Gentlemen, Just a thought on single axis multi motor homing. If the homing sequence would inhibit the axis reaching the index until both have reach index then homing would be as trivial as single axis single motor. thanks Stuart
On Sat, Feb 7, 2009 at 4:45 AM, Lars Levin <[email protected]> wrote: > Hi all! > > I have been monitoring this list for several yoars and also been > planning my milling machine for too long, > but I do have an old milling machine converted and up and running with > EMC2 step/dir. > > My new machine will require two motors on each axis, XXYYZZ A and B > This will be a 3 axis portal machine with a 2 axis rotary head. > I have 2 mesa 5I20 boards and 2x7I33 and 2x7I33, pobably I need another > pair of 7I37 or Anders Wallins breakout boards. > > My servodrives are Bosch/Rexroth Indramat DKC01-1 wich are analog input > ac servo drives( can be used with step/dir as well). > The motors have absolute encoder emulation or incremental. > > I know it is possible to run EMC with two motors on one axis, but the > tricky part seems to be the homing. > > Is there any possibility for EMC to use absolute encoders, so instead of > homing at startup you load the actual > positions from the servidrives? > The drive documentation says: > "The NC-control system which is connected must have a SSI input and be > able to process SSI data in 25-bit format." > > If this does not work, has anybody any suggestions on how to do homing > with 2 motors on one axis? > > It might be possible to use the internal homing function of the > servodrives, this requires a homing signal from EMC > and will respind "homed" on a separate signal. > Can the homing function in EMC be configured just to send a home signal > on one pin and receive a homed signal > on another pin, and then reset the coordinates? > > Thanks for all the fantastic work you all are doing for EMC! > > Best Regards! > Lars Levin > ------------------------------------------------------------------------------ > Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) > software. With Adobe AIR, Ajax developers can use existing skills and code to > build responsive, highly engaging applications that combine the power of local > resources and data with the reach of the web. Download the Adobe AIR SDK and > Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
