9. LED Indicators

The ETH-100 unit contains many different LED indicators, each of which conveys important information about the status of the unit, connected drives and Ethernet network. These LEDs and their functions are summarized here.

9.1 Module and Ethernet Indicators

The module and Ethernet indicators are located between the MMI port and the Channel A drive port. Figure 8 indicates the functions of these LEDs (perspective is with MMI port to the left of the LEDs).

ACT (Ethernet ACTivity)

NS (Network Status)

Flashes red when network

Currently reserved

activity is detected

 

LNK (Ethernet LiNK)

MS (Module Status)

Solid green when valid

Currently reserved

network link exists

 

Figure 8: Module and Ethernet Indicators

9.2 Drive Connector Indicators

Each drive communication channel RJ45 connector contains two integrated green LEDs. Figure 9 indicates the functions of these LEDs.

Network Access

Drive Link

Blinks in 0.1s-long bursts

Solid green when a logical

when channel is accessed

connection exists with the

by Ethernet client

attached drive

Figure 9: Drive Connector Indicators

The Network Access indicator is useful for confirming that a specific drive channel is being accessed correctly by the Ethernet client (master), while the Drive Link indicator provides an easy method of determining that the ETH-100 and drive are successfully exchanging data, independent of Ethernet activity.

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