Jason Cox wrote: > Jeff, > Only problem is see is that if the homing direction is not towards > the home position the axis will travel until it hits the hard stop. You > still need to have the limits to stop damage. > Jason
True. Homing to a limit is a calculated risk, one that is more likely to be taken by someone with a mill-drill or mini-mill than a large machining center. Using a single input pin for both high and low limits, and for the limits of multiple axes, is a similar calculated risk. The ultimate decision lies with the machine builder. Jeff's proposed solution (a HAL pin that is true when homing) can address the problem though. Assuming you have high and low limits wired separately, and are homing to the low one, the external logic (either HAL logic gates, or classicladder) can ignore only the one you are homing to, and keep the other one(s) active. I'm in the process of making the change, it will be in CVS soon, and in EMC-2.1.2 when that is released in a few weeks or so. Regards, John Kasunich ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
