Checking Out and Troubleshooting Your DeltaV System > Checking Out Your System > Step 3. Checking the LED Indicators on Each Device

DeviceNet Card LEDs

The following table describes the LEDs for the DeviceNet and Series 2 DeviceNet cards.

Table: DeviceNet Card LEDs
LED Correct Operating Condition Fault Indication Possible Cause Corrective Action
Green - Power On Off 1. System power is not supplied to unit. Possible line power problem. 1. Check supply power and connections.
2. Internal fault. 2. Contact technical support.
Red - Error Off On (continuous) 1. Controller is not scanning card. 1. Check controller operation.
2. Unit failed self-test. 2. Contact technical support.
Flashing 1. Controller is not scanning card. 1. Check controller operation.
2. Address conflict. 2. Replace card with known good card of same type; contact technical support.

Yellow - Port 1

Port 2 (reserved)

On Off 1. No communications. 1. Check connections, cable, and external device.
2. Port not enabled 2. Enable port.
3. No configuration for this port. 3. Configure port.
Flashing Communication error on this port. Check connections, cable, and external device.