Marcus walked over, his eyes scanning the messy control panel. "Check the parameters. Maybe someone messed with the skip blocks."
Move the cursor to the override function option and change the setting from "effective" to "not effective" (or "YES" to "NO").
Locate any physical key-switches on the operator panel labeled "Setup Mode," "Internal Lock Bypass," or "Robot Manual Override." Ensure they are turned back to the automatic/production position.
Rotate the physical switch and verify if the corresponding binary bits toggle cleanly between 0 and 1 . Flickering or unresponsive bits indicate a failing rotary switch or faulty wiring harness. fanuc wn57 override function is active
He pressed the Reset button. The message flickered, held for a second, and reappeared. The spindle sat locked. The axis motors hummed a low, waiting tone, but the G-code execution was paused. The machine was effectively saying, I’m not moving until you look at what I’m seeing.
When this warning appears on your FANUC i-Series (like the 0i-F, 31i-B, or newer Plus models) screen, it is typically caused by one of the following scenarios: 1. Robot or Loader Interface Synchronization
specifically belongs to a family of safety and interlock warnings. It translates to: “The control is currently in a state where manual or automatic override functions are engaged, preventing the requested action.” Marcus walked over, his eyes scanning the messy
After setting all overrides to 100%, press the RESET button to clear the message.
Suppose an operator is machining a part with a programmed feed rate of 100 mm/min. During machining, the operator notices that the tool is experiencing excessive wear due to the hardness of the material. To mitigate this, the operator activates the WN57 override function and reduces the feed rate to 80 mm/min (80% of the programmed value). This adjustment helps to reduce tool wear and extend tool life.
If none of the above works, and you are certain no physical overrides are active: Locate any physical key-switches on the operator panel
"The override function can be left active without consequences."
To clear this message and return the machine to standard operation, you must turn off the override function: Via PMC Parameters Navigate to the PMC Setting screen on your FANUC control. Find the option for Override Effective Set this value to Restart the CNC to clear the alarm. Via Keep Relay (K-Address) Directly change the keep relay
FANUC Robodrill α-D21MiB (31i-B control) Problem: Operator runs a warm-up program. Then turns on Dry Run to test a new engraving cycle. After testing, he edits the engraving program (Z-depth correction). He switches back to MEM and presses CYCLE START. Result: Alarm WN57 appears. Machine does nothing.
To clear the WN57 message and return the PMC to its normal state, you must disable the override effective setting in the system parameters. Method 1: Via the PMC Parameter Screen Navigate to the screen on your FANUC controller. Select the [PMCPRM] (PMC Parameter) softkey. Look for the [SETTING] or [OVERRIDE] tab.