USR-DR404 user manual
Jinan USR IOT Technology Limited
27
If you want to restore the default interval --10ms, using the below AT command:
AT+FUARTTE=fast
Also need to restore to enable it.
For more AT commands, please refer to “AT command” in this manual.
3.3.3. UART auto-framing mode
For a fixed-length data frame on the serial port, you can turn on the UART auto-frame function and set the auto-frame
trigger time and the trigger frame length.USR-DR404 will automatically compose the data received from the serial port and
forward it to the network.
1. Auto framing trigger frame length: USR-DR404 receives the specified number of bytes from the serial port, forms a
data frame, and forwards it to the network.
2. Auto framing trigger time: if the data received from the serial port is less than the auto framing trigger frame length
within the trigger time, USR-DR404 will forward the received data to the network.
The automatic framing time is calculated from the time when the WIFI serial server receives the first byte from the
serial port. As shown below:
Diagram 23 Trigger Length
Diagram 24 Trigger Time
UART auto framing can be set through the built-in web page “Application Setting -- UART AutoFrame Setting” of DR404
or set by AT command.
