NPort W2150A-W4/W2250A-W4 Series User Manual
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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.
TCP port
Default
4001
Options
Description
This field specifies the TCP port to use for communication with the attached serial device.
Settings for Reverse Terminal Mode
TCP alive check time (default=7 min):
This field specifies how long the NPort W2150A-W4/W2250A-W4
will wait for a response to keep-alive packets before closing the TCP connection. The NPort W2150A-
W4/W2250A-W4 checks the connection status by sending keep-alive packets periodically. If the remote host
does not respond to the packet within the time specified in this field, the NPort W2150A-W4/W2250A-W4
will force the existing TCP connection to close. For socket and device control modes, the NPort W2150A-
W4/W2250A-W4 will listen for another TCP connection from another host after closing the connection. If the
TCP alive check time is set to 0, the TCP connection will remain open even if there is no response to the
keep-alive packets.
Inactivity time (default=0 min):
This field specifies the idle time setting for auto-disconnection. A setting
of 0 min. will cause the port to remain connected even when idling.
TCP port (default=4001):
This is the TCP port number assignment for the serial port on the NPort
W2150A-W4/W2250A-W4. It is the port number that the serial port uses to listen to connections and that
other devices must use to contact the serial port. To avoid conflict with well-known TCP ports, the default is
set to 4001.
Authentication type (default=None):
This field allows you to configure the method used, if any, to verify
a user’s ID and authorization.
Option
Description
None
Authentication is not required
Local
Verify the ID against the NPort W2150A-W4/W2250A-W4 User Table.
RADIUS
Verify the ID against the external RADIUS server..
