On 1 November 2017 at 23:25, Eric H. Johnson <[email protected]> wrote:
> The problem is in the A axis. It seems to be > losing encoder counts at very low speed, but not otherwise. It took a bit to > track down because when I initially had it moving multiple rotations I could > not get any errors running A by itself. Running with a feed rate in excess > of 20000 (Degs per min), resulted in no errors. Slowing down to 10000 > started to show a very small amount of error, and from 5000 on down the > error was very pronounced. I think that this might be a floating GND or a half-disconnected differential signal. My thinking is that at high pulse rates you get AC coupling and the data gets through, but at low pulse rates the coupling breaks down. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
