Dave Engvall wrote: ay have to try something else. Will check for a menu. > > After the comments (JMK) this afternoon about problems with the Mazak > at Galesburg I > tried running a program on my machine while doing other things. > The program was a pretty generic mill a bunch of identical blocks, > first roughing at 4.5 ipm > and the finishing at more like 12 ipm. Meanwhile I fired up the web > browser since that makes the numbers on > my latency test increase about as fast and anything I can do. Didn't > even get a bump; even on the rapids between > blocks. So while my latency numbers are really horrible, i.e. in the > 96K range, I can't demonstrate any degradation > in the performance of the mill. >
96K is NOT horrible at all on a servo machine. It is step generation that requires latencies of a few microseconds. Servo machines with hardware encoder counters and DACs only need to run EMC's servo thread, at 1mS. Latencies of a hundred microseconds aren't going to seriously hurt things. The "bumps" at Galesburg were the result of latencies of several milliseconds, not a hundred microseconds or so. Regards, John Kasunich ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
