B&B Electronics Buffered Smart Switch manual 26Documentation Number 232BSS42907 Manual

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between 0 and 65000 (65 seconds). See chapter 2 for a full description of these Timeout values.

Initial Connections:

When selected, the Initial Connections button provides a selection of ports to be connected when the unit is powered up.

When the switch is set for Smart Switch Only mode (no Auto Select), the Master to Slave communications (individual or broadcast) can be initialized to any or all of the four slave ports. One of the Slaves can also have access to the Master on power-up.

When in Auto Select mode, the Master can still be initialized to transmit data to the Slaves, but Slave to Master communications is handled through automatic switching and cannot be initialized.

Master Port Configuration:

This button displays the parameters for the Master Port, including Data Rate, the number of Data Bits, Parity, and if the port requires handshaking.

Slave Ports A – D Configuration:

This button displays the parameters for the Slave Port, including Data Rate, the number of Data Bits, Parity, and if the port requires handshaking. The port’s preamble characters are also defined here.

Read Module Configuration:

This button will read the configuration from the connected 232BSS4. The 232BSS4 is read upon entering the Main Screen, so it should not have to be read again unless it is necessary to set the parameters back after changing.

View Module Configuration:

This button will display all current module parameters on one screen for review. Any changes to the currently connected switch that have not been saved will be shown in Red. The page can then be printed to the default Windows printer for review or for attachment to the switch.

26Documentation Number 232BSS42907 Manual

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445

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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 Symbols and Conventions LED IndicatorsChapter 2 OPERATION Port Configurations Smart Switch Only Mode DescriptionOptions Four Character Command Format Command SummaryThree Character Command Format Command ExplanationCommands Select Port A to transmit and receive - “A” VB Example Table 2.2 Send Only and Clear Buffer Control Characters Table 2.3 - Timer Values commands and the Master can initiate the next communications sequence Auto Select/Smart Switch Mode 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 DCEMaster Port Connections Slave Port ConnectionsChapter 4 SETUP SOFTWARE IntroductionConnection 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 Appendix A ASCII Character Codes DECIMAL to HEX to ASCII CONVERSION TABLEASCII Appendix A Chart 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 PortAppendix B Cable Charts Pins 6, 8, & 20 looped back internally on the 232BSS4 Chart B.3. DCE Modem DB25 Connector to Master PortChart B.4. DCE Modem DB9 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 Chart B.8. Ports A - D DTE to DCE Modem DB9 ConnectorAppendix B Cable Charts UART Appendix C Block DiagramMASTER UART UARTAppendix C Appendix D Declaration of Conformity DECLARATION OF CONFORMITY