Only probe where the part will be printed

[OwenD]

@Proschi78

This is how I do it.
I have a macro to set my default probe points like you would normally do in config.g

I have modified my mesh.g so if it's not called using specific parameters then it probes the whole bed as normal. This would happen if you did it from DWC for example.
If the correct parameters are passed it just probes the print area.

Prusa slicer start code

M98 P"0:/sys/mesh.g" A{first_layer_print_min[0]} B{first_layer_print_max[0]} C{first_layer_print_min[1]} D{first_layer_print_max[1]} N60 ; set N to your desired distance between probe points
G29 S1  ; load small mesh

0:/sys/setDefaultProbePoints.g
Modify this to suit your bed

;0:/sys/setDefaultProbePoints.g
;setDefaultProbePoints.g
M557 X30:170 Y10:170 P6 ; set up as you would normally in config.g

0:/sys/mesh.g
You can comment out the echo's when you're happy it's working.

;mesh.g
M98 P"setDefaultProbePoints.g"
if (exists(param.A) && exists(param.B) && exists(param.C) && exists(param.D) && exists(param.N))
	var xDistance = (param.B - param.A)
	var yDistance = (param.D - param.C)
	var smallestRequired = min(var.xDistance,var.yDistance)
	var probeDistance = floor(min(var.smallestRequired,param.N))
	echo "Probe distance used:", var.probeDistance,"mm"
	var xMin = max(move.compensation.probeGrid.mins[0],param.A)
	echo "xMin = max(", move.compensation.probeGrid.mins[0],param.A,")"
	var xMax = min(move.compensation.probeGrid.maxs[0],param.B)
	echo "xMax = min(",move.compensation.probeGrid.maxs[0],param.B,")"
	var yMin = max(move.compensation.probeGrid.mins[1],param.C)
	echo "yMin = max(" ,move.compensation.probeGrid.mins[1],param.C,")"
	var yMax = min(move.compensation.probeGrid.maxs[1] ,param.D)
	echo "yMax = min(",move.compensation.probeGrid.maxs[1] ,param.D,")"
	M557 X{var.xMin,var.xMax} Y{var.yMin,var.yMax} S{var.probeDistance}
	if result != 0
		echo "Points used X",var.xMin,":",var.xMax,"Y",var.yMin,":",var.yMax, " Spacing:", var.probeDistance
		abort "Invalid M557 parameters"
 
G29 S0
var ProbeCenterX = (move.compensation.probeGrid.maxs[0] - ((move.compensation.probeGrid.maxs[0] - move.compensation.probeGrid.mins[0])/2)) ; calculate centre point of probe area
var ProbeCenterY = (move.compensation.probeGrid.maxs[1] - ((move.compensation.probeGrid.maxs[1] - move.compensation.probeGrid.mins[1])/2)) ; calculate centre point of probe area
G1 X{var.ProbeCenterX - sensors.probes[0].offsets[0]} Y{var.ProbeCenterY - sensors.probes[0].offsets[1]} Z{sensors.probes[0].diveHeight+2} F3600
G30
 

[Proschi3D]

@OwenD Thank you for your help,
i will try this afternoon

did someone manage it already with S3D?

[Proschi3D]

This post is deleted!

[Proschi3D]

@OwenD the mesh works but printing is canceled

	Extruder pressure advance: 0.065, 0.000
Error: in file macro line 7 column 7: M140: expected number after 'S'
Error: Bad command: mperature] 
Error: in file macro line 8 column 11: M190: expected number after 'r'
Error: Bad command: mperature] 
Error: in file macro line 9 column 11: M109: expected number after 'r'
Error: Bad command: mperature] T0 
Error: in file macro line 4 column 39: meta command: expected numeric operands
Cancelled printing file 0:/gcodes/Part 27 - Part 2.gcode, print time was 0h 2m
20.12.2022, 17:17:40	4 points probed, min error -0.233, max error -0.025, mean -0.132, deviation 0.078
Height map saved to file 0:/sys/heightmap.csv
20.12.2022, 17:17:28	Probe distance used: 60 mm
xMin = max( 15.0 121.681 )
xMax = min( 325.0 213.662 )
yMin = max( -15.0 75.8219 )
yMax = min( 210.0 153.294 )
20.12.2022, 17:14:32	Connected to 192.168.178.91

