Fanuc Keep Relay Parameters Exclusive !!exclusive!! -

Provide examples of K-parameters used for tool change troubleshooting.

The screen will display the parameters in a matrix format, showing the byte number (e.g., K0000) and bits 7 through 0.

Changing exclusive keep relays requires caution, as incorrect settings can lock out machine functions, trigger severe alarms, or lead to collisions. Step-by-Step Modification Press the MDI button.

Note: The CNC will display a flashing "SW0100 PARAMETER WRITE ENABLED" alarm. This is normal. Step 2: Navigate to the Keep Relay Screen Press the hard key. fanuc keep relay parameters exclusive

Some machines require the X and Y axes to be at home before a turret can rotate. Changing a specific keep relay (often K17 in certain models) can bypass this requirement to save cycle time.

If a technician accidentally enables two mutually exclusive Keep Relays at the same time, the PMC ladder logic will usually do one of three things:

While standard parameter numbers change across control generations (such as the 0i-F, 16i/18i, or 31i-B), the fundamental operation of Keep Relays remains consistent. What Are FANUC Keep Relays? Provide examples of K-parameters used for tool change

Example: K928.7 and K929.0 are used to configure safe-state interfaces. B. User Keep Relays (K0–K899)

Ensure specific relay (keep-relay) parameters persistently remain enabled/unchanged and are not overwritten by automatic parameter loads, backups, or other user changes on FANUC CNC controls.

If a keep relay resets to its original state after a power cycle, it is likely being "written" to by a coil in the PLC ladder. In such cases, the relay cannot be changed manually without editing the ladder itself. Step-by-Step Modification Press the MDI button

If you have specific issues, such as , I can help you investigate further.

Builders use keep relays to "use or not use" specific machine units, such as enabling/disabling a chip conveyor, high-pressure coolant, or an automatic door. System Configuration: Certain keep relays (specifically

Enabling or disabling options (e.g., chip conveyors, bar feeders, rotary tables). Toggling safety interlock bypasses during maintenance.

: Navigate to the Setting Screen and set PARAMETER WRITE to 1 . Navigate to PMC Maintenance : Press the SYSTEM key. Select the PMC soft key. Choose PMCPRM (PMC Parameters) and then KEEP-RL .