On 10/03/2013 09:50 AM, Ricardo Moscoloni wrote: > Hi Kirk, > im interested in modbus control, in the past week i was working on > controlling some delta vfd and servo drives (only non-rt processes > like on/off, rpm set, reverse, warnings, alarm clear, status), do it > with an usb/rs485 adapter from ebay (very cheap), and using mb2hal for > interfacing with LCNC (have problems with the vdf as it is the cheap > of the line and dont accept modbus fnct16 only fnct6). Some examples > with mb2hal control an arduino mega, as a modbus I/O control.
I don't like USB much for using with LinuxCNC. The VFD/Modbus components work well enough or can be modified easily enough to get what I need. Plus I don't know Ladder. > > Im interested, what is your intention with the AVRs adaptor? > I have a few VFD's that I run three twisted pair to for FWD, REV, and speed PWM. With a micro controller I could get that plus monitor frequency, load, and other things with two pair. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
