Servo Spindle motor encoder Mesa 7i76e

PCW wrote:

Can you post you hal and ini files?

andypugh wrote:

blazini36 wrote:

Since you are not using a timing belt you should spin your spindle by hand and let it drive your motor then you can estimate the difference, how accurate you get is all in how thorough you are. Spin the spindle exactly 1 time and look at how many counts feed back from the motor,

A better way would be to set up a halmeter to count the encoder counts, then zero the encoder and rotate the spindle by hand exactly 20 times (or 50 times if you are very patient). Then divide the total counts by 20. The number you get is the number of motor encoder counts per spindle rotation, and that should be accurate enough for most purposes.

PCW wrote:

I don't see anything obvious wrong in the hal file but using halmeter
or "watch" on these three pins should help track down the issue:

near.0.in1
near.0.in2
near.0.out

near.0.in1
near.0.in2
near.0.out

andypugh wrote:

Your HAL

net spindle-vel-cmd-rps        <=  motion.spindle-speed-out-rps
net spindle-vel-cmd-rps-abs    <=  motion.spindle-speed-out-rps-abs
net spindle-vel-cmd-rpm        <=  motion.spindle-speed-out
net spindle-vel-cmd-rpm-abs    <=  motion.spindle-speed-out-abs
...
net spindle-vel-cmd-rps    =>  near.0.in1
net spindle-vel-fb-rps         =>  near.0.in2
net spindle-at-speed motion.spindle-at-speed      <=  near.0.out

Are you actually controlling spindle speed from G-code?
Does Halmeter show the spindle speed on the motion.spindle-speed-out-rps pin?
Everything looks like it should work.

andypugh wrote:

also at motion.spindle-speed-out-rps nothing.

Is the spindle controlled by M3 / M4 and S?

I am failing to see how the spindle can be controlled by the motion.spindle pins but for there to be no output on one of those pins.

Which version of LinuxCNC are you using?