Rob, Have you tried adjusting FError and Min_FError? You can increase FError by quite a bit, say 100 or higher if necessary. In my case that got rid of most of the following errors. The one instance I would still get them is in a sequence of G0 moves, such as retract, move, plunge (I am using a laser, so I can get away with it <g>). Between the move and the plunge, I would occasionally get following errors. If you get these, then increase Min_FError until they go away.
Regards, Eric the past week(s) I have been working on getting my hostmot2 system running with the Mesa 5i20 card and stepper motors. Up to a certain point this is a success. But there still is this problem with joint following errors - whatever I try I keep having joint following errors. I tried different values for all kinds of parameters but things only seem to work reliable when I put in extreme high numbers for the MAX_ACCEL values (1000 instead of the wanted 100). Then I do not see any joint following errors but the abrupt start/stop of the machine is not good for the mechanics... The parport configuration on the same machine runs perfectly well with MAX_VELOCITY=25 and MAX_ACCELERATION=100 (mm/s) but the hostmo2 configuration keeps having problems. I tried lots of different timing where BASE_PERIOD,SERVO_PERIOD and TRAJ_PERIOD are small, larger, different values or the same but nothing seems to help. I am getting kind of desperate. With the 5i20 hostmot2 configuration things only are working as long as I keep my jog under ~400 mm/min as soon as I go higher (and up to the max 1500 mm/min) the joint following error appears on any of the axis as soon as I jog by repeated presses of the keyboard jogs quickly after each other. What causes this joint following error and how to fix it? ------------------------------------------------------------------------------ Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
