On 18.05.12 23:09, Jon Elson wrote: > The description in the user manual is almost completely incomprehensible. > G10 L20 makes a little bit of sense, G10 L2 makes no sense at all.
The new web page: http://www.linuxcnc.org/docs/devel/html/gcode/gcode.html#_g10_l2_set_coordinate_system_a_id_sec_g10_l2_a does seem to get there though, since "(in terms of the not offset machine coordinate system)" seems unambiguous, i.e absolute w.r.t. machine origin. > Everything has to be referenced to the machine coordinate system at > the lowest level. I have no idea what the "origin" means. Is it a > direct offset added to the machine coordinate system? Hmm, FWIW I take it to be 0,0,0 in the machine coordinate system, otherwise it's not an origin, AFAICT. ;-) > Not at all clear from the description. But, I never even want to know > about the machine coordinate system. The only thing that makes sense > when setting up is where the machine is NOW, because I can measure > from that. Um ... that's always been my problem, when reading the older documentation. i.e. "where the machine is NOW" w.r.t. what? Yes, touch off from the workpiece, and those other references become moot. It scares me that coordinate offsets could be cumulative. Coordinate offsets (workspaces) should not nest, I believe. I have not read anything in the doco to say that they do. Erik -- In the bathtub of history the truth is harder to hold than the soap, and much more difficult to find." - Terry Pratchett ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
