Fanuc Wn57 Override Function Is Active _hot_ Today

: Since WN (Warning) alarms are often informational, the machine might still run, but specific safety or logic interlocks handled by the PMC could be bypassed by the active override. 【报警】FANUC PMC"WN57 OVERRIDE FUNCTION IS ACTIVE"

If a safety switch is partially engaged or failing, the PMC (Programmable Machine Control) registers a restricted safety state. 3. Dry Run or Machine Lock Activation

Check the physical knobs on the operator panel. Turn the and Spindle Speed Override switches back to exactly 100% . Ensure Rapid Traverse is set to normal operating limits. Step 2: Deactivate Setup Modes fanuc wn57 override function is active

Select the softkey, then navigate to STATUS or DIAGNOSIS .

The WN57 warning triggers when a specific safety or operational override function is actively modifying the CNC machine's movement behavior. Unlike standard operator overrides (such as turning a physical feedrate dial on the operator panel to 50%), WN57 points to an internal system override. : Since WN (Warning) alarms are often informational,

The override function enables the following capabilities:

The FANUC WN57 "OVERRIDE FUNCTION IS ACTIVE" alarm serves as an important reminder that a powerful debugging tool has been left in an active state. While the override function is invaluable during ladder program development and debugging, it must be disabled for normal production operation. Dry Run or Machine Lock Activation Check the

The K906.0 parameter is not merely a setting, but a "master key" that enables all the low-level signal-forcing behavior.

Verify that the mode selection switch is firmly seated in or Tape/DNC , not between positions.

: In many Fanuc PMC (Programmable Machine Control) ladder designs, WN57 (or similar window markers) signals that a forced I/O or override mode is engaged. This can be used to prevent the machine from starting a cycle if the override is set too low (stalling the tool) or too high for a specific setup.