This message—"WN57 OVERRIDE FUNCTION IS ACTIVE"—appears on FANUC CNC controls (often on series like 0i, 30i, 31i, 32i, or 21i) when the control is operating in a special override mode that bypasses certain safety or standard operating limits.
Elias wiped grease from his forehead with the back of a hand, leaving a dark smear. He stared at the Fanuc Series 0i-TF screen. The machine, a battered but reliable Okuma lathe they called "Old Bess," had stopped mid-cut. fanuc wn57 override function is active
Diagnostic Tip: If you want to disable this feature to run at 100% speed, ensure all override dials are set to 100% and any "Dry Run" or "Override" toggle switches are turned off. The machine, a battered but reliable Okuma lathe
On the display, in crisp, alarming green text, sat the message: WN57: OVERRIDE FUNCTION IS ACTIVE. alarming green text