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

Sequence of Events Card LEDs

The following table describes the LEDs for the Sequence of Events card.

Table: Sequence of Events Card LEDs
LED Correct Operating Condition Fault Indication Possible Cause Corrective Action
Green - Power On Off 1. Power is not supplied to unit. 1. Check supply power and connections.
2. Internal fault. 2. Contact technical support.
Red - Error Off On (continuous) Communications error. Check connections, cable, and external device.
Flashing Address conflict. Replace card with known good card of same type; contact technical support.