@phaedrux said in Which emulation to use with PE Slic3r:

@captain_sq said in Which emulation to use with PE Slic3r:

Does the M555 command affect anything at all in this scenario?

No. It's often misunderstood.

Thanks for clarifying that. /T

@phaedrux said in Which emulation to use with PE Slic3r:

@captain_sq said in Which emulation to use with PE Slic3r:

M555 P2 ; Set firmware compatibility to look like Marlin

This is used for USB response acknowledgement format and nothing more.

The slicer should be set to reprapfirmware gcode flavor.

Interesting. I use the Duet over WiFi as mentioned. Does the M555 command affect anything at all in this scenario?

I use the 2.3.3 Prusa slic3r together with a Duet Wifi (2.05.1). If I choose the FW emulation "Marlin" both in PE Slic3r and in the Duet config.g I get strange behaviour; motors moving extremely slow. The only working combination of these settings - were it behaves like expected - seems to be RepRapFirmware in PE Slic3r and Merlin in the Duet config. Like this :

M555 P2 		; Set firmware compatibility to look like Marlin

Is there an explanation for this?

Best regards /Thom

Thanks guys, I think I can manage this using this information.

I finally decided to make the leap from RRF 2.05.1 to 3. I have been searching the forum for some comprehensive instructions for this but I have come to understand that there is no "one-size fits all" for this procedure. Could someone well versed in the do's and don'ts for this take a look at my config.g file and point out the changes needed to be made? Which 3.x version shall I pick to make the transition as smooth as possible?

Thanks in advance.

The printer in question is a heavily modified TronXY X5S core XY. The hardware is a older Duet WiFi board using an Escher IR Z-level sensor. Config.s as follows:

; Configuration file for Duet WiFi (firmware version 1.17 to 1.19)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Thu Dec 14 2017 23:00:02 GMT+0100 (Västeuropa, normaltid)

; General preferences
M111 S0 		; Debugging off
G21 			; Work in millimetres
G90 			; Send absolute coordinates...
M83 			; ...but relative extruder moves
M555 P2 		; Set firmware compatibility to look like Marlin

; Mode and axis travel
M667 S1 						; Select CoreXY mode
M208 X0:325 Y-10:325 Z-0.6:380	; Set axis minima/maxima

; Endstops, Z-probe and bed mesh grid
M574 X1 Y1 S0 						; Set active low endstop switches on X and Y
M574 Z1 S2 							; Set active high Z-probe as endstop Z
M591 D0 P2 C3 S1					; Filament sensor enable Extruder 0 - E0 endst. input, normal low OK
M558 P1 H3.5 A2 R0.5 S0.02 F140 T4000 	; Set Z probe type to IR sensor, dive height, recov time, tolerance, dive speed,  and # of probings/point
G31 P500 X0 Y15 Z2.23 S25 C0.0012		; Set Z probe trigger value, X/Y offset, trigger height, TH @temp and Tcoeff-ZSensor
; M307 H3 A-1 C-1 D-1				; Decomission H3 and use it as a GPIO with Z-probe servo control
; M280 P3 S2050 I1					; Make sure Z-probe is up and out of the way -move up
; G4 P500
; M280 P3 S2000 I1					; Make sure Z-probe is up and out of the way -go back a little to avoid servo buzz
M557 X0:285 Y6:291 P13:13 			; Define mesh grid

; Drives
M569 P0 S0 				; Drive 0 goes backwards (X)
M569 P1 S0 				; Drive 1 goes backwards (Y)
M569 P2 S1 				; Drive 2 goes forwards  (Z1)
M569 P3 S0				; Drive 3 goes backwards (E0)
M569 P4 S1				; Drive 4 goes forwards  (Z2)
M584 X0 Y1 Z2:4 E3			; Two Z motors connected to driver outputs 2 and 4
M671 X396:-111 Y162:162 S5	; leadscrews at mid left, and mid right
M350 X32 Y32 Z32 I1	 		; Configure 32 microstepping with interpolation on XYZ
M350 E8				 		; Configure 8 microstepping on Extruder
M92 X160 Y160 Z800 E167			; Set steps per mm
M566 X600 Y600 Z70 E100 		; Max instantaneous speed change (mm/min)
M203 X18000 Y18000 Z700 E6000	 	; Set maximum speeds (mm/min)
M201 X2500 Y2500 Z130 E450	 		; Set accelerations (mm/s^2)
M906 X1000 Y1000 Z650 E550 I30	 	; Set motor currents (mA) and motor idle factor in per cent
M84 S30 							; Set idle timeout

