Super Port User Guide www.usriot.com
Jinan USR IOT Technology Co., Ltd [email protected]
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3.2.
TCP Client
Diagram 3-5 TCP Client mode instructions
1
）
TCP Client provide Client connection to TCP network service. It can initiate a connection and
connect to the server to realize the transmission between serial port data and server data.
According to related provisions of TCP protocol,TCP client makes a distinction between connection
and disconnection to ensure the exchanging of data. Usually, it is the most common form of
network communication which adopted to data interaction between devices and servers.
2
）
This mode have a function that identify connection exceptions actively. After connected, there
will be about 15s internal to sent KeepAlive. If there is an abnormal interruption of the connection,
etc., it will be detected immediately and prompt K7 to break the original connection and
reconnect
3
）
When K7 try to connect server as TCP Client, the local port is 0, each time a link is initiated on
a random port.
4
）
This mode supports the synchronous baud rate function, transmission cloud and Modbus TCP
function of USR.
5
）
In the same LAN, if K7 is set as static IP, please set the IP of K7 as gateway IP and correctly set
the gateway IP address, otherwise normal communication will not be possible.
6
）
Note: KeepAlive function, sync baud rate function, pass-through cloud function, Modbus TCP
function are described in detail below.
