Digi XB3-C-A2-UT series, Руководство пользователя, Страница: 22 / 151

Getting started with the XBee Smart Modem Development Kit Connect to the echo server
Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 22
Connect to the echo server
This server echoes back the messages you type.
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 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 Connect the hardware .
2. Open XCTU and Add a device .
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 Smart Modem 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.