We are running Linuxcnc 2.7.4 on our plasma machine. Today during the class on the machine the backplot started jumping around. See videos below. This happens after we load the file, move over the part, Touch Off X,Y and then click the first view icon in Axis (Z). Has anyone seen the backplot behave this way before? I ran this file under the Axis sim configuration and it behaves the same way. It is just this file (see gcode below), none of the other .nc files we have behave this way. Also, this just started happening today, it has not done this in the several weeks before this since updating to Wheezy/2.7.4.
Any ideas? -Tom https://vimeo.com/156770294 https://vimeo.com/156770295 https://vimeo.com/156770292 <https://vimeo.com/156770292> N0000 (Filename: MW-BottleOpen-v6.ngc) N0010 (Post processor: MakerWorksPlasmaCutter.scpost) N0020 (***WARNING*** Post processor used) N0030 (assumes THC for Z movement) N0040 (CODE CONTAINS NO Z MOVEMENTS) N0050 (Date: 12/19/2012) N0060 G20 (Units: Inches) N0070 G90 G40 G64 P0.005 N0080 F1 N0090 S500 N0100 M120 N0110 (Part: MW-BottleOpen-v5) N0120 (Process: Outside Offset, Inside, T1: MakerWorksPlasmaCutter) N0130 G00 X1.7962 Y0.6557 N0140 M03 N0150 G04 P0.4 N0160 G02 X1.7131 Y0.6915 I-0.0236 J0.0595 f85.0 N0170 G01 X1.6371 Y0.8827 f85.0 N0180 X1.6789 Y0.8908 N0190 X1.7402 Y0.7304 N0200 G03 X1.8175 Y0.7440 I0.0374 J0.0143 N0210 G01 X1.8205 Y0.9183 N0220 X1.8806 Y0.9300 N0230 X1.9470 Y0.7685 N0240 G03 X2.0239 Y0.7845 I0.0370 J0.0152 N0250 G01 X2.0207 Y0.9570 N0260 X2.0619 Y0.9651 N0270 X2.0624 Y0.5375 N0280 X2.0113 Y0.5275 N0290 X1.9282 Y0.7237 N0300 G03 X1.8513 Y0.7087 I-0.0368 J-0.0156 N0310 G01 X1.8477 Y0.4958 N0320 X1.7950 Y0.4855 N0330 X1.7131 Y0.6915 N0340 M05 N0350 G00 X0.7799 Y0.6912 N0360 M03 N0370 G04 P0.4 N0380 G02 X0.7106 Y0.6329 I-0.0638 J0.0055 N0390 G03 X0.5616 Y0.6403 I-0.1780 J-2.0710 N0400 X0.2693 Y0.6220 I-0.0146 J-2.1141 N0410 G01 X0.2685 Y0.6219 N0420 X0.1678 Y0.6066 N0430 G02 X0.1795 Y0.6503 I0.2472 J-0.0428 N0440 X0.2267 Y0.7216 I0.1910 J-0.0751 N0450 G01 X0.2408 Y0.7348 N0460 G02 X0.5562 Y0.8570 I0.3652 J-0.4745 N0470 G03 X0.5585 Y0.8573 I-0.0033 J0.0399 N0480 G01 X0.7034 Y0.8778 N0490 X0.7816 Y0.8874 N0500 X0.8492 Y0.8946 