Ebyte E840-DTU User Manual page 24

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AT+LINKSTA2
Function： inquire whether TCP connection is established
Format： inquire
Parameter：
AT+LINKSTA3
Function： inquire whether TCP connection is established
Format： inquire
Parameter：
AT+SOCK
Function：
Format：
configure
Parameter：
Ip The IP address or domain name of the target server when the module is set to "CLIENT"
Port The port number of the server, in decimal, less than 65535.
AT+SOCK1
Function：
Format：
configure
Parameter：
1：turn on SOCK1
Ip The IP address or domain name of the target server when the module is set to "CLIENT"
Port The port number of the server, in decimal, less than 65535.
AT+SOCK2
Function：
Format：
configure
Parameter：
1：turn on SOCK2
Ip The IP address or domain name of the target server when the module is set to "CLIENT"
Port The port number of the server, in decimal, less than 65535.
AT+SOCK3
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transmit：AT+LINKSTA2<CR>
return：<CR><LF>+OK=<sta><CR><LF>
Sta whether establish TCP connection，Connect(TCP connection)/ Disconnect(TCP cut off)
transmit：AT+LINKSTA3<CR>
return：<CR><LF>+OK=<sta><CR><LF>
Sta whether establish TCP connection，Connect(TCP connection)/ Disconnect(TCP cut off)
Set/query the network protocol parameter format.
inquire
transmit：AT+SOCK<CR>
return：<CR><LF>+OK=<protocol>,<ip>,< port ><CR><LF>
transmit：AT+SOCK=<protocol>,<ip>,< port ><CR>
return：<CR><LF>+OK<CR><LF>
protocol protocol type， TCPC / UDPC
TCPC corresponding TCP client
UDPC corresponding UDP client
Set/query the network protocol parameter format.
inquire
transmit：AT+SOCK1<CR>
return：<CR><LF>+OK=<EN>,<protocol>,<ip>,< port ><CR><LF>
transmit：AT+SOCK1=<EN>,<protocol>,<ip>,< port ><CR>
return：<CR><LF>+OK<CR><LF>
EN enable 0：turn off SOCK1
protocol type， TCPC / UDPC
TCPC corresponding TCP client
UDPC corresponding UDP client
Set/query the network protocol parameter format.
inquire
transmit：AT+SOCK2<CR>
return：<CR><LF>+OK=<EN>,<protocol>,<ip>,< port ><CR><LF>
transmi：AT+SOCK2=<EN>,<protocol>,<ip>,< port ><CR>
return：<CR><LF>+OK<CR><LF>
EN enable 0：turn off SOCK2
protocol type， TCPC / UDPC
TCPC corresponding TCP client
UDPC corresponding UDP client
E840-DTU(4G-02E) User Manual
24