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

RM100 and FP20 Smart Switch LEDs

The following table describes the device status LEDs on the DeltaV RM100 and FP20 Smart Switches.

Table: Device Status LEDs on DeltaV RM100 and FP20 Smart Switches
LED Correct Operating Condition Fault Indication Possible Cause
Green/yellow P (Power)
  • On (green continuous) - Supply voltages are on.
  • On (yellow continuous) - Only one supply voltage is on.
Off Supply voltage is off or too low.
Green RUN
  • On (green continuous) - Device is ready for operation.
  • Flashing (green) - Device is booting.
Off Device is in reset mode.
Green/yellow LOCK
  • On (green continuous) - Device is locked.
  • On (yellow continuous) - Device is temporarily unlocked but will enter the locked state after the lockdown timer expires.
  • Flashing (green) - Device passes into the locked state.
Off Device is in an unlocked state.
Red FAULT Off - not reporting an error. On (red continuous) Reporting an error.

The following table describes the port status LEDs on the DeltaV RM100 and FP20 Smart Switches

Table: Port Status LEDs on DeltaV RM100 and FP20 Smart Switches
LED Correct Operating Condition Fault Indication Possible Cause
Green/LS (Link Status)
  • On (green continuous) - Valid link or connection.
  • Flashing green once per second - Port is in standby.
  • Flashing green three times per second. - Port is locked by the One-Click Lockdown application (DeltaV version 10.3); the Smart Switch Command Center (DeltaV version 11.3 and 12.3) higher); or, the Network Device Command Center (DeltaV version 13.3 and higher).
Off No valid link or connection.
Yellow/DA (Data) Flashing yellow - Receiving data. Off Not receiving data.