Chengdu Ebyte Electronic Technology Co.,Ltd E840-TTL(4G-02)User Manual
Copyright
©
2012
–
2019
,
Chengdu Ebyte Electronic Technology Co.,Ltd
22
Parameter
:
sta status
ON Clear the serial port cache before connecting.
OFF
Do not clear the serial port cache before connecting.
AT+IMEI
Function
:
inquire the IMEI of module
Format
:
inquire
transmit
:
AT+IMEI<CR>
return
:
<CR><LF>+OK=<imei><CR><LF>
parameter
:
imei IMEI of module
AT+LINKSTA
Function
:
inquire whether TCP connection is established
Format
:
inquire
transmit
:
AT+LINKSTA<CR>
return
:
<CR><LF>+OK=<sta><CR><LF>
Parameter
:
Sta whether establish TCP connection
,
Connect(TCP connection)/ Disconnect(TCP cut off)
AT+LINKSTA1
Function
:
inquire TCP whether TCP connection is established
Format
:
inquire
transmit
:
AT+LINKSTA1<CR>
return
:
<CR><LF>+OK=<sta><CR><LF>
Parameter
:
Sta whether establish TCP connection
,
Connect(TCP connection)/ Disconnect(TCP cut off)
AT+LINKSTA2
Function
:
inquire whether TCP connection is established
Format
:
inquire
transmit
:
AT+LINKSTA2<CR>
return
:
<CR><LF>+OK=<sta><CR><LF>
Parameter
:
Sta whether establish TCP connection
,
Connect(TCP connection)/ Disconnect(TCP cut off)
AT+LINKSTA3
Function
:
inquire whether TCP connection is established
Format
:
inquire
transmit
:
AT+LINKSTA3<CR>
return
:
<CR><LF>+OK=<sta><CR><LF>
Parameter
:
Sta whether establish TCP connection
,
Connect(TCP connection)/ Disconnect(TCP cut off)
AT+SOCK
Function
:
Set/query the network protocol parameter format.
Format
:
inquire
transmit
:
AT+SOCK<CR>
return
:
<CR><LF>+OK=<protocol>,<ip>,< port ><CR><LF>
configure
transmit
:
AT+SOCK=<protocol>,<ip>,< port ><CR>
return
:
<CR><LF>+OK<CR><LF>
Parameter
:
protocol
protocol type
,
TCPC / UDPC
TCPC corresponding TCP client