Hi Chris
I guess I missed it also. Saw the later post where there was a suggested work around since this is a Mesa card setup. It would be possible to add a normally closed real relay contact between the limit prox and the drive's directional inhibit input that, when pulled by the homing pin in HAL would disconnect that input. I'll put my flame suit on after that suggestion. Ray On Wed, 13 Jun 2007 10:40:48 -0500, "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> said: >On Wed, Jun 13, 2007 at 08:48:43AM -0500, Ray Henry wrote: >> >> It could also be me reading it wrong. I had an issue trying to home >> using a shared limit pin. The one axis I was homing was fine but all >> the others would fault. No way around it after the ignore limit code >> was made single axis. >> >> Long ago we found that motion stuttered during homing. Some sort of >> pause in the motion while EMC looked at the home pin. If this is still >> the case, it might cause the increased following error that was >> observed. >> >> Ray > > >Ray I missed the last paragraph of Richard's message at the first >reading, but down there he says that his switches disable the servo >amp during the homing process, which causes a larger following error. > >The motion (decelerating to a stop after touching the switch) is >commanded smoothly, but his machine can't track it well, because the >amp is off, and the axis is coasting. > >Chris > > >------------------------------------------------------------------------- >This SF.net email is sponsored by DB2 Express >Download DB2 Express C - the FREE version of DB2 express and take >control of your XML. No limits. Just data. Click to get it now. >http://sourceforge.net/powerbar/db2/ >_______________________________________________ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
