Okuma Alarm A-1107 – Major FL-net Error
Alarm A-1107 indicates a critical failure during initialization of the FL-net communication card.
FL-net (Factory Local Network) is the industrial communication network used for high-speed data exchange between the CNC, PLC, and other control units. When this alarm appears, the FL-net interface failed to start correctly or detected a fatal communication fault.
As a result:
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Communication between CNC and PLC may be interrupted
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Loader or peripheral devices may not respond
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Machine startup may be incomplete
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Network-dependent functions may be disabled
Possible causes include:
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FL-net board hardware failure
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Initialization error during power-up
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Corrupted firmware
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Network configuration mismatch
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Loose or damaged communication cable
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Power supply instability
Recommended actions:
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Power off the machine completely and restart.
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Check FL-net board LEDs for abnormal status.
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Inspect network cables and connectors.
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Verify network parameters and node settings.
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Reseat or replace the FL-net card if necessary.
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Contact authorized service if the error persists.
Because this is classified as a “Major” error, normal operation may not be possible until the issue is resolved.
