B&B Electronics 232BSS4, Buffered Smart Switch manual Smart Switch Only Mode, Description, Options

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.

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