W5500S2E serial to Ethernet module
W5500S2E user manual
13
TCP
Server
TCP/IP
network
Ser
W5500S2E
(TCP client)
User device
UDP peer
TCP/IP
network
Ser
W5500S2E
(UDP peer)
User device
3
Operating modes
W5500S2E module supports TCP server, TCP client, and UDP and Modbus modes. The
followings demonstrate these operating modes.
3.1
TCP server mode
Figure 3-1 TCP server mode diagram
In TCP server mode, W5500S2E listens on a local port and waiting for the connection
from a TCP client. They can start communication each other after link established.
3.2
TCP client mode
Figure 3-2 TCP client mode diagram
In TCP client mode, W5500S2E connects to a preset TCP server. If failure to connect, it
can be configured to re-connect continuously. They can start communication each other
after link established.
3.3
UDP mode
Figure 3-3 UDP mode diagram
In UDP mode, W5500S2E acts as an UDP peer to send data to another preset UDP peer.
W5500S2E can also receive data from other UDP peers.
Serial
TCP
Client
TCP/IP
network
Seri
W5500S2E
(TCP server)
User device
Serial
Serial
