[3.4.0b6 - 3.4.0b7+7] G02 / G03 Errant Movement and Extrusion
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Similar effects seen here by @zylantha, although reportedly upgrading to 3.4.0b6 solved the issue for them.
https://forum.duet3d.com/topic/26000/g02-g03-arc-issues
Duet2 Wifi +Duex5, 3.4.0beta7+7. IDEX, so X motion is from a single stepper, Y is from a single stepper, etc.
Config.g; Configuration file for Duet WiFi ; executed by the firmware on start-up ; ; General preferences G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves ; Network M550 P"test printer1" ; Set machine name M552 S1 ; Enable network ;*** Access point is configured manually via M587 M586 P0 S1 ; Enable HTTP M586 P1 S0 ; Disable FTP M586 P2 S0 ; Disable Telnet ; Type M669 K0 ; Drives M584 X0 Y1 Z2 U5 E3:4 ; create the U axis and assign stepper driver 5 to it (duex E2) M569 P0 S1 ; Physical drive 0 goes forwards X M569 P1 S1 ; Physical drive 1 goes forwards Y M569 P2 S0 ; Physical drive 2 goes backwards Z M569 P5 S0 ; Physical drive 5 goes Backwards U M569 P3 S0 ; Physical drive 3 goes backwards E0 M569 P4 S1 ; Physical drive x goes forwards E1 M350 X16 Y16 Z16 U16 E16:16 I1 ; Configure microstepping with interpolation M92 X100.00 Y96.00 Z1280.00 U100.00 E415.00:415.00 ; Set steps per mm M566 X100.00 Y100.00 Z500.00 U100.00 E36000.00:36000.00 ; Set maximum instantaneous speed changes (mm/min) - the extruder jerk settings are a mistake... but I also have not seen any downsides to them. M566 P1 M203 X18000.00 Y18000.00 Z1320.00 U18000.00 E3000.00:3000.00 ; Set maximum speeds (mm/min M201 X4000.00 Y4000.00 Z450.00 U4000.00 E3000.00:3000.00 ; Set accelerations (mm/s^2) M906 X1800.00 Y2400.00 Z2400.00 U1800.00 E1960.00:1960.00 I30 ; Set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X-260 Y-237.5 Z-4.65 U-150 S1 ; Set axis minima M208 X156 Y237.5 Z210.35 U267 S0 ; Set axis maxima ; Endstops M574 X1 S1 P"xstop" M574 Y2 S1 P"ystop" M574 U2 S1 P"e0stop" ; Z-Probe M574 Z1 S2 ;probe M558 P9 C"^zprobe.in" H5 F1000:200 A8 R0.75 T6000 S.02 ; set Z probe type to bltouch and the dive height + speeds M950 S0 C"duex.pwm1" G31 P25 X36.5 Y16.26 Z1.50 ; set Z probe trigger value, offset and trigger height 01/03/22 M557 X-220:160 Y-200:200 S20:25 ; define mesh grid M376 H5 ; Heaters M140 H0 ;heated bed H0 M308 S0 P"bed_temp" Y"thermistor" T100000 B3950 R4700 ; set thermistor + ADC parameters for heater 0 M950 H0 C"bed_heat" T0 Q5 ;heater 0 uses the bed_heat pin, sensor 0 M143 H0 S170 ; set temperature limit for heater 0 to 170C M308 S1 P"e0_temp" Y"thermistor" T500000 B4723 C1.196220e-7 ; Set thermistor + ADC parameters for heater 1 M950 H1 C"e0_heat" T1 M143 H1 S450 ; Set temperature limit for heater 1 to 450C M308 S2 P"e1_temp" Y"thermistor" T500000 B4723 C1.196220e-7 ; Set thermistor + ADC parameters for heater 2 M950 H2 C"e1_heat" T2 M143 H2 S450 ; Set temperature limit for heater 2 to 450C M308 S3 P"e2_temp" Y"thermistor" T100000 B4725 C7.060000e-8 R4700 A"Chamber1" ; Chamber M308 S4 P"e3_temp" Y"thermistor" T100000 B4725 C7.060000e-8 R4700 A"Y-Stepper" ; Y-Stepper ; Fans M950 F3 C"duex.fan3" M950 F4 C"duex.fan4" M950 F5 C"fan0" M950 F6 C"duex.fan5" M106 P3 S255 ;12v E0 fan always on M106 P4 S255 ;12v E1 fan always on M106 P5 S128 H3 T68 ;24v fan thermostat - chamber ; Tools M563 P0 D0 H1 F6 ; Define tool 0, extruder 0, heater 1, fan 6 G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C M563 P1 D1 H2 X3 ; Define tool 1, extruder 1, heater 2, maps X to U G10 P1 X0 Y.0 U0 Z.2 ; Set tool 1 axis offsets G10 P1 R0 S0 ; Set initial tool 1 active and standby temperatures to 0C M563 P2 D0:1 H1:2 X0:3 F6 ; tool 2 uses both extruders and hot end heaters, maps X to both X and U, both fans G10 P2 X0 Y0 U-263.5 S0 R0 ; set tool offsets and temperatures for tool 2 M567 P2 E1:1 ; set mix ratio 100% on both extruders ;Other M593 p"mzv" F23.85 M572 D0 S0.07 ; set extruder 0 pressure advance to 0.07 seconds M572 D1 S0.02 ; set extruder 1 pressure advance to 0.02 seconds M575 P1 S1 B57600 ;paneldue M955 P0 I52 C"spi.cs3+spi.cs4" ; T0 accelerometer ; Automatic saving after power loss is not enabled ; Custom settings are not configured M501Currently on 3.4.0beta7+7 (2022-01-14), but this specific print exhibited the same issues on 3.4.0b6. I have not previously seen this on my prints when using G02/G03.
