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

Profibus DP Card LEDs

The following table describes the LEDs for the Profibus DP, Series 2 Profibus DP (Simplex) and Series 2 Plus Profibus DP (Simplex and Redundant) cards.

Table: Profibus DP Card LEDs
LED Correct Operating Condition Fault Indication Possible Cause Corrective Action
Green - Power
  • Profibus DP and Simplex Series 2 Profibus DP- On
  • Series 2 Plus Profibus DP Redundant:
    • Active - On
    • Standby - Flashing
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.