XLINK 500/100 Operations & Maintenance Manual page # 15
3.3.
Multi-function Button
There is a multi-function button installed on the front.
Briefly pressing this button will turn on the Wi-Fi.
The multi-function button may be used to reboot the unit. If the button is held down for
5 seconds, the red LED will come on. Keep holding the button until the red LED turns off
in order to reboot.
3.4.
Status LEDs
The status LEDs give information on how the unit is operating. The LED are multi-colored. The
following table describes the different colors and states of the LED.
Description
Left/Top LED
Right/Bottom LED
Button
Unit is operating
properly
Green blink every 5
seconds
Unit has a Setup or
operating error
Red blink every 3
seconds
Multi-function
button pressed
Fast flashing blue
Wi-Fi turned on but
no one connected
Blue blink every 3
sec
Active Wi-Fi
Connection
Solid Blue
Transmitting
Solid Blue
Power Fail
Imminent
Red flash 9Hz
Unit is in Test
mode
Green blink every
second
Red blink every
second
3.5.
RS-232
The RS-232 connection is a standard DB9-F connection for serial communications to a PC or other
device. The RS-232 port has a default baud rate of 9,600 (No parity, 8 data bits, 1 stop bit, HW
flow control) but other baud rates are supported.
DTR must be asserted to talk to the unit via RS-232.
Please note that the unit will NOT go into low power mode if DTR is asserted.
The RS-232 port may be used for connecting to a PC for setup, maintenance, and
troubleshooting. However, the micro USB port provides higher throughput and is the
recommended communication method.
The port may also be used for collecting data from Modbus sensors.
