differ because they are non-volatile. They retain their status (0 or 1) even after power loss.
Keep Relays function as electronic toggle switches for the machine's ladder logic. Machine Tool Builders (MTBs) program these relays into the PMC to allow end-users and service technicians to modify machine behavior without editing the actual ladder code. Common use cases include:
Use the cursor keys or type the address (e.g., K0002 ) and press the (Number Search) softkey. fanuc keep relay parameters exclusive
Improperly altering exclusive keep relay parameters breaks the logical handshake rules established by the Machine Tool Builder (MTB). This can result in several failure modes:
: Enter 1 to enable or 0 to disable the function. differ because they are non-volatile
A is a specialized, non-volatile bit in the FANUC PMC ladder logic. Unlike regular internal relays ( ) or input/output relays (
Keep relays are organized in an , where each address (e.g., K0 ) contains eight individual bits labeled 0 through 7 . Machine Tool Builders (MTBs) program these relays into
If you have lost the password or the OEM is out of business, here are the legal ways to gain exclusive access to Keep Relays:
K0012.1 = 1: Detachable 4th Axis indexer installed (Plugs and pressure switches monitored).