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3.4 LED Indicators
The NCOM-113-M has 6 LED indicators, as described in the following table:
LED
Name
LED
Color
LED Function
PWR
Red
Steady on: Power is on and functioning normally.
Steady off: Power is off.
Flashes two times to indicate the device is ready.
Link
Yellow
Steady on: The Ethernet link has established.
Steady off: Ethernet cable is disconnected.
Blinking: Ethernet data transmission is occurring.
Speed
Green
Steady on: The device is connected to a 100M Ethernet
connection.
Steady off: The device is connected to a 10M Ethernet
connection.
Tx
Green
Blinking: The serial port is transmitting data.
Rx
Yellow
Blinking: The serial port is receiving data.
Mode
Green
Red
Steady off: The port is working in RS-232 mode.
Green LED steady on: The port is working in RS-422 or RS-
485 full duplex (4-wire) mode.
Red LED Steady on: The port is working in RS-485 half
duplex (2-wire) mode.
