On Wed, Aug 10, 2011 at 06:22:38AM -0700, charles green wrote: > if i went home at a velocity of zero, i would only ever arrive at home if i > was already at home, in which case why would i go home in the first place?? > > [many repeats snipped]
The docs page http://www.linuxcnc.org/docs/2.4/html/config_ini_homing.html describes the different ways that velocities of zero have special meanings. They are used to select between the many types of homing motion needed to support a wide variety of machines. Note the table in 0.1.2 and the beginning of the HOME_SEARCH_VEL section 0.1.3.1 where it says A value of zero causes EMC to assume that there is no home switch; the search stage of homing is skipped. As you say, it's silly to actually try to go somewhere at zero velocity. That's why the homing process uses those special cases to know which steps to skip. It seems like you are embarrassed for having asked for help without first finding the relevant documentation. Don't be - it's very normal and many, many new users have been in the same situation. There are lots of docs and often a pointer to the right page or section is all a new guy needs. No need to go to all the effort to spin it as a gotcha or a trap because you didn't guess right at first. Just ask, no problem. ------------------------------------------------------------------------------ uberSVN's rich system and user administration capabilities and model configuration take the hassle out of deploying and managing Subversion and the tools developers use with it. Learn more about uberSVN and get a free download at: http://p.sf.net/sfu/wandisco-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
