Fanuc Wn57 Override Function Is Active [verified] Jun 2026
To help pinpoint exactly why this warning is showing up on your control, could you tell me:
(often labeled as "Override Effective" or similar) and change its setting to "Inactive" Direct Parameter Change
Example 2 — Rapid move reduction during setup
The message persists as a safety precaution. If this function is left active after maintenance: The machine may behave unpredictably. Safety interlocks might be bypassed. fanuc wn57 override function is active
The FANUC WN57 override function refers to a specific setting or code that can be activated in certain FANUC control systems. FANUC, a leading manufacturer of CNC systems, provides a range of control units and software that manage the operation of CNC machines. These machines are widely used in manufacturing for tasks such as cutting, drilling, and shaping materials.
Identify the you are using (e.g., Doosan, Makino)
Understanding the FANUC WN57 Override Function Active Message To help pinpoint exactly why this warning is
The operational impact of the WN57 alert is immediate and significant. The machine will likely enter a "feed hold" state or refuse to execute cutting commands at programmed speeds. In some configurations, the machine may lock the override at 0% or a minimal jogging speed, rendering it unable to perform automatic operations. This is a protective measure; without valid parameters, the tool path calculations could be erroneous, leading to tool breakage, part scrap, or collision with fixtures.
The WN57 message indicates that the CNC system is currently restricting or modifying its standard motion parameters because a specific override function has been triggered.
Understanding the FANUC WN57 "Override Function is Active" Alarm The FANUC WN57 override function refers to a
On newer FANUC i-Series (Series 0i-F, 31i-B5), overrides can be triggered via soft keys:
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: