DeltaV MD20 and MD30 Smart Switch LEDs

Types of LEDs on the MD20 and MD30 Smart Switches

There are two types of LEDs on the DeltaV MD20 and MD30 Smart Switches: device status LEDs that describe the status of the MD20 and MD30 base switches and display status LEDs that describe the status of the ports on the media modules that plug into the base switches.

Device status LEDs

Table: DeltaV MD20 and MD30 device status LEDs
LED correct operating condition	Fault indication	Possible causes and corrective action
P (Power)-On (green)	Off	Internal supply voltage is too low.
P1 (Power 1)-On (green)	Off	Supply voltage 1 is less than 18 V.
P2 (Power 1)-On (green)	Off	Supply voltage 2 is less than 18 V.
LOCK-On: Green (continuous)–The device is locked. Yellow (continuous)–The device is temporarily unlocked but will be locked after the lockdown timer has expired. Green(flashing)–The device is entering the lockdown state.	Off	The device is unlocked.
RL1 (Relay 1)–Off. The signal contact is closed; not reporting an error.	Red (continuous)	Signal contact is open; reporting an error.
	Yellow (continuous)	Signal contact is open; the manual setting is active.
RL2 (Relay 2)–Off. The signal contact is closed; not reporting an error.	Red (continuous)	Signal contact is open; reporting an error.
	Yellow (continuous)	Signal contact is open; the manual setting is active.
RUN-On: Green (continuous)–The device is ready for operation. Green (flashing)–The device is booting.	Off	The device is in reset mode.
TEST-On: Green(continuous)–LED test activated.	Off	LED test not activated.
ACA/Flash Access (green)–Displays the ACA flash access with the Run LED.

Display status LEDs

Every DeltaV media module that plugs into an MD20 or MD30 base switch, has one LED per port. The LED selected on the base switch determines the type of information displayed about the media modules' ports. For example, if you select the L/D LED on the base switch, the LEDs on the media modules display the connection status for the ports. Press the Select button to cycle through the LEDs on the base switch.

Table: Display status LEDs on the MD base switches and meaning on the media modules
Display status LED on the MD base switches	Meaning on media module
L/D (Data/link status) The port LEDs on the media modules display the connection status.	Ports glowing green–valid connection. Ports not glowing green–no valid connection. Ports flashing green once a period–port is switched to standby. Ports flashing green three times a period–port is locked by the Network Device Command Center application. Ports flashing yellow–port is receiving data.
FDX (full duplex) The port LEDs on the media modules display the half duplex or full duplex connection status	Ports glowing green–full duplex is active. Ports not glowing green–half duplex is active.
1000 (10/100/1000Mbit/sec) The port LEDs on the media modules display the transmission speed.	Ports glowing green–100Mbit/sec is active. Ports not glowing green–10Mbit/sec is active. Ports glowing yellow–1000Mbit/sec is active.
AN (autonegotiation) The port LEDs on the media modules display the autonegotiation setting.	Ports glowing green–autonegotiation is active. Ports not glowing green–autonegotiation is inactive.
TP (twisted pair/fiber-optic) The port LEDs on the media modules display the media type.	Ports glowing green–twisted pair ports. Ports glowing yellow–fiber-optic ports
PoE (Power over Ethernet) The port LEDs on the media modules display the Power over Ethernet status.	Ports not glowing–No PoE port or PoE disabled. Ports glowing yellow–PoE port searching for terminal device (PD); PoE status is searching. Ports glowing green–PoE port supplying terminal device (PD); PoE status is delivering power.