; Heaters
; M304 H0 P649.2 I2.550 D1569.0 	; Use PID on bed heater using these process parameters
; M301 H1 P11.6 I0.124 D41.4		; Use PID on hotend using these process parameters
M305 P0 T100000 B3950 C0 R4700 		; Set thermistor + ADC parameters for heater 0
M143 H0 S120 				; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B3950 C0 L-70 R4700	; Set thermistor + ADC parameters for heater 1
M143 H1 S270 				; Set temperature limit for heater 1 to 270C

; Tools
M563 P0 D0 H1 				; 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

; Network
M550 PX5S 				; Set machine name
;M587 S"SSID" P"passwd" 		; Configure access point. You can delete this line once connected
M552 S1 				; Enable network
M586 P0 S1 				; Enable HTTP
M586 P1 S1 				; Enable FTP
M586 P2 S0 				; Disable Telnet

; Fans
M106 P0 S0 I0 F500 H-1 			; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
;M106 P1 S1 I0 F500 H-1 			; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
;M106 P2 S1 I0 F500 H-1 			; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

; Read in bed compensation, override etc.
M501				; Read in EEPROM Parameters
G29 S1				; Read in the bed compensation table

; Go make some final adjustments
M98 P"0:/macros/fineadjust.g"
M911 S12.8 R13.8 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000"	; Configure power loss restoration 

T0				; Select default tool

The small fineadjusting macro at the end of the config is to make quick changes to run parameters without rebooting the board. Currently, it looks like this:

; Extra Configuration file for minor adjustments
; without the need to reboot.
; executed by config.g on start-up
;
; Motor params
M92 X160 Y160 Z800 E167				; Set steps per mm
M566 X200 Y200 Z100 E600	 		; Set maximum instantaneous speed changes (mm/min)
; M203 X9000 Y9000 Z700 E6000	 	; Set maximum speeds (mm/min)
M201 X2000 Y2000 Z150 E2000 		; Set accelerations (mm/s^2)
M906 X1000 Y1000 Z650 E800 I30	 	; Set motor currents (mA) and motor idle factor in per cent

M99 	; Jump back to caller
; end

Found it. It was the dive height (H2.5) in M558, config.sys

M558 P1 H2.5 A2 R0.5 S0.02 F140 T8000 	; Set Z probe type to IR sensor, dive height........

This wasn't big enough. Strange however, previously, in 2.03 this was not a problem, even as the trigger height is 2.77 mm. Increased the value to 3.5 mm and now it works as it should.

@Phaedrux said in Z-Homing in 2.02 vs 2.05:

It's the S2 commands you're using. Normally they are to allow movement of an axis that hasn't been homed, such as to raise the Z axis for clearance, but you're using it for X and Y movements even after they have been homed once. On a corexy the S2 means move an individual motor.

Also, in newer firmwares, the G1 S parameter has been set aside for laser control (because all the laser software generates S values for laser power) so for homing moves you need to use H now.

See: https://duet3d.dozuki.com/Wiki/Gcode#Section_G0_G1_Move

See the example homeall.g for CoreXY here: https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCoreXYPrinter#Section_homeall_g_file

G91 ; relative mode
G1 S1 X-240 Y-240 F3000 ; coarse home X or Y
G1 S1 X-240 ; coarse home X
G1 S1 Y-240 ; coarse home Y
G1 X4 Y4 F600 ; move away from the endstops
G1 S1 X-10 ; fine home X
G1 S1 Y-10 ; fine home Y
''' Z homing section follows'''

OK, thanks. I'll look into it.

