Proxima ASA 7911 - Manual (Page 58)

52
CTS pin, notifying the remote RS-232 host that data may be sent
over the connection. This function regulates the data exchange
between two RS-232 hosts.
In addition to this basic function, the Serial Adapter’s flow
control options regulate the data exchange between the Serial
Adapter and its attached RS-232 host. Below is a short descrip-
tion of how each flow control option operates when enabled:
Generate XON/XOFF: When its buffers are full, the Serial
Adapter will send an XOFF character to the attached host as a
signal for the host to stop transmitting data to the unit. Once
space becomes available within its buffers, the Serial Adapter
will send an XON character to the host as a signal to begin
transmission.
Recognize XON/XOFF: If the Serial Adapter receives an XOFF
character from the host, it will stop sending data to the host.
When it receives an XON from the host, the Serial Adapter will
resume transmission.
Generate CTS: The Serial Adapter will inhibit the CTS pin if
its buffers become full, and assert CTS if there is room in its
buffers.
Generate DSR: The Serial Adapter will inhibit the DSR pin if
its buffers become full, and assert DSR if there is room in its
buffers.
Recognize DTR: The Serial Adapter will not send data to the
host unless the DTR pin is asserted.
Recognize RTS: The Serial Adapter will not send data to the
host unless the RTS pin is asserted.