On Wed, Aug 8, 2018, 12:59 PM Todd Zuercher <[email protected]> wrote:
> If the behavior is anything like the Z inhibit button on all the Fanuc > machines I've worked with it is a horribly dangerous device. On the Fanuc > machines (modern newer ones with absolute encoders included) it is the > equivalent of disconnecting the outputs of the stepgen and nothing else. > When the button is released if the commanded Z position isn't the same as > when it was pressed, the Z absolute position is shifted by the difference > and can't be corrected without cycling the control power (rehoming doesn't > even fix it). And since most of our Fanuc machines use tool change > routines that include Z axis moves, tool changes can't be done with the Z > inhibit active, pretty much making it completely useless. > > Mazaks have similar behavior when feed held and shifted in handle. When > placed back in auto move it will start from where it last was in auto mode > and not reference the handle move off , this was the source of my biggest > screw up ever , I ran a criterion millionths boring head straight into a > renishaw toolsetter , killing both of them with 1200 ipm rapid. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
