American Fibertek Net I/O N-111 - Manual (Page 14)

14
LED indicators
Within 5 seconds of the AC power cable being connected, the N-111 will perform a test
of its front panel indicator LEDs. The LEDS will first light green, then red, then turn off.
Once the sequence has finished the LEDs will resume their normal function and the unit
will be ready for use.
The front panel of the N-111 has several LED indicators. The action of individual LEDS
is as follows:
Power indicator LED
This LED indicates that power is applied to the unit. During initial powering up of the
unit, the power LED will briefly flash green, then red for a moment. It should then light
green and remain green while the unit is on.
Status LED
This LED indicates the status of the aux contact output. During initial powering up of the
unit, this LED will briefly flash green, then red for a moment. It will then be illuminated
green if the aux contact output is active, or off when the aux contact output is not active.
Alarm LED
This LED indicates the status of the alarm input. During initial powering up of the unit,
this LED will briefly flash green, then red for a moment. It will then be illuminated red if
the alarm input is active, or off when the alarm input is not active.
Serial LED
This LED indicates the status of the serial port. During initial powering up of the unit, this
LED will briefly flash green, then red for a moment. During operation, this LED will flash
green when serial data is being transmitted out of the serial port, red when serial data is
being received into the serial port, and off when there is no port activity.