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Find the field labeled (or similar terminology). Move the cursor to this option and set it to "NO" or "0" .
The phrase means the CNC machine is running under modified speed or safety parameters. An override switch on the operator panel has been turned away from its standard 100% position, or a specific software safety override has been triggered in the PMC (Programmable Machine Control) ladder logic. Common Causes of the WN57 Warning fanuc wn57 override function is active
I can provide the exact PMC diagnostic addresses or G-code workarounds for your specific setup. Share public link
If you want, I can tailor this write-up for a specific FANUC series (e.g., 0i, 16i/18i, 21i) or draft a short diagnostic checklist formatted for printing. This public link is valid for 7 days
alarm may also appear if too many PMC paths (more than three) are being overridden simultaneously. Course Hero
During setup, this warning confirms that safety features are working. It ensures the machine is restricted to safe, slow speeds while the operator validates a new program. How to Clear and Resolve the WN57 Warning Can’t copy the link right now
In FANUC-controlled CNC environments, encountering unexpected system state messages can halt production. One such message is the warning.
Some high-end FANUC models (31i-A, 31i-B) feature – a mode allowing the operator to manually jog an axis during an automatic cycle using the MPG (handwheel). If the operator exits this mode without canceling the interrupt or if the program expects synchronized axes, WN57 appears as a safety warning.
If the enclosure door is open while trying to jog or execute code, the system may allow movement but restrict speed, triggering WN57.
: The "Override Select" feature is enabled, which forces the robot or CNC to a specific speed regardless of where the physical knob is turned.