LED Status Indicators - Momentum 170ENT11001

Overview

This topic describes the LED Status indicators for the Momentum 170ENT11001 Ethernet communication adapter.

Understanding the LED Status Indicators

The Momentum 170ENT11001

Four LED indicator lights provide continuous operating information about the Momentum 170ENT11001 and its connection to the network.

LED	Light Name	Color	Description
RUN	Run Mode Indicator	Green	Indicates the module’s operating state
10T	LAN ACT-10 Indicator	Green*	Indicates 10 Mbps network activity Please see the note below.
100T	LAN ACT-100 Indicator	Amber*	Indicates 100 Mbps network activity Please see the note below.
ST	LAN Status Indicator	Green	Indicates the interface status

NOTE: *If using a 3Com hub, you may observe that the 10Base-T is amber, and the 100Base-T is green, or the reverse of the table above.

Interpreting Indicator and Adapter Status

The Run Mode and LAN status LED indicators provide continuous feedback as the the status of the run mode and the LAN.

RUN Indicator LED	LAN ST Indicator LED	Status
On (Steady)	On	Normal operation: Power is present from I/O base, and the adapter is ready for network communication. Adapter detects network activity. The flashing rate of the appropriate LAN ACT LED indicates the amount of activity. LAN ACT LED may appear as steady ON if network activity is high. Indicator is ON continuously during normal operation.
Off	Off	Interface is not powered.
N/A	Fast flash	Normal Ethernet initialization during power-up.
N/A	3 flashes, long off	Indicates no link pulse detected. The network cable is not connected or is defective. The hub/switch is not functioning correctly or not correctly configured.
N/A	4 flashes, long off	Duplicate IP address exists.
N/A	5 flashes, long off	No IP address: The adapter is attempting to obtain an IP address from a BOOTP server.
N/A	6 flashes, long off	Safe I/O mode - I/O is disabled. Device using default IP address.
On	7 flashes, long off	FDR server update failure - I/O is still running. You should check FDR server and/or cable connections to FDR server. The FDR server update failure condition will clear itself once communication to the FDR server is restored.
Off	7 flashes, long off	FDR server update failure on power up. You should check FDR server and/or cable connections to FDR server. You need to reboot the ENT after communication to the FDR server is restored.
N/A	8 flashes, long off	Safe I/O mode - I/O is disabled. Device using served IP address. I/O parameters were not set or not downloaded from the FDR server.

NOTE: For additional status information on any of these blink codes refer to the Web available system log, which is referenced in Accessing the Momentum 170ENT11001 Diagnostics.

Three of the four indicator LEDs on th Momentum 170ENT11001show operating status. The following tables describe the LAN ACT-10 indicator and LAN ACT-100 indicator status, the LAN ST indicator status, and the kernel mode status.

The LAN ACT-10 and LAN ACT-100 status indicators provide continuous feedback on network activity.

LAN ACT-10 Indicator LEDs	LAN ACT-100 Indicator LEDs	Status
On (Flashes)	On (Flashes)	The appropriate LAN ACT LED will blink with each packet transmitted or received.
Off	Off	Adapter is not detecting any network activity.

The LEDs provide feedback about the kernel mode status

RUN Indicator LED	LAN ST Indicator LED	Status
2 flashes, long off	N/A	Reserved for later use.
3 flashes, long off	N/A	Reserved for later use.
4 flashes, long off	N/A	No MAC address. The adapter's MAC address is not set. An internal hardware problem exists.
5 flashes, long off	N/A	Reserved for later use.
6 flashes, long off	N/A	The adapter's internal executive program has started, but cannot initialize the I/O base.
7 flashes, long off	N/A	The adapter does not have a valid executive program.
8 flashes, long off	N/A	The adapter's executive program has failed during execution.
9 flashes, long off	N/A	I/O Base failed during execution.

NOTE: For additional status information on any of these blink codes refer to the Web available system log, which is referenced in Accessing the Momentum 170ENT11001 Diagnostics.