NPort IA5150/5250 Series User’s Manual
Web Console Configuration
5-20
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 IA5150/5250 automatically closes TCP connection, if there is no serial data
activity for the given time.
This parameter defines the maintenances 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’s
connection close request. Although the inactivity time is disabled, the NPort IA 5150/5250 will
check the connection status between the NPort IA5150/5250 and remote host by sending “keep
alive” packets periodically. If the remote host does not respond to the packets, it treats the
connection as being down unintentionally. NPort IA5150/5250 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
Previously, when Max connections > 1, and the serial device is transmitting data, if any one of the
connected hosts is not responding, it will wait until the data has been transmitted successfully
before transmitting the second group of data to all hosts. Currently, 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.
