NPort W2150/2250 Plus Series User’s Manual Web Console: Serial Port Settings
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Settings for Pair Connection Modes
When Application is set to Pair Connection on a serial port’s Operation Modes page, you will
be able to configure Pair Connection Master and Slave mode settings. A Pair Connection
application involves one serial port communicating over an IP network to another serial port as if
the two serial ports were connected by a serial cable. Pair Connection modes can be used to extend
RS-232 transmission to unlimited distances.
An NPort device server is needed at both ends of the connection. The serial port at one end must
be set to Pair Connection Master mode, and the serial port at the other end must be set to Pair
Connection Slave mode. It does not matter which serial port is master and which serial port is
slave.
TCP Alive Check Time
Default
7 min
Options
0 to 99 min
Description
This field specifies how long the NPort will wait for a response to “keep alive”
packets before closing the TCP connection. The NPort checks connection status
by sending periodic “keep alive” packets.
0: The TCP connection will remain open even if there is no response to the
“keep alive” packets.
1 to 99: If the remote host does not respond to the packet within the specified
time, the NPort will force the existing TCP connection to close.
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