M function during move

Tell me how to implement the function while driving? It is desirable that it be recorded from the time or distance parameter to the end point.

Hm, is this example taken from a document? If so can you provide a link to it?

No. I painted myself in Adobe Illustrator :laugh:

I see. I don't think you will get this done with standard gcode.
Maybe with a python remap?

linuxcnc.org/docs/html/remap/remap.html#...ming-embedded-python

[edit]

There is a hal-pin that might be useful:

motion.distance−to−go OUT FLOAT

Distance remaining in the current move

Now I do that.
Using halcmd lcec.0.D2.dout-0 1
But may be I can use own new hal componet and any else for solving task?

sure, can't see why not. Do you need this for all moves or just for some?