Thanks, Stephen, for the advice. As so often seems to happen (to me, anyway) a suggested strategy leads to improvement indirectly. Like actually twisting the motor shaft to see if 11 turns actually _does_ rotate the table 1 degree (it did) which made me think of putting a protractor next to the rotary table and finding out how many degrees a G0A1 made it turn. That was around 31.5, so when I divided my INPUT_SCALE value by that I got....1 degree from a G0A1..tada!!!!!!
Then I had to tweak the heck out of MAX_VELOCITY and FERROR so that I could get the thing moving at a respectable speed. The INPUT_SCALE of 120 did not do much for the speed that the table turned. ====================================== One other weirdness: I cannot seem to get MIN and MAX_LIMIT to work right. Thinking that I might want to spin something a bunch of times in the rotary axis (ie. for threading) I tried -3000 and 3000 respectively. But when I try a G0A360 (to fine-tune the INPUT_SCALE value) I get an AXIS error like Linear move -n out of range when a) it's an angular move, and b) it clearly isn't out of range. ***ding ding*** As usual, writing out the weird behaviour either makes me realize what the problem is, or I think of a good test to try. I just found that I can get 200 degrees worth of travel, and no more. If I do a G0A100 or A-100 right after starting EMC/AXIS, that's OK. Anything farther out is the above error. Even better, if I jog say 50 degrees one way and zero the axis with shift-home, then I can go from 50 degrees to 250, again no more. I think this is an AXIS weirdness but I don't know what might be causing it. Any ideas anyone? thanks again, Pat =================== Patrick Ferrick Town of Webb School Main Street Old Forge, NY 13420 (315) 369-3222 (315) 369-6216 (fax) ------------------------------------------------------------------------- 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
