Contents
 Model 232BSS4
Buffered Smart Switch
This product designed and manufactured in Ottawa, Illinois USA
of domestic and imported parts by
Page
 CHAPTER 4 SETUP SOFTWARE
Table of Contents
APPENDIX B CABLE CHARTS
APPENDIX C BLOCK DIAGRAM
 Documentation Number  232BSS4-2907m
 Documentation Number  232BSS4-2907m
Chapter 1 - Introduction
 Default Parameters
Specifications
 1. RS-232 Buffered Smart Switch model 232BSS4 2. Instruction Manual
Checklist
The following equipment should be in the shipping carton
3. 2 3.5 floppy disks
 Documentation Number  232BSS4-2907m
 Chapter 2 OPERATION
Symbols and Conventions
LED Indicators
 Port Configurations
 Options
Smart Switch Only Mode
Description
 Three Character Command Format
Command Summary
Four Character Command Format
Command Explanation
 Commands 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
 Figure 2.1. Multiple Terminals to a Host Controller
Using the 232BSS4 as a Buffered Splitter/Combiner
 Figure 2.2. Back to Back Operation
Back to Back Operation mux/demux
 Figure 2.3. Expanding the Number of Slave Ports
Cascading Multiple Switches
 Slave Devices that Automatically Send their Data
 Slave Devices that Require Polling
 DTE/DCE Explanation
Chapter 3 PORT CONNECTIONS
25 Pin DTE
25 Pin DCE
 Slave Port Connections
Master Port Connections
 Connection
Chapter 4 SETUP SOFTWARE
Introduction
 Software Uninstall
Software Installation
Select SETTINGS, CONTROL PANEL from the Windows START menu
Double Click ADD/REMOVE PROGRAMS
 Single Unit Main Screen
Setup Tutorial
 26Documentation Number 232BSS42907 Manual
 Back to Back Main Screen
 28Documentation Number 232BSS42907 Manual
 Default Parameters
Copying Parameters Between Switches
 Documentation Number 232BSS42907 Manual
 ASCII
Appendix A ASCII Character Codes
DECIMAL to HEX to ASCII CONVERSION TABLE
 Appendix A
 Pins 6, 8, & 20 looped back internally on the 232BSS4
Appendix B Cable Charts
Chart B.1. DTE PC DB25 Connector to Master Port
Chart B.2. DTE PC DB9 Connector to Master Port
 Appendix B Cable Charts
 Chart B.4. DCE Modem DB9 Connector to Master Port
Pins 6, 8, & 20 looped back internally on the 232BSS4
Chart B.3. DCE Modem DB25 Connector to Master Port
 Chart B.5. Ports A - D DTE to DTE PC DB25 Connector
Pins 1, 4, & 6 looped back internally on the 232BSS4
Chart B.6. Ports A - D DTE to DTE PC DB9 Connector
Chart B.7. Ports A - D DTE to DCE Modem DB25 Connector
 Chart B.8. Ports A - D DTE to DCE Modem DB9 Connector
Pins 1, 4, & 6 looped back internally on the 232BSS4
 Documentation Number 232BSS42907 Manual
 MASTER
Appendix C Block Diagram
UART
UART UART
 Documentation Number 232BSS42907 Manual
 DECLARATION OF CONFORMITY
Appendix D Declaration of Conformity