
Chengdu Ebyte Electronic Technology Co.,Ltd
E840-TTL-4G02E User Manual
Copyright ©2012–2019,
Chengdu Ebyte Electronic Technology Co.,Ltd
20
Parameter
:
baudrate
baud rate can be configured to:
9600,
19200,
38400,
57600,
115200,
230400,
460800,
921600,
Parity
NON
E
No check
EVEN
Even parity check
ODD
Odd parity check
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>