13
W&T
RS232(/RS422/RS485) Multi Computer Adapter
Subject to error and alteration
SW1
SW2
SW3
SW4
Serial Port Settings
Port A Port B Port C
Operat.
Mode
Port B
Port A
Serial format
Baud rate, number of data bits and any parity bit which may be
used can be configured separately for each port on the
T-switch, so that the format can be adapted to any connected
terminal device.
Handshake procedure
All serial ports on the T-switch can be set to hardware
handshake or XON/XOFF handshake independently of each
other. Operating the T-switch with no handshake is not
recommended.
When one of the internal buffers in the T-switch is nearly filled
with data, an XOFF code (13H) is output on the corresponding
port and for the next received character the hardware hands-
hake output is set to ‚Block‘ (negative level). Once the buffer
has been emptied again, an XON code (11H) is output and the
hardware handshake output is set to ‚Enable‘ (positive level).
