Fanuc Keep Relays (K-parameters) are non-volatile PMC (Programmable Machine Control) parameters used to toggle machine-specific functions. Unlike standard NC parameters that control motion, keep relays act as software "switches" that remain in their state (0 or 1) even after power is turned off. Core Functionality
Monitor the PMC: He watched the ladder in real-time. He saw that the "Exclusive" nature was a software "handshake." Adjust the Keep Relay: By toggling a different relay, K012.4cap K 012.4 fanuc keep relay parameters exclusive
To change an exclusive K-relay setting, you must typically follow these steps to unlock the system: Enable PWE: , press the OFFSET/SETTING key, find the "SETTING" soft key, and change PARAMETER WRITE (PWE) from 0 to 1. Navigate to PMC: hard key, then use the right arrow soft keys to find PMC MAINTENANCE Access Keep Relays: Select the KEEP RELAY Edit Values: He saw that the "Exclusive" nature was a software "handshake
Navigate to PMC Maintenance: Press the System key, then use the right-hand arrow soft keys to find PMC Maintenance followed by the Keep Relay soft key. Fanuc PMC - Keep Relays (K Parameter) Explained in English
Mode Restrictions: Some machines require the Emergency Stop to be depressed or the PMC to be stopped before certain system bits can be modified. Fanuc PMC - Keep Relays (K Parameter) Explained in English