[OwenD]

@Proschi78
The M140, M190 & M109 commands that are causing the errors are in your code, not mine.
Most likely in your start G Code
It looks like you're using incorrect place holders for the temps

Please post the start GCode from Prusa Slicer

[Proschi3D]

@OwenD
PS start code

M703		; Load Filament specific config, including Temps
M98 P"/sys/start/Prusalinks"
 

Macro

T0
M572 D0 S0.065
M572 D1 D0.065
G90 ; set printer absolute mode
M82 ; set extruder to absolute mode
M106 S0 ; fan off
;M98 P"0:/sys/mesh.g" A{first_layer_print_min[0]} B{first_layer_print_max[0]} C{first_layer_print_min[1]} D{first_layer_print_max[1]} N60 ; set N to your desired distance between probe points
G28 ; home all axes
G28 Z0
G29
G29 s1
T0 ; set first toolhead
G1 Z3 F2000 ; Move to Z3 for height clearance before Intro line
G92 E0 ; set position
; intro line
T0
G1 Z0.35 F6000 ;
G1 X60 Y-2 F6000 ;
G1 X140 Y-2 E20 F200 ;
G1 x160 y-2 F5000
G1 Z5 F2000 ; Move to Z5 to prevent dragging nozzle and scratching bed
G1 x170 y-2 F2000
G92 E0 ; set position
G1 F9000.0 ;
M117 Printing...
 

[OwenD]

@Proschi78
Where are you setting your temps?
If it's in your filament config.g then post that too.
If you don't put heater settings in PS start code, it will probably do it for you.
So if you want to set your temps in the filament config.g then put a dummy setting in your PS start code.

[Proschi3D]

@OwenD

Extruder pressure advance: 0.065, 0.100
Error: in file macro line 6 column 59: meta command: expected numeric operands
Cancelled printing file 0:/gcodes/Part 27 - Part 1.gcode, print time was 0h 0m
20.12.2022, 20:56:33	M32 "0:/gcodes/Part 27 - Part 1.gcode"
File 0:/gcodes/Part 27 - Part 1.gcode selected for printing

T0
M572 D0 S0.065
M572 D1 D0.065
G90 ; set printer absolute mode
M82 ; set extruder to absolute mode
M106 S0 ; fan off
M98 P"0:/sys/mesh.g" A{first_layer_print_min[0]} B{first_layer_print_max[0]} C{first_layer_print_min[1]} D{first_layer_print_max[1]} N60 ; set N to your desired distance between probe points
G28 ; home all axes
G28 Z
G29
G29 S1
T0 ; set second toolhead
G1 Z3 F2000 ; Move to Z3 for height clearance before Intro line
G92 E0 ; set position
; intro line
G1 Z0.35 F6000 ;
G1 X60 Y-2 F6000 ;
G1 X140 Y-2 E20 F200 ;
G1 x160 y-2 F5000
G1 Z5 F2000 ; Move to Z5 to prevent dragging nozzle and scratching bed
G1 x170 y-2 F2000
G92 E0 ; set position
G1 F9000.0 ;
M106 P3 S33
M117 Printing...
 

[OwenD]

@Proschi78
I'm unsure where the code you have posted is located.
Please try the following in your Prusa Start GCode.
Don't call any other macros from Prusa!

