I believe you're correct, my logs show the following: > Feb 17 23:45:18 beaglebone rtapi:0: 4:rtapi_app:8608:user line can't have >> zero length! xyz start = >> -9.265000000000e+00,4.957300000000e+01,3.800000000000e-01, end = >> -9.265000000000e+00,4.957300000000e+01,3.800000000000e-01 > > Feb 17 23:45:18 beaglebone rtapi:0: 4:rtapi_app:8608:user failed to create >> line id 5517, zero-length segment > > > On Saturday, February 25, 2017 at 7:08:03 AM UTC-8, Schooner wrote: > > > On 25/02/17 11:47, schoo...@btinternet.com <javascript:> wrote: > > > On 25/02/17 07:55, icecube45 wrote: > > It's seemingly a different line each time I run the file, this time it was > line 20462, which is either the middle of > >> G1 X-9.794 Y-69.769 A29.4549 >> >> G1 X-10.971 Y-71.809 A29.5489 >> >> G1 X-13.951 Y-71.809 A29.6678 >> >> or the middle of > >> > > G1 X31.776 Y-64.609 A48.9986 > > G1 X34.755 Y-64.609 A49.1175 > > G1 X35.933 Y-62.569 A49.2115 > > > defendant on if comments count as lines or not.. > Nothing seems out of the ordinary here, which is why I'm so confused. > > > The error is defined as TP_ERR_ZERO_LENGTH > > https://github.com/machinekit/machinekit/blob/master/src/emc/tp/tp_types.h#L61 > > The trajectory planner is dark magic with which I have no particular > familiarity. > It was certainly not developed to squirt plastic in tens of thousands of > extremely small moves. > > My only guess might be that depending upon what blending settings you > have, it may not recognise a commanded move(s) as > any sort of move at all. > But I could be completely wrong. > > Hopefully Robert or someone with more knowledge will chime in. > > > Just to flesh this out a bit > > This is the code which is throwing the error > https://github.com/machinekit/machinekit/blob/master/src/emc/tp/tp.c#L1937 > > if (tc.target < TP_POS_EPSILON) { > rtapi_print_msg(RTAPI_MSG_DBG,"failed to create line id %d, > zero-length segment\n",tp->nextId); > return TP_ERR_ZERO_LENGTH; > } > > If you switched on debugging, you should see this message in > /var/log/linuxcnc.log > > This is why I am surmising that an extremely small move, with some > rounding down from the tp settings, > could be causing the error. > > TP_POS_EPSILON is defined here > > https://github.com/machinekit/machinekit/blob/master/src/emc/tp/tp_types.h#L44 > as 1e-12 ( which is 10 to -12 or 0.000 000 000 001 !! ) > > Why this is occurring I don't know, but you can switch on debugging and > confirm that this is indeed the bit causing it. > > You can also switch off blending (G64 P0) or adjust the blend tolerance > settings ( G64 Pn.nn ) and see if it improves. > > > > On Friday, February 24, 2017 at 4:47:47 AM UTC-8, Schooner wrote: >> >> >> On 24/02/17 12:03, icecube45 wrote: >> >> Does anyone have any idea what this error code is? It occasionally >> happens, yet I can't isolate what is actually causing it, nor what the -7 >> error code actually means. >> >> >> >> https://github.com/machinekit/machinekit/blob/master/src/emc/motion/command.c#L953 >> >> It means that it does not like one of the parameters to a linear move. >> >> EMCMOT_COMMAND_BAD_EXEC means there was an error trying to initiate the >> command. >> This would suggest the command was valid syntax but the acc, vel, move >> extent or some other factor was not. >> >> Unless you can tell us what the move asked for was, it is impossible to >> guess. >> >> line xxxx should be a number, it may not strictly equate to the line >> number but should be a number non the less. >> >> >> >> I'd appreciate any advice on how to fix this error - it's popping up >> randomly and stopping my prints. >> >> For reference, I'm on a BeBoPr++ lineardelta configuration. >> -- >> website: http://www.machinekit.io blog: http://blog.machinekit.io >> github: https://github.com/machinekit >> --- >> You received this message because you are subscribed to the Google Groups >> "Machinekit" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to machinekit+...@googlegroups.com. >> Visit this group at https://groups.google.com/group/machinekit. >> For more options, visit https://groups.google.com/d/optout. >> >> >> -- > website: http://www.machinekit.io blog: http://blog.machinekit.io github: > https://github.com/machinekit > --- > You received this message because you are subscribed to the Google Groups > "Machinekit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to machinekit+...@googlegroups.com <javascript:>. > Visit this group at https://groups.google.com/group/machinekit. > For more options, visit https://groups.google.com/d/optout. > > > -- > website: http://www.machinekit.io blog: http://blog.machinekit.io github: > https://github.com/machinekit > --- > You received this message because you are subscribed to the Google Groups > "Machinekit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to machinekit+...@googlegroups.com <javascript:>. > Visit this group at https://groups.google.com/group/machinekit. > For more options, visit https://groups.google.com/d/optout. > > >
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