Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual
Copyright
©
2012
–
2019,Chengdu Ebyte Electronic Technology Co. LTD.
21
EVEN
ODD
description
:
none
AT+UARTCLR
Function
:
Set/inquire whether to clear the serial port cache before connecting the module.
Format
:
Inquire
transmit
:
AT+ UARTCLR <CR>
return
:
<CR><LF>+OK=< sta ><CR><LF>
configure
transmit
:
AT+ UARTCLR =< sta ><CR>
return
:
<CR><LF>+OK<CR><LF>
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>