Working Mode; Transparent Transmission Mode - Waveshare UART-WIFI232-B2 User Manual

UART-WIFI232-B2 User Manual

6.1 WORKING MODE

UART-WIFI232-B2 has five working modes:

(1) Transparent transmission mode

(2) Serial Command Mode
(3) HTTPDClient mode
(4) ModbusTCP<=>ModbusRTU mode.
(5) AT Command Mode
Upon power-up, the serial server enters a pre-configure mode. By default, it enters transparent
transmission mode. Switching between modes (1) to (4) can be configured using the serial server's
built-in web page or the AT command AT+TMODE.
In modes (1), (2), (3), and (4), the serial port sends "+++" followed by "a". Once the serial server
receives these sequences, it sequentially responds with acknowledgment codes "a" and "+ok". This
indicates the transition into mode (5), the AT command mode. To return from AT command mode to
the original operational mode, the command AT+ENTM (with a carriage return) can be used.
Specific timing requirements for entering the AT command mode can be found in the
"UART-WIFI232-B2 AT Command Set" documentation.
6.1.1 TRANSPARENT TRANSMISSION MODE
UART-WIFI232-B2 supports the serial port transparent transmission mode. In this mode, all the
data that need to be sent and received are transparently transmitted between the serial port and
WIFI/ Ethernet, without any parsing, so as to realize the data transmission between universal serial
port devices and network devices.
In the transparent transmission mode, it can be completely compatible with the user's original
software platform. User equipment can basically support wireless data transmission without making
software changes, as shown in the following
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