On 8 October 2012 17:44, Steve from Tube Gauge <st...@tgifinc.com> wrote: > Can the stepper motor 'step & direction' output from EMC2 be used to > run a servo based system that has step & direction input amplifiers
Yes, absolutely. In fact there are at least two ways to do it. You can run open-loop, sending position information as step and direction signals just as if the servos were stepper motors, or you can run the stepgens in velocity mode, and have a PID controller Inside LinuxCNC controlling the position with the servo amps acting effectively like velocity-mode drives driven by step-rate rather than analogue voltage. The latter system requires that the encoder feedback goes to both the drives and the PC. You will probably run out of pins if using a parallel port. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
