NPort W2150/2250 Plus Series User’s Manual
Introduction to Operation Modes
4-5
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 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 Mode
RS-232/422/485
Device
RS-232/422/485
NPort W2250/2150
Plus Slave
NPort W2250/2150
Plus Master
Device
TCP/IP
WLAN
Antenna
Port 1
RS-232/422/485
Port 2
RS-232/422-485
Wireless Serial Device Server
W2250
Reset
Ethernet
12-48 VDC
Ready
WLAN
Serial 1
Serial 2
Antenna
Port 1
RS-232/422/485
Port 2
RS-232/422-485
Wireless Serial Device Server
W2250
Reset
Ethernet
12-48 VDC
Ready
WLA
N
Ser
ial 1
Ser
ial2
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.
Ethernet Modem Mode
RS-232
TCP/IP
WLAN
Antenna
Port 1
RS-232/422/485
Port 2
RS-232/422-485
Wireless Serial Device Server
W2250
Reset
Ethernet
12-48 VDC
Ready
WLAN
Serial 1
Serial 2