On 9/27/2013 8:03 AM, Jon Elson wrote: > On 09/27/2013 12:53 AM, Gregg Eshelman wrote: >> What hardware do I need to use those so LCNC can read the data? They worked >> fine with (I presume) acceptable accuracy when new, no reason they won't now.
> Just to read them to verify function and resolution, you may be able to > connect to parallel port > pins and read via the software encoder HAL component. If you mean in a > servo control > configuration, there are boards from Mesa and Pico Systems (my company) > that perform > all these functions. Depending on the servo amplifiers you plan to use, > that guides > the choice of interface boards. > > Jon I'm using stepper motors (a bit over 1,000 oz-in) with Chinese DQ860MA drives. They take step and direction input and I've had one running with both LCNC and Mach3. (LCNC will need some tweaking to run it smoothly, Mach3 ran it without any vibration without needing any fiddling with the step frequency etc.) The old Crusader M system used the one linear and two rotary encoders plus tachometers on the motors. If the linear scales are absolute type, reading them will tell the system to the nearest 0.0005" where the table is. Without removing the rotary encoder to see its part/model label I don't know if it's incremental or absolute. Haven't got a reply yet from Anilam about a manual for their A-10 linear encoders. All I've been able to find so far is the resolution and that the series was discontinued in 1989. (So Acra put newly discontinued parts on the mill in 1990.) ------------------------------------------------------------------------------ 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=60133471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
