Fanuc Wn57 Override Function Is Active Today
Understanding the FANUC WN57 Override Function Is Active Message
Review: FANUC WN57 – Override Function Active
What it is:
The WN57 alarm (or status message) on a FANUC CNC control indicates that an override function is currently enabled – typically a rapid traverse override, feed rate override, or a dry run override. Unlike many alarms, WN57 is generally an informational message, not a critical error. The machine will continue to run, but with altered motion parameters. fanuc wn57 override function is active
Elias did exactly that. He checked the dial. It sat perfectly at the detent for 100%. He hit Cycle Start. Understanding the FANUC WN57 Override Function Is Active
Step 2: Check FANUC Soft Keys (Virtual Overrides)
On newer FANUC i-Series (Series 0i-F, 31i-B5), overrides can be triggered via soft keys: CNC screen messages or alarm/log entries
Where you see it
- CNC screen messages or alarm/log entries.
- Operator pendant or override knobs/keys (e.g., FWD/REV for spindle, % dial for feed).
- Part program verification tools or HMI status panels showing override percentages.
Key implications:
- Feedrate and/or rapid traverse may be limited to a percentage below commanded values.
- Program may continue running but at reduced speeds, or motion may be inhibited until the condition clears.
- Some I/O or safety interlocks may be influencing the override (e.g., E-Stop chain, safety door, light curtain, remote MPG, or soft limits).
WN57: OVERRIDE FUNCTION IS ACTIVE.