Bay Technical Associates 5218H Manual De Usuario
In Mode of Operation 5, a single message is sent to the host port from
a selected peripheral port. Operation in Mode 5 enables the host
device to receive one complete message from a selected peripheral
port by sending the control character followed by ASCII capital
a selected peripheral port. Operation in Mode 5 enables the host
device to receive one complete message from a selected peripheral
port by sending the control character followed by ASCII capital
S and
the desired port number (1 to 4 for the 525H, 1 to 8 for the 528H and
529H, and 01 to 17 for the 5218H). If no message is available, the
host port will transmit a
529H, and 01 to 17 for the 5218H). If no message is available, the
host port will transmit a
Carriage Return/Line Feed.
NOTE: The host device may select and transmit data to any
peripheral port while simultaneously receiving single messages from a
specific peripheral port.
peripheral port while simultaneously receiving single messages from a
specific peripheral port.
Mode of Operation 6 provides time-division multiplexing. The internal
processor in Mode 6 continuously scans all peripheral ports checking
for characters in the receive buffers. If a receive buffer contains
characters, the characters are transmitted through the host port
preceded by a port identification code which consists of the control
character followed by the peripheral port number. Transmission
continues until the buffer is empty or until a user-defined maximum
data block length has been transmitted. After transmission is
completed, the multiport will continue its scanning sequence.
processor in Mode 6 continuously scans all peripheral ports checking
for characters in the receive buffers. If a receive buffer contains
characters, the characters are transmitted through the host port
preceded by a port identification code which consists of the control
character followed by the peripheral port number. Transmission
continues until the buffer is empty or until a user-defined maximum
data block length has been transmitted. After transmission is
completed, the multiport will continue its scanning sequence.
If a control character is received by the multiport from a peripheral
device, a second control character is added automatically. This
technique allows you to detect the control character as a data
character when it is sent through the multiport.
device, a second control character is added automatically. This
technique allows you to detect the control character as a data
character when it is sent through the multiport.
NOTE: The host device may select and transmit data to any
peripheral port while simultaneously receiving data blocks from all
peripheral ports.
peripheral port while simultaneously receiving data blocks from all
peripheral ports.