[Identify the Override] ──> [Normalize Switches] ──> [Toggle G-Codes/Modes] ──> [Check PMC Diagnostics] Step 1: Normalize Physical Override Switches
This is not a critical machine failure, but rather a . Here is a breakdown of what it means, why it appears, and how to resolve it.
Find the [PMC Parameter] or [PMC Config] screen.
By correctly identifying and setting the K906.0 parameter, you can safely and confidently clear the alarm, returning your machine to standard operation. For persistent alarms or more complex issues like WN58, consult your machine tool builder's documentation or contact FANUC America for official support resources. fanuc wn57 override function is active
Troubleshooting the FANUC WN57 Override Function Is Active Warning
If this message appeared suddenly after a crash or battery change, it may be related to a Safety PLC forcing a "slow mode" until a safety fault is cleared or the home position is re-established.
While the specific implementation varies by machine tool builder, "WN57 Override Function is Active" typically relates to [1]. Here are the most common scenarios: 1. Spindle Override/Override During Rigid Tapping By correctly identifying and setting the K906
At the end of all your test programs, include:
If none of the above works, and you are certain no physical overrides are active:
However, running production while this warning is active is highly inefficient, as cycle times will balloon due to capped feedrates. To maintain high productivity and safety: While the specific implementation varies by machine tool
When operating a CNC machine powered by a FANUC controller, encountering warnings can disrupt your production workflow. One such notification is the warning.
: If a technician was recently working on the machine, they may have used the Forced I/O function in the PMC to override a signal. Per the Fanuc 30i/31i/32i Handbook , an "Override Mode" of the forced I/O can be active for up to three paths simultaneously.
In some cases, specific "User Input" (UI) signals from a PLC force this state. Check your I/O status to see if *OVRD_ENB (Override Enable) or similar signals are being held high or low by external logic. : Go to Menu > Setup > Prog Select .