User`s guide

Chapter 11: Rackmount Ethernet Master
LED Panel
LED Panel
The LEDs on the Master Board can be seen through a clear panel on the front of the
REM0-5210 and on the rear of the REM0-5200 and REM0-5220.
Functions of the LEDs are shown below.
LED Panel
LED Function
I1 ON when receiving and processing host commands.
I2 When flashing (downloading) operating system software, this LED will be ON. In
normal operation, if an error is detected in the master program, the LED will be ON.
Normally this LED is OFF.
I3 This LED will alternately flash ON / OFF with LED I4 while the master software is
starting up. This will last for about 3 seconds. Afterwards, this LED indicates TNET
communications. When no TNET satellites are detected, the LED will be blinking at a
slow rate. It will actually look dim at this rate. If TNET satellites are detected, the LED
will be turned ON more during most of the blinking and will look brighter.
I4 This LED will alternately flash ON / OFF with LED I3 while the master software is
starting up. This will last for about 3 seconds. This LED should be ON during normal
operations. If it is not ON, the software has failed to properly start.
I5 (BSE) This LED will be ON when the Ethernet controller is being accessed. If data
packets are received or transmitted this LED will be ON briefly.
I6 (RX) This LED will be ON whenever Ethernet data packets are received for the
master.
I7 (LNK) This LED will be ON if the master is properly connected and communicating to
a hub.
I8 (TX) This LED will be ON whenever the master transmits Ethernet data packets.
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