Advantech UNO-3072 User Manual page 38

You can see the LED indicators to monitor power input situation. (Please
refer to Figure 2.12 for location of LED). If the voltage of power input
P1> 15 VDC, the P1 LED indicator will be enable (means the first power
input is used). It is the same for P2 LED indicator (to show if the voltage
of power input P2 > 15 VDC). When any voltage of P1 and P2 < 15VDC,
the Fault LED will be enable. It means that you don't use redundancy
power input. When you have two power inputs, the system will use the
power inputs with higher voltage.
Note: UNO-3072 provides built-in examples to show how to
monitor power input status. Refer to console mode
examples in
C:\Program Files\Advan-
tech\UNO\UNO_IsaDIO\Examples\Console.
(Please install DI/O driver from the UNO CD to use
these examples)
Figure 2.12: LED Locations to Monitor Power Input
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