XBee connection examples Connect to the Daytime server
Digi XBee3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
46
Connect to the Daytime server
The Daytime server reports the current Coordinated Universal Time (UTC) value responding to any
user input.
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.
DL
(Destination
Address)
52.43.121.77 The target IP of the Daytime server.
Note Some carriers may require whitelisted IP addresses. If this IP is
not whitelisted by your carrier you will not be able to run this example.
DE
(Destination
Port)
0x232A The target port number of the Daytime server.
TD (Text
Delimiter)
0
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.
To communicate with the Daytime 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 enter the destination address of the daytime server, in the DL field, type 52.43.121.77 and
click the Write button.
7. To enter the destination IP port number, in the DE field, type 232A and click the Write button.
8. To disable text delimiter checking, in the TD field, type 0 and click the Write button.
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.
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