[Shishio Makoto]

Hi guys.
Need help, I want to display the spindle speed in KMotionCNC
But could not find an example of how to do it.
The sensor is connected to digital pin of 36

[TomKerekes]

Hi Shishio Makoto,

We normally prefer to have a quadrature sensor. But see this Thread:

http://www.cnczone.com/forums/dynomo...ml#post1549406

Regards

[Shishio Makoto]

Hi Tom,
I read it, but I could not understand.
I want to make counting pulses from pin 36, and the output value in KMotionCNC.
For example, the output value instead of the fourth coordinate axis.

[TomKerekes]

Hi Shishio Makoto,

What parts don't you understand?

The first step would be to change:

#define SPINDLE_PULSE_BIT 46

to

#define SPINDLE_PULSE_BIT 36

Then run the program in a Thread in KFLOP to test (ie Thread #3)

Then check on the KMotion.exe Axis Screen to see if the Position is incrementing properly 1000 counts/ spindle rev.

Then configure KMotionCNC | Tool Setup | Trajectory Planner | Spindle Type=1, Axis=5, Counts/rev=1000

HTH
Regards

[Shishio Makoto]

Thank you, Tom.
Works, but the revolutions unstable.
The spindle rotates 500 revolutions.

[TomKerekes]

Hi Shishio Makoto,

What do you mean by:

The spindle rotates 500 revolutions.

You were testing at 500RPM? Hmmm that would only be ~8 pulses/sec. We would have to monitor for a long time to get an accurate reading. Certainly not the 0.1 second default. Try changing the Update Time Setting in KMotionCNC to 10 seconds.

With such a slow pulse rate we may need to change the program to measure the time per revolution rather than simple counting pulses over a period.

Regards

[Shishio Makoto]

Everything is working. Put it on the sensor Schmitt trigger, now the value is stable.
Thank you very much.