On FANUC i-Series controls (such as the 31i, 0i-F, or older 16i/18i models), is an acronym-based system warning code. WN stands for Warning.
Job estimations fail because the machine is running slower than programmed.
Ensure the robot has fully retracted to its "Home" or "Safe" position outside the machine.
Because this is a function activated by the machine ladder, it generally cannot be cleared with a simple "Reset" button. The message will disappear once the condition causing the override is removed. fanuc wn57 override function is active
The most common trigger is the physical feedrate or rapid override dial on the operator panel. If the dial is set to a value other than 100% (such as 0%, 25%, or 50%) during a specific G-code command that demands precise timing, the CNC generates the WN57 message to alert the operator that axis movement is intentionally throttled. 2. Dry Run Mode Enabled
Operating a FANUC CNC machine requires an understanding of its system warnings and alarms. One message that frequently puzzles operators is the warning.
Resolving the WN57 message depends entirely on whether it is an intentional operator choice or an unexpected system state. On FANUC i-Series controls (such as the 31i,
This method provides a direct approach for those familiar with FANUC's keep relay system.
This function is primarily used during debugging to force specific signals manually. To clear the warning, you must disable the override mode within the PMC parameters. Cause of the Alarm The alarm is triggered when the Override Mode
Press the or [PMCPRM] softkey, then select [KEEP-RL] (Keep Relays). Ensure the robot has fully retracted to its
error if too many paths (typically four or more) are being overridden simultaneously. Course Hero Recovery Steps
In some cases, incorrect PMC parameter configurations can cause the override function to remain active even when not intended.
Does the warning prevent the machine from , or is it just a visual alert? Share public link
Understanding and Troubleshooting the "FANUC WN57 Override Function is Active" Alert
