At+ Command Set - Jinan USR IOT Technology USR-WIFI232-A2 User Manual

AT+<CMD>[op][para-1,para-2,para-3,para-4...]<CR>
AT+: Prefix of command message;

CMD: Command string;

[op]: Symbol of command operator,

"=" : The command requires parameters input;

"NULL": Query the current command parameters setting;

[para-n]: Parameters input for setting if required;

<CR>: "Enter" Key, it's 0x0a or 0x0d in ASCII;
Notes: When input AT+Instruction, "AT+<CMD>" character will display capital letter automatic
and other parts will not change as you input.
Response Message

+<RSP>[op] [para-1,para-2,para-3,para-4...]<CR><LF><CR><LF>
+: Prefix of response message;

RSP: Response string;

"ok" : Success

"ERR": Failure

[op] : =

[para-n]: Parameters if query command or Error code when error happened;

<CR>: ASCII 0x0d;

<LF>: ASCIII 0x0a;

Error Code

Table 8 Error Code Description USR-WIFI232-A/B/C Web Access Default Setting
Error Code
-1
-2
-3
-4
-5

4.13.2.2 AT+ command Set

Instruction
<null>
E
ENTM
NETP
UART
UARTF
UARTFT
Jinan USR IOT Technology Limited
USR-WIFI232-A2 User Manual
Description
Invalid Command Format
Invalid Command
Invalid Operation Symbol
Invalid Parameter
Operation Not Permitted
Table 9 AT+ command Set List
Description
NULL
Open/Close show back function
Set module into transparent transmission mode
Set/Query network protocol parameters
Set/Query serial port parameters
Open/Close UART auto-frame function
Set/Query UART auto-frame trigger time
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