Current speed greater than Max speed?

User3D

In DWC, I see top speed greater than my max speed set in config. How is this possible ?

engikeneer

@User3D does your slicer issue any speed commands that override it?

User3D

@engikeneer I just checked gcode file and found out that it does contain command to set feedrate to a greater value.
When I am setting max speed using M203 then speed should not go beyond it irrespective of whatever feedrate I set in G1 Fnnn .

deckingman

@User3D Can you share your config.g file and config_overide.g file if you use one. Also, the section of the gcode file that you are printing up to the first few print moves. Better still, upload the entire gcode file to Dropbox or Google drive so that we can see the whole thing. And tell us what max speed DWC is reporting while doing that print.

User3D

@deckingman I even observed today that when I don't set feedrate and run my axes , it takes feedrate set in paneldue. That feedrate is 6000 and my max speed is 5100 and on giving commands, axes are actually going upto 6000 (confirms DWC). This should not happen.

dc42

Post your config.g file.
After observing the speed being higher than you think you have set, send M203 without parameters to see what speed limits it reports.

User3D

@dc42 M203 it reports correct values only .

Config:

; General preferences
G90                                     ; send absolute coordinates...
M83                                     ; ...but relative extruder moves


M552 P192.42.42.20 S1                   ; enable network 
M586 P0 S1                              ; enable HTTP
M586 P1 S0                              ; disable FTP
M586 P2 S0                              ; disable Telnet
M551 P"DUET"							; set Password

G4 S1
; Drives
M569 P40.0 S1                             ; physical drive 0 goes forwards
M569 P41.0 S1                             ; physical drive 1 goes forwards
M569 P0.2 S1                              ; physical drive 2 goes forwards
M569 P0.3 S1                              ; physical drive 3 goes forwards
M584 X40.0 Y41.0 Z0.2:0.3 E0.4            ; set drive mapping
M350 X8 Y8 Z16 E16 I1				      ; set microstepping with interpolation
M92 X400.00 Y400.00 Z800.00 E415.00       ; set steps per mm (motor : 1.8 + leadscreaw + TR4)
M566 X300 Y300 Z120.00  E300.00     	  ; set maximum instantaneous speed changes (mm/min)
M203 X5100.00 Y5100.00 Z1800.00 E6000.00  ; set maximum speeds (mm/min)       
M201 X300.00 Y300.00 Z55.00 E350.00    	  ; set accelerations (mm/s^2)
M906 X2800 Y2800 Z800 E800 I30            ; set motor currents (mA) and  motor idle factor in per cent
M84 S30                                   ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                          ; set axis minima
M208 X290 Y290 Z290 S0                    ; set axis maxima

; Endstops
M574 X1 S1 P"40.io0.in"                   ; set active high the low endstop : X 
M574 Y1 S1 P"41.io0.in"                   ; set active high the high endstop : Y 
M574 Z1 S1 P"io3.in"                      ; set active high the low endstop : Z 

; Filament sensor 	
M591 D0 P2 C"io5.in" S1					  ; configure filament sensor at io_5 
M950 J1 C"io5.out" 
M581 P1 T2 R0 S1 				          ; trigger2.g on filament loading


; Z-Probe : BL-Touch
M558 P9 C"io4.in" H8 F120 T3000			  ; configure BL-Touch on IO pin - 4
M950 S0 C"io4.out"      				 
G31 P25 X0 Y60 Z0						  ; set x,y and z offset of bl-touch from printhead
M557 X15:275 Y130:300 S80                ; define mesh grid 
  


; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4138    ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0							    ; create bed heater o/p on out0 and it map it to sensor 0  
M307 H0 A33.3 C56.2 D1.9 S1.00 V23.9 B0         ; enable bang-bag mode and set gain,const time ,dead time,PWM,voltage.  unTuned->M307 H0 B0 S1.00
M143 H0 S150									; set temperature limit for heater 1 to 150C

;Extruder
M308 S1 P"temp1" Y"thermistor" T500000 B4723 C1.19622e-7    ;configure sensor 1 as thermistor on pin temp1 for type SLICE ENGINEERING 
M950 H1 C"out1" T1 											;create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 S1.00											;disable bang-bang mode for heater and set PWM limit
M143 H1 S390                                                ;set temperature limit for heater 1 to 280C

; Tools
M563 P0 S"Extruder" 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                         			; for panelDue support
M280 P0 S160  									 	; set push-pin alarm release

M501			   			                        ; run config-override.g
T0 												    ;select tool 0 (here, extruder)
M140 H0 S45											; set bed heater temerature to 45c
M911 S20 R22.7 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F700"   ; set voltage thresholds and actions to run on power loss

Config-override :

; config-override.g file generated in response to M500
; This is a system-generated file - do not edit
; Heater model parameters
M307 H0 A33.3 C56.2 D1.9 S1.00 V23.9 B0
M307 H1 A340.0 C140.0 D5.5 S1.00 V0.0 B0
; Workplace coordinates
G10 L2 P1 X0.00 Y0.00 Z0.00
G10 L2 P2 X0.00 Y0.00 Z0.00
G10 L2 P3 X0.00 Y0.00 Z0.00
G10 L2 P4 X0.00 Y0.00 Z0.00
G10 L2 P5 X0.00 Y0.00 Z0.00
G10 L2 P6 X0.00 Y0.00 Z0.00
G10 L2 P7 X0.00 Y0.00 Z0.00
G10 L2 P8 X0.00 Y0.00 Z0.00
G10 L2 P9 X0.00 Y0.00 Z0.00

dc42

Please provide a screenshot of DWC showing excessive speed. If your PC runs Windows then you can use shift-Win-S to do freeze the screen and get a screenshot. Also a shot of the M203 report please.

Which firmware version are you using?

User3D

@dc42 FIRMWARE VERSION-3.3beta
PANELDUE - 3.2.9
DWC - 3.2.0

DWC output: (current speed = 100 > max speed) :

PanelDue feedrate setting:

Before running axes:

After:

dc42

What was the move that you are executed? If it's a Cartesian machine, then as both X and Y can move at 5100mm/min simultaneously, the combined speed of a diagonal move can be higher, up to 5100 * sqrt(2) for a move at 45 degrees.

User3D

@dc42 said in Current speed greater than Max speed?:

What was the move that you are executed?
G1 X290 Y290 G1 X0 Y0

If it's a Cartesian machine, then as both X and Y can move at 5100mm/min simultaneously, the combined speed of a diagonal move can be higher, up to 5100 * sqrt(2) for a move at 45 degrees.

Got it. This is happening on diagonal moves only. Thank you.