
User’s Manual of ICS-2x00T Serial Device Server Series
19
2.1.3 LED Indications
The front panel LEDs indicate instant status of power and system status, fan status, port links and data activity; they help
monitor and troubleshoot when needed.
LED indication
■
System
LED
Color
Function
PWR 1
Green
Lights
Power 1 is activated.
PWR 2
Green
Lights
Power 2 is activated.
Fault
Red
Lights
Indicates either Power 1 or Power 2 has no power.
SYS
Green
Blinks
System is booting.
Lights
System is ready.
I/O
Red
Blinks
Digital I/O event is triggered.
■
10/100BASE-TX/100BASE-FX Port
LED
Color
Function
LNK/
ACT
Green
Lights
Indicates that the port is linked up.
Blinks
Indicates that the switch is actively sending or receiving data over
that port.
■
Serial Ports (P1~P4)
LED
Color
Function
TX
Green
Blinks
Serial port is transmitting data.
RX
Amber
Blinks
Serial port is receiving data.