Printing temperature drops down



  • Hi dear friends! I use Cura to prepare gcodes. There the material's printing temperature is set to 250C. My printer starts nicely by 250C but after a while it drops to 200C. I have no idea where the 200C comes from.
    Here's config.g

    M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; set temperature limit for heater 0 to 120C
    M305 P1 T110000 B3950 R4700 ; set thermistor + ADC parameters for heater 1 oli100000
    M143 H1 S290 ; set temperature limit for heater 1 to 280C
    M305 P2 T100000 B3950 R4700 ; set thermistor + ADC parameters for heater 2
    M143 H2 S290 ; set temperature limit for heater 2 to 280C



  • check cura for first layer temperature and temperature.

    open the generated g code and look for M104 commands



  • @Veti said in Printing temperature drops down:

    M104
    Gcode start:
    ;FLAVOR:RepRap
    ;TIME:1672
    ;Filament used: 2.09943m, 0m
    ;Layer height: 0.2
    ;MINX:88.807
    ;MINY:86.242
    ;MINZ:0.3
    ;MAXX:181.193
    ;MAXY:183.758
    ;MAXZ:17.9
    ;Generated with Cura_SteamEngine 4.5.0
    T0
    M190 S60
    M104 S260
    -nothing between-
    -at the end:
    M107
    M104 S0
    M140 S0
    ;Retract the filament
    G10 P0 S0 R140
    G10 P1 S0 R140
    G92 E1
    G1 E-1 F300
    G28 X0 Y0
    M84
    M83 ;relative extrusion mode
    M104 S0temp.JPG



  • @Pertti
    Also initial temperature is set to 260 (sorry, not 250 as above)


  • Moderator

    Is it actually set to 200? Your chart looks like it may have had a temp excursion and then dropped. Do you see any errors in the gcode console?

    Can you share your full config.g and a sample gcode file?

    What firmware version and DWC version are you using?

    Please post the results of M122 and M98 P"config.g"



  • One thing that would do this is the standby temperature. The machine is a dual-extruder. Now I used only E0 extruder.

    Console:
    5.10.2020 klo 22.06.01 Upload of arcus e 1-200.gcode successful after 2s
    5.10.2020 klo 22.06.01 G28
    File 0:/gcodes/arcus e 1-200.gcode selected for printing
    5.10.2020 klo 22.06.01 M32 "0:/gcodes/arcus e 1-200.gcode"
    File 0:/gcodes/arcus e 1-200.gcode selected for printing
    5.10config.g .2020 klo 22.05.51 Connected to 192.168.1.11arcus e 1-200.gcode temp3.JPG



  • @Pertti
    I also have problems with the thermistor, I think it gives too high values, 260C seems to be good for PLA, resistance at 26C is 108000 kOhm. That's why I want to have a higher temperature.



  • @Pertti 5.10.2020 klo 22.30.08 M122
    === Diagnostics ===
    RepRapFirmware for Duet 2 WiFi/Ethernet version 2.03 running on Duet WiFi 1.02 or later
    Board ID: 08DGM-956GU-DJ3SW-6JKDG-3SD6N-1UM3G
    Used output buffers: 1 of 24 (11 max)
    === RTOS ===
    Static ram: 25680
    Dynamic ram: 93940 of which 0 recycled
    Exception stack ram used: 312
    Never used ram: 11140
    Tasks: NETWORK(ready,564) HEAT(blocked,1236) MAIN(running,3748) IDLE(ready,160)
    Owned mutexes:
    === Platform ===
    Last reset 00:00:31 ago, cause: software
    Last software reset at 2020-10-05 22:29, reason: User, spinning module GCodes, available RAM 11024 bytes (slot 0)
    Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
    Error status: 0
    Free file entries: 10
    SD card 0 detected, interface speed: 20.0MBytes/sec
    SD card longest block write time: 0.0ms, max retries 0
    MCU temperature: min 32.1, current 32.3, max 32.7
    Supply voltage: min 24.0, current 24.0, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes
    Driver 0: standstill, SG min/max not available
    Driver 1: standstill, SG min/max not available
    Driver 2: standstill, SG min/max not available
    Driver 3: standstill, SG min/max not available
    Driver 4: standstill, SG min/max not available
    Date/time: 2020-10-05 22:30:00
    Cache data hit count 107113306
    Slowest loop: 1.35ms; fastest: 0.07ms
    I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
    === Move ===
    Hiccups: 0, FreeDm: 169, MinFreeDm: 169, MaxWait: 0ms
    Bed compensation in use: none, comp offset 0.000
    === DDARing ===
    Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
    === Heat ===
    Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
    === GCodes ===
    Segments left: 0
    Stack records: 1 allocated, 0 in use
    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
    serial is idle in state(s) 0
    aux is idle in state(s) 0
    daemon is idle in state(s) 0
    queue is idle in state(s) 0
    autopause is idle in state(s) 0
    Code queue is empty.
    === Network ===
    Slowest loop: 15.48ms; fastest: 0.00ms
    Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
    HTTP sessions: 1 of 8

