The "WN57 Override Function is Active" message is a generated by the FANUC PMC (Programmable Machine Controller) [1].
The Fanuc WN57 override function is a feature available on certain Fanuc CNC (Computer Numerical Control) systems, particularly on their 0i-series and later control systems. When the override function is active, it allows the operator to temporarily adjust the programmed feed rate or spindle speed during machining operations. In this article, we'll delve into the details of the Fanuc WN57 override function, its purpose, and how it works.
Alternatively, check if variable #3004 (which controls feedrate, exact stop, and pause overrides) has been set to a value other than 0 . If it is locked, executing #3004=0 in MDI mode will instantly restore normal override control. Impact on Production If Ignored fanuc wn57 override function is active
WN57 is not generated by the CNC core itself; it is generated by the based on specific diagnostic signals. The CNC sends a "mode change request" to the PMC. The PMC checks the following signals (typical addresses – confirm against your ladder diagram):
Always verify that the override function has been properly disabled before releasing the machine for production. The "WN57 Override Function is Active" message is
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
You can deactivate this function using one of the following methods: : Navigate to the PMC Parameter setting screen. Locate the Override Function (倍率功能) option. In this article, we'll delve into the details
Turning on Dry Run forces the machine to use a specified feedrate instead of the programmed