Stop part cooling fans on pause and restore on resume

[Serbitar]

I am trying to set my printer to disable part cooling fans when pause is invoked and restore them to the pre-paused state on resume.

With the pause/resume macros below, pause works perfectly however resume does not restore the fan speeds (but print does continue).

Am I doing something wrong here?

sys/pause.g

G91 ; relative positioning 
G1 Z50 
G90 ; Absolute positioning
 
G53 G1 x0 y-999 F60000; Send carriage to rear centre
 
M106 S0 ; Turn off part cooling
T-1     ; Deselect tool so standby temp (0) is requested

sys/resume.g

T R1     ; Reselect last tool
M106 R1  ; Turn on part cooling
M703     ; Load tool paramaters
M116     ; Wait for temps
 
M83                  ; relative extruder moves
G1 E10 F3600         ; extrude 10mm of filament
 
G1 R1 X0 Y0 Z5 F6000 ; go to 5mm above position of the last print move

config.g

M550 P"hevort" ; set machine label
M584 X0.3 Y0.4 Z0.0:0.1:0.2 E0.5 ; Assign drivers to axes
M669 K1 ; Set system to CoreXY
 
M569 P0 S0 D2 ;H0             ; Reverse Z1 motor direction
M569 P1 S0 D2 ;H0             ; Reverse Z2 motor direction
M569 P2 S0 D2 ;H0             ; Reverse Z3 motor direction
M569 P3 S0 D2 ;H0             ; Reverse X motor direction
M569 P4 S0 D2 ;H0             ; Reverse Y motor direction
M569 P5 S0 D2 ;H0             ; Extruder motor setup, reverse direction
 
M671 X-31:546:257 Y0:0:546 S100 ; Set Z probe points
 
M574 X1 S1 P"io1.in"            ; Configure X endstop
M574 Y1 S1 P"io2.in"            ; Configure Y endstop
M574 Z2 S4                      ; Use stallguard for Z1 endstop for max Z. Allow each motor to stall independently
 
M915 X S3 F0 R1                 ; Configure stallguard detection for X
M915 Y S3 F0 R1                 ; Configure stallguard detection for Y
M915 Z S1 H400 F1 R1            ; Configure stallguard detection for Z
M915 E S3 F0 R1                 ; Configure stallguard detection for E
 
 
M906 X1500 Y1500 Z1500 E1000 I80    ; Motor currents in ma + idle percentage
M92 X80 Y80 E400 Z800               ; Steps per mm
M203 Z2500 Y100000 X100000          ; Max feedrate in mm/min
M201 X1000.0 Y1000.0 Z50.0 E250.0   ; Max acceleration mm/sec^2
M566 X900.0 Y900.0 Z50.0 E120.0 P1  ; MAx instantaneous speed change
 
M308 S0 P"temp0" Y"thermistor" A"Bed" T100000 B3950 ; Set up bed thermistor
M950 H0 C"out0" T0 Q10              ; Set up bed heater output
M140 P0 H0                          ; Configure bed heater
M307 H0 A110.3 C221.0 D3.9 V24.0 B0 ; Configure bed heating process parameters
M304 P91.5 I3.111 D250.3            ; Configure bed heating PID parameters
 
M308 S1 P"temp1" Y"thermistor" A"Hotend" T100000 ; B3950 ; Set up hotend thermistor
M950 H1 C"out1" T1 ; Set up hotend heater
M563 P0 S"Volcano" D0.5 H1 F2:4; Create new tool for hotend using air pump and hevacs
M143 H1 S300 A3 ; Set max heater temp to 300C
G10 P0 X0 Y0 Z0 R0 S200 ; Set default tool temperatures and offsets
;M307 H1 A838.7 C467.3 D8.3 V23.9 B0 ; Hotend pid parameters
;M307 H1 R1.612 C384.3 D10.70 S1.00 V24.0 ; PID Parameters Volcano, 220C
M307 H1 R1.752 C200.1 D8.36 S1.00 V24.0 ; PID Parameters Volcano, 220C + full berd air
  
