John Thornton wrote: >I have a CNC4PC C1G parallel port interface card driving a Gecko 203v. >I have a 28vdc power supply and I am running the stepper without any >load just to get my configs setup... The highest velocity I can get is about >70 as reported on the Axis screen no matter what I set F at. >If I do a MDI G1 F100 X10 or G1 F400 X10 >I get the same velocity reported of about 70. > >If i do a G1 F50 X10 I get the expected velocity of about 50 >If I do a G1 F25 X10 I get the expected velocity of about 25 > >I've ran the latencey test on the machine and used the spreadsheet to >figure out what to set the base period at. > >My config is: >BASE_PERIOD = 15000 > > This means that you can get one step every 30 microseconds, or about 33333 steps per second.
>[snip] >INPUT_SCALE = 3000 > > This, combined with the 33333 steps per second above, means that you can get a max of 1.1111 inches/second (I assumed inches for your units). 1.1111 * 60 = 66.666 IPM, so it sounds like it's all working as it should. You need to reduce BASE_PERIOD if you can, or get the developer version from CVS, and use the "double-step" mode, which would basically double the max step frequency at the same BASE_PERIOD. - Steve ------------------------------------------------------------------------- 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
