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 |
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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
Delimiter 1
Setting | Factory Default | Necessity |
00 to FF | None | Optional |
Delimiter 2 |
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Setting | Factory Default | Necessity |
00 to FF | None | Optional |
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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 |
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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.
