Logical unit device status flags Power Supply: BIT 0 - CLEAR: Power supply functioning normally. SET: Power supply malfunctioning. BITS 1-5 - Reserved (Set to 0). BIT 6 - CLEAR: Power supply is ON. SET: Power supply is OFF. BIT 7 - CLEAR: Power supply IS present. SET: Power supply is NOT present. == 0xff - Status unknown. Fan: BIT 0 - CLEAR: Fan functioning normally. SET: Fan malfunctioning. BITS 1-5 - Reserved (Set to 0). BIT 6 - CLEAR: Fan is ON. SET: Fan is OFF. BIT 7 - CLEAR: Fan IS present. SET: Fan is NOT present. == 0xff - Status unknown. Temperature Sensor: BIT 0 - CLEAR: Temp. sensor functioning normally. SET: Temp. sensor malfunctioning. BIT 1 - 3: If == 0, Temp. within safe range. If == 2, Cold Temp. Warning. If == 3, Hot Temp. Warning. If == 4, Cold Temp. Limit Exceeded. If == 5, Hot Temp. Limit Exceeded. BIT 6 - CLEAR: Temp. Sensor is Activated. SET: Temp. Sensor is NOT Activated. BIT 7 - CLEAR: Temperature sensor IS present. SET: Temperature sensor is NOT present. == 0xff - Status unknown. UPS: BIT 0 - CLEAR: Unit functioning normally. SET: Unit malfunctioning. BIT 1 - CLEAR: AC Power present. SET: AC Power NOT present. BIT 2 - 3: If == 0, battery fully charged. If == 1, battery not fully charged. If == 2, battery charge critically low. If == 3, battery completely drained. BITS 4-5 - Reserved (Set to 0). BIT 6 - CLEAR: UPS is ON. SET: UPS is OFF. BIT 7 - CLEAR: UPS IS present. SET: UPS is NOT present. == 0xff - Status unknown. Battery: BIT 0 - CLEAR: Battery functioning normally. SET: Battery malfunctioning. BIT 1 - CLEAR: Battery charging OFF (or trickle). SET: Battery charging ON. BIT 2 - 3: If == 0, battery fully charged. If == 1, battery not fully charged. If == 2, battery charge critically low. If == 3, battery completely drained. BITS 4-5 - Reserved (Set to 0). BIT 6 - CLEAR: Battery-backup is enabled. SET: Battery-backup is disabled. BIT 7 - CLEAR: Battery IS present. SET: Battery is NOT present. == 0xff - Status unknown. Voltage Sensor: BIT 0 - CLEAR: Voltage sensor functioning normally. SET: Voltage sensor malfunctioning. BIT 1 - 3: Current Voltage Sensor State: If == 0, Voltage within acceptable range. If == 2, Low Voltage Warning. If == 3, High Voltage Warning. If == 4, Low Voltage Limit Exceeded. If == 5, High Voltage Limit Exceeded. BIT 4 - 5: Reserved. BIT 6 - CLEAR: Voltage Sensor is Activated. SET: Voltage Sensor is NOT Activated. BIT 7 - CLEAR: Voltage sensor IS present. SET: Voltage sensor is NOT present. == 0xff - Voltage Sensor Status unknown. Current Sensor: BIT 0 - CLEAR: Current sensor functioning normally. SET: Current sensor malfunctioning. BIT 1 - 3: Current Current Sensor State: If == 0, Current within acceptable range. If == 3, Over Current Warning. If == 5, Over Current Limit Exceeded. BIT 4 - 5: Reserved. BIT 6 - CLEAR: Current Sensor is Activated. SET: Current Sensor is NOT Activated. BIT 7 - CLEAR: Current sensor IS present. SET: Current sensor is NOT present. == 0xff - Current Sensor Status unknown. Door: BIT 0 - CLEAR: Door OK. SET: Door, door lock, or door sensor malfunctioning. BIT 1 - CLEAR: Door is shut. SET: Door is open. BITS 2-5 - Reserved (Set to 0). BIT 6 - CLEAR: Door lock engaged. SET: Door lock NOT engaged. BIT 7 - CLEAR: Door IS present. SET: Door is NOT present. == 0xff - Status unknown. Speaker: BIT 0 - CLEAR: Speaker functioning normally. SET: Speaker malfunctioning. BITS 1-5 - Reserved (Set to 0). BIT 6 - CLEAR: Speaker is ON. SET: Speaker is OFF. BIT 7 - CLEAR: Speaker IS present. SET: Speaker is NOT present. == 0xff - Status unknown. Slot: BIT 0 - CLEAR: Slot sense circuitry functioning normally. SET: Slot sense circuitry malfunctioning. BIT 1 - CLEAR: Device in slot has not been marked 'needing replacement' or a replacement drive has been inserted. SET: Device in slot has been marked BAD and is awaiting replacement. BIT 2 - CLEAR: Slot is activated so that drive can be accessed. SET: Slot NOT activated. BITS 3-5 - Reserved (Set to 0). BIT 6 - CLEAR: Slot is NOT ready for insertion/removal. SET: Slot is ready for insertion/removal. BIT 7 - CLEAR: Device inserted in slot. SET: Slot is empty. == 0xff - Status unknown.