Moxa Technologies NE-4100 - Manual (Page 49)

NE-4100 Series User’s Manual Web Console Configuration
6-14
Inactivity time is ONLY active when “TCP connection on” is set to “Any character.”
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’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 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 interval during which NE-4100 fetches the serial data from its internal
buffer. If there is incoming data through the serial port, NE-4100 stores data in the 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
port is set to 1200 bps, 8 data bits, 1 stop bit, and no for parity. In this case, the total number of
bits required to send a character is 10 bits, and the time required to transfer one character is
( 10 bits / 1200 bits/s ) * 1000 = 8.3 ms.
Therefore, you should set Force Transmit timeout to be larger than 8.3 ms. Force Transmit
timeout is specified in milliseconds and must be larger than 10 ms.
If the user wants to send a series of characters in a packet, the serial device attached to NE-4100
should send characters without time delay larger than Force Transmit timeout between characters
and the total length of data must be smaller than or equal to NE-4100’s internal buffer size. The
serial communication buffer size of NE-4100 is 1 Kbyte per port.
Destination IP address 1/2/3/4
Setting Factory Default Necessity
IP address or domain name
(e.g., 192.168.1.1)
None Required
Allows NE-4100 to connect actively to the remote host whose address is set by this parameter.
Up to 4 connections can be established between NE-4100 and hosts. The connection speed or
throughput may be low if one of the four connections is slow. In this case, the other 3 connections will
be delayed while waiting for the slowest connection to finish transmitting or receiving.