AUXSerial/Flow Registry Key
The default setting is NO_CONTROL or 0 meaning that no flow control or
handshaking either by hardware or software is used. For the AUX port the
valid settings are:
The RTSCTS_IN setting uses the available CTS hardware handshake line to
control the flow of data from an external source (IN). To hold off incoming
data the JNIOR activates the CTS line when internal buffers near capacity.
In RTSCTS_OUT mode the AUX port monitors the RTS line and stops transmission
when it is activated. The RTSCTS mode employs the handshake bidirectionally.
The XONXOFF_IN handshake transmits the XOFF character (Ctrl-S 0x13) when
internal buffers reach capacity to hold off the incoming data. The XON
character (Ctrl-Q 0x11) is later sent to resume communications. Similarly in
XONXOFF_OUT mode the AUX port listens for the XOFF character and stops
transmission when received. When a subsequent XON character is received the
communications resume. Both the XON and XOFF characters are filtered from
the stream. The XONXOFF setting applies these rules bidirectionally.
HELP Topics: AUX_PORT