G28 goes to a predefined position (home as defined in parameters 5156-5166).
To make G28 go to 0,0,100 you must home the machine there which will become 0,0,0. Then a G28Z0 with no space will home the Z axis only. The space between the G28 and the axis must call up an undocumented feature... John On 22 Jun 2008 at 19:08, Dirk wrote: > > Hi all, well, just deleted my question. When double checking all the > facts, reproducing the problems, I got some clue about what was going > wrong. But there is still 1 thing unclear. My postprocessor, NX5, made > with postbuilder, automatically adds a G28 at the start of the > program. Since I have a very slow z-axis, which can also get > dangerously close to the workpiece if it hase a tool in it, I don't > want the G28 to go to 0,0,0. I configured emc so that a homing > sequence will put the x and y stage at 10,10 and the z-stage at 180. > Can I get emc to use G28 to go these coordinates? Or do I have to > remove the G28 from the postprocessor and put G00 X10 Y10 Z180 in it? > It seems that G28 Z100, for instance, first goes to 0,0,0 and than > goes to 0,0,100. > > I love this stuff, but there is so much to figure out. Especially > since I have to configure a postprocessor and a cnc system at the same > time. I am never sure which one is misconfigured. > > Dirk ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
