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I've upgraded to linuxcnc 2.5 and returned to configure the spindle encoder. Looking at the HAL meter I don't see the spindle position reset to zero it just keeps incrementing the position values with each clock pulse on phase A. I've obviously got something wrong here see below. Even the spindle velocity looks dodgy, it shows a random value in the HAL meter. My encoder is a 100 slot disk with index (optical) G33 just gives me maximum velocity regardless of the spindle speed.

#### SPINDLE ENCODER

addf encoder.update-counters base-thread
addf encoder.capture-position servo-thread

setp encoder.0.position-scale 100.
setp encoder.0.counter-mode 1


net spindle-position encoder.0.position-interpolated => motion.spindle-revs
net spindle-velocity encoder.0.velocity => motion.spindle-speed-in
net spindle-index-enable encoder.0.index-enable <=> motion.spindle-index-enable

net spindle-index parport.0.pin-11-in => encoder.0.phase-Z
net spindle-pulse parport.0.pin-10-in => encoder.0.phase-A

The example in the manual doesn't use position-interpolated...

linuxcnc.org/docview/html/examples/spind...d_spindle_feedback_a

John

Hi

My lathe with 120 hole optical disc has the below hal listing, which is ALMOST identical to yours;

The difference is that I set phase-Z to pin-11-in-not because otherwise the BOB inverted the signal and had index permanently on and just off once per rev.

Is this what is happening to you?

regards

I don't think so . The HAL scope shows the index is low for most of the cycle. I did look at your config and got some ideas. I think I've missed setp encoder.0.index-enable 1 so the count isn't resetting after each 100 pulses. I'm going to make this change and try again.

Cheers,
Peter.

yea i'd say the they need reversing , they should be high , then drop low on pulse , what sensors are you using ? , if you have any other opto's in the signal path they will invert the signal

I'm using a homemade encoder but I'll try inverting the index signal.