EMC List: I've just upgraded my drivers to Gecko G202s. All seems to work well and I'm trying to fine tune EMC.
These microstepping drives and higher rapids push the 1GHz computer much more than the original half step drivers. I was getting "joint 0 following error". After some experimentation I decreased the Base Task Period, Servo Task Period, and Trajectory Planning Period. I kept the ratio between these the same. Using 30,000 / 600,000 / 6,000,000 for these periods I was able to get 51 in/min before a following error. Using 20,000 / 400,000 / 4,000,000 I started losing steps around 75 in/min. This seems to solve the problem with the "joint 0 following error" problem and I'm running into driver/motor limits. Reducing the periods further doesn't seem to do much. This is fine and I've set rapids to 60 in/min which is fast enough to scare me real good. However, I now seem to get an "Unexpected realtime delay, check dmesg for details" warning. Minimal testing seems to show this error occurs once, soon after EMC is started. After it seems to be fine. I checked the dmesg file and can find nothing related. (I saved dmesg, ran EMC getting the warning, then compared the old and new dmesg files finding no change) Decreasing the Periods seems to promote this warning sooner after starting EMC. What would "Unexpected realtime delay" indicate and what should I adjust to get rid of it? I'm not sure what's helpful, but I'm using: GPL Version 2 (2006) (EMC2 2.0.5) TkEmc *.ini modified from stepper_inch.ini TASK = milltask PARAMETER_FILE = stepper.var EMCMOT = motmod HALFILE = core_stepper.hal / standard_pinout.hal Thank you for any help. -- Hugh Currin Klamath Falls, OR USA ------------------------------------------------------------------------- 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
