NPort W2150/2250 Plus Series User’s Manual Web Console: Serial Port Settings
7-35
Settings for Reverse Terminal Mode
When Application is set to Reverse Terminal on a serial port’s Operation Modes page, you will
be able to configure additional settings such as TCP alive check time, Inactivity time, and TCP
port.
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.
Inactivity Time
Default
0 min.
Options
0 to 99 min.
Description
This field specifies the time limit for keeping the connection open if no data
flows to or from the serial device.
0: The TCP connection will be kept active until a connection close request is
received, even if data is never received. For many applications, the serial device
may be idle for long periods of time, so 0 is an appropriate setting.
1 to 99: If there is no activity for the specified time, the connection will be
closed. When adjusting this field, make sure that it is greater than the Force
transmit time. Otherwise, the TCP connection may be closed before data in the
buffer can be transmitted. Connection Control must be set to “Any
character/Inactivity time” for this setting to have effect.
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