Parameters Exclusive | Fanuc Keep Relay

Unlike D (Data) registers which can be temporary, or R (Internal Relay) bits which are volatile, K parameters are architectural . If one bit is changed, no other feature in the machine should use that same bit for a different purpose.

Selecting exclusively between an optical tool setter and a radio-frequency workpiece probe. fanuc keep relay parameters exclusive

He flipped to the PMC section and found a handwritten note scrawled in the margin: “Keep Relay K12.3 – The Apprentice’s Lock.” Elias navigated to the PMC parameters. There it was: cap K 0012 was set to Unlike D (Data) registers which can be temporary,

Typically reserved for core Fanuc functions, basic system configurations, and internal PMC diagnostics. He flipped to the PMC section and found

OEMs often use specific Keep Relays as "exclusive" switches to toggle between different machine features—such as enabling a 4th axis, switching between manual and automatic tool measurement, or locking out certain door interlocks for maintenance. Safety & Interlocks:

To change a keep relay, follow this strict operational procedure: Step 1: Enable Parameter Write Enable (PWE) Press the mode button on the operator panel. Press the OFFSET/SETTING function key on the CRT/LCD panel. Locate the SETTING softkey. Move the cursor to PARAMETER WRITE (PWE). Change the value from 0 to 1 (or press the ON: 1 softkey).

Because they do not reset, a mistake made in a K-relay will persist until manually changed back, even if the machine is turned off. Conclusion