HF Elfin-EG10, Manual

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4G_2G DTU Products Function
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AT+<CMD>[op][para-1,para-2,para-3,para-4 … ]<CR>
◼
AT+
：
Command message prefix
◼
CMD
：
Instruction string;
◼
[op]
：
Instruction operator, specified as parameter setting or query
◆
"=" : Indicates parameter setting
◆
"NULL" : Indicates the query
◼
[para-n]: Input when parameter setting, such as query is not required
◼
<CR>: Terminator, carriage return, ASCII code 0x0a or 0x0d
<Notes>
：
When user enter a command, the "AT+<CMD>" character is automatically echoed to
uppercase and the parameter portion remains unchanged.
➢
Response Massage
+<RSP>[op] [para-1,para-2,para-3,para-4
…
]<CR><LF><CR><LF>
◼
+ : Response message prefix;
◼
RSP: Respons string, including:
◆ “ok” : Indicate success
◆ “ERR”: Indicate failure
◼
[op]
：
=
◼
[para-n] :
Return parameters when querying or error code when error
occurs
◼
<CR>: ASCII code 0x0d
；
◼
<LF>: ASCII code 0x0a
；
➢
Error Code
Error Code Description
Error Code Notes
-1
Invalid command format
-2
Invalid command
-3
Invalid operator
-4
Invalid parameter
-5
Operation not allowed
2.4.2. AT Instruction Set
List of AT+ Instruction Set
Instruction Description
<null> Null
Management Instruction Set
H Help
E Open/Close Show Back Function
CMDPW Set/Query AT command prefix character for sending AT command
in throughput mode.