On Dec 1, 2011, at 9:02 PM, andy pugh wrote: > A chap on the forum is having trouble with his gantry. It basically > seems to f-error as soon as he goes into world mode. If it doesn't > f-error then, it does so when he tries to jog at any speed other that > very slowly. > He can jog as fast as he wants in joint mode. > > I have experimented with his config in a VM, and I see the same thing. > Looking at the command and feedback in Halscope it appears that the > stepgen just isn't making the steps. > > The very odd part is that replacing gantrykins with trivkins allows > jogging at full speed, with no other changes... >
Boy, I had this problem too. But I had so many problems that I have now forgotten what fixed this one, I should have written them down. Would have made for a nice troubleshooting FAQ. What comes to mind (and I admit this may be off the mark)… Here are a couple sections from my ini file. Do you have (either/both) DEFAULT_LINEAR_VELOCITY set in the DISPLAY section, and/or DEFAULT_VELOCITY and DEFAULT_ACCELERATION set in the TRAJ section? [DISPLAY] DISPLAY = axis-custom POSITION_OFFSET = RELATIVE POSITION_FEEDBACK = ACTUAL MAX_FEED_OVERRIDE = 2.000000 MAX_SPINDLE_OVERRIDE = 1.000000 MIN_SPINDLE_OVERRIDE = 0.500000 INTRO_GRAPHIC = emc2.gif INTRO_TIME = 0.01 PROGRAM_PREFIX = /home/a2ms/emc2/nc_files PYVCP = custom_pyvcp.xml INCREMENTS = .1 .05 .01 .005 .001 .0005 .0001 POSITION_OFFSET = RELATIVE POSITION_FEEDBACK = ACTUAL DEFAULT_LINEAR_VELOCITY = 1.0 MAX_LINEAR_VELOCITY = 72 MIN_LINEAR_VELOCITY = 0.010000 EDITOR = gedit GEOMETRY = xyz DEFAULT_TO_WORLD_MODE = 1 [TRAJ] AXES = 4 COORDINATES = X Y Z A HOME = 0 0 0 LINEAR_UNITS = inch ANGULAR_UNITS = degree CYCLE_TIME = 0.010 #These affect jogging acceleration and not MDI acceleration (see EMC2 Doc Basic Configuration) DEFAULT_VELOCITY = 1.00 DEFAULT_ACCELERATION = 85 #These affect MDI and joint acceleration and not jogging in World mode acceleration #MAX_VELOCITY = 41.6666666667 MAX_VELOCITY = 55 MAX_ACCELERATION = 150 -Tom ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
