NPort W2150A-W4/W2250A-W4 Series User Manual
19
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.
Pair Connection Modes
Pair Connection Master and Slave modes connect
two NPort device servers over a network for serial-
to-serial communication. A device attached to one
NPort can then communicate transparently to a
device attached to the other NPort, as if a serial
cable connected the two devices. Both data and
modem control signals are exchanged, except for
DCD signals. This can overcome traditional
limitations with serial communication distance and
introduce many new possibilities for serial-based
device control.
Ethernet Modem Mode
Ethernet Modem mode is designed for use with
legacy operating systems, such as MS-DOS, that do
not support TCP/IP Ethernet. By connecting the
properly configured NPort serial port to the MS-DOS
computer’s serial port, it is possible to use legacy
software to transmit data over the Ethernet when
the software was originally designed to transmit
data over a modem.
