Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
The documentation states that M591 P1 is a simple sensor, that is "low when filament is present." However, in the M591 D0 status message, it states "output low when no filament."
Which is it?
Thanks for spotting this. The documentation was wrong; I have just corrected it.