At Command - Ebyte E840-DTU User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd

3. AT command

a) Command format：
AT+：command front end
CMD：control command
[op]："=" indicates parameter configuration
"NULL"indicates parameters inquire
[para-n]：parameter list
<CR><LF>：CRLF，ASCII 0x0D 0x0A
b) Command error code：
Error code
c) Commend set:
EXAT
RESTORE
UART
UARTCLR
LINKSTA
LINKSTA1
LINKSTA2
LINKSTA3
SOCK
SOCK1
SOCK2
SOCK3
REGMOD
REGINFO
REGINFONEW
HEARTMOD
HEARTINFO
HEARTINFONEW
HEARTM
SHORTM
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd
AT+<CMD>[op][ para1, para2, para3,...]<CR><LF>
-1
-2
-3
-4
-5
REBT
VER
INFO
set/inquire if UART buffer is cleared before module is connected
IMEI
set/inquire self-defined registration info (ASCII ,HEX）
set/inquire self-defined heartbeat packet info.(ASCII）
Description
Invalid command format
Invalid command
Invalid operator
Invalid parameter
Operation prevented
restart module
inquire version No.
inquire device info.
exit AT command mode
restore to factory configuration
set/inquire UART parameter
inquire IMEI
inquire SOCK connection status
inquire SOCK1 connection status
inquire SOCK2 connection status
inquire SOCK3 connection status
set/inquire SOCK parameter
set/inquire SOCK1 parameter
set/inquire SOCK2 parameter
set/inquire SOCK3 parameter
set/inquire register packet mode
set/inquire self-defined registration info.（ASCII）
set/inquire heartbeat packet mode
set/inquire heartbeat packet info.（ASCII, HEX）
set/inquire heartbeat packet time
set/inquire short connection time
E840-DTU(4G-02E) User Manual
21