Moxa Technologies NE-4100 Max. connection, Max connection 2 to, Delimiter, Force transmit

NE-4100 Series User’s Manual Web Console Configuration

periodically. If the remote host does not respond to the packet, it assumes that the connection was closed down unintentionally. NE-4100 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 a session getting 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:

NE-4100 series only allows 1 host to open the TCP connection to the specific serial port.

Max connection 2 to 4:

Allows requests from between 2 and 4 host’s TCP connection to open the specific NE-4100 series serial port, at the same time. When multiple hosts establish a TCP connection to the specific serial port at the same time, NE-4100 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 NE-4100 from the Ethernet interface.

Delimiter 1

Setting	Factory Default	Necessity
00 to FF	“0” for None	Optional
Delimiter 2
Setting	Factory Default	Necessity
00 to FF	“0” for None	Optional

Once the NE-4100 receives both delimiters through its serial port, it immediately packs all data currently in its buffer and sends it out the NE-4100 series’ 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 1K, the NE-4100 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 NE-4100’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 NE-4100 fetches the serial data from its internal buffer. If data is being received through the serial port, the NE-4100 stores the data in its internal buffer. NE-4100 transmits data stored in the buffer via TCP/IP, but only if the internal buffer is full or if the force transmit time interval reaches the time specified as Force Transmit timeout.

Optimal force transmit timeout differs according to your application, but it must be at least as large as one character interval within the specified baud rate. For example, assume that the serial

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