User's Manual

NE-4100 Series User’s Manual Web Console Configuration
6-9
FIFO
Setting Factory Default Necessity
Enable, Disable Enable Required
WE-2100T’s serial ports provide a 128-byte FIFO both in the Tx and Rx directions. Disable the
FIFO setting when your serial device does not have a FIFO to prevent data loss during
communication.
Operating Settings
Click on the Operating Settings link on the left side of the screen to display operating settings.
Make necessary changes to the settings and then click on Submit to validate the modifications.
TCP Server Mode
TCP alive check time
Setting Factory Default Necessity
0 to 99 min 7 min Optional
0 min: TCP connection is not closed due to an idle TCP connection.
1 to 99 min: WE-2100T automatically closes the TCP connection if there is no TCP activity for
the given time. After the connection is closed, WE-2100T starts listening for another host’s TCP
connection.
Inactivity time
Setting Factory Default Necessity
0 to 65535 ms 0 ms Optional
0 ms: TCP connection is not closed due to an idle serial line.
0-65535 ms: WE-2100T automatically closes the TCP connection if there is no serial data activity
for the given time. After the connection is closed, NE-4100 starts listening for another host’s TCP
connection.
This parameter defines the maintenance status as Closed or Listen on the TCP connection. The
connection is closed if there is no incoming or outgoing data through the serial port during the
specific Inactivity time.
If the value of inactivity time is set to 0, the current TCP connection is maintained until there is a
connection close request. Although inactivity time is disabled, the WE-2100T will check the
connection status between the WE-2100T and remote host by sending “keep alive” packets
periodically. If the remote host does not respond to the packet, it assumes that the connection was
closed down unintentionally. WE-2100T will then force the existing TCP connection to close.