60 lines
1.6 KiB
Markdown
60 lines
1.6 KiB
Markdown
---
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tag: g038
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title: Probe target
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brief: Probe towards (or away from) a workpiece
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author: thinkyhead
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since: 1.1.0
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requires: G38_PROBE_TARGET
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group: calibration
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codes: [ G38.2, G38.3, G38.4, G38.5 ]
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notes:
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- These commands require `G38_PROBE_TARGET` and a defined probe.
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- '`G38.4` and `G38.5` are only available with the `G38_PROBE_AWAY` option.'
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parameters:
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-
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tag: X
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optional: true
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description: Target X
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values:
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-
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tag: pos
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type: float
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-
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tag: Y
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optional: true
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description: Target Y
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values:
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-
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tag: pos
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type: float
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-
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tag: Z
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optional: true
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description: Target Z
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values:
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-
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tag: pos
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type: float
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-
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tag: F
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optional: true
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description: Feedrate for the move
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values:
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-
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tag: rate
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type: float
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---
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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.
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- `G38.2` probes towards a target and stops on contact, signaling an error if it reaches the target position without triggering the probe.
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- `G38.3` probes towards a target and stops on contact. No error is given if it fails to trigger the probe.
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- `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.
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- `G38.5` probes away from a target and stops on contact break. No error is given if it fails to trigger the probe.
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These commands use the current homing feedrate, by default.
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