    • WiFi -
      Network state is running
      WiFi module is connected to access point
      Failed messages: pending 0, notready 0, noresp 0
      WiFi firmware version 1.23
      WiFi MAC address bc:dd:c2:63:69:18
      WiFi Vcc 3.38, reset reason Turned on by main processor
      WiFi flash size 4194304, free heap 24480
      WiFi IP address 192.168.1.11
      WiFi signal strength -37dBm, reconnections 0, sleep mode modem
      Socket states: 0 0 0 0 0 0 0 0


  • @Pertti M98 P
    Warning: Macro file not found.



  • @Pertti
    Material settings show standby temperature 150C.


  • Moderator

    @Phaedrux said in Printing temperature drops down:

    M98 P"config.g"


  • Moderator

    @Pertti said in Printing temperature drops down:

    RepRapFirmware for Duet 2 WiFi/Ethernet version 2.03 running on Duet WiFi 1.02 or later

    For starters I suggest you update to firmware 2.05.1.

    Upload this zip file as is (don't extract it) to the /sys folder via DWC.

    https://github.com/Duet3D/RepRapFirmware/releases/download/2.05.1/Duet2Firmware-2.05.1.zip



  • OK, firmware now 2.05.1. Thank's for smooth installing.
    I repeated printing, but sorry to say, nothing changed.temp4.JPG


  • Moderator

    @Phaedrux said in Printing temperature drops down:

    Is it actually set to 200? Your chart looks like it may have had a temp excursion and then dropped. Do you see any errors in the gcode console?

    Can you share your full config.g and a sample gcode file?

    What firmware version and DWC version are you using?

    Please post the results of M122 and M98 P"config.g"

    Config.g and sample gcode please



  • Ok, tomorrow.





  • I can avoid the problem by writing lines M104 S250 to the Cura machine settings/extruder starting code.
    That means that I have to configure a new printer for every material, but that is actually good, because then you have all things set up for every material.


  • Moderator

    You've got some problems in your config.g

    6.10.2020 klo 8.59.59	M98 P"config.g"
    Error: Bad command: 0:/sys/config.g
    HTTP is enabled on port 80
    FTP is disabled
    TELNET is disabled
    Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 480C.
    Warning: Heater 2 appears to be over-powered. If left on at full power, its temperature is predicted to reach 524C.
    Error: G10: Attempt to set/report offsets and temperatures for non-existent tool: 2
    

    First, at the very first line you're missing a ; to comment out the file name and path. 0:/sys/config.g

    The heater warnings are nothing serious. https://duet3d.dozuki.com/Wiki/FAQ#Section_M307_Heater_1_appears_to_be_over_powered_If_left_on_at_full_power_its_temperature_is_predicted_to_reach_521C

    Error: G10: Attempt to set/report offsets and temperatures for non-existent tool: 2
    The tool definitions are incorrect and may be part of the problem with cura. The second tool has a G10 targetting T2, but there is only T0 and T1. G10 P2 R140 That should be G10 P1 R140 S0 Plus you have a redundant tool command for T0 at the end.

