Chengdu ebyte electronic Technology Co.,Ltd.
E840-TTL-GPRS03 User Manual
Copyright ©2012–2017
,
Chengdu ebyte electronic Technology Co.,Ltd.
11
Function
:
Query/set whether the serial port cache is cleared before module is connected
Format
:
Query
TX
:
AT+ UARTCLR <CR>
return
:
<CR><LF>+OK=< sta ><CR><LF>
Set
TX
:
AT+ UARTCLR =< sta ><CR>
return
:
<CR><LF>+OK<CR><LF>
Parameters: sta state
ON
Clear the serial port cache before connecting.
OFF The serial port cache is not cleared before the connection.
AT+MAC
Function
:
Query MAC
Format
:
Query
TX
:
AT+MAC<CR>
Return
:
<CR><LF>+OK=<mac><CR><LF>
Parameter
:
MAC
MAC address of the module
AT+IMEI
Function
:
Query IMEI
Format
:
Query
TX
:
AT+IMEI<CR>
Return
:
<CR><LF>+OK=<imei><CR><LF>
Parameter
:
imei IMEI code
AT+LINKSTA
Function
:
Query whether TCP link is connected
Format
:
Query
TX
:
AT+LINKSTA<CR>
Return
:
<CR><LF>+OK=<sta><CR><LF>
Parameter
:
Sta whether TCP link connection is established
,
Connect(TCP connection)/ Disconnect(TCP
cut off)
AT+LINKSTA1
Function
:
Query whether TCP link is connected
Format
:
Query
TX
:
AT+LINKSTA1<CR>
Return
:
<CR><LF>+OK=<sta><CR><LF>
Parameter
:
Sta whether TCP link connection is established
,
Connect(TCP connection)/ Disconnect(TCP
cut off)
AT+LINKSTA2
Function
:
Query whether TCP link is connected
Format
:
Query
TX
:
AT+LINKSTA2<CR>
return
:
<CR><LF>+OK=<sta><CR><LF>
Parameter
:
Sta whether TCP link connection is established
,
Connect(TCP connection)/ Disconnect(TCP
cut off)