Advantech EKI-1511 Series User Manual page 49

4.3.3.2 Data Listen Port
The TCP/UDP port number represents the source port number, and the number is
used to identify the channel for remote initiating connections. The port range is 1024-
65533. If an unknown caller wants to connect to the system and request services,
they must define the TCP/UDP port to carry a long-term conversation.
Each node on a TCP/IP network has an IP address, and each IP address can allow
connection on one or more TCP port. The well-known TCP ports are those that have
been defined; for example, port 23 is used for Telnet connections. There are also
custom sockets that users and developers define for their specific needs. The default
TCP/UDP port of the EKI-1511 Series Port1 is 5300. Users can adjust them
according to preference or application. Each port has its own data listen port to
accept the connection requests of other network device. The data listen port cannot
be set to the same value. You can transmit/receive data to/from devices via the data
listen port.
4.3.3.3 Command Listen Port
Each port has its own command listen port to accept connection requests from other
network devices, so the command listen port cannot be set to the same value. The
Command Listen Port is different from the Data Listen port. <Default Port is 5400>
38 EKI-1511 Series User Manual