On 10/29/2015 11:48 AM, Stuart Stevenson wrote: > Gentlemen, > re: the cinci at MPM > When they push the arrow key to move an axis the machine keeps moving. A > couple weeks ago the X axis was the only one doing this but now other axes > demonstrate this feature. > They disconnect the keyboard, use the mouse to move the axes with using the > +/- buttons and get the same result. > What should the next focus be to troubleshoot this? > > Ubuntu 8.04 > LinuxCNC 2.4.? > Axis Display
You say: after you release the key, the machine keeps moving. Does it stop moving a second or two later? Both of those jogging mechanisms (keyboard and GUI-button) are of the non-realtime "UI to Task to Motion" variety. The non-realtime parts of that chain (GUI & Task) can have unpredictable timing, resulting in delayed commands getting to Motion, resulting in jogs that go on for a short while after the key is released. As Dave Caroline said, one option is to lighten the load on the system so that more resources are available for Axis and Task. You can run "vmstat 1" in a terminal to see if the machine is swapping or paging, which would suggest adding RAM or killing background processes. The best option is to jog with a hardware jog-wheel connected directly to Motion via HAL. That bypasses the problematic non-realtime stuff entirely. Unfortunately Motion does not have continuous-jog inputs (which is what the keyboard and the GUI + and - buttons do), but i bet it wouldn't be hard to add (he said, not having looked at the code). -- Sebastian Kuzminsky ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
