Typical Application Example; Active Serial Devices Connected To The Internet; Application Scenarios - Hi-Link HLK-WR02 User Manual

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7 Typical application example

Active Serial devices connected to the Internet

7.1

7.1.1 Application scenarios

Active serial equipment networking refers to a way which the equipment initiate the
connection and process the data interaction (upload or download) compared with a
backend server. Typical active devices, such as P0S machine, etc., started to connect
after the completion of the backend server as soon as possible in each credit card
transaction, and upload data. Active serial equipment networking topology structure as
shown in the above. Among them, the backend Server work as a TCP Server , the device
access to the network via a serial port Server , also as a TCP Client end.
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