Stephen asked: |Is there any particular reason why you chose 2,400,000 for the servo and |traj periods? I'm sure it will work for these speeds (and it does |reduce the CPU load marginally), but it shouldn't be necessary to |lengthen these. Can you share your reason for changing them?
Stephen, In answer to your question: I spent a few hours doing the old "only change one thing at a time" routine and I found that as I brought base period below 10,000 even slightly, the display started to slow down and the cursor became "sticky". By 8000 it was freezing up the machine. I decided that even if it "worked" at 10000 a little margin wouldn't hurt as long as I could get the number of steps per second I needed. Hence 12,000 I juggled the servo and traj from a high of 5,000,000 down to 1,000,000. I was getting some real time errors at 1,000,000 and they seemed to go away at around 3,000,000 but as I went towards 5,000,000 I started getting following errors when I had the display (TK) in continuous mode but not in any of the incremental modes. When I lowered servo and traj periods down to 3,000,000 the following errors stopped. (note that I didn't say it stopped "because" I lowered it) Again a little margin Hence 2.5 but 2,400,000 is a nice multiple of 12,000 so why not use it since it was arbitrary anyway. In my trials I always left the traj and servo the same even though it's probably not necessary and I might try changing each independently but I don't know what would be the gain since it "seems" to be behaving pretty well now. Cecil ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
