NPort 5100A Series Web Console Configuration
[Delimiter + 1] or [Delimiter + 2]: The data will be transmitted when an additional byte (for Delimiter +1), or
an additional 2 bytes (for Delimiter +2) 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 5100A’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 5100A fetches the serial data from its internal
buffer. If data is incoming through the serial port, the NPort 5100A stores the data in the internal buffer. The
NPort 5100A 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 a value 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
5100A should send that series of characters during a time interval less than the Force transmit timeout for the
NPort 5100A, and the total length of data must be less than or equal to the NPort 5100A’s internal buffer size.
The serial communication buffer size for the NPort 5100A is 1 KB per port.
TCP Server Mode
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