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M48/M49: Enable/disable override

Allows or blocks feed/spindle overrides depending on the control.

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
M48 / M49
E.g.:
M48 / M49

Machine: Milling, Turning, Mill-turnRisk: Medium

Fanuc

M48 / M49
  • Useful for protecting critical feeds; may vary with the PLC.

Haas

  • Confirm exact behavior in machine settings.

Other codes in Auxiliary

See the full list of G and M codes

Frequently Asked Questions (FAQ)

What does M48/M49 mean in a CNC program?

Allows or blocks feed/spindle overrides depending on the control. In the catalogue it appears as "Enable/disable override", within the Auxiliary family.

How is M48/M49 written on each control?

Fanuc: M48 / M49. The exact syntax depends on the control version and the machine parameters: always confirm with the manufacturer's manual.

Can you give me an example of M48/M49?

M48 / M49 — Allows or blocks feed/spindle overrides depending on the control.

Which machines use M48/M49?

M48/M49 is used in: Milling, Turning, Mill-turn.

What should you watch out for with M48/M49?

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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