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Through AT command: AT+FUARTTE=fast/normal, user can set the interval time: fast (10ms) and
normal (50ms). This command is factory default setting command and AT+RELD can't change its
value.
4.6.2 UART Auto-Frame
USR-WIFI232-A/B/C support UART auto-frame function. If user select open this function and
setting auto-frame trigger length and auto-frame trigger time parameters, then module will auto
framing the data which received from UART port and transmitting to the network as pre-defined
data structure.
�
Auto-frame
trigger
Auto-frame trigger
Auto-frame
Auto-frame
trigger
trigger length:
network.
�
Auto-frame trigger
Auto-frame
Auto-frame
Auto-frame
trigger
trigger
trigger time:
frame trigger length, then module will transmitting available data to the network and bypass
the auto-frame trigger length condition.
Detailed UART auto-frame function can refer to AT+ instruction set "UARTF/UARTFT/UARTFL"
introduction.
4.7
4.7
Network
Network
Setting
Setting
4.7
4.7 Network
Network Setting
Setting
USR-WIFI232-A/B/C module has two TCP/UDP Socket: Socket A and Socket B. Serial data
written to the module, will be sent to the Socket A and B simultaneously; TCP/UDP data that
module receives through either Socket A or B,will be sent to the serial port.
Dual Socket through different settings, you can achieve a variety of network interconnect. When
the module shipped only open Socket A, Socket B default is not to connect, if the user needs to
use, please set by AT commands.
4.7.1 Socket A
Socket A has three work mode: TCP Server, TCP Client, UDP.The setting method, please refer to
the AT+NETP command instruction.
When Socket A configured as TCP Server, it supports Multi-TCP link connection, and maximum
32 TCP clients permitted to connect to Socket A.
Multi-TCP link connection will work as following structure:
Upstream: All dates from different TCP connection or client will be transmitted to the serial port as
a sequence.
Downstream: All data from serial port (user) will be duplicate and broadcast to every TCP
connection or client.
Detailed multi-TCP link data transmition structure as following figure:
Jinan USR IOT Technology Limited
USR-WIFI232-A/B/C User Manual
length:
length: The fixed data length that module used to transmitting to the
length:
time:
time: After the trigger time, if UART port received data can't reach auto-
time:
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