Bay Technical Associates 525H Manual De Usuario
For example, suppose the host device is transmitting and receiving
data from Port 1 and you wish to switch to Port 2.
data from Port 1 and you wish to switch to Port 2.
1.
Send
Control-T to the multiport.
2.
Wait two character times.
3.
Read computer input buffer.
4.
If there are no characters in the PC's input buffer, send ASCII
2. This will switch the PC to Port 2. If there are characters in
the PC's input buffer, you may send ASCII 1 to continue
communicating with Port 1 or ASCII 2 to switch to Port 2. Any
characters received after sending the new port number will be
from the new port.
2. This will switch the PC to Port 2. If there are characters in
the PC's input buffer, you may send ASCII 1 to continue
communicating with Port 1 or ASCII 2 to switch to Port 2. Any
characters received after sending the new port number will be
from the new port.
The multiport does not start loading data from the new peripheral port
into the host port I/O module until the new peripheral port number is
received.
into the host port I/O module until the new peripheral port number is
received.
Mode of Operation 2 provides automatic message multiplexing
between the host port and up to seventeen peripheral ports. Data
received from the peripheral devices is treated as messages. A
message begins when a peripheral port receives a character from the
device connected to it. A message is completed when the message
terminating character is received or when the buffer is full. Either
condition will cause data to be transferred to the host device a
message at a time, with the multiport inserting the peripheral port
number prior to the actual message.
between the host port and up to seventeen peripheral ports. Data
received from the peripheral devices is treated as messages. A
message begins when a peripheral port receives a character from the
device connected to it. A message is completed when the message
terminating character is received or when the buffer is full. Either
condition will cause data to be transferred to the host device a
message at a time, with the multiport inserting the peripheral port
number prior to the actual message.
Messages will be sent automatically to the host device in a
round-robin fashion (i.e., if the multiport is sending a message from
Port 1, Port 2 will be examined next for a complete message, then
Port 3, etc.).
round-robin fashion (i.e., if the multiport is sending a message from
Port 1, Port 2 will be examined next for a complete message, then
Port 3, etc.).