http://www.linuxcnc.org/index.php/english/forum/46-francais/28479?limitstart=0#52332
(it switches to english eventually). The idea is to have a manually-operated sub-stage on the machine. I think that all that is required is an encoder on the hand-operated leadscrew, the output of which is added to the motor encoder output.(in HAL) Then, as you turn the handle the PID will turn the motor in the opposite direction to keep the apparent position the same, tracking the same point on the workpiece.. Of course the machine config needs to be larger than the physical machine, so you lose soft-limits, so it has drawbacks. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
