M122 Output documentation

[Monteaup]

Hello,

is there a documentation for the M122 output? I'm not able to find anything useful.

In particular the drive output. I got here some ifcount and timeout values for my extruder.

The meaning might be:

1. standstill - might be the current stepper status
2. read errors - for the stepper driver?
3. write errors - for the stepper driver?
4. ifcount - ?
5. reads - ?
6. timeouts ?

regards,
Martin.