User`s manual

NPort 6000 Series User’s Manual Configuring Serial Port Operation Modes
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As data is received through the serial port, it is stored by the NPort 6000 in the internal buffer. The
NPort 6000 transmits data stored in the buffer via TCP/IP, but only when the internal buffer is full
or as specified by the force transmit time. When set to 0, the force transmit time is disabled, and
transmission is determined solely by the data in the internal buffer. At 1 to 65535, the TCP/IP
protocol software will pack the serial data received after there is a gap in serial communication
that exceeds the specified force transmit time.
The optimal force transmit time 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 the force transmit time to be larger than 8.3 ms, so in this case, it must
be greater than or equal to 10 ms.
If it is necessary to send a series of characters in the same packet, the serial device will need to
send that series of characters within the specified force transmit time, and the total length of data
must be less than or equal to the NPort 6000’s internal buffer size (1 KB per port).
UDP Mode
Destination address 1 through 4 (default=None): In UDP mode, you may specify up to 4 ranges
of IP addresses for the serial port to connect to. At least one destination range must be provided.