User Manual

TCP Client 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: NPort 5200 automatically closes the TCP connection if there is no TCP activity
for the given time.
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: NPort 5200 automatically closes the TCP connection if there is no serial data
activity for the given time.
This parameter defines the maintenance status as Closed or Listen for 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 Inactivity time is set to 0, the current TCP connection is kept active until a connection
close request is received. Although Inactivity time is disabled, the NPort 5200 will check the
connection status between the NPort 5200 and remote host by sending “keep alive” packets
periodically. If the remote host does not respond to the packet, NPort 5200 assumes that the
connection was closed down unintentionally. NPort 5200 will then force the existing TCP
connection to close.