User`s manual

UC-7400 Hardware User’s Manual Appearance and Dimensions
LED Indicators
The UC-7408/7410/7420 have 12 LED indicators on the top panel. The UC-7402 has only 4 LED
indicators on the top panel (it does not have a serial port indicator). Refer to the following table for
information about each LED.
LED Name Color Meaning
Ready Green Power is ON, and system is ready (after booting up)
Yellow 10 Mbps Ethernet connection
LAN1, LAN2
Green 100 Mbps Ethernet connection
Yellow Console port is receiving RX data from the serial device.
Console
Green Console port is transmitting TX data to the serial device.
Yellow Serial port is receiving RX data from the serial device.
P1, P2, P3, P4,
P5, P6, P7, P8
Green Serial port is transmitting TX data to the serial device.
Reset-type Buttons
The UC-7400 computers have two reset-type buttons. The button labeled Reset has the same effect
as switching off the power and then switching the power back on. The button labeled Reset to
default returns the UC-7400 to its factory default configuration.
Reset Button
Pressing the Reset button initiates a hardware reboot. The button plays the same role as a desktop
PC’s reset button.
In normal use, you should NOT use the Reset Button. You should only use this function if the
software is not working properly. To reset an embedded Linux system, always use the software
reboot command />reboot to protect the integrity of the data being transmitted or processed.
Reset to Default Button
Press the Reset to default button continuously for at least 5 seconds to load the factory default
configuration. After the factory default configuration has been loaded, the system will reboot
automatically. The Ready LED will blink on and off for the first 5 seconds, and then maintain a
steady glow once the system has rebooted.
We recommend that you only use this function if the software is not working properly and you
want to load factory default settings. To reset an embedded Linux system, always use the software
reboot command />reboot to protect the integrity of data being transmitted or processed. The
Reset to default button is not designed to hard reboot the UC-7400.
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