Brgds /Thom

For completeness, I have a macro called by config.g on its last line to make fine tuning of some parameters. The reason for putting them there is to change and run them separately conviniently without the need for rebooting the Duet. It adjusts the Z trigger height by a few hundreths of mm.

; Extra Configuration file for minor adjustments
; without the need to reboot.
; executed by config.g on start-up
;

; Probe and mesh
G31 P500 X0 Y15 Z2.68 			; Set Z probe trigger value, X/Y offset and trigger height
M557 X0:285 Y6:291 P7:7 		; Define mesh grid

; Motor params
M92 X160 Y160 Z800 E855			; Set steps per mm
M566 X200 Y200 Z100 E300 		; Set maximum instantaneous speed changes (mm/min)
; M203 X9000 Y9000 Z700 E6000	 	; Set maximum speeds (mm/min)
; M201 X2000 Y2000 Z150 E2000 		; Set accelerations (mm/s^2)
M906 X1000 Y1000 Z650 E1200 I30	 	; Set motor currents (mA) and motor idle factor in per cent

M99 	; Jump back to caller
; end

Sure thing. Her it is.

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool on Thu Dec 14 2017 23:00:02 GMT+0100 (Västeuropa, normaltid)
G91                     ; relative positioning
; X/Y -axes
G1 S2 Z3 F8000          ; lift Z relative to current position
G1 S1 X-340 Y-340 F1800 ; move quickly to X or Y endstop and stop there (first pass)
G1 S1 X-340             ; home X axis
G1 S1 Y-340             ; home Y axis
G1 S2 X5 Y0 F3000       ; go back a few mm X5 Y5 
G1 S1 X-340 F360        ; move slowly to X axis endstop once more (second pass)
G1 S1 Y-340             ; then move slowly to Y axis endstop
G1 S2 X10 Y10 F3000	; Move inside bed - X only moves to X=10
G1 S2 X20 Y-20 F3000    ; Move inside bed - Y only moves to Y=11
; Z-axis
G1 S1 Z-400 F2000	; Move fast towards sensor and stop when hit
G1 S2 Z2 F2000		; Back up a bit
G90			; back to absolute mode
G30 			; lower head, stop when probe triggered and set Z to trigger height (z set to 0)
; Set home position and park hotend
G92 X0 Y0		; set new X, Y zero position
G1 Z1 F400		; Park the hotend a mm above bed

Hi,
I have two printers powered by DuetWifi. One is a custom made Kossel (delta) and the other is a big core-xy. I've been running 2.02 on both for a long time period, more than a year. I recently updated the delta to 2.05. It worked like a charm. I liked the new web interface so decided after a week or so that I also will update the Core-xy to the same FW package.

After the update the Core-xy would not home the Z-axis correctly. I'm using the Escher IR-sensor and the Z-plane is driven by two separate motors to accomodate leadscrew adjustment. The Z-homing procedure gives an error message that the sensor was not triggered and the Z-plane ends up 3-4 mm away from the nozzle. I didnt't investigate as i were short of time. I just downgraded to 2.03 and the Core-xy was now behaving correct again.

Has the homing G-codes or their parameters behaviour changed in between versions?

Here are the relevant code from config.g that relates to the homing/sensor part:

; Mode and axis travel
M667 S1 				; Select CoreXY mode
M208 X0 Y-10 Z-0.6 S1 			; Set axis minima
M208 X325 Y325 Z380 S0 			; Set axis maxima

; Endstops, Z-probe and bed mesh grid
M574 X1 Y1 S0 				; Set active low endstop switches on X and Y
M574 Z1 S2 				; Set active high Z-probe as endstop Z
M591 D0 P2 C3 S1			; Filament sensor enable Extruder 0 - E0 endst. input, normal low OK
M558 P1 H2.5 A2 R0.35 S0.02 F140 T8000 	; Set Z probe type to IR sensor, dive height, recov time, tolerance, dive speed,  and # of probings/point
G31 P500 X0 Y15 Z2.77 			; Set Z probe trigger value, X/Y offset and trigger height

Best regards /Thom