M308 S10 P"spi.cs0" Y"dht22" A"Enclosure Temp"          ; Set AM2302/DHT22 pin
M308 S11 P"S10.1" Y"dhthumidity" A"Enclosure Humidity"  ; Set AM2302/DHT22 humidity subsensor
 
M950 S2 C"io4.out"                 ; Bltouch servo pin
M558 C"^io4.in" H20 F600 T6000 P9  ; Configure z probe, Bltouch
M280 P2 S160                       ; Reset BLTouch
 
G31 P500 X12 Y-27 Z2.940           ; set Z probe trigger value, offset and trigger height
 
M950 C"out2" F0                    ; First fan = Water pump can add tacho input later
M106 P0 S255 T50 C"Water pump" H1  ; Set Fan0 to be thermostatically controlled against hotend temp > 50C
 
M950 C"out4+out4.tach"  F1         ; Second fan = radiator fan
M106 P1 S255 T50 H1 C"Radiator fan"
 
M950 C"out3"  F2 Q30000                ; Third fan = air pump
M106 P2 C"Air pump"
M950 C"out9"  F3 Q30000                ; Enclosure LED
M106 P3 C"Lights" S255
M950 C"!out5" F4                       ; HEVACS inverted PWM
M106 P4 X0.30 C"HEVACS"			; Max 30% PWM
 
 
M591 D0 P1 C"^io0.in" S1               ; Filament runout sensor
 
M208 X-265.7 Y-260 Z0 S1             ; Set axes minima
M208 X249.3 Y240 Z470                ; Set axes maxima
;M208 X249.3 Y245 Z500                ; Set axes maxima
M557 X-250:249.3 Y-262.7:232 S25     ; Set probe grid limits
 
M572 D0 S0.025                         ; Pressure advance
M207 P0 S0.2 F2400                     ; Retraction 0.2mm at 40mm/s
 
;M955 P0 C"io3.out+io3.in"       ; Accelerometer int,CS
;M956 P0 S1000 A0 
 
;M81                                    ; PSU Off
 
; Buttons
M950 J0 C"^io6.in" ; Black
M581 P0 T0 ; Estop
M950 J1 C"^io7.in" ; Yellow
M581 P1 T1 ; Pause
M950 J2 C"^io8.in" ; Green
M581 P2 T2 ; Trigger2 (resume)

