User Manual

connection was closed down unintentionally. NPort 5200 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 5200 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 5200 serial port, at the same
time. When multiple hosts establish a TCP connection to the specific serial port at the same
time, NPort 5200 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 5200 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 5200 receives both delimiters through its serial port, it immediately packs all
data currently in its buffer and sends it out the NPort 5200’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 5200 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 5200’s TCP/IP protocol software to try to pack serial data
received during the specified time into the same data frame.
This parameter defines the time interval during which NPort 5200 fetches the serial data from
its internal buffer. If data is incoming through the serial port, NPort 5200 stores the data in