There are two issues.
- The 'tab' located tangent to the fillet running up the print in this section.
- The tiny, machine-directed oscillations when printing a certain section of the first layer inner and outer walls.
A surely correlated issue is Arcwelder is turning some straight segments into G02/G03 curves - seen further down in the Craftware image. While I'm not saying there aren't print quality/accuracy issues resulting from this, the processed G02/G03 segments are perfectly reasonable - I see no reason why this extra movement and extrusion is occurring.
Issue 1:
Quick image from Craftware (does not properly display G02/G03, but this should help show that these specific G03 segments are occurring up to layer 47, and then stopping)
Sample from NC Viewer - properly displays the G02/G03 segments (in blue vs yellow)
Essentially the print head is moving left - to right. When it reaches the theoretical junction between the flat and the fillet, the print head continues moving to the right (red arrows), then moves directly back (opposite direction red arrow), and then continues on the proper path (blue curve)
Video in action: https://youtu.be/9ubaPqV4fgM?t=16 specifically observe 0:20 - 0:21, as that is when the back and forth motion occurs.
Second video: https://youtu.be/kwp4qZYJqNE?t=9 - observe 0:10 - 0:11Second issue:
It seems at certain speeds, this area of G03 curves displays some super cool oscillations. Video taken while in print, at F900
https://youtu.be/BHhxILOG4-kBad section in red.
Copying those lines into a macro, and running it at F1500 - a little more extreme. A G1 move in that direction and feed does not have any oscillation, and with the G03 command and a higher feed (F2700) the issue disappears. Disabling input shaping has no positive effect.
https://www.youtube.com/watch?v=-QAZbSkS80sGcode file:
https://drive.google.com/file/d/1lFCP3wLp_RGa2EG9O3XYhTDd1qRgQHJ9/view?usp=sharingRelevant sections of trouble for issue 1 and 2 respectively - feel free to paste these into NC Viewer for a quick check.
