On Mon, 2010-03-22 at 09:31 +0100, Lars Levin wrote: > Hello group! > > I have servodrives with the ability to use them in SSI absolute > encoder mode. ... snip > I am really interested in testing this on a gantry system and by using > SSI getting rid of the homing problem in a gantry system, when the > axes know exactly where they are when you start up the system. ... snip
In case you haven't seen what I have done with my SSI encoder, my files are here: http://www.wallacecompany.com/machine_shop/EMC2/AEAT-6010/ I use a parallel port for I/O. The .comp file does the magic by bit-banging the clock and reading the input on each thread pass. This is pretty slow, about 23 milliseconds per word. I could probably put the encoder .comp in a faster thread, but from my SPI DAC work, the standard base thread is too fast. You might be able to do some testing with this setup, but it may not be fast enough for the production version. If you have the datasheet on your encoder, the my encoder.comp may be massaged to work with yours. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
