Viesturs Lācis wrote: > I had a thought about that and there is one BUT... I am going to use > stepper motor to control the rotary axis and as far as i know there is > only one way to create a closed loop system - EMC outputs PWM signal > and receives encoder data and then there has to be PWM-to-step signal > converter. > > The Pico Systems Universal Stepper Controller is a board that generates step pulses. The default is to have it count the step pulses it sends out to keep EMC in sync with the steps. But, by flipping a switch, it can count encoder pulses instead, and report that back to EMC. This selection can be made on an axis-by-axis basis. You can also use a software encoder in EMC to read the encoder, but that eats up a lot of parallel port bits. But, you could do a 4-axis system with only two parallel ports this way, setting the data bits on the 2nd port to input mode.
Jon ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
