On 1/24/2012 4:52 PM, John Prentice wrote: > On one hand I think it is unusual CNC behaviour in threading (so > possible difficulties for CAM users without a special postprocessor). John:
Since I haven't had the pleasure of using serious CAM software I don't have first-hand experience with their postprocessors, but my inclination is to say, sure, a LinuxCNC-flavored postprocessor is required if one wants to stray off the RS274D reservation (I wish I knew enough about ISO 6983 and DIN 66025 to know if they can be mentioned in the same breath). There was the NCMS project to define the Next Generation Controller that developed the variant called RS274/NGC and there was the NIST project to implement this variant, one result of which was Tom Kramer's G-code interpreter. As I understand it, adjustments had to be made where the NGC publications were ambiguous so the G-code definitions in Tom's paper were already a dialect of a variant and since then we've added to/modified the language some more as LinuxCNC evolved. It may be annoying to know LinuxCNC works best with G-code programs tailored to it, but isn't this true also for other controllers? I looked up Haas Lathe on the BobCAM site and found a bunch of different post-processor variations (Haas-HL, Haas-SL, Haas-TL, etc.) some with up to 6 released versions. BobCAM lists 35 makes of lathe controller (including "generic"). Yikes. Just my 2 cents worth. Regards, Kent ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
