Toshiba ETH-100 User Manual

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9. LED Indicators 
The interface contains several different LED indicators, each of which conveys 
important information about the status of the unit and connected networks.  
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 6 indicates the functions of these LEDs. 
 
MS (Module Status) 
Currently reserved
 
NS (Network Status)
Currently reserved
 
LNK (Ethernet LiNK) 
Solid green when valid 
network link exists
 
ACT (Ethernet ACTivity)
Flashes red when network 
activity is detected
 
 
Figure 6: Module and Ethernet Indicators 
 
9.2  ASD Port Indicators 
Each ASD port RJ45 connector contains two integrated green LEDs.  Figure 7 
indicates the functions of these LEDs. 
 
Drive Link 
Solid green when a logical 
connection exists with the 
attached drive
 
Network Access 
Blinks in 0.1s-long bursts 
when drive is accessed by 
primary network master
 
 
Figure 7: ASD Port Indicators