12864 display shows heater fault on startup

KP0005

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

Phaedrux

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.

KP0005

@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

KP0005

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

dc42

@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.

dc42

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.

KP0005

@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.

dc42

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

dc42

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.