Configuring the Serial Port
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For Client Mode, select
Client Mode
and enter the IP address and port
number to which the Bridge connects. The default port number is 4000.
The parameters Line Length, Timeout and Delimiter control the
serial-to-network packet conversion process. Most users will not need to
change them. These parameters control the way that data received on
the serial port is divided into Ethernet packets. The serial packets are sent
to a serial network connection.
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Line Length
– As data arrives on the serial port it is accumulated in a
buffer in the Bridge. The Line length parameter sets the maximum size
for this buffer. When the number of characters in the buffer reaches
the Line length value the entire buffer is sent as the data in a single
network packet.
The value of Line length can range from 1 to 1,408 bytes. The default
value is 1,408.
Do not use values of line length less than 5 with a serial baud rate of
115,200 or greater.
■
Timeout
– Often serial data arrives in small bursts of characters. When
the Bridge receives a burst of data it will wait for a certain period of
time for additional data to be received. If additional data is received, it
is added to the receive buffer, and the Bridge begins to wait again. If
additional data is not received for longer than the period specified by
the Timeout value, then the buffer of characters received is sent in a
single network packet, and the process begins again.
The value of timeout is in units of milliseconds, and should be
specified in 10 millisecond increments. The valid range for timeout is
from 10 (0.01 second) to 65,000 (650 seconds). The default value is
10.
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Delimiters
– Some serial devices transmit and receive data in a known
structure. In these cases, there are often special characters that the
transmitting device uses to indicate a complete message has been
sent. These characters are referred to as delimiters. You can specify up
to five different delimiting characters to the Bridge. When the Bridge
adds one of these characters to its buffer of serial received characters,
it will immediately send that buffer as a network packet.
The value of delimiters is specified as a list of hexadecimal values
separated by spaces. You may specify up to five different delimiter
