NPort 5000 Series User Manual
79
NOTE
Optimal force transmit timeout differs according to 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 greater than 8.3 ms. Force Transmit timeout is specified
in milliseconds and must be greater than 10 ms.
If you want to send the series of characters in a packet, the serial device attached to the NPort should
send characters with time delay less than Force Transmit timeout between characters and the total length
of data must be smaller than or equal to the NPort’s internal buffer size. The serial communication buffer
size of the NPort is 1 Kbyte per port.
RFC2217 Mode
Web Interface for the NPort 5000A and NPort IA5000A Series Only