Moxa Technologies NPort 5200 Series User Manual page 38

Inactivity time
Setting
0 to 65535 ms
0 ms: TCP connection is not closed due to an idle serial line.
0-65535 ms: NPort 5200 automatically closes the TCP connection if there is no serial data activity
for the given time. After the connection is closed, NPort 5200 starts listening for another host's
TCP connection.
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 5200 will check the connection
status between the NPort 5200 and remote host by sending "keep alive" packets periodically. If
the remote host does not respond to the packet, NPort 5200 assumes that the 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
1, 2, 3, 4
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
00 to FF
Delimiter 2
Setting
00 to FF
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.
5-14 NPort 5200 Series User's Manual
Factory Default
0 ms
Factory Default
1
Factory Default
None
Factory Default
None
Necessity
Optional
Necessity
Required
Necessity
Optional
Necessity
Optional