On Sat, 2008-01-19 at 21:22 +0200, Anders Wallin wrote: > Hi All, > > My VFD has an analog output which can be programmed to indicate either > output frequency, current, or power etc. > > I'd like to read this into EMC so I can monitor and plot the spindle > load while the machine is running. > > I have a M5i20 card which doesn't have analog inputs, so I'm wondering > if any of you know a nice simple way of converting the 0-10 V into > either PWM or a pulse-train (FM) or something else that can be read by > one IO pin (read say every 0.1 ms) on the m5i20 ? > > I know a small 8-pin PIC could do this easily but if there are ICs that > do this out there I'd like to avoid the programming... > > > Anders
I noticed on my Hitachi SJ200 that the control pad is connected to the drive via Modbus. It looks like the manual gives enough information to replace the control panel with EMC. (Darn, another project to do.) Would your VFD happen to have Modbus or some other communications port? I am also working on some three wire I/O, which could get close to one wire per signal, if you had more that a few signals deal with. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending) ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
