Danny, Sounds as though you are actually doing a touch off instead of homing. These two often get confused. Homing should happen with switches that are mounted on the machine in fixed positions. When you home the machine it goes to these switches to determine the home position of the machine. The home position is the base point for the physical limits of the machine and the soft limits are determined from there.
Touch off is done to determine the location of a workpiece in the machine workspace. Touch off sets the relative coordinates of a Work Coordinate System (WCS). Touch plates are typically used for touch off and not homing. If you want to put the dead man switch on this you would need to integrate it in the probing routine or add the dead man switch in series with the touch probe. If you did the latter, then releasing the dead man switch would indicate the probe touched and it would lift back up (or potentially lift up and probe down again depending on your probing routine). Jim On 4/13/2016 11:25 AM, dan...@austin.rr.com wrote: > I have an XHC-HB04 wireless MPG that doesn't "quite" work yet. While working > on it, I had a thought. > > Homing is one of the riskier functions. You could Z-down to a touch plate and > not realize the plate's not underneath it at all and go scrambling to stop > it. Having automated process buttons that take command away from the > operator are inherently risky. > > My idea would be that you would have to HOLD DOWN the Home Z button for the > process to continue. If you release the button before it's complete, the > axis just stops and it forgets about homing. > > This would tend to direct your attention to what's happening and if things go > wrong you just let go. Also if you were to accidentally press the Home Z > button, nothing serious would happen. It would bump down like 1/4 in and > stop when you realized you pressed the wrong button. > > What might it take to implement such a thing? I do have trivkins for the > gantry, and the homing is already a somewhat complicated special-case. > > Danny > > ------------------------------------------------------------------------------ > Find and fix application performance issues faster with Applications Manager > Applications Manager provides deep performance insights into multiple tiers of > your business applications. It resolves application problems quickly and > reduces your MTTR. Get your free trial! > https://ad.doubleclick.net/ddm/clk/302982198;130105516;z > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