    ; Tools
    M563 P0 D0 H1 F0                                ; define tool 0
    G10 P0 X0 Y0 Z0                                 ; set tool 0 axis offsets
    G10 P1 R140 S0                                  ; set initial tool 0 active and standby temperatures to 0C
    
    M563 P1 D1 H2 F0                                ; define tool 1
    G10 P1 X0 Y0 Z0                                 ; set tool 1 axis offsets
    G10 P2 R140 					; set initial tool 1 active and standby temperatures to 0C
                                        
    M563 P0 D0 H1 ; tool 0 uses extruder 0, heater 1 (and fan 0)
    
    0:/sys/config.g
    ; Leaprog 200804
    ; TITAN AERO
    ; Configuration file for Duet WiFi (firmware version 2.03)
    ; executed by the firmware on start-up
    ; Tässä versiossa y=z akselissa
    ; generated by RepRapFirmware Configuration Tool v2.1.5 on Sat Jan 11 2020 15:38:33 GMT+0200 (Itä-Euroopan normaaliaika)
    ; General preferences ;M303 H2 S240 ;Auto tuning Heater2
    
    			
    G90                                             ; send absolute coordinates... M143 
    M83                                             ; ...but relative extruder moves
    M550 P"Leapfrog-Duet"                              ; set printer name
    
    	; Network
    M552 S1                                         ; enable network
    M586 P0 S1                                      ; enable HTTP
    M586 P1 S0                                      ; disable FTP
    M586 P2 S0                                      ; disable Telnet
    
    	; Drives dualextruder
    M569 P0 S0                                      ; physical drive 0 goes forwards  X
    M569 P1 S1                                      ; physical drive 1 goes backwards Y
    M569 P2 S1                                      ; physical drive 2 goes backwards Z
    M569 P3 S1                                      ; physical drive 3 goes backwards E0
    M569 P4 S0                                      ; physical drive 4 goes forwards E1
    
     	;; Drives titan aero
     	;M569 P0 S0                                      ; physical drive 0 goes forwards  X
     	;M569 P1 S1                                      ; physical drive 1 goes  backwards Y
     	;M569 P2 S1                                      ; physical drive 2 goes forwards Z
     	;M569 P3 S0                                      ; physical drive 3 goes backwards E0 ;TITAN AERO
     	;M569 P4 S0                                      ; physical drive 4 goes backwards E1
    
    
    
    
    
    ;M584 X0 Y1 Z2 E3:4                              ; set drive mapping
    M584 X0 Z1 Y2 E3:4                              ; set drive mapping vaihdettu z-y
    
    M350 X16 Y16 Z16 E16:16 I1                      ; configure microstepping with interpolation
    						
    M92 X400.00 Y66.67 Z654.02 E144.00:144.00 	;dualextruder set steps per mm	M92 X66.67 Y66.67 Z654.02 E137.00:137.00
    	;M92 X66.67 Y66.67 Z654.02 E837.00:93.00 ;titan aero; set steps per mm
    
    M566 X900.00 Y900.00 Z12.00 E120.00:120.00       ; set maximum instantaneous speed changes (mm/min)
    
    M203 X6000.00 Y6000.00 Z180.00 E1200.00:1200.00 ; set maximum speeds (mm/min)
    
    M201 X500.00 Y500.00 Z20.00 E250.00:250.00      ; set accelerations (mm/s^2)
    
    ;M906 X800 Y1600 Z1600 E800:800 I30              ; set motor currents (mA) and motor idle factor in per cent
    M906 X800 Y800 Z1600 E800:800 I30              ; set motor currents (mA) and motor idle factor in per cent 
    
    M84 S30                                         ; Set idle timeout
    
    ; Axis Limits
    M208 X0 Y0 Z0 S1  
    
    
    M208 X270 Y300 Z200 S0                          ; set axis maxima
    
    ; Endstops
    M574 Z0 S1                                      ; set active low and disabled endstops M574 Z0 S0
    M574 X1 Y1 S1                                   ; set active high endstops
    
    
    ; Z-Probe
    M558 P0 H5 F120 T6000                           ; disable Z probe but set dive height, probe speed and travel speed
    M557 X15:200 Y15:195 S20                        ; define mesh grid
    
    ; Heaters
    	;M305 P0 T100000 B4138 R4700                     ; set thermistor + ADC parameters for heater 0
    	;M143 H0 S120                                    ; set temperature limit for heater 0 to 120C
    	;M305 P1 T100 B3950 R4700                        ; set thermistor + ADC parameters for heater 1
    	;M143 H1 S280                                    ; set temperature limit for heater 1 to 280C
    	;M305 P2 T100 B3950 R4700                   	 ; set thermistor + ADC parameters for heater 2
    	;M143 H2 S280  
    
