I'd describe them like this: G61 Exact path mode, movement exactly as programed. Moves will slow or stop as needed to reach every programed point. If two sequential moves are exactly co-linear movement will not stop. G61.1 Exact stop mode, movement will stop at the end of each programed segment.
----- Original Message ----- From: "John Thornton" <j...@gnipsel.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Wednesday, October 19, 2016 2:36:33 PM Subject: Re: [Emc-users] Cycle time discussion How should the manual for 2.7 read? I'll fix it... JT On 10/18/2016 12:29 PM, Robert Ellenberg wrote: > The discrepancy is likely because the behavior changed in 2.7. In 2.6 and > older, both G61 modes were identical. In 2.7, we added the exact path vs > exact stop distinction (since the new TP could do it). > > On Tue, Oct 18, 2016, 12:15 PM Nicklas Karlsson < > nicklas.karlsso...@gmail.com> wrote: > >> There seems to be small disreptancy in manual for at least 2.6: >> G61 - exact path mode. G61 visits the programmed point exactly, even >> though that means temporarily coming to a complete stop. >> G61.1 - exact stop mode. Same as G61 >> >> G61 do not need to stop although it might happen because otherwise it fail >> to reach exact point. G61.1 come to a complete halt at point. >> >> I say to change the manual would make sense. >> >> >> >> On Tue, 18 Oct 2016 11:27:34 -0400 (EDT) >> "Todd Zuercher" <zuerc...@embarqmail.com> wrote: >> >>> Yes, a quick test seems to show that for co-linear points G61 doesn't >> stop but G61.1 does. Maybe the docs should be adjusted to reflect that. >>> ----- Original Message ----- >>> From: "John Thornton" <j...@gnipsel.com> >>> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net >>> >>> Sent: Tuesday, October 18, 2016 10:56:56 AM >>> Subject: Re: [Emc-users] Cycle time discussion >>> >>> Looks like G61.1 stops at every end point and G61 only visits each end >>> point but may stop if needed. Could also be incorrect descriptions of >>> them... >>> >>> JT >>> >>> On 10/18/2016 9:17 AM, Todd Zuercher wrote: >>>> Stupid question, why do we even have a G61.1 mode? Is it in anyway >> different from plain G61? >>>> ----- Original Message ----- >>>> From: "John Thornton" <j...@gnipsel.com> >>>> To: "Enhanced Machine Controller (EMC)" < >> emc-users@lists.sourceforge.net> >>>> Sent: Tuesday, October 18, 2016 9:21:29 AM >>>> Subject: Re: [Emc-users] Cycle time discussion >>>> >>>> That depends on you, if you do nothing you get G64 >>>> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64 >>>> >>>> If you set G64 P <Q> you get something else >>>> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64 >>>> >>>> If you set G61 or G61.1 you get something different >>>> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g61-g61.1 >>>> >>>> JT >>>> >>>> On 10/18/2016 7:48 AM, Erik Friesen wrote: >>>>> I have been watching my vintage 1996 haas, and have begun to notice >>>>> all the non cutting times, pauses, etc. It really seems that non >>>>> rapid, between rapid, and other slow motions are overlooked time >>>>> costs. Note the non machining pauses on this DM-1 >>>>> http://www.haascnc.com/video.asp?mode=demos&VidID=c5-XXw0gLxg >>>>> >>>>> I see this on my machine too, rapids don't blend, so G0Z1 followed by >>>>> G0Z5 will always have a noticeable pause. >>>>> >>>>> How does lcnc handle rapids in this scenario? >>>>> >>>>> >> ------------------------------------------------------------------------------ >>>>> Check out the vibrant tech community on one of the world's most >>>>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >>>>> _______________________________________________ >>>>> Emc-users mailing list >>>>> Emc-users@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>> >> ------------------------------------------------------------------------------ >>>> Check out the vibrant tech community on one of the world's most >>>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >>>> _______________________________________________ >>>> Emc-users mailing list >>>> Emc-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>> >>>> >> ------------------------------------------------------------------------------ >>>> Check out the vibrant tech community on one of the world's most >>>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >>>> _______________________________________________ >>>> Emc-users mailing list >>>> Emc-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> >> ------------------------------------------------------------------------------ >>> Check out the vibrant tech community on one of the world's most >>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> >> ------------------------------------------------------------------------------ >>> Check out the vibrant tech community on one of the world's most >>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> -- >> Nicklas Karlsson <nicklas.karlsso...@gmail.com> >> >> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
