NXU-2B Operations Manual
3-9
Interoperability Now!
3.4
Configuration via Serial Port
The serial port may be used for configuration if it is not practical to configure the NXU-2B via a
web browser, or you are more accustomed to using this method.
Connect a standard serial cable from a suitable COM port on your PC to the RS-232 connector
on the NXU-2B rear panel. A standard DB-9 straight-through cable (which should work on most
PCs) is included with the NXU-2B. The NXU-2B comes pre-configured with the serial port set
at 9600 baud, 8 data bits, no parity, and 1 stop bit. No hardware flow control is used or needed.
In order to configure the NXU-2B you will need to know which COM port you are connected to
on your PC.
3.4.1
Configuration Using an RS-232 Terminal Program
If you are configuring via Serial Port, you will need a terminal program to communicate with the
NXU-2B. Any suitable Windows terminal program such as PuTTY, Tera Term, or Windows
Terminal may be used.
With the serial cable connected and the PC running a terminal program set to the above
parameters, apply power to the NXU-2B. Wait at least 10 seconds after power up of the NXU-
2B and type +++ (three plus signs) on your keyboard. You must type all 3 ‘+’ characters within
1 second. Do not type anything else, only the 3 ‘+’ characters. The NXU-2B should respond with
‘OK’. At this point, you are in
Command Mode
, and you will be able to issue configuration
commands to the NXU-2B.
NOTE: If you type the three plus signs into your terminal program and they appear
on the screen, the NXU-2B is already in the COMMAND Mode.
3.4.2
Configuration Mode Command Set
Type HELP and press the ENTER key. The NXU-2B should respond with:
Summary of Contents for NXU-2B
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