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displayed on the configuration window. (It takes some time to acquire IP address
from DHCP server)
When a module on the board list is selected, IP address, Subnet mask and Gateway
are displayed. If module could not acquire network information from DHCP server, IP
address, Gateway Address and Subnet mask will be initialized to 0.0.0.0.
11) Network Operation Mode
Client / server / mixed : This is to select the communication method based on TCP. TCP
is the protocol to establish the connection before data communication, but UDP just
processes the data communication without connection establishment. The Network
mode of WIZ107SR can be divided into TCP Server, TCP Client and Mixed mode
according to the connection establishing method. At the TCP server mode, WIZ107SR
operates as server on the process of connection, and waits for the connection trial from
the client. WIZ107SR operates as client at the TCP Client mode on the process of
connection, and tries to connect to the server's IP and Port. Mixed modes supports both
of Server and Client. The communication process of each mode is as below.
<TCP server mode Communication>
At the TCP Server mode, WIZ107SR waits for the connection requests.
TCP Server mode can be useful when the monitoring center tries to connect to the
device (where WIZ107SR is installed) in order to check the status or provide the
commands. In normal time WIZ107SR is on the waiting status, and if there is any
connection request (SYN) from the monitoring center, the connection is established
(ESTABLISH), and data communication is processed (Data Transaction). Finally
connection is closed (FIN).
In order to operate this mode, Local IP, Subnet, Gateway Address and Local Port
Number should be configured first.
The Data transmission proceeds as follows,
1. The host connects to the WIZ107SR which is configured as TCP Server mode.
2. As the connection is established, data can be transmitted in both directions – from
the host to the WIZ107SR, and from the WIZ107SR to the host
<TCP client mode Communication>
If WIZ107SR is set as TCP Client, it tries to establish connection to the server.
To operate this mode, Local IP, Subnet, Gateway Address, Server IP, and Server port
(WIZnet Co., Ltd.)
WIZ107SR User Manual
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