I am losing patience with the Bandit on my Shizuoka mill, so I am thinking of converting to EMC2 sooner than later. I would like to save the stepper drivers but they look like they might have a proprietary integration with the controller. The drives have four inputs that appear to take in steps as quadrature signals plus their complements; QB, QA, /QB, /QA.
QB ___|```|___|```|_ QA _|```|___|```|___ /QB ```|___|```|___|` /QA `|___|```|___|``` ... Darn, I just realized this will only work for the parallel port, which is too slow. I guess, I need new step/direction drivers plus a hardware clock generator. Unless someone knows of a clock generator with quadrature outputs. For a stepper driver, what do I need to consider to make the best integration with EMC2? My current drivers have a 45 V supply, 8 Amp limit, and 6 wires of which two are labeled "common". The motors are not labeled and I don't know how to determine the steps per revolution. I seem to recall the Geckos had a non-adjustable I in its PID tuning? I want to use limit and home switches, but I am used to homing on an encoder index and I won't have an index. It seems that a switch alone would not be accurate enough. I suppose I can add an index disk and sensor. On the other hand, this is only important if you don't want to touch off after powering up? It's time to hit the books, but any advise is appreciated. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/Bandit CNC) ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
