# Run LED (1)

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This LED reflects the status of the CoE (CANopen over EtherCAT) communication.

LED State | Indication | Description
Off | INIT | Device in ‘INIT’-state (or no power)
Green | OPERATIONAL | Device in ‘OPERATIONAL’-state
Green, blinking | PRE-OPERATIONAL | Device in ‘PRE-OPERATIONAL’-state
Green, single flash | SAFE-OPERATIONAL | Device in ‘SAFE-OPERATIONAL’-state
Red a) | EXCEPTON state (Fatal Event) | -

a) If RUN and ERR turns red, this indicates a fatal event, forcing the bus interface to a physically passive state.