Low Power WiFi Module User Manual V1.3
http://www.tcp232.net
Jinan USR IOT Technology Limited.
Page 33 of 59
4. AT+INSTRUCTION INTRODUCTION
4.1. Configuration Mode
When USR-WIFI232-G power up, it will default works as transparent transmission mode, then user can
switch to configuration mode by serial port command. USR-WIFI232-G UART default parameters
setting as below figure,
Figure 31.USR-WIFI232-G Default UART Port Parameters
In configuration mode, user can setting the module through AT+ instruction set, which cover all web
page setting function.
4.1.1. Switch to Configuration Mode
Two steps to finish switching from transparent transmission mode to configuration mode.
UART input “+++”, after module receive “+++”, and feedback “a” as confirmation.
UART input “a”, after module receive “a” and feedback “+ok” to go into AT+ instruction set
configuration mode.
Figure 32.Switch to Configuration Mode
Notes:
1. When user input “+++” (No “Enter” key required), the UART port will display feedback information “a”,
and not display input infor++” as above UART display.
2. Any other input or wrong step to UART port will cause the module still works as original mode
(transparent transmission).
