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M37/M38: Conveyor or auxiliary function

M-codes used by some manufacturers for chip conveyor, parts or auxiliaries.

For reference only: syntax changes with the control, the post-processor and the machine parameters. Check the official manual and run a simulation before cutting. Legal notice.

Family
Auxiliary
Machine
Milling, Turning, Mill-turn
Risk
Medium
Example
M37 / M38
E.g.:
M37 / M38

Machine: Milling, Turning, Mill-turnRisk: Medium

Fanuc · Haas

  • Fanuc: PLC dependent function.
  • Haas: In Haas lathe M38/M39 it can be spindle speed variation.

Other codes in Auxiliary

See the full list of G and M codes

Frequently Asked Questions (FAQ)

What does M37/M38 mean in a CNC program?

M-codes used by some manufacturers for chip conveyor, parts or auxiliaries. In the catalogue it appears as "Conveyor or auxiliary function", within the Auxiliary family.

Can you give me an example of M37/M38?

M37 / M38 — M-codes used by some manufacturers for chip conveyor, parts or auxiliaries.

Which machines use M37/M38?

M37/M38 is used in: Milling, Turning, Mill-turn.

What should you watch out for with M37/M38?

Medium risk: it rarely breaks anything on its own, but a wrong value shows up on the part. Check the block before running the batch.

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