Installation guide

5-8
Pair Connection (Master)
Setting Value Notes Necessity
Remote IP address valid IP
IP address of another NPort,
configured for Pair
Connection (Slave), with
which this NPort can request a
connection.
Required
0
TCP connection is never
closed by this device.
TCP alive check time
1 – 99 min.
TCP connection is
automatically closed by this
device if there is no TCP
activity for the given time.
Optional
Pair Connection (Slave)
Setting Value Notes Necessity
valid IP
Allows contact with only the
specified remote IP address.
Remote IP address
blank
Allows contact with any
remote Master.
Optional
0
TCP connection is never
closed by this device.
TCP alive check time
1 – 99 min.
TCP connection is
automatically closed by this
device if there is no TCP
activity for the given time.
Optional
Socket Modes
Socket Mode consists of three different operation modes: TCP Server, TCP
Client, and UDP Server/Client. Keep in mind that the main differences between
TCP and UDP is that TCP guarantees delivery of data by requiring that the
recipient sends an acknowledgement to the sender. UDP does not require this
type of verification, making it possible to offer speedier delivery. UDP also
allows multicasting of data to groups of IP addresses.
TCP Server
TCP Server operation mode is designed for use with serial devices that act as
servers. That is, they passively wait for other devices to contact them and request
that a TCP connection be established between the two devices. Once a
connection is established, data transmission can proceed in both directions. It