Fanuc Keep Relay Parameters Exclusive Portable Page

High-pressure coolant stops working randomly, but no alarm triggers. Debugging this takes hours because the ladder shows the same bit in two unrelated rungs.

, meaning their functions are exclusive to the specific machine model or manufacturer. 1. Understanding Exclusive Functions fanuc keep relay parameters exclusive

Some Keep Relays are exclusively "write-once" or "latching." For example, a Keep Relay that enables a paid option (like high-speed machining) may be set to 1 by an OEM field engineer and then permanently locked. Even if you try to change it back to 0 , the ladder logic will ignore the change due to a memory-protect key or a secondary hardware dongle. High-pressure coolant stops working randomly, but no alarm