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NPort 5600 Series User’s Manual Web Console Configuration
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 will check the connection
status between the NPort and remote host by sending “keep alive” packets periodically. If the
remote host does not respond to the packet, NPort assumes that the connection was closed down
unintentionally. NPort will then force the existing TCP connection to close.
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.
Max connection
Setting Factory Default Necessity
1, 2, 3, 4 1 Required
Max connection is usually used when the user needs to receive data from different hosts
simultaneously. The factory default only allows 1 connection at a time.
Max. connection 1:
NPort only allows 1 host to open the TCP connection to the specific serial port.
Max connection 2 to 4:
Allows 2 to 4 host’s TCP connection request to open this NPort serial port, at the same time. When
multiple hosts establish a TCP connection to the specific serial port at the same time, NPort will
duplicate the serial data and transmit to all of the hosts. Ethernet data is sent on a first-in-first-out
basis to the serial port when data comes into NPort from the Ethernet interface.
Delimiter 1
Setting Factory Default Necessity
00 to FF None Optional
Delimiter 2
Setting Factory Default Necessity
00 to FF None Optional
Once the NPort receives both delimiters through its serial port, it immediately packs all data
currently in its buffer and sends it to the NPort’s Ethernet port.
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 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.
Force transmit
Setting Factory Default Necessity
0 to 65535 ms 0 ms Optional
0: Disable the force transmit timeout.
1 to 65535: Forces the NPort’s TCP/IP protocol software to try to pack serial data received during
the specified time into the same data frame.
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