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NPort 5600 Series User’s Manual Choosing the Proper Operation Mode
TCP Client Mode
In TCP Client mode, NPort can actively establish a
TCP connection to a pre-defined host computer
when serial data arrives.
After the data has been transferred, NPort can
automatically disconnect from the host computer by
using the TCP alive check time or Inactivity time
settings. Refer to Chapter 5 for more details
As illustrated in the figure, data transmission
proceeds as follows:
1. The NPort configured for TCP Client Mode
requests to connect to the host.
2. Once the connection is established, data can be
transmitted in both directions—from the host to
the NPort, and from the NPort to the host.
UDP Mode
Compared to TCP communication, UDP is faster
and more efficient. In UDP mode, you can
unicast or multicast data from the serial device to
one or multiple host computers, and the serial
device can also receive data from multiple host
computers, making this mode ideal for message
display applications.
Real COM Mode
NPort comes equipped with COM drivers that work
with Windows 95/98/ME/NT/2000/XP systems, and
also TTY drivers for Linux systems. The driver
establishes a transparent connection between host and
serial device by mapping the IP:Port of the NPort’s
serial port to a local COM/TTY port on the host
computer. This operation mode also supports up to 4
simultaneous connections, so that multiple hosts can
collect data from the same serial device at the same
time.
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