> We have the squaring part working. We send a simultaneous signal to each > Granite drive and it homes to a hard stop and comes off a fixed amount. It is > repeatable to no worse than 0.002, often better (lte 0.001).
You can do exactly the same thing with EMC. If you did it with EMC, then you can use the index pulses to home and square. This would be repeatable to the nearest encoder tick. The only danger is if one axis hits the index pulse almost one full motor revolution before the other, and one motor revolution moves than the 3/4" racking limit. This set up is the last thing I need to do on my gantry. Hopefully I'll have time this weekend. > Then we want to have EMC home just to the index on just one of the two > joints (don't really care which one) but it must also do it while coordinating > the opposite joint. > > The reason is that then that index location would have even better > repeatability. ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
