Earlier today I ran across the dreaded "Joint 0 on limit switch error". When I looked it up online I did not find a solution. Playing around a little I did find a trivial solution, and wish to also suggest/request a change in the UI functionality. The functionality suggestion might already been implemented in a later version of the code, but I will not be able to update the system for some time to come, so I am stuck with it. Anyway, for the error:
As noted in several posts, the error is caused by the system starting up with one or more limit switches triggered. In some configurations (like mine which have both limits wired in series, and one considered HOME), LCNC does not know how to back out of the limit and it needs the user to jog away from the limit. The fundamental problem is that when the home/limit is configured so that when you reach the limit AND do not back off, then the limit is still engaged. In order to get it to work correctly you need to set the limit position, AND set the home position some small increment away from it (I chose 0.25"). When this is done, the homeing routine hits all the limits in order and then backs away by the offset. The change in functionality suggestion is this -- when this error is triggered, allow the use to jog the machine. Currently (in LCNC-2.5.0), if the UI comes up with this error it blocks all interaction including jogs. I think something needs to change here. As I said, it may have already been changed in more recent version of the UI, but it will be some time before I can upgrade the entire system. Also I wanted to document what I found for posterity... Thanks and best regards, EBo -- ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135031&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
