Advantech UNO-1372G-J, User Manual

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9 UNO-1372G-J User Manual
Chapter 2
H
ardware
F
unctionality
Figure 2.3 Location of PCI Express Mini Card
2.10 LED Indicators
There are eight LEDs to indicate the status of the system power, RTC battery, stor-
age read/write, COM1~4 transmit/receive and programmable LED for user’s configu-
rations.
 PWR: Green means normal, orange means standby.
 BTR: Red means RTC battery low, check the RTC battery.
 HDD: Flashing green means storage reading/writing
 COM1~4: Flashing green means signals are being transmitted and received.

PL: User can configure the LED indicator’s behavior through GPO signal con-
trol.
2.11 Digital Input and Output
There are four digital inputs and four digital outputs configured from GPIO pins for
most on/off trigger and status readings.
2.11.1 Digital Input (Default setting: Dry contact)
 Input Channels: 4
 Input Voltage (Wet Contact), Configure SW6 to 1,3
– Logic 0: 0~3 VDC
– Logic 1: 10~30 VDC
 Input Voltage (Dry Contact), Configure SW6 to 2,4
– Logic 0: Open
– Logic 1: Shorted to GND
 Input Current