Fanuc Keep Relay Parameters Exclusive

In Fanuc CNC systems, Keep Relays (K-parameters) are specific memory addresses that store binary (0 or 1) settings to control machine behavior or enable/disable PLC functions. Unlike standard NC parameters, Keep Relays are often defined by the Machine Tool Builder (MTB)

Identify your target address (e.g., K0005). Bits are counted right to left , from 0 to 7. Type the new value ( ) and press : Return to the setting screen and set PARAMETER WRITE Common Keep Relay Applications fanuc keep relay parameters exclusive

Document procedures

Secure the System

: Once finished, return to the Setting screen and change "Parameter Write" back to 0 to prevent accidental changes. Implementation Variability In Fanuc CNC systems, Keep Relays (K-parameters) are

Mastering FANUC Keep Relays: The Critical Concept of Exclusive Parameters

What Makes a Keep Relay “Exclusive”?

Why Exclusivity Matters

User Keep Relays (K0–K99)

: Typically reserved for the machine builder to customize operations like chuck clamping or turret rotation. Type the new value ( ) and press