Documentation Number 232BSS4-2907m
7
&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
Smart Switch Only Mode
Description:
Smart Switch Only mode is used when the host device connected
to the Master port initiates all communications with the Slave devices. To
use the 232BSS4 as a Smart Switch Only, Auto Select is left unchecked in
the setup software.
In Smart Switch Only mode, the 232BSS4 is constantly looking for a
command sequence by monitoring the data that is being received on the
Master port from the host device. This command can tell the 232BSS4 to
connect the Master port to a single Slave port, send data to one or more
Slave ports at once, discontinue communications with all Slave ports, or
ignore commands for a specific length of time.
All command characters are buffered until the full command sequence
is received. If the 232BSS4 recognizes the data stream as a command
sequence, the sequence is not passed through the switch.
Options:
Initial Connections:
Upon power-up, the 232BSS4 can be initialized to allow the Master
access to any of the Slave ports without any commands sent. The
Master to Slave and Slave to Master initialization are each
independently configurable through the setup software. The Master can
also be set to broadcast to any or all of the Slave ports on power-up. If
no ports are selected to be initialized on power-up, the 232BSS4 will
wait for a switching command before allowing the Master access to any
of the Slaves.
3 or 4 Character Command:
The 232BSS4 commands can be set to be either three or four
characters long. The first two or three characters can be programmed to
any value through the setup software. The third or fourth character is
the actual command.
Thus the command sequence would look like:
{Char1}{Char2}
{Char3}
{Command Character}
Char1-3 would be defined by the user through the setup software.
Char3 would only be sent if the 232BSS4 was set up for a four character
command.
