Fanuc Wn57 Override Function Is Active [verified] May 2026

Debugging and testing the sequence program during machine setup or intensive maintenance.

Find the entry labeled or "倍率" (in some regional settings). Change the status from "YES" (or 1 ) to "NO" (or 0 ). Method 2: Adjusting Keep Relays (K-Addresses) fanuc wn57 override function is active

If the machine was recently accessed remotely via FANUC LADDER-III software, the override might have been triggered from the external PC. Summary Table: WN57 Message Details Description Message Type PMC Status/Warning (WN) Standard Address Typically controlled by K906.0 Criticality Low (Warning), but unsafe for production Required Action Disable Override Function in PMC Settings Debugging and testing the sequence program during machine

Because WN57 is an "active" status rather than a failure, it can usually be resolved by toggling the function off through the CNC’s internal settings or by modifying a specific Keep Relay ( -address). Method 1: Using the PMC Parameter Screen Navigate to the on your FANUC controller. Select [PMC SET] or [PMC PARAM] . Look for the Setting or Override sub-menu. Method 2: Adjusting Keep Relays (K-Addresses) If the

Understanding the FANUC WN57 Override Function Is Active Message

Note: If K906.0 is already 0 and the message persists, check your machine builder's manual as they may have mapped the debug override to a different K-address. Why Did This Message Appear?

The "Override Function" mentioned in this message refers to a specialized tool used by machine tool builders and maintenance technicians to debug the . When this function is active, it allows for the "forced" manipulation of PMC signals—effectively overriding the standard logic of the machine's ladder to test specific behaviors or troubleshoot faulty sensors.