On Wed, 2012-02-08 at 17:08 +0100, Spiderdab wrote: > Hi, finally i'm trying to get my new Keling motors and drivers work, > together with a C35 BoB from cnc4pc. > > I wanted to use the charge-pump function (that, if i understood, act as > a watchdog), so i need a signal coming from LinuxCNC every 12,5 kHz, as > written in the manual.
Mach uses a 12.5 kHz signal but I suspect the C35 will work with a wide range of frequency. A while back the maker of these breakout boards mention what the frequency range was, but I don't recall it now. An e-mail to CNC4PC support should give you an answer. In looking at the C35 manual, it looks like the charge pump input is from pin 17 on the DB25 parallel port connector, then goes to a charge pump detector. The detector's output then goes to the ENABLE terminal. So to enable the C35, one can either force the ENABLE terminal to 5 Volts from outside, or have the charge pump detector drive it high internally. If the charge pump drives the ENABLE terminal high, one should be able to measure it at the terminal with a meter or resistor and LED. I don't have one of these boards, so I can't be sure of this. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
