24 lines
470 B
Markdown
24 lines
470 B
Markdown
---
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tag: m0123
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title: Fan Tachometers
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brief: Report fan speeds from tachometers
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author: thinkyhead
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group: control
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codes: [ M123 ]
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parameters:
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examples:
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-
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pre: Report current fan speeds
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code: M123
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-
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pre: Report fan speeds every 5 seconds
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code: M123 S5
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---
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If your machine has fans with tachometers this command will report their current speed readings in RPM. Marlin can also auto-report the fan speeds at regular intervals, as set by `M123 S`.
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