USRIOT USR-N520, User Manual

Page: 21 / 69

21 / 69
2) Save the parameters and restart USR-N520.
3) Open serial port to send data, then the data can be submitted onto our web page server.
HTTPD Client Test Screenshot
3.2. Socket B Communication
USR-N520 support double socket communication mode, socket A and socket B. One serial port
corresponding to two socket communication mode can be realized through setting the parameter of socket B.
But socket B is only used for transparent transmission and only worked as TCP client or UDP client.
Set USR-N520 as double socket communication mode, the data of serial port will be transparently
transmitted to socket A and socket B at one time. When data comes from socket A and socket B
simultaneously, USR-N520 will transmit the data of socket A to serial port firstly, and then transmit the data of
socket B once the data of socket A finished.
Communication example:
1. Set the parameter of socket A and socket B by web page