I think you can achieve this with a bit of hal logic. Using an and2 and a not connect of pin joint.2.homed to the not, then connect the output of the not and the limit switch to the and2, then connect the output of the and2 to joint.2.pos-lim-sw-in. Then after the machine is homed the limit switch would be ignored.
You will want to try to make sure that the machine is below the limit when ever you unhome or turn off the machine. But it wouldn't be too hard to recover from it. Jog down till you hit the limit, click ignore limits, re-enable the machine then continue to jog down. Just don't ever make the mistake of jogging up or starting to home when you're on the wrong side of the switch. That wouldn't be a problem though if your switch is always on above the trigger point. ----- Original Message ----- From: [email protected] To: [email protected] Sent: Wednesday, February 8, 2017 12:34:17 PM Subject: [Emc-users] Using a homing switch as a limit when not homed I don't have a physical stop on my Z axis, putting one in would be a PITA. The drive is exceptionally strong and it would be problematic to stop the axis that way. If you're an idiot and jog it that way prior to homing, you can dismount the axis. There is a homing switch at Z+. It sounds desirable to halt + movement when that switch is tripped, AND not homed, AND not in the actual homing sequence. But NOT stop - movement, otherwise you'd jog it upwards, get it stuck, and no way to jog down. How difficult would it be to do that? Danny ------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------ 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
