Moxa Technologies DE-304 Installation Guide download pdf (Page 48)

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

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

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

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Moxa Technologies DE-304 Installation Guide Page 48

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