I am not so sure about the parallel port and encoder idea though, the encoders I see are up to 1000 per rev, that requires a pretty fast base period to handle that, not? <2us ?
I also am not very clear on emc2 capability to manage analog inputs, it seems easier to offload the deciding to an external mcu of some sort. Also, how would emc2 handle encoders with steppers? On Mon, Feb 6, 2012 at 12:23 PM, Erik Friesen <e...@aercon.net> wrote: > I don't care about an analog measurement, I want the system to pause or > park when amps are outside of a set range. How would you do the first > scenario? > > > On Mon, Feb 6, 2012 at 12:14 PM, Jon Elson <el...@pico-systems.com> wrote: > >> Erik Friesen wrote: >> > I have been looking pretty close at the pico systems board, however, as >> of >> > yet I am not clear how to integrate spindle amps monitoring with it. I >> > also want to monitor vaccum for a holddown system. >> > >> You just want an overcurrent limit, or you want an analog measurement >> available to LinuxCNC? The first should be fairly easy, assuming you >> have some kind of current sensor. The second is not easy, I just didn't >> put in a provision for analog inputs. If low-resolution is good enough, >> you could hook up an 8-bit ADC chip to 8 digital inputs and use >> the weighted-sum HAL component to turn that back into a value. >> >> Jon >> >> >> ------------------------------------------------------------------------------ >> Try before you buy = See our experts in action! >> 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-dev2 >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > ------------------------------------------------------------------------------ Try before you buy = See our experts in action! 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-dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
