G38.2-G38.5 - Probe target

Description

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.