12864 display shows heater fault on startup



  • For a few weeks now, I have been having issues with my display setup. The hotend heater shows a fault on startup (my menu was configured to show heater faults), and once the fault clears, the display doesn't reset and the place where a fault symbol was displayed remains blank. I can't connect to the board fast enough to chatch the fault in DWC, so I am wandering if this is a software or hardware error. This has only been happening relatively recently (with no changes to my menu system), specifically after I did a firmware update and changed an extruder sock. Would shorting 12V to thermistor cause such an issue?

    My menu system: https://github.com/Sidic101/Duet-Maestro-12864-Menu-Files


  • Moderator

    What firmware version?
    Can you post your config.g?
    On the off chance there is a warning coming from your config.g you can send M98 Pconfig.g to re-execute config,g and you'll be able to see any error messages that wouldn't otherwise be visable during startup.



  • @Phaedrux said in 12864 display shows heater fault on startup:

    M98 Pconfig.g

    the command just warns me about overpowered heaters, it does not reproduce the issue

    latest RRF(3.01 RC7) and DWC(2.1.2)

    Config.g:

    ; Configuration file for Duet Maestro (firmware version 3)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v2.1.8 on Mon Jan 20 2020 18:17:29 GMT+0100 (Central European Standard Time)
    
    ; General preferences
    G90                                                    				 ; send absolute coordinates...
    M83                                                   				 ; ...but relative extruder moves
    M550 P"Print-a-Reeno"                                 		 ; set printer name
    M918 P1 E-4 F2000000                                   		 ; configure direct-connect display
    
    ; Network
    M552 P0.0.0.0 S1                                      			 ; enable network and acquire dynamic address via DHCP
    M586 P0 S1                                            			 ; enable HTTP
    M586 P1 S0                                            			 ; disable FTP
    M586 P2 S0                                            			 ; disable Telnet
    
    ; Drives
    M569 P0 S1 D3 F3 B2 Y5:1 V100                		 ; physical drive 0 goes forwards
    M569 P1 S1 D3 F3 B2 Y5:1 V100	               		 ; physical drive 1 goes forwards
    M569 P2 S1 D3 F3 B2 Y5:1 V0                   			 ; physical drive 2 goes forwards
    M569 P3 S0 D2 F3 B2 Y0:3            				 ; physical drive 3 goes backwards
    M584 X0 Y1 Z2 E3                                    			 ; set drive mapping
    M350 X16 Y16 Z16 E16 I1  	                             		 ; configure microstepping with interpolation
    M92 X100.00 Y100.00 Z400.00 E950.3                	 ; set steps per mm
    M566 X300.00 Y300.00 Z24.00 E3000.00               	 ; set maximum instantaneous speed changes (mm/min)
    M203 X16000.00 Y12000.00 Z1000.00 E10000.00   ; set maximum speeds (mm/min)
    M201 X1500.00 Y1500.00 Z200.00 E3000.00         	 ; set accelerations (mm/s^2)
    M906 X500 Y550 Z500 E800 I30                          	 ; set motor currents (mA) and motor idle factor in per cent
    M84 S70                                               				 ; set idle timeout
    M572 D0 S0.06                                     	    		 ; set extruder 1 pressure advance
    M207 S0.8 F3000 T1500 Z0.6                    		         ; set G10 retraction parameters
    
    ; Axis Limits
    M208 X0 Y-4 Z-2 S1                           	     	        	 ; set axis minima
    M208 X250 Y210 Z213 S0                                  	         ; set axis maxima
    
    ; Endstops
    M574 X1 S1 P"xstop"                         	            		 ; configure active-high endstop for low end on X via pin xstop
    M574 Y1 S1 P"ystop"                       	                	 ; configure active-high endstop for low end on Y via pin ystop
    M574 Z1 S2                                 	                		 ; configure Z-probe endstop for low end on Z
    M591 D0 P2 C"e0_stop" S1                 	                 ; configure filament runout sensor
    
    ; Z-Probe	
    M558 P1 C"zprobe.in" H2 F900 T6000 A1       		 ; set Z probe type to unmodulated and the dive height + speeds
    G31 P500 X0 Y0 Z0.2                             	        	 ; set Z probe trigger value, offset and trigger height
    M557 X12.3:215 Y1.5:197.6 P7:7                      		 ; define bed probe grid
    M376 H10                                              			 ; define where bed mesh compensation tapers off
    
    ; Heaters
    M308 S0 P"bedtemp" Y"thermistor" T100000 B3950  				 ; configure sensor 0 as thermistor on pin bedtemp
    M950 H0 C"bedheat" T0 Q60000                           	     		 ; create bed heater output on bedheat and map it to sensor 0
    M143 H0 S125                                         		         ; set temperature limit for heater 0 to 125C
    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
    M570 H0 P10 T3 S5                                          	         ; set heater 0 fault conditions
    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
    M143 H1 S275                                       	        		 ; set temperature limit for heater 1 to 275C
    M307 H1 B0 S1.00                    	               		         ; disable bang-bang mode for heater  and set PWM limit
    M570 H1 P10 T3 S5                           	                	 ; set heater 1 fault conditions
    M302 S175 R80                                        	         	 ; set minimum extrusion and retraction temperature
    
    ; Fans
    M950 F0 C"fan0" Q60000                              	        	 ; create fan 0 on pin fan0 and set its frequency
    M106 P0 S0 H-1                                      	        	 ; set fan 0 value. Thermostatic control is turned off
    M950 F1 C"fan2 + ^exp.pa21" Q60000                             		 ; create fan 1 on pin fan2 and set its frequency
    M106 P1 S1 H1 T45                                  	       		 	 ; set fan 1 value. Thermostatic control is turned on
    
    ; Tools
    M563 P0 S"Skelestruder" 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
    M912 P0 S-6.8                                          	        	 ; calibrate MCU temperature
    M308 S2 Y"mcu_temp" A"MCU"											 ; show MCU temperature in graph
    
    M200 D1.75                                          	        	 ; set default filament diameter
    
    ; Miscellaneous
    M501                                                  	        	 ; load saved parameters from non-volatile memory
    T0                                                    				 ; select first tool
    
    
    


  • It almost looks like the printer starts with the fault condition on boot and has to clear it later


  • administrators

    @Matej101 said in 12864 display shows heater fault on startup:

    and once the fault clears, the display doesn't reset

    Are you saying that the fault clears itself, without you having to send M562 to reset it? If so then I think the heater fault indication is spurious, because heater faults don't clear themselves.


  • administrators

    PS - is it a bed heater fault or a hot end heater fault that is reported?

    I can see a possible problem with the code if the display code starts running before tool 0 has been created. I will fix that in the 3.01 release or the next 3.01 RC if there is one. Meanwhile, try moving the M918 command to be after the M563 command.



  • @dc42 said in 12864 display shows heater fault on startup:

    563

    Thanks, that fixed it!
    It was the hotend heater, the display showed a fault on boot but it cleared itself almost instantly. Also it only did this after a complete power on, not after doing a board reset.


  • administrators

    Thanks for confirming this. I've put the fix in the RRF3 source code already.


  • administrators

    This is now fixed in the 3.01 source code and in the firmware binaries at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0.


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