I've seen postings by the smoothie folks here and elsewhere that G30 is entirely appropriate to use for delta bed distance calibration with a probe and I have used it successfully for quite awhile.
Yet the documentation here says:
(forum dot smoothieware dot org/zprobe#toc14)
"G30 Znnn will probe until it hits the bed then sets Z to nnn, this can be used to set the nozzle height if nnn is the probes Z offset from the nozzle in the Z direction.
This is NOT supported for deltas, use on Cartesians only."
Is the documentation out of date or has something changed?
I've also seen posts that say G28 resets a G30 Znnn setting, but that isn't the case anymore. Only a G92.1 resets it, correct?