Digi XBee 3 User Manual

XBee connection examples Connect to the Echo server
Digi XBee® 3 Cellular LTE Cat 1 AT&T Smart Modem User Guide
23
Connect to the Echo server
This server echoes back the messages you type.
Note For help with debugging, see Debugging.
The following table explains the AT commands that you use in this example.
At
command Value Description
IP (IP
Protocol)
1 Set the expected transmission mode to TCP communications.
TD
(Text
Delimiter)
D (0x0D)
The text delimiter to be used for Transparent mode, as an ASCII hex
code. No information is sent until this character is entered, unless the
maximum number of characters has been reached. Set to 0 to disable
text delimiter checking. Set to D for a carriage return.
DL
(Destination
Address)
52.43.121.77 The target IPaddress of the echo server.
DE
(Destination
Port)
0x2329 The target port number of the echo server.
To communicate with the Echo server:
1. Ensure that the device is set up correctly with the SIM card installed and the antennas
connected as described in Connect the hardware.
2. Open XCTU and Add a device to XCTU.
3.
Click the Configuration working mode button.
4. Select a device from the Radio Modules list. XCTU displays the current firmware settings for
that device.
5.
To switch to TCP communication, in the IP field, select 1 and click the Write button .
6. To enable the XBee to recognize carriage return as a message delimiter, in the TD field, type D
and click the Write button.
7. To enter the destination address of the echo server, in the DL field, type 52.43.121.77 and click
the Write button.
8. To enter the destination IP port number, in the DE field, type 2329 and click the Write button.
Note XCTU does not follow the standard hexadecimal numbering convention. The leading 0x is
not needed in XCTU.
9.
Click the Consoles working mode button on the toolbar to open a serial console to the
device. For instructions on using the Console, see the AT console topic in the XCTU User Guide.
10.
Click the Open button to open a serial connection to the device.

Digi XBee 3 Specifications

General

Brand	Digi
Model	XBee 3
Category	Modem
Language	English