Extruder heater config issue

Phaedrux

@neil said in Extruder heater config issue:

M950 H0 C"!e0heat" T0 ; create nozzle heater output on !e0heat and map it to sensor 0

That exclamation point ! is inverting the heater signal. So off is actually full power. Remove that and see if the behaviour is back to normal.

Neil

@phaedrux Ah, ok. This was done with the configurator, so I must've selected something wrong.

Neil

Removed the exclamation mark, and now it correctly does not go on automatically, but I can't get it to come on. It's disturbing me that the graph shows a plausible temperature, but the value under "Current" is showing n/a. According to the Commissioning doc/page, it seems I should show something there. FWIW, I'm saying "plausible" because it seems right at room temp, but I haven't researched the Titan Aero thermistor coefficients yet

I tried setting an active and a standby temp under "control heaters", but no change. I've noticed that if I click on "Tool 0" the "Retract" and "Extrude" buttons on the bottom become active, and I can move the extruder motor, but that's it.

I feel like the thermistor isn't "linked' with the extruder/heater or something. Not sure what I'm missing here.

This is my config now, which seems correct as per the setup doc...

; Heaters
M140 H-1                                      ; disable heated bed (overrides default heater mapping)
M308 S0 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin e0temp
M950 H0 C"e0heat" T0                          ; create nozzle heater output on e0heat and map it to sensor 0
M307 H0 B0 S1.00                              ; disable bang-bang mode for heater  and set PWM limit
M143 H0 S200                                  ; set temperature limit for heater 0 to 200C

Phaedrux

@neil said in Extruder heater config issue:

I haven't researched the Titan Aero thermistor coefficients yet

Your listed values are incorrect if it's the E3D thermistor that comes with it.

Try this instead

M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8  ; 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

engikeneer

@neil I think you are not seeing the temperature come up because you haven't mapped the heater to your tool in an M563 command. Note that the graph is labelled Heater 0, but the table is for Tool 0.

Post your full config.g and we can help you fix it if you aren't sure

Neil

@phaedrux Will try this, thanks.

Neil

@engikeneer I do see an M563, which was created by the configurator. I'm reading though the docs for the command now, but here's my full config file in the meanwhile.
I do see that now (Heater 0 vs Tool 0), but my implied understanding is that the head is the tool, and the head consists of a heater, a thermistor, an extruder, and a fan... or is this incorrect?

; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Tue Jul 12 2022 14:40:33 GMT-0400 (Eastern Daylight Time)

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

; Network
M552 S1                                       ; enable network
M586 P0 S1                                    ; enable HTTP
M586 P1 S0                                    ; disable FTP
M586 P2 S0                                    ; disable 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 X1259.84 Y80.00 Z200.00 E420.00           ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00           ; set maximum instantaneous speed changes (mm/min)
M203 X120000.00 Y120000.00 Z60000.00 E1200.00 ; set maximum speeds (mm/min)
M201 X2000.00 Y2000.00 Z100.00 E250.00        ; set accelerations (mm/s^2)
M906 X1700 Y1700 Z1700 E1400 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 X305 Y500 Z200 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 Y1 S1 P"ystop"                           ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin ystop
M574 Z1 S1 P"zstop"                           ; configure switch-type (e.g. microswitch) endstop for low end on Z via pin zstop

; Z-Probe
M558 P0 H5 F120 T30000                        ; disable Z probe but set dive height, probe speed and travel speed
M557 X15:215 Y15:195 S20                      ; define mesh grid

; Heaters
M140 H-1                                      ; disable heated bed (overrides default heater mapping)
M308 S0 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin e0temp
M950 H0 C"e0heat" T0                          ; create nozzle heater output on e0heat and map it to sensor 0
M307 H0 B1 S1.00                              ; disable bang-bang mode for heater  and set PWM limit
M143 H0 S200                                  ; set temperature limit for heater 0 to 200C

; Fans
M950 F0 C"fan0" Q500                          ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0.01 H-1                             ; set fan 0 value. Thermostatic control is turned off

; Tools
M563 P0 D0 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

engikeneer

@neil you are right, but if you want your tool to have a heater, you have to assign one to it. You could have multiple tools with different heaters, or multiple heaters for a given tool etc.

Just add H0 to your M563 which should fix it

Neil

@engikeneer said in Extruder heater config issue:

...
Just add H0 to your M563 which should fix it

Yes! Success!!! That did it.
I need to go figure out what I need to do in the online configurator so that it auto generates it for me.

Thanks for all the help everyone!

Neil

Found it. For anyone else with this same issue who comes across this thread in the future, the heater needs to be associated with the tool in the Tools tab of the online configurator. (I had it un-checked).