Black Box LE2101A-BT-R2, Руководство пользователя

Страница: 51 / 236

51
TERMINAL SERVERS
Step 1: Define the Port Speed
Statement 1 prevents the Terminal Server from sensing the speed used by
the specified port automatically. Rather, it specifies a forced baud rate.
NOTE
The port characteristics must match the settings of the terminal in order
for communications to work. Setting a baud rate of 19200 on the port and
using a terminal with a set baud rate of 9600 will not work.
One can also set different speeds for input (terminal-to-Terminal Server)
and for output (Terminal Server-to-terminal). This is done by entering
DEFINE PORT INPUT SPEED xxxx, and DEFINE PORT OUTPUT SPEED
yyyy.
Step 2: Define the Port Async Parameters
Statement 2 specifies the character size, parity setting, and number of stop
bits. This example shows the most common scenario sometimes referred to
in literature as 8-N-1 (8 bits per character, No parity, and 1 stop bit).
Step 3: Define the Port Flow Control
Statement 3 dictates that the port will use XON/XOFF flow control—also
known as software flow control. This is the most common case for directly-
attached terminals. If this statement is entered, the attached terminal must
also be set to use the same flow control mechanism. You may also use other
methods of flow control. Other relevant configuration commands that may
apply here are DEFINE PORT FLOW CONTROL and DEFINE PORT LOSS
NOTIFICATION.