Fanuc Keep Relay Parameters Exclusive

When set to 1, it becomes impossible to modify these screens, even if they are visible. 3. How to Access and Modify Keep Relays

This is not a flaw; it is an exclusive design feature. Fanuc and machine tool builders intentionally sequester Keep Relays because changing them can alter safety logic, bypass limit switches, or fundamentally change the operational sequence of the machine. By making them exclusive to trained service technicians or advanced integrators, Fanuc prevents accidental toggling that could lead to crashes, injury, or non-compliant machine behavior. fanuc keep relay parameters exclusive

In PMC ladder logic maintenance, specific addresses may be processed using Exclusive-OR When set to 1, it becomes impossible to