N0510 X0.9015 Y0.8991 N0520 Y0.6075 N0530 G03 X0.7106 Y0.6329 I-0.3689 J-2.0456 N0540 M05 N0550 G00 X2.5213 Y0.6125 N0560 M03 N0570 G04 P0.4 N0580 G02 X2.4545 Y0.5514 I-0.0639 J0.0028 N0590 G03 X2.2948 Y0.5554 I-0.1875 J-4.2415 N0600 G01 X2.2948 Y0.9045 N0610 X2.3076 Y0.9036 N0620 X2.3609 Y0.8981 N0630 X2.5724 Y0.8725 N0640 X2.6389 Y0.8631 N0650 X2.6956 Y0.8540 N0660 X2.7452 Y0.8448 N0670 X2.7463 Y0.8446 N0680 G02 X2.9341 Y0.7860 I-0.1051 J-0.6668 N0690 X3.0578 Y0.6898 I-0.4015 J-0.6444 N0700 X3.1609 Y0.5424 I-0.3007 J-0.3200 N0710 G01 X3.1646 Y0.5320 N0720 X3.1688 Y0.5167 N0730 G02 X3.1751 Y0.4692 I-0.1656 J-0.0463 N0740 G01 X3.1632 Y0.4695 N0750 X3.1365 Y0.4718 N0760 X3.0995 Y0.4762 N0770 X3.0522 Y0.4832 N0780 X2.9981 Y0.4921 N0790 G03 X2.4545 Y0.5514 I-0.7310 J-4.1823 N0800 M05 N0810 G00 X1.3863 Y0.7472 N0820 M03 N0830 G04 P0.4 N0840 G02 X1.4696 Y0.7119 I0.0240 J-0.0593 N0850 G01 X1.5476 Y0.5189 N0860 X1.5064 Y0.5110 N0870 X1.4447 Y0.6721 N0880 G03 X1.3674 Y0.6580 I-0.0374 J-0.0143 N0890 G01 X1.3665 Y0.4838 N0900 X1.3061 Y0.4720 N0910 X1.2383 Y0.6322 N0920 G03 X1.1615 Y0.6159 I-0.0368 J-0.0156 N0930 G01 X1.1646 Y0.4445 N0940 X1.1224 Y0.4363 N0950 X1.1203 Y0.8636 N0960 X1.1732 Y0.8738 N0970 X1.2563 Y0.6773 N0980 G03 X1.3331 Y0.6922 I0.0368 J0.0156 N0990 G01 X1.3367 Y0.9058 N1000 X1.3874 Y0.9156 N1010 X1.4696 Y0.7119 N1020 M05 N1030 G00 X0.5238 Y0.2526 N1040 M03 N1050 G04 P0.4 N1060 G02 X0.6090 Y0.2219 I0.0273 J-0.0579 N1070 G01 X0.6408 Y0.1544 N1080 X0.6597 Y0.1143 N1090 X0.6911 Y0.0366 N1100 G03 X0.6923 Y0.0338 I0.0371 J0.0150 N1110 G01 X0.7011 Y0.0161 N1120 G03 X0.7033 Y0.0123 I0.0358 J0.0178 N1130 G01 X0.7119 Y-0.0012 N1140 G03 X0.7169 Y-0.0074 I0.0337 J0.0216 N1150 G01 X0.7188 Y-0.0094 N1160 G03 X0.7386 Y-0.0206 I0.0287 J0.0279 N1170 G01 X0.7511 Y-0.0234 N1180 G03 X0.7563 Y-0.0243 I0.0089 J0.0390 N1190 G01 X0.8105 Y-0.0293 N1200 X0.8120 Y-0.0294 N1210 G03 X1.2224 Y-0.0387 I0.3454 J6.1906 N1220 G01 X1.2953 Y-0.0375 N1230 X1.2961 N1240 X1.3530 Y-0.0354 N1250 X1.3540 N1260 X1.3960 Y-0.0328 N1270 X1.3975 Y-0.0327 N1280 X1.4266 Y-0.0298 N1290 G03 X1.4288 Y-0.0295 I-0.0039 J0.0398 N1300 G01 X1.4477 Y-0.0266 N1310 G03 X1.4512 Y-0.0259 I-0.0061 J0.0395 N1320 G01 X1.4624 Y-0.0231 N1330 