Getting started with the XBee Cellular Modem Development Kit
XBee Cellular Modem examples
Digi XBee Cellular LTE Cat 1 Embedded Modem User Guide
20
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 zero 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
2. Open XCTU and click the
Configuration working mode
button.
3. Select a device from the
Radio Modules
list. XCTU displays the current firmware settings for
that device.
4. On the Configuration toolbar, click the
Default
button
to load the default values
established by the firmware, and click
Yes
to confirm.
5. Factory settings are loaded but not written to the device. To write them, click the
Write
button
on the toolbar.
6. To switch to TCP communication, in the
IP
field, select 1 and click the
Write
button
.
7. To enable the XBee Cellular Modem to recognize carriage return as a message delimiter, in the
TD
field, type
D
and click the
Write
button.
8. To enter the destination address of the echo server, in the
DL
field, type
52.43.121.77
and click
the
Write
button.
9. To enter the destination IP port number, in the
DE
field, type
2329
and click the
Write
button.