G2 X-120.253 Y13.572 I-4.141 J2.453 E0.08242 F1350 G2 X-122.654 Y12.626 I-2.971 J4.021 E0.11094 G1 X-123.13 Y12.595 E0.02029 G1 X-172.429 Y12.594 E2.09676 G1 X-172.649 Y12.594 E0.00936 G1 X-172.649 Y12.814 E0.00234 G1 X-172.649 Y34.819 E0.9359 G1 X-176.972 Y34.819 E0.18386 G1 X-176.972 Y8.492 E1.11972 G1 X-176.972 Y8.272 E0.00936 G3 X-122.978 Y8.274 I0.110 J725868.340 E2.28942 G3 X-118.776 Y9.400 I-0.239 J9.297 E0.18670 G3 X-115.460 Y12.438 I-4.436 J8.170 E0.19315 G3 X-113.983 Y16.438 I-7.732 J5.128 E0.18295 G1 X-113.926 Y17.085 E0.02762 G3 X-113.912 Y76.456 I-125423.351 J59.261 E2.52513 G1 X-114.132 Y76.456 E0.00234 G1 X-118.234 Y76.456 E0.17446 G1 X-118.234 Y17.769 E2.49604 G2 X-118.797 Y15.276 I-5.037 J-0.173 E0.10982 G1 X-118.96 Y14.999 E0.01367;COPIED GCODE, MODIFIED INTO A MACRO FILE G1 F1200 Z5 ;FOR SAFETY G2 X-120.627 Y12.812 I-4.540 J2.858 F900 ;TRY CHANGING THIS VALUE TO SEE IF THE ISSUE IS BETTER/WORSE G2 X-123.116 Y12.155 I-2.590 J4.768 G1 X-172.87 Y12.154 G1 X-173.089 Y12.154 G1 X-173.089 Y12.373 G1 X-173.089 Y34.379 G1 X-176.532 Y34.379 G1 X-176.532 Y8.931 ;E1.00658 G1 X-176.532 Y8.712 ;E0.00866 G3 X-122.991 Y8.714 I0.110 J713728.301 ;E2.11127 ;PROBLEMS START HERE G3 X-118.986 Y9.787 I-0.226 J8.854 ;E0.16550 G3 X-115.780 Y12.753 I-4.230 J7.788 ;E0.17450 G3 X-114.394 Y16.721 I-7.472 J4.836 ;E0.16779 G1 X-114.356 Y17.341 ;E0.02457 G3 X-114.352 Y76.016 I-428738.224 J58.566 ;E2.32084 G1 X-114.571 Y76.016 ;E0.00216 G1 X-117.794 Y76.016 ;E0.12748 G1 X-117.794 Y17.636 ;E2.30917 G2 X-118.405 Y15.075 I-5.423 J-0.060 ;E0.10513 G1 X-118.643 Y14.671 ;E0.01855 G0 F18000 X-118.96 Y14.999 ;TYPE:WALL-OUTER G2 X-120.253 Y13.572 I-4.141 J2.453 F900 G2 X-122.654 Y12.626 I-2.971 J4.021 ;E0.10317 G1 X-123.13 Y12.595 ;E0.01887 G1 X-172.429 Y12.594 ;E1.94998 G1 X-172.649 Y12.594 ;E0.0087 G1 X-172.649 Y12.814 ;E0.00218 G1 X-172.649 Y34.819 ;E0.87039 G1 X-176.972 Y34.819 ;E0.17099 G1 X-176.972 Y8.492 ;E1.04134 G1 X-176.972 Y8.272 ;E0.0087 G3 X-122.977 Y8.274 I0.110 J725895.282 ;E2.12921 ;PROBLEMS HERE G3 X-118.775 Y9.400 I-0.239 J9.297 ;E0.17363 G3 X-115.412 Y12.511 I-4.444 J8.177 ;E0.18305 G3 X-113.956 Y16.683 I-7.825 J5.071 ;E0.17643 G1 X-113.916 Y17.33 ;E0.02564 G3 X-113.912 Y76.456 I-435359.518 J59.016 ;E2.33868 G1 X-114.132 Y76.456 ;E0.00218 G1 X-118.234 Y76.456 ;E0.16225 G1 X-118.234 Y17.646 ;E2.32618 G2 X-118.797 Y15.276 I-4.993 J-0.066 ;E0.09727 G1 X-118.96 Y14.999 ;E0.01271 G0 F18000 X-118.543 Y14.755 G1 F2100 ;E-0.75 -
A macro as short as this is an easy way to induce issue #1
G1 X-176.972 Y8.272 ;Start Position G3 X-122.978 Y8.274 I0.110 J725868.340 G3 X-118.776 Y9.400 I-0.239 J9.297 G4 S3 ;Pause G1 X-176.972 Y8.272 ;Return to Start -
undefined Phaedrux marked this topic as a question
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@dc42 Is there a better way of logging with M111 to assist with your troubleshooting efforts?
Attached is a YAT terminal log with debugging on for MOVE and DAA. I've copied lines that only detail 'transformed' further below- was attempting to log the following macro, which contains only two move commands. Important - look at forum lines 209 through 217, it appears that in this specific macro we're moving beyond the endpoint by 1.75mm! Reflected in chart below.
