At Command - Ebyte E840-DTU User Manual

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3. AT Command

a) Command format: AT+<CMD>[op][ para1, para2, para3,...]<CR><LF>
AT+: Command prefix
CMD: Control command
[op]: "=" Parameter configuration
"NULL" Parameter query
[para-n]: List of parameters, can be omitted
<CR><LF>: Line Feed，ASCII 0x0D 0x0A
b) Command error code:
Error code
-1
-2
-3
-4
-5
c) Command set:
Command
REBT
VER
INFO
EXAT
RESTORE
UART
UARTCLR
MAC
IMEI
SN
LINKSTA
SOCK
REGMOD
REGINFO
REGINFONEW
HEARTMOD
HEARTINFO
HEARTINFOEW
HEARTM
SHORTM
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Invalid command format
Invalid command
Invalid operator
Invalid parameter
Operation not allowed
Query version number
Query device information
Exit AT command mode
Restore factory settings
Set/query serial port parameters
Set/Query whether to clear the serial port cache before connecting
Query MAC address
Set/query SN code
Query the SOCK connection status
Set/query SOCK parameters
Set/Query Registration Packet Mode
Set/Query User Registration Packet information (ASCII)
Set/Query User Registration Packet information (HEX)
Set/query heartbeat packet mode
Set/Query User Heartbeat Packet information (ASCII)
Set/Query User Heartbeat Packet information (HEX), Supporting index
Set/query heartbeat time
Set/query short connection time
E840-DTU(NB-03) User Manual
Description
Description
Restart
Query IMEI
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