NPort IA5000A Series
Web Console Configuration
5-21
Delimiter process
Setting
Factory Default
Necessity
Do Nothing,
Del 1,
Del 2,
Strip Delimiter
Do Nothing
Optional
Del 1 or Del 2: The data will be transmitted when an additional byte (for Del1), or
an additional 2 bytes (for Del2) of data is received after receiving the Delimiter.
Strip Delimiter: When the Delimiter is received, the Delimiter is deleted (i.e., stripped), and the remaining
data is transmitted.
Do Nothing: The data will be transmitted when the Delimiter is received.
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 IA5450A’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 the NPort IA5450A fetches the serial data from its
internal buffer. If data is incoming through the serial port, the NPort IA5450A stores the data in the internal
buffer. The NPort IA5450A 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 under Force transmit timeout.
The optimal Force transmit timeout depends on your application, but it must be at least larger than one
character interval within the specified baudrate. For example, assume that the serial port is set to 1200 bps, 8
data bits, 1 stop bit, and no parity. In this case, the total number of bits needed to send a character is 10 bits,
and the time required to transfer one character is
(10 (bits) / 1200 (bits/s)) * 1000 (ms/s) = 8.3 ms.
Therefore, you should set Force transmit timeout to be larger than 8.3 ms, so in this case, it must be greater
than or equal to 10 ms.
If the user wants to send a series of characters in the same packet, the serial device attached to the NPort
IA5450A should send that series of characters during a time interval less than the Force transmit timeout for
the NPort IA5450A, and the total length of data must be less than or equal to the NPort IA5450A’s internal
buffer size. The serial communication buffer size for the NPort IA5450A is 1 KB 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 NPort IA5000A to connect actively to the remote host whose IP address is set by this parameter.
ATTENTION
Up to 4 connections can be established between the NPort IA5450A and hosts. The connection speed or
throughput may be low if one of the four connections is slow, since one slow connection will slow down the
other connections.