G1 X-176.972 Y8.272 G3 X-122.978 Y8.274 I0.110 J725868.340Debug log -
Line 3: Transformed -176.97 8.27 100.00 267.00 to -17697 794 128000 26700 Line 5: Transformed -176.72 8.25 100.00 267.00 to -17672 792 128000 26700 Line 6: Transformed -176.47 8.25 100.00 267.00 to -17647 792 128000 26700 Line 7: Transformed -176.22 8.25 100.00 267.00 to -17622 792 128000 26700 Line 8: Transformed -175.97 8.25 100.00 267.00 to -17597 792 128000 26700 Line 9: Transformed -175.72 8.25 100.00 267.00 to -17572 792 128000 26700 Line 10: Transformed -175.47 8.25 100.00 267.00 to -17547 792 128000 26700 Line 11: Transformed -175.22 8.25 100.00 267.00 to -17522 792 128000 26700 Line 12: Transformed -174.97 8.25 100.00 267.00 to -17497 792 128000 26700 Line 13: Transformed -174.72 8.25 100.00 267.00 to -17472 792 128000 26700 Line 14: Transformed -174.38 8.25 100.00 267.00 to -17438 792 128000 26700 Line 15: Transformed -174.13 8.25 100.00 267.00 to -17413 792 128000 26700 Line 16: Transformed -173.88 8.25 100.00 267.00 to -17388 792 128000 26700 Line 17: Transformed -173.63 8.25 100.00 267.00 to -17363 792 128000 26700 Line 18: Transformed -173.38 8.25 100.00 267.00 to -17338 792 128000 26700 Line 19: Transformed -173.13 8.25 100.00 267.00 to -17313 792 128000 26700 Line 20: Transformed -172.88 8.25 100.00 267.00 to -17288 792 128000 26700 Line 21: Transformed -172.63 8.25 100.00 267.00 to -17263 792 128000 26700 Line 22: Transformed -172.38 8.25 100.00 267.00 to -17238 792 128000 26700 Line 23: Transformed -172.05 8.25 100.00 267.00 to -17205 792 128000 26700 Line 24: Transformed -171.80 8.25 100.00 267.00 to -17180 792 128000 26700 Line 25: Transformed -171.55 8.25 100.00 267.00 to -17155 792 128000 26700 Line 26: Transformed -171.30 8.25 100.00 267.00 to -17130 792 128000 26700 Line 27: Transformed -171.05 8.25 100.00 267.00 to -17105 792 128000 26700 Line 28: Transformed -170.80 8.25 100.00 267.00 to -17080 792 128000 26700 Line 29: Transformed -170.55 8.25 100.00 267.00 to -17055 792 128000 26700 Line 30: Transformed -170.30 8.25 100.00 267.00 to -17030 792 128000 26700 Line 31: Transformed -170.05 8.25 100.00 267.00 to -17005 792 128000 26700 Line 32: Transformed -169.71 8.25 100.00 267.00 to -16971 792 128000 26700 Line 33: Transformed -169.46 8.25 100.00 267.00 to -16946 792 128000 26700 Line 34: Transformed -169.21 8.25 100.00 267.00 to -16921 792 128000 26700 Line 35: Transformed -168.96 8.25 100.00 267.00 to -16896 792 128000 26700 Line 36: Transformed -168.71 8.25 100.00 267.00 to -16871 792 128000 26700 Line 37: Transformed -168.46 8.25 100.00 267.00 to -16846 792 128000 26700 Line 38: Transformed -168.21 8.25 100.00 267.00 to -16821 792 128000 26700 Line 39: Transformed -167.96 8.25 100.00 267.00 to -16796 792 128000 26700 Line 40: Transformed -167.71 8.25 100.00 267.00 to -16771 792 128000 26700 Line 41: Transformed -167.38 8.25 100.00 267.00 to -16738 792 128000 26700 Line 42: Transformed -167.13 8.25 100.00 267.00 to -16713 792 128000 26700 Line 43: Transformed -166.88 8.25 100.00 267.00 to -16688 792 128000 26700 Line 119: Transformed -166.63 8.25 100.00 267.00 to -16663 792 128000 26700 Line 128: Transformed -166.38 8.25 100.00 267.00 to -16638 792 128000 26700 Line 133: Transformed -166.13 8.25 100.00 267.00 to -16613 792 128000 26700 Line 138: Transformed -165.88 8.25 100.00 267.00 to -16588 792 128000 26700 Line 143: Transformed -165.63 8.25 100.00 267.00 to -16563 792 128000 26700 Line 148: Transformed -165.38 8.25 100.00 267.00 to -16538 792 128000 26700 Line 153: Transformed -165.04 8.25 100.00 267.00 to -16504 792 128000 26700 Line 158: Transformed -164.79 8.25 100.00 267.00 to -16479 792 128000 26700 Line 163: