Rob Jansen wrote: > I know this is probably my own fault for not having limit and home > switches (yet) > > But I keep getting headaches from the Axis behavior of the touch off > function in Axis. > When I move my zero position finder and then try to do a touch off > with 4mm to get the home coordinate, suddenly the OK button in the > touch off window becomes grayed out. > It works sometimes but not ever. Is there some kind of dependency on > previous homing sequences? > > having this problem I started to use the G92 in the MDI window. I > wanted to try this anyway because I want to automate this procedure > using a probe to prevent any future problems (I just crashed my $75 > LED homing sensor due to having the wrong increment set when moving ...). > It looks like this made the problem worse: I can't even do a normal > homing anymore after using G92. > A short example: > > I switch on the machine and do a normal homing using the home button, > now X=0. I do a touch off (using G92 X-4), do my milling and prepare > for a second job. When I now press the home button then X becomes -4 > (the value of the G92 command) > This looks OK but when I now move the X-axis 1 mm further and do a new > G92 X-4 command then pressing the home button sets X to -5. > > Some of my work involves a concatenation of multiple milling programs > (using absolute coordinates) where I placed a sequence like "G0 X100, > G92 X0" on two lines in between the different programs. in this way I > get multiple parts out of one sheet. > Things get worse now. When I stop in the middle of a program using > multiple G92 commands, the home position is not what I expect it to be > (i.e. the one defined by the last G92 command). > > Am I just misusing a feature here or is this something which is fixed > in a newer release? > > Regards, > > Rob >
H(o)i Rob, IIRC G92 works incremental. You can use G92.1 to 'reset' the coordinate system. Regards, Bas --- > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > 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 > ------------------------------------------------------------------------- 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