M118 S"Begin slicer start g code"
;M104 S0 R0 P{current_extruder} ;Dummy  Set temps to zero to stop slicer adding them
T{current_extruder} ; select tool used on first layer
M703 ; load config file for [filament_type]
G90 ; Switch to using Absolute Coordinates
M82 ; set extruder to absolute mode
M568 P{current_extruder} R{"{heat.coldExtrudeTemperature+5}"} S{first_layer_temperature[current_extruder]} A1 ; (set extruder to stanby to soften any protruding filament before probing )
M106 P{current_extruder} S0 ;Start with fan off
M118 S"Heating Bed"
G4 S1
M140 S{first_layer_bed_temperature[current_extruder]}  R{bed_temperature[0]-20}; Set fast bed temp & standby - Standby is 20 degrees less than normal.
M116 ; Wait for bed before doing mesh probe.
M561 ; clear any bed transform
M291 S0 T3  P"Homing..."
G28 ; Home all 
M400 ; wait for last move
M98 P"0:/sys/mesh.g" A{first_layer_print_min[0]} B{first_layer_print_max[0]} C{first_layer_print_min[1]} D{first_layer_print_max[1]} N60 ; set N to your desired distance between probe points
G29 S1  ; load small mesh
G1 Z3 F2000 ; Move to Z3 for height clearance before Intro line
G92 E0 ; set position
; intro line
G1 Z0.35 F6000 ;
G1 X60 Y-2 F6000 ;
G1 X140 Y-2 E20 F200 ;
G1 x160 y-2 F5000
G1 Z5 F2000 ; Move to Z5 to prevent dragging nozzle and scratching bed
G1 x170 y-2 F2000
G92 E0 ; set position
G1 F9000.0 ;
M106 P3 S33
M117 Printing...

[Proschi3D]

@OwenD

Error: in file macro line 6 column 59: meta command: expected numeric operands
Cancelled printing file 0:/gcodes/Part 27 - Part 2.gcode, print time was 0h 2m
20.12.2022, 21:53:49	M32 "0:/gcodes/Part 27 - Part 2.gcode"
File 0:/gcodes/Part 27 - Part 2.gcode selected for printing
Begin slicer start g code
Heating Bed
 

If I exclude M98 then normal mesh leveling and printing work.

M118 S"Begin slicer start g code"
;M104 S0 R0 P{current_extruder} ;Dummy  Set temps to zero to stop slicer adding them
T{current_extruder} ; select tool used on first layer
M703 ; load config file for [filament_type]
G90 ; Switch to using Absolute Coordinates
M82 ; set extruder to absolute mode
M568 P{current_extruder} R{"{heat.coldExtrudeTemperature+5}"} S{first_layer_temperature[current_extruder]} A1 ; (set extruder to stanby to soften any protruding filament before probing )
M106 P{current_extruder} S0 ;Start with fan off
M118 S"Heating Bed"
G4 S1
M140 S{first_layer_bed_temperature[current_extruder]}  R{bed_temperature[0]-20}; Set fast bed temp & standby - Standby is 20 degrees less than normal.
M116 ; Wait for bed before doing mesh probe.
M561 ; clear any bed transform
M291 S0 T3  P"Homing..."
G28 ; Home all 
M400 ; wait for last move
;M98 P"0:/sys/mesh.g" A{first_layer_print_min[0]} B{first_layer_print_max[0]} C{first_layer_print_min[1]} D{first_layer_print_max[1]} N60 ; set N to your desired distance between probe points
G29
G29 S1  ; load small mesh
G1 Z3 F2000 ; Move to Z3 for height clearance before Intro line
G92 E0 ; set position
; intro line
G1 Z0.35 F6000 ;
G1 X60 Y-2 F6000 ;
G1 X140 Y-2 E20 F200 ;
G1 x160 y-2 F5000
G1 Z5 F2000 ; Move to Z5 to prevent dragging nozzle and scratching bed
G1 x170 y-2 F2000
G92 E0 ; set position
G1 F9000.0 ;
M106 P3 S33
M117 Printing...

