Two-speed probing
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I'd like to ask for an option to be added to M558 for probe speed reduction, similar to how RRF slows down the probe speed for analog probes when the reading is beyond 500, but less than the trigger value.
If M558 is set for multiple probes with a certain dive height, given after homing Z, and the first probe, the probe to slow down after a percentage or a specified amount of the dive height, to some fraction of the original specified probing speed.
Probe 1: 100% of probing speed as specified in M558
Probe 2 & 3: after 70% of dive height tavelled, reduce probe speed to 505 of probe speed set in M558. -
@sinned6915 Since RRF 3.2, analog probes are no longer slowed down. There are few probes that use analog probing now, and the Duet3D IR probe is always in digital mode on Duet 3 as there is a permanent pullup resistor.
Instead, from RRF 3.3beta2 you can provide two F parameters instead of one, where the second is lower than the first, for example F1000:500. When doing a plain G30 command, an additional probe will be done using the first speed to establish the approximate bed position, before one or more additional probes are done using the second speed. The first speed will not be used when probing at a defined point or when mesh bed probing.
If probing multiple times is taking too long, reduce the dive height, as you're not expecting it to trigger in that first 70% in your example.
Ian
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@droftarts THANK YOU! That will work.
I missed that feature in the description of changes. I will try that.
