ; set thermistor + ADC parameters for heater 0
M143 H0 S160                                ; set temperature limit for heater 0 to 160C
M305 P1 X200                                ; configure PT100 for heater 1
M143 H1 S285                                ; set temperature limit for heater 1 to 285C

; Fans
M106 P0 S0 I0 F500 H-1                      ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H-1                      ; set fan 1 value, PWM signal inversion and frequency. 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
M501                                        ; load saved parameters from non-volatile memory
T0                                          ; select first tool

and my homedelta.g looks like this:

; homedelta.g
; called to home all towers on a delta printer
;
; generated by RepRapFirmware Configuration Tool v3.2.0 on Tue Jan 05 2021 09:06:47 GMT+0000 (Greenwich Mean Time)
G91                       ; relative positioning
;*** Slow homing has been configured. Change F180 to F1800 below when your configuration is working
G1 H1 X483 Y483 Z483 F180 ; move all towers to the high end stopping at the endstops (first pass)
G1 H2 X-5 Y-5 Z-5 F1800   ; go down a few mm
;*** Slow homing has been configured. Change F180 to F360 below when your configuration is working
G1 H1 X10 Y10 Z10 F180    ; move all towers up once more (second pass)
G1 Z-5 F2400              ; move down a few mm so that the nozzle can be centred
G90                       ; absolute positioning
G1 X0 Y0 F2400            ; move X+Y to the centre

I just don't even know where to begin but I will say that I can use the dashboard to move the print head up and down with the Z+ and Z- buttons and all towers move fine and apparently evenly.

@Veti

Thanks

Hi All,

I just want to confirm what I am doing is ok and correct and to get some help with some configuration.

I have upgraded my Duet 0.8.5 with a Duet 2 Wifi running Firmware 3.11. I already had a generic Max31865 for my PT100 sensor and want to continue using this with the Duet 2 as it works OK.

Previously I have it connected to the 50 pin connector as shown here. Now on the Duet 2 WiFi I have it connected as follows.

Is this correct and how do I go about telling the Duet which channel to use? Would is be as simple as adding this

 M308 S1 P"spi.cs0" Y"rtd-max31865"

to the config.g and what M950 command would assign it to the hot end?

Thanks

Ok I figured out what was wrong. I am an idiot that's what. I inadvertently set the hot end PID parameters as the Bed Parameters in the config.g file.

OK so with my bed removed and carefully placed on the side but still fully connected I can see that the light on the duet comes on and the light on the SSR comes on for a short time then the error occurs and they both go out so I think this is either a fault with the Duet or with the configuration maybe but as nothing has changed in the configuration I am unsure why it should suddenly start behaving this way. I have checked all the connections are still good and tight . I am unsure how it determines that the temperature should rise at 1.7°C/sec.

Error: Heating fault on heater 0, temperature rising much more slowly than the expected 1.7°C/sec

So a few days ago I posted that I was seeing hot end temperatures about 25°C high at idle and that after taking some bits apart and putting it back together that it seemed to be working. Shortly after I started to get the above error when the bed has reached about 30°C.

I checked the silicone heater and it seemed to only be getting warm in one spot so I assumed that it was faulty and I have procured a replacement but now that the replacement in in place the error persists.

My configuration for the Bed is

M305 P0 T100000 B3950 R4700 H-20 L0

but this has not changed since I started using it.

My Printer uses a mains voltage heater through an SSR. I do not really know how to troubleshoot whether it is the duet, SSR or Power Supply that is at fault but I am assuming the PS is ok. I am open to suggested troubleshooting methods.

And now that I put it all back together its reading 30°C which is only about 3°C high compared to the bed temperature. Maybe a bit or tarnish on the connector or something, I will keep an eye on it.