On 04/11/2014 12:41 AM, Gene Heskett wrote: > The main reason I was concentrating on the limits, using > the same code, was that I had written a peck cycle wrapped > around a G33.1, which advanced half a turn per run in. I > had moved the code back away from the workpiece, basically > cutting air, and had noted that on some occasions, the > spindle became unlocked from Z with Z stopping while the > spindle ran on for 3 or 4 turns,
> And I haven't checked (I have to think about this stuff & > then go back & check) as to whether the soft limits move > with the touchoff or not. The soft limits are in machine coordinates. They should be established when you home the machine, and should not be altered by touchoff, G92 or anthing else that affects WORK offsets only. Now, unless somebody worked on it with this in mind, I could easily see how you could have a threading cycle that would exceed a machine limit (I guess that would be +Z) that might not be detected by the trajectory planner. The T.P. can't know how long the spindle will coast when powered off, so it could end up coasting backwards beyond the machine limit, if the start of the thread was just barely below the +Z limit. Jon ------------------------------------------------------------------------------ Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project now. Try Jenkins in the cloud. http://p.sf.net/sfu/13600_Cloudbees _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
