NPort 5000 Series User Manual
Pair Connection Mode
Pair Connection Mode employs two NPort device servers in tandem, and can be used to remove the 15-
meter distance limitation imposed by the RS-232 interface. One NPort is connected from its RS-232 port to
the COM port of a PC or other type of computer, such as a hand-held PDA, and the serial device is
connected to the RS-232 port of the other NPort. The two NPort device servers are then connected to each
other with a cross-over Ethernet cable, both are connected to the same LAN, or in a more advanced setup,
they communicate with each other over a WAN (i.e., through one or more routers). Pair Connection Mode
transparently transfers both data and modem control signals (although it cannot transmit the DCD signal)
between the two NPort device servers.
Pair Connection Master Mode
When using Pair Connection Mode, you must select Pair Connection Master Mode for the Operation mode
of one of the NPort device servers. In effect, this NPort will be acting as a TCP client.
Web Interface for the NPort 5100, 5200, and IA5000 Series Only
Web Interface for the Overall NPort 5000 Series
Parameter Setting
Default
Description Necessity
TCP Alive
Check Time
0 to 99 min 7 min
0 min: TCP connection is not closed due to an
idle TCP connection.
1 to 99 min: The NPort closes the TCP
connection automatically if there is no TCP
activity for the given time.
Required
Destination IP
address
Domain
Name
(E.g.,
192.168.1.1)
blank
The Pair Connection “Master” will contact the
network host that has this IP address. Data
will be transmitted
through the port No. (4001
by default). Note that you must configure the
same TCP port No. for the device
as the Pair Connection “Slave.”
Optional
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General
Weight and Dimensions