G03 X1.4684 Y-0.0211 I-0.0096 J0.0388 N1340 G01 X1.4743 Y-0.0186 N1350 G03 X1.4826 Y-0.0139 I-0.0156 J0.0368 N1360 G01 X1.5138 Y0.0093 N1370 G03 X1.5164 Y0.0114 I-0.0238 J0.0321 N1380 G01 X1.5351 Y0.0278 N1390 G03 X1.5379 Y0.0306 I-0.0264 J0.0300 N1400 G01 X1.6476 Y0.1483 N1410 G02 X1.7886 Y0.2584 I0.4049 J-0.3733 N1420 G01 X1.8125 Y0.2705 N1430 G02 X2.2395 Y0.3502 I0.3942 J-0.9280 N1440 G01 X2.2413 Y0.3502 N1450 G02 X2.8890 Y0.3022 I0.0482 J-3.7421 N1460 G01 X3.0740 Y0.2728 N1470 G03 X3.2137 Y0.2661 I0.0976 J0.5703 N1480 X3.3451 Y0.3425 I-0.0112 J0.1705 N1490 G01 X3.3455 Y0.3431 N1500 G03 X3.3768 Y0.4273 I-0.1827 J0.1159 N1510 X3.3763 Y0.5277 I-0.3110 J0.0485 N1520 X3.3430 Y0.6383 I-0.4326 J-0.0699 N1530 X3.2760 Y0.7515 I-0.5292 J-0.2369 N1540 X3.1753 Y0.8607 I-0.5980 J-0.4506 N1550 X3.0402 Y0.9614 I-0.6383 J-0.7153 N1560 X3.0385 Y0.9624 I-0.0210 J-0.0340 N1570 G01 X3.0184 Y0.9734 N1580 G03 X3.0160 Y0.9746 I-0.0192 J-0.0351 N1590 G01 X2.9933 Y0.9852 N1600 X2.9915 Y0.9859 N1610 G03 X2.7999 Y1.0423 I-0.3712 J-0.9078 N1620 X2.4536 Y1.0921 I-0.6162 J-3.0561 N1630 X1.0521 Y1.1104 I-0.8300 J-9.9192 N1640 X0.5711 Y1.0664 I0.3114 J-6.0609 N1650 X0.1171 Y0.8986 I0.0643 J-0.8722 N1660 G01 X0.1156 Y0.8975 N1670 G03 X-0.0011 Y0.7492 I0.2692 J-0.3319 N1680 G01 X-0.0013 Y0.7487 N1690 G03 X-0.0399 Y0.5921 I0.3903 J-0.1793 N1700 X-0.0305 Y0.4274 I0.7421 J-0.0400 N1710 G01 X-0.0136 Y0.3285 N1720 G02 X-0.0917 Y0.3951 I-0.0789 J-0.0134 N1730 G01 X0.0086 Y0.3941 N1740 X0.0858 Y0.3934 N1750 X0.0875 N1760 X0.1057 Y0.3939 N1770 G03 X0.1096 Y0.3943 I-0.0012 J0.0400 N1780 G01 X0.2216 Y0.4086 N1790 G02 X0.4991 Y0.4258 I0.3114 J-2.7878 N1800 X0.8267 Y0.4003 I0.0303 J-1.7325 N1810 G03 X0.8297 Y0.3999 I0.0069 J0.0394 N1820 G02 X0.9309 Y0.3687 I-0.0259 J-0.2637 N1830 X0.9559 Y0.3383 I-0.0353 J-0.0545 N1840 G01 X0.9562 Y0.3376 N1850 G02 X0.9505 Y0.2731 I-0.0639 J-0.0268 N1860 G01 X0.9446 Y0.2661 N1870 X0.9372 Y0.2589 N1880 X0.9275 Y0.2512 N1890 G02 X0.8496 Y0.2178 I-0.1266 J0.1875 N1900 G01 X0.8489 Y0.2176 N1910 G02 X0.7284 Y0.2064 I-0.0985 J0.4067 N1920 G01 X0.6882 Y0.2102 N1930 X0.6828 Y0.2110 N1940 X0.6090 Y0.2219 N1950 M05 N1960 M121 M05 N1970 G0 G53 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