m122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.3RC1+1 (2021-05-01 21:43:52) running on Duet 3 MB6HC v0.6 or 1.0 (SBC mode)
Board ID: 08DJM-956L2-G43S8-6J9D8-3S86J-9B36F
Used output buffers: 4 of 40 (12 max)
=== RTOS ===
Static ram: 150680
Dynamic ram: 63820 of which 0 recycled
Never used RAM 136836, free system stack 121 words
Tasks: SENSORS(delaying,0.0%,68) SBC(ready,5.4%,282) HEAT(delaying,0.0%,295) Move(notifyWait,0.2%,242) CanReceiv(notifyWait,0.0%,945) CanSender(notifyWait,0.0%,359) CanClock(notifyWait,0.0%,335) TMC(notifyWait,8.2%,59) MAIN(running,86.1%,649) IDLE(ready,0.0%,29), total 100.0%
Owned mutexes: HTTP(MAIN)
=== Platform ===
Last reset 00:11:06 ago, cause: software
Last software reset at 2021-05-05 21:34, reason: User, none spinning, available RAM 136836, slot 0
Software reset code 0x0012 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0x00000000 SP 0x00000000 Task SBC Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
Aux1 errors 0,0,0
Step timer max interval 700
MCU temperature: min 42.5, current 47.6, max 47.8
Supply voltage: min 0.2, current 23.9, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 0.1, current 12.2, max 12.7, under voltage events: 0
Heap OK, handles allocated/used 99/0, heap memory allocated/used/recyclable 2048/4/4, gc cycles 0
Driver 0: position 3214, standstill, reads 25339, writes 23 timeouts 0, SG min/max 0/1023
Driver 1: position 679, standstill, reads 25339, writes 23 timeouts 0, SG min/max 0/1023
Driver 2: position 5115, standstill, reads 25339, writes 23 timeouts 0, SG min/max 0/838
Driver 3: position 0, ok, reads 25344, writes 18 timeouts 0, SG min/max 0/1023
Driver 4: position 0, ok, reads 25346, writes 18 timeouts 0, SG min/max 0/1023
Driver 5: position 0, ok, reads 25350, writes 14 timeouts 0, SG min/max 0/1023
Date/time: 2021-05-05 21:45:51
Slowest loop: 172.77ms; fastest: 0.04ms
=== Storage ===
Free file entries: 10
SD card 0 not detected, interface speed: 37.5MBytes/sec
SD card longest read time 0.0ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 125, maxWait 155884ms, bed compensation in use: mesh, comp offset 0.000
=== MainDDARing ===
Scheduled moves 10298, completed moves 10263, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 2], CDDA state 3
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
Heater 0 is on, I-accum = 0.2
Heater 1 is on, I-accum = 0.6
=== GCodes ===
Segments left: 1
Movement lock held by null
HTTP* is doing "M122" in state(s) 0
Telnet is idle in state(s) 0
File* is doing "G1 X15.886000 Y1.369000 E9.200960" in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger* is idle in state(s) 0
Queue* is idle in state(s) 0
LCD is idle in state(s) 0
SBC is idle in state(s) 0
Daemon is idle in state(s) 0
Aux2 is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Filament sensors ===
Extruder 0 sensor: ok
=== CAN ===
Messages queued 5994, send timeouts 5991, received 0, lost 0, longest wait 0ms for reply type 0, peak Tx sync delay 0, free buffers 49 (min 49)
Last cancelled message type 4514 dest 127
=== SBC interface ===
State: 4, failed transfers: 0
Last transfer: 4ms ago
RX/TX seq numbers: 26806/26806
SPI underruns 0, overruns 0
Number of disconnects: 0, IAP RAM available 0x2c90c
Buffer RX/TX: 432/1688-0
=== Duet Control Server ===
Duet Control Server v3.3-rc1
File:
Buffered code: G1 X15.886 Y1.369 E9.20096
Buffered code: G1 X13.720 Y3.536 E9.30466
Buffered code: G1 X11.993 Y1.808 E9.38734
Buffered code: G1 X8.804 Y1.137 F30000.000
Buffered code: G1 F6694.566
Buffered code: G1 X1.320 Y8.621 E9.75648
Buffered code: G1 X1.320 Y9.214 E9.77717
Buffered code: G1 X9.214 Y1.320 E10.16654
Buffered code: G1 X9.807 Y1.320 E10.18723
Buffered code: G1 X1.320 Y9.807 E10.60585
Buffered code: G1 X1.320 Y10.400 E10.62654
Buffered code: G1 X10.400 Y1.320 E11.07443
Buffered code: G1 X10.929 Y1.320 E11.09286
Buffered code: G1 X10.961 Y1.352 E11.09445
Buffered code: G1 X1.352 Y10.961 E11.56840
Buffered code: G1 X1.649 Y11.258 E11.58303
Buffered code: G1 X11.258 Y1.649 E12.05698
Buffered code: G1 X11.554 Y1.946 E12.07161
Buffered code: G1 X1.946 Y11.554 E12.54556
Buffered code: G1 X2.242 Y11.851 E12.56019
Buffered code: G1 X11.851 Y2.242 E13.03413
Buffered code: G1 X12.148 Y2.539 E13.04876
Buffered code: G1 X2.539 Y12.148 E13.52271
Buffered code: G1 X2.835 Y12.444 E13.53734
Buffered code: G1 X12.444 Y2.835 E14.01129
Buffered code: G1 X12.741 Y3.132 E14.02592
Buffered code: G1 X3.132 Y12.741 E14.49986
Buffered code: G1 X3.429 Y13.037 E14.51449
Buffered code: G1 X13.037 Y3.429 E14.98844
Buffered code: G1 X13.334 Y3.725 E15.00307
==> 1424 bytes
Code buffer space: 2264
Configured SPI speed: 8000000 Hz
Full transfers per second: 40.37
Codes per second: 16.57
Maximum length of RX/TX data transfers: 4992/1640
File /opt/dsf/sd/gcodes/3DBenchy.gcode is selected, processing
 

[Phaedrux]

In pause.g can you try using M106 S0 P0 and then in resume try using M106 R2?

