NPort IA5150A/IA5250A Series
Web Console Configuration
5-20
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 IA5450A will check the connection status between the
NPort IA5450A and remote host by sending “keep alive” packets periodically. If the remote host does not
respond to the packet, the NPort IA5450A assumes that the connection was closed down unintentionally. The
NPort IA5450A will then force the existing TCP connection to close.
ATTENTION
The
Inactivity time
should be configured to be larger than the
Force transmit
timeout setting. To prevent
the unintended loss of data due to the session disconnection, it is highly recommended that you set this value
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
By default, when
Max connection
is greater than 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.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.
Delimiter 1
Setting
Factory Default
Necessity
00 to FF (hex)
None
Optional
Delimiter 2
Setting
Factory Default
Necessity
00 to FF (hex)
None
Optional
Once the NPort IA5150A/IA5250A receives both delimiters through its serial port, it immediately packs all data
currently in its buffer and sends it to the NPort IA5150A/IA5250A’s Ethernet port.
ATTENTION
Delimiter 2 is optional. If left blank, then Delimiter 1 alone trips clearing of the buffer. If the size of the serial
data received is greater than 1 KB, the NPort IA5150A/IA5250A will automatically pack the data and send it
to the Ethernet. However, to use the delimiter function, you must at least enable Delimiter 1. If Delimiter 1 is
left blank and Delimiter 2 is enabled, the delimiter function will not work properly.
