Fanuc Wn57 Override Function Is Active !!hot!! -

"It’s ghosting," Marcus said. "Loose wire in the back. Probably the vibration from that heavy roughing cut you took earlier."

If feedrate overrides are locked into a lower threshold while spindle speeds remain high, chip loads will drop, potentially causing tool chatter, rubbing, and poor surface finishes.

In the FANUC control ecosystem, codes prefixed with a "WN" indicate rather than "AL" (Alarms). fanuc wn57 override function is active

Navigate to the screen displaying current feed rates and spindle speeds.

The message is a specific PMC (Programmable Machine Control) warning often encountered on FANUC Series 0i and 30i/31i/32i CNC systems. Unlike critical hardware alarms that halt all operations, WN57 is primarily a status notification informing the operator that a specific debug or maintenance mode has been left enabled. What is the WN57 Override Function? "It’s ghosting," Marcus said

Cycle the automation interface power or clear the robot's current cycle if it was interrupted mid-load. Step 3: Inspect the PMC Signal Status (Diagnosis Screen)

This method provides a direct approach for those familiar with FANUC's keep relay system. In the FANUC control ecosystem, codes prefixed with

A Keep Relay or parameter is forcing the machine to run at a reduced speed (e.g., during setup or dry run modes).

In many FANUC configurations, this function is tied directly to a system keep relay. The most common address used to control this function is . Go to SYSTEM -> PMC -> PMCPRM -> KEEPRL . Locate K906 and ensure bit 0 is set to 0 .

If the machine is cutting correctly and no other alarms exist, , not critical.

Switch the key back to and close the operator doors. Bypassing enclosure doors automatically flags override warnings on newer FANUC firmware. Step 4: Review PMC Keep Relays and Parameters