These commands require `G38_PROBE_TARGET` and a defined probe.
`G38.4` and `G38.5` are only available with the `G38_PROBE_AWAY` option.
tag
optional
description
values
X
true
Target X
tag
type
pos
float
tag
optional
description
values
Y
true
Target Y
tag
type
pos
float
tag
optional
description
values
Z
true
Target Z
tag
type
pos
float
tag
optional
description
values
F
true
Feedrate for the move
tag
type
rate
float
The Probe Target commands are used to probe towards (or away from) a workpiece to determine its precise position. You might, for example, use a grounded metal workpiece, with a metal probe spliced into the bed probe circuit.
G38.2 probes towards a target and stops on contact, signaling an error if it reaches the target position without triggering the probe.
G38.3 probes towards a target and stops on contact. No error is given if it fails to trigger the probe.
G38.4 probes away from a target and stops on contact break. An error is signaled if the target position is reached without triggering the probe.
G38.5 probes away from a target and stops on contact break. No error is given if it fails to trigger the probe.
These commands use the current homing feedrate, by default.
