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XBee connection examples Connect to the Daytime server
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide 32
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)
232A (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 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 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.