SOLVED Error: Pin 'exp.heater3' is not free (SOLVED)



  • Hi there

    When I do things in laser mode I activate it by this command:

    M452 C"!exp.heater3" R255 S1 F2000 ;
    

    and when I'm finished I go back to normal mode with this command:

    M451
    

    But then I want to reconfigure my exp.heater3 pin to P0:

    M950 P0 C"!exp.heater3" Q1000
    

    But that gets denied with this error message:

    Error: Pin 'exp.heater3' is not free
    

    What is the correct way to free exp.heater3 after having it used in laser mode?



  • are you on firmware version 3.2?

    post your config and config overwrite.



  • Board: Duet 2 WiFi (2WiFi)
    Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.2-beta3.2 (2020-11-12)
    Duet WiFi Server Version: 1.23

    config.g:

    M584 X0 Y1 Z2:3 U3 E4 P3
    
    G90                                                     ; send absolute coordinates...
    M83                                                     ; ...but relative extruder moves
    M550 P"PaulsPrinter"                                    ; 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 S0                                              ; physical drive 0 goes back
    M569 P1 S0                                              ; physical drive 1 goes back
    M569 P2 S1                                              ; physical drive 2 goes forwards
    M569 P3 S1                                              ; physical drive 3 goes forwards
    M569 P4 S1                                              ; physical drive 3 goes forwards
    
    M350 X16 Y16 Z16 U16 E16 I1                                 ; configure microstepping with interpolation
    M92 X80.02 Y80.07 Z398.00 U398.00 E92.60                       ; set steps per mm
    M566 X900.00 Y900.00 Z12.00 U12.00 E12.00                      ; set maximum instantaneous speed changes (mm/min)
    M203 X4000 Y4000 Z360.00 U360.00 E1200                  ; set maximum speeds (mm/min)
    M201 X2000.00 Y2000.00 Z50.00 U50.00 E250.00                    ; set accelerations (mm/s^2)
    M906 X1200 Y1200 Z1200 U1200 E1200 I30                        ; set motor currents (mA) and motor idle factor in per cent
    
    M84 S10                                                 ; Set idle timeout
    
    ; Axis Limits
    M208 X-115 Y-107.5 Z0 U0 S1                                ; set axis minima
    M208 X107.5 Y107.5 Z205 U205 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 S1 P"!zstop"                                     ; configure active-high endstop for low end on Z via pin zstop
    M574 Z1 S1 P"!e0stop"
    
    ; Z-Probe
    M558 P0 H40 F120 T3000                                   ; disable Z probe but set dive height, probe speed and travel speed
    M557 X-107:107 Y-107:107 S20                            ; define mesh grid
    
    ; Heaters
    
    M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 0 as thermistor on pin bedtemp
    M950 H0 C"bedheat" T0                                   ; create bed heater output on bedheat and map it to sensor 0
    M307 H0 R0.430 C483.3 D1.01 S1.00 V12.3 B0
    M140 H0                                                 ; map heated bed to heater 0
    M143 H0 S90                                             ; set temperature limit for heater 0 to 90C
    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 R2.838 C175.3 D10.39 S1.00 V12.5 B0				; PID tuning
    
    ; Fans
    M950 F0 C"fan0" Q500                                    ; 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"fan1" Q500                                    ; create fan 1 on pin fan1 and set its frequency
    M106 P1 S1 H1 T45                                       ; set fan 1 value. Thermostatic control is turned on
    
    ; 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
    M575 P1 S1 B57600                                       ; enable support for PanelDue
    

  • administrators

    @pauledd said in Error: Pin 'exp.heater3' is not free:

    What is the correct way to free exp.heater3 after having it used in laser mode?

    You can try

    M452 C"nil"

    I'm not sure that it will work though. We don't expect users to change the laser pin to be something else, because the laser is presumably still connected.



  • @dc42 said in Error: Pin 'exp.heater3' is not free:

    M452 C"nil"

    Works, thanks, solved.


  • Moderator

    @pauledd said in Error: Pin 'exp.heater3' is not free (SOLVED):

    Board: Duet 2 WiFi (2WiFi)
    Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.2-beta3.2 (2020-11-12)
    Duet WiFi Server Version: 1.23

    Should probably update to the full 3.2.2 release.

    https://github.com/Duet3D/RepRapFirmware/releases/download/3.2.2/Duet2and3Firmware-3.2.2.zip



  • @Phaedrux said in Error: Pin 'exp.heater3' is not free (SOLVED):

    Should probably update to the full 3.2.2 release.

    Yes, but I am currently in a project where I heavily rely on my duets functionality. The nightmare update from FW V 2. to 3.x deters me from doing another update right now. 😵 😆


  • Moderator

    @pauledd Well now that you're on RRF3 the pain should be behind you.


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