NPort IA5150A/IA5250A Series Web Console Configuration
Delimiter 2
Setting Factory Default Necessity
00 to FF (hex) None Optional
Once the NPort IA5150A/IA5250A receives both delimiters through its serial port, it immediately packs all data
currently in its buffer and sends it to the NPort IA5150A/IA5250A’s Ethernet port.
ATTENTION
Delimiter 2 is optional. If left blank, then Delimiter 1 alone trips the clearing of the buffer.
If the size of the
serial data received is greater than 1 KB, the NPort IA5150A/IA5250A
will automatical
ly pack the data and
send it to its Ethernet port.
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.
Delimiter process
Setting Factory Default Necessity
Do nothing, Delimiter +
1, Delimiter + 2, Strip
Delimiter
Do Nothing Optional
[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 will be 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 IA5150A/IA5250A’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 IA5150A/IA5250A fetches the serial data from
its internal buffer. If data is incoming through the serial port, the NPort IA5150A/IA5250A stores the data in its
internal buffer. The NPort IA5150A/IA5250A transmits the 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 the Force transmit
timeout.
The ideal Force transmit timeout depends on your application, but it must be at least larger than a single
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 timeout to be larger than 8.3 ms, so in this case, it must be
greater than or equal to 10 ms.
If a user wants to send a series of characters in the same packet, the serial device attached to the NPort
IA5150A/IA5250A should send that series of characters during a time interval that is less than the Force
transmit timeout of the NPort IA5150A/IA5250A, and the total length of data must be less than or equal to the
NPort IA5150A/IA5250A’s internal buffer size. The serial communication buffer size for the NPort
IA5150A/IA5250A is 1 KB per port.
To Next Page
Loading...
Need help?
General
Weight and Dimensions
