NPort 5200 Series User’s Manual
Web Console Configuration
5-18
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 closes the TCP connection automatically 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 closes the TCP connection automatically 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 data is not incoming or outgoing through the serial port during the specified
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.
ATTENTION
The Inactivity time should at least be set larger than that of Force transmit timeout. To prevent
the unintended loss of data due to the session being disconnected, it is highly recommended that
this value is set large enough so that the intended data transfer is completed.
ATTENTION
Inactivity time is ONLY active when “TCP connect on” is set to “Any character.”
Ignore jammed IP
Setting
Factory Default
Necessity
No or Yes
No
Optional
For previous versions of NPort 5200, when Max connections > 1, and the serial device is
transmitting data, if any one of the connected hosts was not responding NPort 5200 would wait
until the data had been transmitted successfully before transmitting the second group of data to all
hosts. For the current version of NPort 5200, if you select Yes for “Ignore jammed IP,” the host
that is not responding will be ignored, but the data will still be transmitted to the other hosts.
Packing length
Setting
Factory Default
Necessity
0 to 1024
0
Optional
Default = 0, The Delimiter Process will be followed, regardless of the length of the data packet.
If
the data length (in bytes) matches the configured value, the data will be forced out. The data length
can be configured for 0 to 1024 bytes. Set to 0 if you do not need to limit the length.
