Connect to a TCP/IP address
The XBee 3 Cellular LTE-M/NB-IoT can send and receive TCP messages while in Transparent mode; see Transparent operating mode.
Note You can use this example as a template for sending and receiving data to or from any TCP/IP server.
Note For help with debugging, see Debugging.
The following table explains the AT commands that you use in this example.
| Command | Value | Description |
|---|---|---|
|
IP (IP Protocol) |
1 | Set the expected transmission mode to TCP communication. |
|
DL (Destination IP Address) |
<Target IP address> | The target IP address that you send and receive from. For example, a data logging server’s IP address that you want to send measurements to. |
|
DE (Destination Port) |
<Target port number> | The target port number that the device sends the transmission to. This is represented as a hexadecimal value. |
To connect to a TCP/IP address:
- Ensure that the device is set up correctly with the SIM card installed and the antennas connected as described in Connect the hardware.
-
Open XCTU and Add a device to XCTU.
- Click the Configuration working mode
button. - Select a device from the Radio Modules list. XCTU displays the current firmware settings for that device.
- In the IP field, select 1 and click the Write button
. - In the DL field, type the <target IP address> and click the Write button. The target IP address is the IP address that you send and receive from.
- In the DE field, type the <target port number>, converted to hexadecimal, and click the Write button.
- Exit Command mode.
After exiting Command mode, any serial data sent to the device is sent to the destination IP address and port number after the RO (Packetization Timeout) occurs.
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