Network Working Mode; Tcp Server Mode; Tcp Client Mode; Udp Server Mode - Ebyte NE2-D11 Manual

Serial-ethernet serial server

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4.2 Network working mode

TCP Server is a TCP Server. In TCP Server mode, the device monitors the local port, accepts

the connection request from the client and establishes a connection for data communication, which is

usually used for communication with TCP clients in LAN. As a server mode, the device supports 5

client connections, and if two Sockets start the server mode at the same time, it can support 10 client

connections.

When the Modbus gateway function is turned off, the device sends the data received by the

serial port to all the client devices connected with the device, and supports the connection of 5 clients

at most. After the Modbus gateway function is enabled, the non-Modbus data will be cleared and not

forwarded.

The TCP Client is a TCP Client. When the device works, it will initiate a connection request to

the server and establish a connection, which is used to realize the interaction between serial port data

and server data.

Using the client needs to configure the IP address/domain name of the target accurately, and the

target port.

Note: The local port for client mode is recommended to be 0 (dynamic port).

UDP Server means that the device does not verify the source IP address of data when

communicating with UDP protocol. After receiving a UDP data packet, it saves the source IP address

and source port of the data packet and sets it as the target IP and port, so the data sent by the device

only sends the data packet to the source IP address and port where the device received the data last

time.

This mode is usually used in scenarios where multiple network devices communicate with this

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NE2-D11/NE2-D12 User Manual

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