Usr USR-WIFI232-G, User Manual

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Low Power WiFi Module User Manual V1.3 http://www.tcp232.net
Jinan USR IOT Technology Limited. Page 34 of 59 freda@usr.so
4.2. AT+ Instruction Set Overview
User can input AT+ Instruction through hyper terminal or other serial debug terminal, also can program
the AT+ Instruction to script. User can also input “AT+H” to list all AT+ Instruction and description to
start.
Figure 33.”AT+H” Instruction for Help
4.2.1. Instruction Syntax Format
AT+Instruction protocol is based on the instruction of ASCII command style, the description of syntax
format as follow.

Format Description

< >: Means the parts must be included

[ ]: Means the optional part

Command Message
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;