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B&B Electronics Buffered Smart Switch, 232BSS4 Master Port Connections, Slave Port Connections

Models: Buffered Smart Switch 232BSS4

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Master Port Connections:

The Master Port of the 232BSS4 is a 25 pin female D-sub connector configured as a DCE. This provides direct connection to an IBM PC compatible or other DTE device. When connecting the Master port to a modem, the Master port of another 232BSS4, or other device configured as a DCE, a null modem adapter such as B&B’s model 232DTE is needed. If the user chooses to use the DTR signal to tell the 232BSS4 when to accept commands, the DTR output from the Master device should be connected to pin 20.

See Appendix B for a complete set of connection tables to the 232BSS4 ports.

Slave Port Connections:

The Slave Ports of the 232BSS4 are 9-pin, D-sub connectors configured as DTE for direct connection to a modem or other DCE device. When connecting the Slave ports to a PC compatible or other DTE device, a null modem adapter is needed.

See Appendix B for a complete set of connection tables to the 232BSS4 ports.

22	Documentation Number 232BSS4-2907m

B&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.comB&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

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B&B Electronics Buffered Smart Switch Master Port Connections, Slave Port Connections, Documentation Number 232BSS4-2907m

Contents

This product designed and manufactured in Ottawa, Illinois USA Buffered Smart SwitchModel 232BSS4 of domestic and imported parts byPage APPENDIX B CABLE CHARTS Table of ContentsCHAPTER 4 SETUP SOFTWARE APPENDIX C BLOCK DIAGRAMDocumentation Number 232BSS4-2907m Chapter 1 - Introduction Documentation Number 232BSS4-2907mSpecifications Default ParametersThe following equipment should be in the shipping carton Checklist1. RS-232 Buffered Smart Switch model 232BSS4 2. Instruction Manual 3. 2 3.5 floppy disksDocumentation Number 232BSS4-2907m Chapter 2 OPERATION Symbols and ConventionsLED Indicators Port Configurations Options Smart Switch Only ModeDescription Four Character Command Format Command SummaryThree Character Command Format Command ExplanationCommands Select Port A to transmit and receive - “A” VB Example VB ExampleTable 2.2 Send Only and Clear Buffer Control Characters Table 2.3 - Timer Values commands and the Master can initiate the next communications sequence Options Auto Select/Smart Switch ModeDescription Inactivity Time Using the 232BSS4 as a Buffered Splitter/Combiner Figure 2.1. Multiple Terminals to a Host ControllerBack to Back Operation mux/demux Figure 2.2. Back to Back OperationCascading Multiple Switches Figure 2.3. Expanding the Number of Slave PortsSlave Devices that Automatically Send their Data Slave Devices that Require Polling 25 Pin DTE Chapter 3 PORT CONNECTIONSDTE/DCE Explanation 25 Pin DCEDocumentation Number 232BSS4-2907m Master Port ConnectionsSlave Port Connections Connection Chapter 4 SETUP SOFTWAREIntroduction Select SETTINGS, CONTROL PANEL from the Windows START menu Software InstallationSoftware Uninstall Double Click ADD/REMOVE PROGRAMSSetup Tutorial Single Unit Main Screen26Documentation Number 232BSS42907 Manual Back to Back Main Screen 28Documentation Number 232BSS42907 Manual Copying Parameters Between Switches Default ParametersDocumentation Number 232BSS42907 Manual Documentation Number 232BSS42907 Manual Appendix A ASCII Character CodesDECIMAL to HEX to ASCII CONVERSION TABLE ASCIIAppendix A Documentation Number 232BSS42907 ManualChart B.1. DTE PC DB25 Connector to Master Port Appendix B Cable ChartsPins 6, 8, & 20 looped back internally on the 232BSS4 Chart B.2. DTE PC DB9 Connector to Master PortDocumentation Number 232BSS42907 Manual Pins 6, 8, & 20 looped back internally on the 232BSS4Appendix B Cable Charts Chart B.4. DCE Modem DB9 Connector to Master Port Pins 6, 8, & 20 looped back internally on the 232BSS4Chart B.3. DCE Modem DB25 Connector to Master Port Chart B.6. Ports A - D DTE to DTE PC DB9 Connector Pins 1, 4, & 6 looped back internally on the 232BSS4Chart B.5. Ports A - D DTE to DTE PC DB25 Connector Chart B.7. Ports A - D DTE to DCE Modem DB25 ConnectorPins 1, 4, & 6 looped back internally on the 232BSS4 Pins 1, 4, & 6 looped back internally on the 232BSS4Chart B.8. Ports A - D DTE to DCE Modem DB9 Connector Appendix B Cable Charts Documentation Number 232BSS42907 ManualUART Appendix C Block DiagramMASTER UART UARTAppendix C Documentation Number 232BSS42907 ManualAppendix D Declaration of Conformity DECLARATION OF CONFORMITY