[Serbitar]

@phaedrux

pause.g

G91 ; relative positioning 
G1 Z50
G90 ; Absolute positioning
 
G53 G1 x0 y-999 F60000; Send carriage to rear centre
 
M106 S0 P0 ; Turn off part cooling?
T-1     ; Deselect tool

resume.g

T R1     ; Reselect last tool
M106 R2  ; Turn on part cooling
M703     ; Load tool paramaters
M116     ; Wait for temps
 
 
M83                  ; relative extruder moves
G1 E10 F3600         ; extrude 10mm of filament
 
;; Move back into pos
G1 R1 X0 Y0 Z5 F6000 ; go to 5mm above position of the last print move

In this case pause did not stop the fans and they remained running after resume.

[Phaedrux]

Sorry I assumed your part cooling fan was on fan0, but I see that's not the case.

M563 P0 S"Volcano" D0.5 H1 F2:4

In that case try M106 S0 P2:4

What is the format of the fan commands that your slicer is sending?

[Serbitar]

@phaedrux
Slicer is doing M106 S255.

With M106 S0 P2:4 in pause.g the fans don't stop.
I'm doing that before deselecting the tool though so won't they be controlled by the virtual tool fan at that point?

[Phaedrux]

Thanks for testing but I think I misguided you as I don't think M106 will accept two fan targets.

M106 S0 P2:4

But it should be storing and restoring your fan values, but it's not, so possibly a bug. Will see what DC42 says.

[Phaedrux]

Likely bug. On the list to investigate.

[Serbitar]

Yep looks bugged to me too.

pause.g

T-1     ; Deselect tool
M106 S0 P2
M106 S0 P4

correctly stops the fans and

resume.g

T R1     ; Reselect last tool
M106 R2  ; Turn on part cooling
M703     ; Load tool paramaters
M116     ; Wait for temps

resumes the fans but stops them once temps are reached and print resumes

[dc42]

@serbitar please try M106 R1 not M106 R2. Also you should use a plain M106 S0 command to turn the fans off in pause.g. But think that's what you were doing originally.

Does it make any difference if you remove the M703 command?

[Serbitar]

@dc42 Ah, that is an artifcact from playing with this last week, well spotted.

Changed config as you suggested, and thing still aren't working as desired.

Fans stop on pause but are not restored.

Is there some way to peek into the stored state?

pause.g

G91 ; relative positioning 
G1 Z50
G90 ; Absolute positioning
 
G53 G1 x0 y-999 F60000; Send carriage to rear centre
 
M106 S0 ; Turn off part cooling 
T-1     ; Deselect tool
;M106 S0 P2
;M106 S0 P4

resume.g

T R1     ; Reselect last tool
M106 R1  ; Turn on part cooling
;M703     ; Load tool paramaters
M116     ; Wait for temps
 
M83                  ; relative extruder moves
G1 E10 F3600         ; extrude 10mm of filament
 
;; Move back into pos
G1 R1 X0 Y0 Z5 F6000 ; go to 5mm above position of the last print move

[dc42]

@serbitar I confirm that this is a problem. There is a single set of saved fan speeds used by both pause/resume and tool changes. What's happening is that when you reselect the tool in resume.g, the current fan speed is zero, and that's overwriting the value saved when the pause occurred.

[Serbitar]

@dc42 Thanks for looking into it, that makes sense.
I will change my pause.g to use G10 to turn the hotend heater off instead (for now).

[dc42]

@serbitar I have implemented a fix in RRF 3.3RC2. I have also added a new parameter to M568 that allows you to switch a tool's heaters between off, standby, and active.

[Serbitar]

@dc42 Wow fantastic! I looks forward to experimenting with it once released!