9 Chapter 2
2.2 LEDs
LEDs to display the power, network, serial and programmable LED status
are located on the front panel of UNO-1019, and each of them has its own
specific meaning, as shown in the table below.
2.3 Network Connections
UNO-1019 is equipped with 2 x 10/100 Mbps TX Ethernet ports. The
Ethernet ports provide standard RJ-45 jack, and LED indicator on front
panel shows link (green) and network speed (yellow).
Table 2.1: UNO-1019 LED Definitions
LED Color Status Description
PWR
RED On System power is on
Off System power is off
D1~D3
Green User programmable
Serial TX
Yellow On Serial port is transmitting data
Off Serial port is not transmitting data
Serial RX
Green On Serial port is receiving data
Off Serial port is not receiving data
Networking
Link
Green On Connected to network
Off Not connected to network
Flash Data is transmitting/receiving
Networking
Speed
Yellow On Link to 100 Mbps network
Off Link to 10 Mbps network
