Comway 4G DTU Configuration Instructions - Page 9

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following figure:

4. 4G DTU socket communication parameter configuration

Select the serial communication main server configuration page , the configuration

process is as follows:



Choose a communication protocol



Set the server address and port number. The server address can be a fixed IP

address or a dynamic domain name.



Select the server connection method

The working mode of the DTU can be selected as constant mode or manual

mode .

Constant connection mode means that after the DTU is powered on, it

automatically connects to the pre-set server, and reconnects immediately after

disconnection;

manual mode means that after the DTU completes startup, the serial port enters

the AT command mode, which can realize SMS sending and receiving or other

needs to respond Application scenarios of AT commands.