Verify that your Rapid Override (RT) and Feedrate Override dials are set to standard production percentages (e.g., 100%) and are not stuck between detents. Step 2: Verify Robot / Automation Status If your machine uses automation:
The Machine Tool Builder defines exactly what triggers WN57 within the PMC ladder logic. A specific G-byte (interface signal sent from the PLC to the CNC) is turned on when certain conditions are met, clamping the override values to a safe threshold. Step-by-Step Troubleshooting Guide
While this function is active, the PMC may not operate according to its standard programmed logic because signals are being "overridden" for testing purposes. It is generally recommended to disable this function once debugging is complete to ensure normal machine operation . fanuc wn57 override function is active
If the CNC is integrated with a robotic loader, the robot controller may look for a "Machine Cycle Complete" or "Normal Run State" signal. If WN57 alters the expected signal path, the robot may pause, causing a cell-wide bottleneck.
If your machine displays the WN57 warning and refuses to run at normal production speeds, follow these steps to diagnose and clear the message. Step 1: Check Physical Switches and Modes Verify that your Rapid Override (RT) and Feedrate
A technician may have left the signal override active after checking the electrical system or I/O signals. Safety Bypass:
Troubleshooting the FANUC WN57 Override Function Is Active Warning If WN57 alters the expected signal path, the
The WN57 alarm should never be ignored or simply cleared without proper investigation. Operating a machine with the override function active poses several risks:
When WN57 is active, the machine will still execute commands, but cycle times will change. If the override is set low (e.g., 50%), your cycle times will double. If it is set high, it poses a risk of tool breakage or part damage due to excessive feed speeds. To help troubleshoot this further, could you tell me: