I (now) understand the other side of the soft limit issue. I'd suggest though, that soft limits is the wrong way to save the table on the milling machine. I might rename soft limit to safety limit. You should NEVER hit the limit switch because if you do it at high speed, you can run right over it. The safety limit would prevent hitting the limit switch.
I would then add a new soft limit that is soft in the sense that the user can move it to wherever he wants. He could replace the tool, touch the table, and then push a button saying set Z- soft limit. Similarly for Z+, X+, X-, Y+,Y-. That would be a some more work for the developers, but I think it would provide the desired functionality. Of course, one could imagine a facility that let the user manually run the tool around all of the clamps, chucks, fixtures, etc and set protective limits for them. Ken Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 ----- Original Message ----- From: "Chris Radek" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Friday, May 02, 2008 10:02 AM Subject: Re: [Emc-users] "Un-Homing" an axis > On Fri, May 02, 2008 at 08:12:14AM -0400, Kenneth Lerman wrote: >> For additional protection though, >> overriding limits should allow jogging only *away* from the limit that >> has >> been hit. > > This is currently how override limits (for jogging off a limit > switch) works, when the right and left limit signals are separate. > > If both ends are tied to one input, of course EMC can't tell which > switch it's on, so it must allow jogging both ways. > > > > Here is some back-and-forth about this. You can see I have argued > with myself about it over three years. That's pretty funny. > > http://sourceforge.net/tracker/index.php?func=detail&aid=1491243&group_id=6744&atid=356744 > > I do think the (not yet released) ability to unhome is an acceptable > fix for these problems. > > Chris > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