    
    M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; set temperature limit for heater 0 to 120C
    M305 P1 T110000  B3950 R4700 ; set thermistor + ADC parameters for heater 1 oli100000
    ;M305 P1 B4725 C7.060000e-8 ; titan aero
    M143 H1 S290 ; set temperature limit for heater 1 to 280C  
    M305 P2 T100000  B3950 R4700 ; set thermistor + ADC parameters for heater 2
    M143 H2 S290 ; set temperature limit for heater 2 to 280C
    
     
    M307 H1 A455.9 C183.2 D17.7 S1.00 V24.1 B0
    M307 H2 A499.7 C172.7 D10.4 S1.00 V24.1 B0
    
    M570 H1 P4 T25 s1
    M570 H2 P10 T25
    M570 S120
    
    
    ; Fans
    M106 P0 S0.5 I0 F500 H1 T45 
    M106 P1 T45 H1
    
    ;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
    ;M106 P2 S1 I0 F500 H-1                          ; set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 T45 B0.1 H1 ; enable thermostatic mode for fan 1
    M106 P0 T45 B0.1 H1 ; enable thermostatic mode for fan 2
    
    
    
    
    
    ; Tools
    M563 P0 D0 H1 F0                                ; define tool 0
    G10 P0 X0 Y0 Z0                                 ; set tool 0 axis offsets
    G10 P1 R140 S0                                  ; set initial tool 0 active and standby temperatures to 0C
    
    M563 P1 D1 H2 F0                                ; define tool 1
    G10 P1 X0 Y0 Z0                                 ; set tool 1 axis offsets
    G10 P2 R140 					; set initial tool 1 active and standby temperatures to 0C
                                        
    M563 P0 D0 H1 ; tool 0 uses extruder 0, heater 1 (and fan 0)
    ; Custom settings are not defined
    

    Your fan settings are unusual. You've defined fan0 and fan1 twice, but differently. The second definition overrides the first.

    M106 P0 S0.5 I0 F500 H1 T45 
    M106 P1 T45 H1
    
    ;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
    ;M106 P2 S1 I0 F500 H-1                          ; set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 T45 B0.1 H1 ; enable thermostatic mode for fan 1
    M106 P0 T45 B0.1 H1 ; enable thermostatic mode for fan 2
    

    Plus, the way you have the fans setup with fan0 and fan1 being thermostatically controlled, but your tool definition has fan0 as the part cooling fan. So you need to decide what your intention is and wire it correctly. Which fan is on which tool? Which fan is thermostatically controlled for a heatsink, and which is a part cooling fan.

    Your slicer start gcode sets temps using G10 P0 R140 S205 G10 P1 R140 S205 is that where you see the temp drop down? That would match your graph. Is that after you had made the change you mention?

    ;FLAVOR:RepRap
    ;TIME:952
    ;Filament used: 0.245115m, 0m
    ;Layer height: 0.15
    ;MINX:115.018
    ;MINY:109.322
    ;MINZ:0.3
    ;MAXX:144.369
    ;MAXY:160.669
    ;MAXZ:50.1
    ;Generated with Cura_SteamEngine 4.5.0
    T0
    M190 S60
    M104 S260
    M109 S260
    M82 ;absolute extrusion mode
    G28 ;Home
    G1 Z15.0 F6000 ;Move the platform down 15mm
    ;Prime the extruder
    
    
    G10 P0 R140 S205
    G10 P1 R140 S205
    G92 E0
    G1 F200 E3
    G92 E0
    M83 ;relative extrusion mode
    G1 F1500 E-5.5
    ;LAYER_COUNT:333
    ;LAYER:0
    M106 S25.5
    G0 F3600 X116.544 Y111.12 Z0.3
    


  • Thanks a lot, Phaedrux. You gave me a good lesson. I think I need a couple of days to handle this. Anyway, line "G10 P0 R140 S205 G10 P1 R140 S205" has been there before I changed machine settings in Cura. The temperature matches reality.
    The fans are something I need to take a look at. My previous board did not function these things at all, so I connected fans to the power supply.
    BR Pertti


  • Moderator

    @Pertti said in Printing temperature drops down:

    Anyway, line "G10 P0 R140 S205 G10 P1 R140 S205" has been there before I changed machine settings in Cura. The temperature matches reality.

    I think if you remove those G10 lines from your start gcode you will solve the temperature drop problem.


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