# counting the spindle encoder in software loadrt encoder names=encoder_0,encoder_1 # simulate the encoder loadrt sim_encoder names=sim_encoder_0,sim_encoder_1 loadrt limit2 names=limit_speed addf limit_speed servo-thread ####################################################### # Beginning of threading related stuff ####################################################### # spindle speed control net spindle.0.cmd spindle.0.speed-out => sim_encoder_0.speed net spindle.1.cmd spindle.1.speed-out => sim_encoder_1.speed # simulate spindle mass setp limit_speed.maxv 500.0 # rpm/second # spindle encoder 0 # connect encoder signals to encoder counter net spindle-phase-A sim_encoder_0.phase-A => encoder_0.phase-A net spindle-phase-B sim_encoder_0.phase-B => encoder_0.phase-B net spindle-phase-Z sim_encoder_0.phase-Z => encoder_0.phase-Z # assume 120 ppr = 480 counts/rev for the spindle setp sim_encoder_0.ppr 120 # iocontrol output is in rpm, but sim-encoder speed is rps setp sim_encoder_0.scale 60 # scale encoder output to read in revolutions # (that way thread pitches can be straightforward, # a 20 tpi thread would multiply the encoder output # by 1/20, etc) setp encoder_0.position-scale 480 # encoder reset control # hook up motion controller's sync output net spindle-index-enable spindle.0.index-enable <=> encoder_0.index-enable # report our revolution count to the motion controller net spindle.0.pos encoder_0.position => spindle.0.revs # spindle encoder 1 # connect encoder signals to encoder counter net spindle-phase-A1 sim_encoder_1.phase-A => encoder_1.phase-A net spindle-phase-B1 sim_encoder_1.phase-B => encoder_1.phase-B net spindle-phase-Z1 sim_encoder_1.phase-Z => encoder_1.phase-Z # assume 120 ppr = 480 counts/rev for the spindle setp sim_encoder_1.ppr 120 # iocontrol output is in rpm, but sim-encoder speed is rps setp sim_encoder_1.scale 60 # scale encoder output to read in revolutions # (that way thread pitches can be straightforward, # a 20 tpi thread would multiply the encoder output # by 1/20, etc) setp encoder_1.position-scale 480 # encoder reset control # hook up motion controller's sync output net spindle-index-enable spindle.1.index-enable <=> encoder_0.index-enable # report our revolution count to the motion controller net spindle.1.pos encoder_1.position => spindle.1.revs # for spindle velocity estimate loadrt lowpass names=lowpass_velocity.0,lowpass_velocity.1 loadrt scale names=scale_to_rpm.0,scale_to_rpm.1 net spindle-rps-raw.0 encoder_0.velocity lowpass_velocity.0.in net spindle-rps-filtered.0 lowpass_velocity.0.out scale_to_rpm.0.in spindle.0.speed-in net spindle-rpm-filtered.0 scale_to_rpm.0.out setp scale_to_rpm.0.gain 60 setp lowpass_velocity.0.gain .07 addf lowpass_velocity.0 servo-thread addf scale_to_rpm.0 servo-thread net spindle-rps-raw.1 encoder_1.velocity lowpass_velocity.1.in net spindle-rps-filtered.1 lowpass_velocity.1.out scale_to_rpm.1.in spindle.1.speed-in net spindle-rpm-filtered.1 scale_to_rpm.1.out setp scale_to_rpm.1.gain 60 setp lowpass_velocity.1.gain .07 addf lowpass_velocity.1 servo-thread addf scale_to_rpm.1 servo-thread # for at-speed detection loadrt near names=near_speed.0,near_speed.1 addf near_speed.0 servo-thread setp near_speed.0.scale 1.1 setp near_speed.0.difference 10 net spindle.0.cmd => near_speed.0.in1 net spindle-rpm-filtered.0 => near_speed.0.in2 net spindle-at-speed.0 near_speed.0.out spindle.0.at-speed net spindle.0-fwd <= spindle.0.forward addf near_speed.1 servo-thread setp near_speed.1.scale 1.1 setp near_speed.1.difference 10 net spindle.1.cmd => near_speed.1.in1 net spindle-rpm-filtered.1 => near_speed.1.in2 net spindle-at-speed.1 near_speed.1.out spindle.1.at-speed net spindle.1-fwd <= spindle.1.forward addf encoder.capture-position servo-thread addf sim-encoder.update-speed servo-thread addf sim-encoder.make-pulses base-thread addf encoder.update-counters base-thread