WIZ100SR-EVB WIZnet, WIZ100SR-EVB Datasheet - Page 17

• Manufacturer Part Number: WIZ100SR-EVB
• Description: Interface Development Tools EVALUATION BOARD FOR WIZ100SR
• Manufacturer: WIZnet
• Type: Serial to Ethernetr

Specifications of WIZ100SR-EVB

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: WIZ100SR
• Interface Type: Ethernet, RS-232
• Operating Supply Voltage: 5 V
• Dimensions: 50 mm x 30 mm x 8.85 mm
• Maximum Operating Temperature: + 80 C
• Minimum Operating Temperature: + 10 C
• Operating Supply Current: 500 mA

<TCP client mode Communication>
<Mixed mode Communication>
Hardwired Internet Connectivity Wizard (WIZnet, Inc.)
from the monitoring center, the connection is established(ESTABLISH), and data
communication is processed (Data Transanction). Finally connection is closed (FIN).
In order to operate this mode, Local IP, Subnet, Gateway Address and Local Port Number
should be configured first.
As illustrated in the above figure, data transmission proceeds as follows,
1. The host connects to the WIZ100SR 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 WIZ100SR, and from the WIZ100SR to the host
If WIZ100SR 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 number
should be set. If server IP had domain name, use DNS function.
In TCP Client mode, WIZ100SR can actively establish a TCP connection to a host computer
when power is supplied.
As illustrated in the above figure, data transmission proceeds as follows:
1. As power is supplied, WIZ100SR board operating as TCP client mode actively establishes a
connection to the server.
2. If the connection is complete, data can be transmitted in both directions – from the host
to the WIZ100SR and from WIZ100SR to the host
In this mode, WIZ100SR normally operates as TCP Server and waits for the connection
request from the peer. However, if WIZ100SR receives data from the serial device before
connection is established, it changes to the client mode and sends the data to the server IP.
Therefore, at the mixed mode, the server mode is operated prior to the client mode.
Figure 7. TCP Client mode
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