Transformed -164.54 8.25 100.00 267.00 to -16454 792 128000 26700 Line 168: Transformed -164.29 8.25 100.00 267.00 to -16429 792 128000 26700 Line 173: Transformed -164.04 8.25 100.00 267.00 to -16404 792 128000 26700 Line 178: Transformed -163.79 8.25 100.00 267.00 to -16379 792 128000 26700 Line 183: Transformed -163.54 8.25 100.00 267.00 to -16354 792 128000 26700 Line 188: Transformed -163.29 8.25 100.00 267.00 to -16329 792 128000 26700 Line 193: Transformed -163.04 8.25 100.00 267.00 to -16304 792 128000 26700 Line 198: Transformed -162.70 8.25 100.00 267.00 to -16270 792 128000 26700 Line 203: Transformed -162.45 8.25 100.00 267.00 to -16245 792 128000 26700 Line 208: Transformed -162.20 8.25 100.00 267.00 to -16220 792 128000 26700 Line 213: Transformed -161.95 8.25 100.00 267.00 to -16195 792 128000 26700 Line 218: Transformed -161.70 8.25 100.00 267.00 to -16170 792 128000 26700 Line 223: Transformed -161.45 8.25 100.00 267.00 to -16145 792 128000 26700 Line 228: Transformed -161.20 8.25 100.00 267.00 to -16120 792 128000 26700 Line 233: Transformed -160.95 8.25 100.00 267.00 to -16095 792 128000 26700 Line 238: Transformed -160.70 8.25 100.00 267.00 to -16070 792 128000 26700 Line 243: Transformed -160.37 8.25 100.00 267.00 to -16037 792 128000 26700 Line 248: Transformed -160.12 8.25 100.00 267.00 to -16012 792 128000 26700 Line 253: Transformed -159.87 8.25 100.00 267.00 to -15987 792 128000 26700 Line 258: Transformed -159.62 8.25 100.00 267.00 to -15962 792 128000 26700 Line 263: Transformed -159.37 8.25 100.00 267.00 to -15937 792 128000 26700 Line 268: Transformed -159.12 8.25 100.00 267.00 to -15912 792 128000 26700 Line 273: Transformed -158.87 8.25 100.00 267.00 to -15887 792 128000 26700 Line 278: Transformed -158.62 8.25 100.00 267.00 to -15862 792 128000 26700 Line 283: Transformed -158.37 8.25 100.00 267.00 to -15837 792 128000 26700 Line 288: Transformed -158.03 8.25 100.00 267.00 to -15803 792 128000 26700 Line 293: Transformed -157.78 8.25 100.00 267.00 to -15778 792 128000 26700 Line 298: Transformed -157.53 8.25 100.00 267.00 to -15753 792 128000 26700 Line 303: Transformed -157.28 8.25 100.00 267.00 to -15728 792 128000 26700 Line 308: Transformed -157.03 8.25 100.00 267.00 to -15703 792 128000 26700 Line 313: Transformed -156.78 8.25 100.00 267.00 to -15678 792 128000 26700 Line 318: Transformed -156.53 8.25 100.00 267.00 to -15653 792 128000 26700 Line 323: Transformed -156.28 8.25 100.00 267.00 to -15628 792 128000 26700 Line 328: Transformed -156.03 8.25 100.00 267.00 to -15603 792 128000 26700 Line 333: Transformed -155.69 8.25 100.00 267.00 to -15569 792 128000 26700 Line 338: Transformed -155.44 8.25 100.00 267.00 to -15544 792 128000 26700 Line 343: Transformed -155.19 8.25 100.00 267.00 to -15519 792 128000 26700 Line 348: Transformed -154.94 8.25 100.00 267.00 to -15494 792 128000 26700 Line 353: Transformed -154.69 8.25 100.00 267.00 to -15469 792 128000 26700 Line 358: Transformed -154.44 8.25 100.00 267.00 to -15444 792 128000 26700 Line 363: Transformed -154.19 8.25 100.00 267.00 to -15419 792 128000 26700 Line 368: Transformed -153.94 8.25 100.00 267.00 to -15394 792 128000 26700 Line 373: Transformed -153.69 8.25 100.00 267.00 to -15369 792 128000 26700 Line 378: Transformed -153.36 8.25 100.00 267.00 to -15336 792 128000 26700 Line 383: Transformed -153.11 8.25 100.00 267.00 to -15311 792 128000 26700 Line 388: Transformed -152.86 8.25 100.00 267.00 to -15286 792 128000 26700 Line 393: Transformed -152.61 8.25 100.00 267.00 to -15261 792 128000 26700 Line 398: Transformed -152.36 8.25 100.00 267.00 to -15236 792 128000 26700 Line 403: Transformed -152.11 8.25 100.00 267.00 to -15211 792 128000 26700 Line 408: Transformed -151.86 8.25 100.00 267.00 to -15186 792 128000 26700 Line 413: Transformed -151.61 8.25 100.00 267.00 to -15161 792 128000 26700 Line 418: Transformed -151.36 8.25 100.00 267.00 to -15136 792 128000 26700 Line 423: Transformed -151.02 8.25 100.00 267.00 to -15102 792 128000 26700 Line 428: Transformed -150.77 8.25 100.00 267.00 to -15077 792 128000 26700 Line 433: Transformed -150.52 8.25 100.00 267.00 to -15052 792 128000 26700 Line 438: Transformed -150.27 8.25 100.00 267.00 to -15027 792 128000 26700 Line 443: Transformed -150.02 8.25 100.00 267.00 to -15002 792 128000 26700 Line 448: Transformed -149.77 8.25 100.00 267.00 to -14977 792 128000 26700 Line 453: Transformed -149.52 8.25 100.00 267.00 to -14952 792 128000 26700 Line 458: Transformed -149.27 8.25 100.00 267.00 to -14927 792 128000 26700 Line 463: Transformed -149.02 8.25 100.00 267.00 to -14902 792 128000 26700 Line 468: Transformed -148.68 8.25 100.00 267.00 to -14868 792 128000 26700 Line 473: Transformed -148.43 8.25 100.00 267.00 to -14843 792 128000 26700 Line 478: Transformed -148.18 8.25 100.00 267.00 to -14818 792 128000 26700 Line 483: Transformed -147.93 8.25 100.00 267.00 to -14793 792 128000 26700 Line 488: Transformed -147.68 8.25 100.00 267.00 to -14768 792 128000 26700 Line 493: Transformed -147.43 8.25 100.00 267.00 to -14743 792 128000 26700 Line 498: Transformed -147.19 8.25 100.00 267.00 to -14719 792 128000 26700 Line 503: Transformed -146.94 8.25 100.00 267.00 to -14694 792 128000 26700 Line 508: Transformed -146.69 8.25 100.00 267.00 to -14669 792 128000 26700 Line 513: Transformed -146.35 8.25 100.00 267.00 to -14635 792 128000 26700 Line 518: Transformed -146.10 8.25 100.00 267.00 to -14610 792 128000 26700 Line 523: Transformed -145.85 8.25 100.00 267.00 to -14585 792 128000 26700 Line 528: Transformed -145.60 8.25 100.00 267.00 to -14560 792 128000 26700 Line 533: Transformed -145.35 8.25 100.00 267.00 to -14535 792 128000 26700 Line 538: Transformed -145.10 8.25 100.00 267.00 to -14510 792 128000 26700 Line 543: Transformed -144.85 8.25 100.00 267.00 to -14485 792 128000 26700 Line 548: Transformed -144.60 8.25 100.00 267.00 to -14460 792 128000 26700 Line 553: Transformed -144.35 8.25 100.00 267.00 to -14435 792 128000 26700 Line 558: Transformed -144.01 8.25 100.00 267.00 to -14401 792 128000 26700 Line 563: Transformed -143.76 8.25 100.00 267.00 to -14376 792 128000 26700 Line 568: Transformed -143.51 8.25 100.00 267.00 to -14351 792 128000 26700 Line 573: Transformed -143.26 8.25 100.00 267.00 to -14326 792 128000 26700 Line 578: Transformed -143.01 8.25 100.00 267.00 to -14301 792 128000 26700 Line 583: Transformed -142.76 8.25 100.00 267.00 to -14276 792 128000 26700 Line 588: Transformed -142.51 8.25 100.00 267.00 to -14251 792 128000 26700 Line 593: Transformed -142.26 8.25 100.00 267.00 to -14226 792 128000 26700 Line 598: Transformed -142.01 8.25 100.00 267.00 to -14201 792 128000 26700 Line 603: Transformed -141.68 8.25 100.00 267.00 to -14168 792 128000 26700 Line 608: Transformed -141.43 8.25 100.00 267.00 to -14143 792 128000 26700 Line 613: Transformed -141.18 8.25 100.00 267.00 to -14118 792 128000 26700 Line 618: Transformed -140.93 8.25 100.00 267.00 to -14093 792 128000 26700 Line 623: Transformed -140.68 8.25 100.00 267.00 to -14068 792 128000 26700 Line 628: Transformed -140.43 8.25 100.00 267.00 to -14043 792 128000 26700 Line 633: Transformed -140.18 8.25 100.00 267.00 to -14018 792 128000 26700 Line 638: Transformed -139.93 8.25 100.00 267.00 to -13993 792 128000 26700 Line 643: Transformed -139.68 8.25 100.00 267.00 to -13968 792 128000 26700 Line 648: Transformed -139.34 8.25 100.00 267.00 to -13934 792 128000 26700 Line 653: Transformed -139.09 8.25 100.00 267.00 to -13909 792 128000 26700 Line 658: Transformed -138.84 8.25 100.00 267.00 to -13884 792 128000 26700 Line 663: Transformed -138.59 8.25 100.00 267.00 to -13859 792 128000 26700 Line 668: Transformed -138.34 8.25 100.00 267.00 to -13834 792 128000 26700 Line 673: Transformed -138.09 8.25 100.00 267.00 to -13809 792 128000 26700 Line 678: Transformed -137.84 8.25 100.00 267.00 to -13784 792 128000 26700 Line 683: Transformed -137.59 8.25 100.00 267.00 to -13759 792 128000 26700 Line 688: Transformed -137.34 8.25 100.00 267.00 to -13734 792 128000 26700 Line 693: Transformed -137.00 8.25 100.00 267.00 to -13700 792 128000 26700 Line 702: Transformed -136.75 8.25 100.00 267.00 to -13675 792 128000 26700 Line 707: Transformed -136.50 8.25 100.00 267.00 to -13650 792 128000 26700 Line 712: Transformed -136.25 8.25 100.00 267.00 to -13625 792 128000 26700 Line 713: Transformed -136.00 8.25 100.00 267.00 to -13600 792 128000 26700 Line 718: Transformed -135.75 8.25 100.00 267.00 to -13575 792 128000 26700 Line 723: Transformed -135.50 8.25 100.00 267.00 to -13550 792 128000 26700 Line 728: Transformed -135.25 8.25 100.00 267.00 to -13525 792 128000 26700 Line 733: Transformed -135.00 8.25 100.00 267.00 to -13500 792 128000 26700 Line 738: Transformed -134.67 8.25 100.00 267.00 to -13467 792 128000 26700 Line 743: Transformed -134.42 8.25 100.00 267.00 to -13442 792 128000 26700 Line 748: Transformed -134.17 8.25 100.00 267.00 to -13417 792 128000 26700 Line 753: Transformed -133.92 8.25 100.00 267.00 to -13392 792 128000 26700 Line 758: Transformed -133.67 8.25 100.00 267.00 to -13367 792 128000 26700 Line 763: Transformed -133.42 8.25 100.00 267.00 to -13342 792 128000 26700 Line 768: Transformed -133.17 8.25 100.00 267.00 to -13317 792 128000 26700 Line 773: Transformed -132.92 8.25 100.00 267.00 to -13292 792 128000 26700 Line 778: Transformed -132.67 8.25 100.00 267.00 to -13267 792 128000 26700 Line 783: Transformed -132.33 8.25 100.00 267.00 to -13233 792 128000 26700 Line 788: Transformed -132.08 8.25 100.00 267.00 to -13208 792 128000 26700 Line 793: Transformed -131.83 8.25 100.00 267.00 to -13183 792 128000 26700 Line 798: Transformed -131.58 8.25 100.00 267.00 to -13158 792 128000 26700 Line 803: Transformed -131.33 8.25 100.00 267.00 to -13133 792 128000 26700 Line 808: Transformed -131.08 8.25 100.00 267.00 to -13108 792 128000 26700 Line 813: Transformed -130.83 8.25 100.00 267.00 to -13083 792 128000 26700 Line 818: Transformed -130.58 8.25 100.00 267.00 to -13058 792 128000 26700 Line 823: Transformed -130.33 8.25 100.00 267.00 to -13033 792 128000 26700 Line 828: Transformed -129.99 8.25 100.00 267.00 to -12999 792 128000 26700 Line 833: Transformed -129.74 8.25 100.00 267.00 to -12974 792 128000 26700 Line 838: Transformed -129.49 8.25 100.00 267.00 to -12949 792 128000 26700 Line 843: Transformed -129.24 8.25 100.00 267.00 to -12924 792 128000 26700 Line 848: Transformed -128.99 8.25 100.00 267.00 to -12899 792 128000 26700 Line 853: Transformed -128.74 8.25 100.00 267.00 to -12874 792 128000 26700 Line 858: Transformed -128.49 8.25 100.00 267.00 to -12849 792 128000 26700 Line 863: Transformed -128.24 8.25 100.00 267.00 to -12824 792 128000 26700 Line 868: Transformed -127.99 8.25 100.00 267.00 to -12799 792 128000 26700 Line 873: Transformed -127.66 8.25 100.00 267.00 to -12766 792 128000 26700 Line 878: Transformed -127.41 8.25 100.00 267.00 to -12741 792 128000 26700 Line 883: Transformed -127.16 8.25 100.00 267.00 to -12716 792 128000 26700 Line 888: Transformed -126.91 8.25 100.00 267.00 to -12691 792 128000 26700 Line 893: Transformed -126.66 8.25 100.00 267.00 to -12666 792 128000 26700 Line 898: Transformed -126.41 8.25 100.00 267.00 to -12641 792 128000 26700 Line 903: Transformed -126.16 8.25 100.00 267.00 to -12616 792 128000 26700 Line 908: Transformed -125.91 8.25 100.00 267.00 to -12591 792 128000 26700 Line 913: Transformed -125.66 8.25 100.00 267.00 to -12566 792 128000 26700 Line 918: Transformed -125.32 8.25 100.00 267.00 to -12532 792 128000 26700 Line 923: Transformed -125.07 8.25 100.00 267.00 to -12507 792 128000 26700 Line 928: Transformed -124.82 8.25 100.00 267.00 to -12482 792 128000 26700 Line 933: Transformed -124.57 8.25 100.00 267.00 to -12457 792 128000 26700 Line 938: Transformed -124.32 8.25 100.00 267.00 to -12432 792 128000 26700 Line 943: Transformed -124.07 8.25 100.00 267.00 to -12407 792 128000 26700 Line 948: Transformed -123.82 8.25 100.00 267.00 to -12382 792 128000 26700 Line 953: Transformed -123.57 8.25 100.00 267.00 to -12357 792 128000 26700 Line 958: Transformed -123.32 8.25 100.00 267.00 to -12332 792 128000 26700 Line 963: Transformed -122.99 8.25 100.00 267.00 to -12299 792 128000 26700 Line 968: Transformed -122.74 8.25 100.00 267.00 to -12274 792 128000 26700 Line 973: Transformed -122.49 8.25 100.00 267.00 to -12249 792 128000 26700 Line 978: Transformed -122.24 8.25 100.00 267.00 to -12224 792 128000 26700 Line 983: Transformed -121.99 8.25 100.00 267.00 to -12199 792 128000 26700 Line 988: Transformed -121.74 8.25 100.00 267.00 to -12174 792 128000 26700 Line 993: Transformed -121.49 8.25 100.00 267.00 to -12149 792 128000 26700 Line 998: Transformed -121.24 8.25 100.00 267.00 to -12124 792 128000 26700 Line 1003: Transformed -122.98 8.27 100.00 267.00 to -12298 794 128000 26700 -
@dc42 Any insight? This chart and attached M111 log show the commanded X position oscillates during this G03 movement.
G1 X-176.532 Y8.712 F1500;E0.00866 G3 X-122.991 Y8.714 I0.110 J713728.301 ;E2.11127 ;PROBLEMS START HERE G4 S4 G1 X-176.532 Y8.712 ;E0.00866 -
I looked at the code and everything is treated as IEEE single-precision floatingpoint numbers, so I wonder if your extremely large J value is getting improperly represented and is causing, well, something.
Your value of 713728.301 can only be represented as 713728.3125 which is off by 0.0115 I know that's a small amount, but I don't really know how it would affect the generation of the curve (the one that is basically a straight line)
Is there something in your post-processor that says "Hey, if the radius is greater than ZZZ, just use a G1 move instead of creating a G2 with a huge radius please." ?
I mean, J725868mm is nearly a half a mile away. To mix units.
Maybe you could try using exactly 713728.3125 as a test, or keep reducing that radius until the jumps start to go away? (If my theory is correct anyway)
Interesting problem.
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@alankilian I like the way you're thinking! Unfortunately I'm still seeing Issue #1 and Issue #2 with the 713728.3125 value (more on both #1 and #2 in a moment).
There is an option in the post-processor to limit the maximum arc radius. Currently it is set to... 1000000mm
It should have been obvious to anyone reading, but issue #1 and #2 are just different side effects of the same issue. #1 occurs with the 'troublesome' command at higher speeds, with #2 occurring at low speeds. At higher speeds we see the overshoot, and at lower speeds, we see the single-axis oscillation.
Post-processor wise, limiting the maximum arc radius to a reasonable value seems like a solid idea. For my own curiosity, I want to collect more data on these large radius moves.
