User`s manual
NPort 5600-8-DT User’s Manual Introduction to Operation Modes
5-4
TCP Client Mode
In TCP Client mode, the NPort actively establishes a TCP
connection to a specific network host when data is received
from the attached serial device. After the data has been
transferred, the NPort can automatically disconnect from the
host computer through the Inactivity time settings. Please
refer to Chapter 6 for details on these parameters.
Data transmission proceeds as follows:
1. The NPort requests a connection from the host.
2. The connection is established and data can be transmitted
in both directions between the host and device.
TCP Client Mode
Request a
connection
Proceed with
data transmission
TCP Client
TCP/IP
Ethernet
RS-232/422/485
Device
1
1
2
2
Port 7
Port 8
Port 5
Port 6
Port 3
Port 4
Port 1
Port 2
UDP Mode
UDP is similar to TCP but is faster and more efficient.
Data can be broadcast to or received from multiple
network hosts. However, UDP does not support
verification of data and would not be suitable for
applications where data integrity is critical. It is ideal for
message display applications.
UDP Mode
Directly proceed with
data transmission
(no connection required)
TCP/IP
Ethernet
RS-232/422/485
Device
Port 7
Port 8
Port 5
Port 6
Port 3
Port 4
Port 1
Port 2
Pair Connection Modes
Pair Connection Master and Slave modes connect two NPort
device servers over Ethernet for serial-to-serial
communication. The two NPort device servers can connect to
each other with a Ethernet cable, connect to the same LAN, or
in a more advanced setup, communicate to each other over a
WAN (i.e., through one or more routers). A device attached to
one NPort can then communicate transparently to a device
attached to the other NPort, as if the two devices were
connected by a serial cable. Both data and modem control
signals are exchanged, except for DCD signals. This can be
used to overcome traditional limitations with serial
communication distance and introduces many new
possibilities for serial-based device control.
Pair Connection
Pair Connection
Master
TCP/IP
Ethernet
RS-232/422/485
Device
Port 7
Port 8
Port 5
Port 6
Port 3
Port 4
Port 1
Port 2
Port 7
Port 8
Port 5
Port 6
Port 3
Port 4
Port 1
Port 2
Pair Connection
Slave