Fanuc Wn57 Override Function Is Active !!top!! Jun 2026

The message is a specific Programmable Machine Control (PMC) alarm found on Fanuc systems, indicating that the system's "Override Function" (倍率功能) has been enabled.

Unlike a critical red alarm that indicates a crash or a hardware failure, WN57 is a warning (hence the "W" prefix). However, it behaves like a barrier; it prevents the operator from executing certain commands, starting a cycle, or editing programs. This article provides a deep technical dive into what this alarm means, why it appears, how to safely clear it, and—most importantly—how to prevent it from disrupting your workflow. fanuc wn57 override function is active

“The machine is safe to run if I ignore WN57.” The message is a specific Programmable Machine Control

"Wait a second," Elias muttered. "The alarm isn't hardware. It's in the program." it behaves like a barrier