[danym21]

@Proschi78
Hi, I use SuperSlicer, but I think in prusa Slicer it should also work.
in my startcode I added this line:

M557 X{first_layer_print_min[0]}:{first_layer_print_max[0]} Y{first_layer_print_min[1]}:{first_layer_print_max[1]}

maybe this will help you too.

[Proschi3D]

@danym21 Error: in GCode file line 182 column 7: M221: expected number after 'S'
Extruder pressure advance: 0.065, 0.000
Error: in file macro line 8 column 8: M557: unknown value 'first_layer_print_min^'

can you give me your whole start code ?
and mesh.g ?

[danym21]

@Proschi78
start G-Code:

G90 ; use absolute coordinates
;M83  ; extruder relative mode
;BED_MESH_CALIBRATE AREA_START={first_layer_print_min[0]},{first_layer_print_min[1]} AREA_END={first_layer_print_max[0]},{first_layer_print_max[1]}
;MINX:{first_layer_print_min[0]}
;MINY:{first_layer_print_min[1]}
;MAXX:{first_layer_print_max[0]}
;MAXY:{first_layer_print_max[1]}
M557 X{first_layer_print_min[0]}:{first_layer_print_max[0]} Y{first_layer_print_min[1]}:{first_layer_print_max[1]}
M82 ; absolute extrusion mode
M104 S140 T0
M140 S[first_layer_bed_temperature] ; set bed temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
G32 ; home all
G1 X-14 Y-10 F10000
; Reset speed and extrusion rates
M200 D0 ; disable volumetric e
M220 S100 ; reset speed
M221 S100 D0 ; reset extrusion rate
M109 S{first_layer_temperature[initial_extruder]+extruder_temperature_offset[initial_extruder]} ; wait for extruder temp
G92 E0.0
 
;G1 X150.0 E20  F1000.0 ; intro line
G1 E20  F1000.0 ; intro line
G1 X0.0 Y0.0 Z0.1 F1000.0 ; go outside print area
;G1 X5 Y0
G92 E0.0
G1 X2 Y2 Z0.2 E0 F18000 ; new
G1 X60 Y2 E9.0 F1800 ;intro Line
;G1 X200.0 E30 F500 ; second Part intro Line
G92 E0.0
G1 Z5 E-{retract_length[0]} F{retract_speed *60}
G1 X{first_layer_print_min[0]} Y{first_layer_print_min[1]} Z{first_layer_height} F30000
G1 E{retract_length[0]} F{retract_speed*60}
G92 E0.0
 

I do not use a mesh.g this does not exists on my system
my bed.g:

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun Feb 09 2020 01:08:02 GMT+0100 (Mitteleuropäische Normalzeit)
M561 ; clear any bed transform
G4 P100
G28 ; home
G0 Z10 F4200
 
G0 F60000
G30 P0 X5 Y155 Z-99999						;Orbiter
G30 P1 X302 Y155 Z-99999 S2					;Orbiter
G30 P0 X5 Y155 Z-99999						;Orbiter
G30 P1 X302 Y155 Z-99999 S2					;Orbiter
G91 										;Relative positioning
G1 Z5 F1500 								;Raise Z 5mm
G90 										;Absolute positioning
 
G0 X45 Y-5 F60000
G29 										;Probe the heatbed and generate heightmap
 
G91 										;Relative positioning
G1 Z5 F1500 								;Raise Z 5mm
G90 										;Absolute positioning
 
G4 P100
G0 X0 Y0 F60000 						;Go to Parking Position
 

some settings in config.g that maybe relevant for:

...
M671 X-52:377 Y155:155 S2.5 					   ; leadscrews at left (connected to Z) and right
...
M557 X10:300 Y10:300 P6:6; S40                     ; define mesh grid ( the normal full size mesh config)

[Proschi3D]

jetzt gehts
now it works

[danym21]

@Proschi78

[Proschi3D]

@danym21 Do you also have start codes for other slicers?

[danym21]

@Proschi78
no, sorry
but on S3d maybe have a look to this variables:
I do not know what is in, but you can test with a smal object and check then the gcode file

[build_size_x]
[build_size_y]
[build_size_z]
....
[next_position_x]
[next_position_y]
[next_position_z] 
 

they are mentioned here:
https://community.ultimaker.com/topic/11328-simplify3d-hidden-undocumented-placeholders-for-post-processing-scripts/

[Proschi3D]

@danym21 thanks I'll test that tomorrow

[Proschi3D]

@danym21 said in Only probe where the part will be printed:

@Proschi78
start G-Code:

G90 ; use absolute coordinates
;M83  ; extruder relative mode
;BED_MESH_CALIBRATE AREA_START={first_layer_print_min[0]},{first_layer_print_min[1]} AREA_END={first_layer_print_max[0]},{first_layer_print_max[1]}
;MINX:{first_layer_print_min[0]}
;MINY:{first_layer_print_min[1]}
;MAXX:{first_layer_print_max[0]}
;MAXY:{first_layer_print_max[1]}
M557 X{first_layer_print_min[0]}:{first_layer_print_max[0]} Y{first_layer_print_min[1]}:{first_layer_print_max[1]}
M82 ; absolute extrusion mode
M104 S140 T0
M140 S[first_layer_bed_temperature] ; set bed temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
G32 ; home all
G1 X-14 Y-10 F10000
; Reset speed and extrusion rates
M200 D0 ; disable volumetric e
M220 S100 ; reset speed
M221 S100 D0 ; reset extrusion rate
M109 S{first_layer_temperature[initial_extruder]+extruder_temperature_offset[initial_extruder]} ; wait for extruder temp
G92 E0.0
 
;G1 X150.0 E20  F1000.0 ; intro line
G1 E20  F1000.0 ; intro line
G1 X0.0 Y0.0 Z0.1 F1000.0 ; go outside print area
;G1 X5 Y0
G92 E0.0
G1 X2 Y2 Z0.2 E0 F18000 ; new
G1 X60 Y2 E9.0 F1800 ;intro Line
;G1 X200.0 E30 F500 ; second Part intro Line
G92 E0.0
G1 Z5 E-{retract_length[0]} F{retract_speed *60}
G1 X{first_layer_print_min[0]} Y{first_layer_print_min[1]} Z{first_layer_height} F30000
G1 E{retract_length[0]} F{retract_speed*60}
G92 E0.0
 

I do not use a mesh.g this does not exists on my system
my bed.g:

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun Feb 09 2020 01:08:02 GMT+0100 (Mitteleuropäische Normalzeit)
M561 ; clear any bed transform
G4 P100
G28 ; home
G0 Z10 F4200
 
G0 F60000
G30 P0 X5 Y155 Z-99999						;Orbiter
G30 P1 X302 Y155 Z-99999 S2					;Orbiter
G30 P0 X5 Y155 Z-99999						;Orbiter
G30 P1 X302 Y155 Z-99999 S2					;Orbiter
G91 										;Relative positioning
G1 Z5 F1500 								;Raise Z 5mm
G90 										;Absolute positioning
 
G0 X45 Y-5 F60000
G29 										;Probe the heatbed and generate heightmap
 
G91 										;Relative positioning
G1 Z5 F1500 								;Raise Z 5mm
G90 										;Absolute positioning
 
G4 P100
G0 X0 Y0 F60000 						;Go to Parking Position
 

some settings in config.g that maybe relevant for:

...
M671 X-52:377 Y155:155 S2.5 					   ; leadscrews at left (connected to Z) and right
...
M557 X10:300 Y10:300 P6:6; S40                     ; define mesh grid ( the normal full size mesh config)

what can I do with this start code so that it is probing in mesh like A5 in normal mesh?
Best off five ?

[danym21]

@Proschi78 said in Only probe where the part will be printed:

ke A5 in no

the A5 needs to be in the config.g where you configure the probe type
look for M558
https://docs.duet3d.com/User_manual/Reference/Gcodes#m558-set-z-probe-type