Ebyte E-840-TTL-4G02 User Manual page 12

Chengdu Ebyte Electronic Technology Co.,Ltd
Receive：0xAA 0XFE 0x55 ID data length Data
For example： AA FE 55 02 03 11 22 33
11 22 33：real data
Demonstration：
Take SOCK2 as an example： ，
Transmit：+++(do not add new line for transmitting )
Transmit：AT+VER(add new line for transmitting )
same time
+OK=E840-TTL(4G-02)_V1.0
Transmit ： AT+SOCK2=1,TCPC,116.62.42.192,31687
Transmit：AT+LINKSTA2
+OK=Connect
Transmit：AT+POTOCOL=ON
+OK
Transmit：AT+POTOCOL
+OK=ON
AT+REBT
+OK
Waiting for the radio to restart, SOCK2 will automatically establish a connection with the server. After the connection is
started, data can be transmitted to each other via protocol.
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+OK
//02: SOCK2 link，
//enter AT command
//read version info. And enter AT command setting at the
//open SOCK2 and configure the network server
parameters that SOCK2 will connect to (the parameter used
here is Ebyte test server, not recommended for users)
//read if SOCK2 has started connection with server
// open protocol transmission mode
//inquire if protocol transmission is on
//restart
E840-TTL(4G-02)User Manual
03：the valid data length received this time
11