Ebyte E840-DTU User Manual page 23

Chengdu Ebyte Electronic Technology Co.,Ltd
Format：
transmit AT+EXAT<CR><LF>
return <CR><LF>+OK<CR><LF>
Parameter：None
Description: After the command is executed correctly, the module is switched from command mode to the transparent
transmission mode.
AT+RESTORE
Function：
Format：
transmit AT+RESTORE<CR><LF>
Parameter：None
Description：None
AT+UART
Function：
Format：
configure
Parameter：
Parity
description：none
AT+UARTCLR
Function：
Format：
configure
transmit：AT+ UARTCLR =< sta ><CR>
return：<CR><LF>+OK<CR><LF>
Parameter：
ON Clear the serial port cache before connecting.
OFF Do not clear the serial port cache before connecting.
AT+IMEI
Function：
Format：
parameter：
AT+LINKSTA
Function： inquire whether TCP connection is established
Format： inquire
Parameter：
AT+LINKSTA1
Function： inquire TCP whether TCP connection is established
Format： inquire
Parameter：
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd
configure
restore factory configuration
configure
return <CR><LF>+OK<CR><LF>
set/inquire UART parameters
inquire
transmit：AT+UART<CR>
return：<CR><LF>+OK=<baudrate>,< parity ><CR><LF>
transmit：AT+UART=<baudrate>,< parity ><CR><LF>
return：<CR><LF>+OK<CR><LF>
baudrate baud rate 1200~921600bps，self-defined
Parity NON
EVEN
Set/inquire whether to clear the serial port cache before connecting the module.
Inquire
transmit：AT+ UARTCLR <CR>
return：<CR><LF>+OK=< sta ><CR><LF>
sta status
inquire the IMEI of module
inquire
transmit：AT+IMEI<CR>
return：<CR><LF>+OK=<imei><CR><LF>
imei IMEI of module
transmit：AT+LINKSTA<CR>
return：<CR><LF>+OK=<sta><CR><LF>
Sta whether establish TCP connection，Connect(TCP connection)/ Disconnect(TCP cut off)
transmit：AT+LINKSTA1<CR>
return：<CR><LF>+OK=<sta><CR><LF>
Sta whether establish TCP connection，Connect(TCP connection)/ Disconnect(TCP cut off)
E None
ODD
E840-DTU(4G-02E) User Manual
23