Verify that or Z-Axis Neglect modes are turned off. Step 3: Inspect PMC Parameters and System Variables
The machine will typically continue to run the program.
If the WN57 warning is preventing your machine from executing cycles at full speed, follow these diagnostic steps to locate the source: Step 1: Check Physical Panel Switches Inspect the Machine Control Panel (MCP). Ensure that: The dial is set to The Spindle Speed Override dial is set to The Rapid Traverse Override buttons ( ) are set to normal operating parameters. The Dry Run switch is toggled off. Step 2: Verify the Key Switch and Door Interlocks fanuc wn57 override function is active
: If you want to disable this feature to run at 100% speed, ensure all override dials are set to 100% and any "Dry Run" or "Override" toggle switches are turned off.
: Check the MTB's manual for specific Keep Relays (K) or Data Table (D) settings. Builders often use these to "latch" an override active for specific tasks. Verify that or Z-Axis Neglect modes are turned off
: When this function is active, it indicates that the machine's programmed feedrates or spindle speeds are being scaled by a manual selector or a software override. This is critical for operators to know if the machine is running at 100% of its programmed speed or a safer, reduced percentage (e.g., during Manual Handle Feed ).
In simple terms, Common Causes for the WN57 Override Ensure that: The dial is set to The
Look up the feedrate override signals ( for bits *OV0 to *OV7 ). A broken wire or failed rotary switch contact can send a continuous override signal to the control, even if the physical knob points to 100%. Summary for Operators
Because FANUC warnings are often customized by the Machine Tool Builder (MTB) via the PMC ladder logic, checking the internal status bits is highly effective: Press the function key on the FANUC MDI panel.
The WN57 message should disappear from the alarm screen immediately. Method 2: Via Keep Relay (K-Address)
The most basic cause is that the physical feed rate override dial or spindle speed override dial on the operator panel is set away from its standard