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B&B Electronics Port Expander 232PE User Manual

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Port Expander
Model 232PE
Document No. 232PE3095
This product
Designed and Manufactured
In Ottawa, Illinois
USA
of domestic and imported parts by
B&B Electronics Mfg. Co. Inc.
707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 434-7094
Internet:
http://www.bb-elec.com
sales@bb-elec.com
techsupt@bb.elec.com
1993 B&B Electronics -- June 1993
232PE3095 Manual
Cover Page
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 434-7094

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Summary of Contents for B&B Electronics Port Expander 232PE

  • Page 1 Port Expander Model 232PE Document No. 232PE3095 This product Designed and Manufactured In Ottawa, Illinois of domestic and imported parts by B&B Electronics Mfg. Co. Inc. 707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Internet: http://www.bb-elec.com sales@bb-elec.com...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Chapter 1: HARDWARE...1 Introduction ...1 Checklist ...2 Port Expansion Bus...2 Setting The Address...2 Connecting To The Bus...4 Port Configuration ...5 RS-232 Configuration...5 RS-422/485 Option ...6 RS-422 Mode...7 RS-485 Mode...8 Specifications...10 Appendix A: Cable Charts ... A-1 Chart 1. IBM PC DB25 Connector to Master Port ... A-2 Chart 2.
  • Page 4 Table of Contents 232PE3095 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094...

  • Page 5: Chapter 1: Hardware

    Chapter 1: HARDWARE Introduction The Port Expander (232PE) adds four asynchronous serial data ports to the Expandable Smart Switch (232XSS). Up to fifteen Port Expanders can be connected to a single 232XSS via the Port Expansion Bus. Refer to Figure 1. This expands the eight ports on the 232XSS to a maximum of sixty-eight ports.

  • Page 6: Checklist

    Checklist The following equipment should be in the shipping carton: 1. Port Expander 2. Instruction Manual If any of the items above are damaged or missing contact the shipper immediately. Port Expansion Bus The number of serial ports on the Expandable Smart Switch can easily be expanded to a maximum of sixty-eight ports by daisy chaining Port Expander units on the 232XSS's expansion bus.
  • Page 7 Figure 2. Printed Circuit Board Outline * PC board for optional RS-422/485 port. 232PE3095 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094...

  • Page 8: Connecting To The Bus

    Table 1. Address Switch DIP Switch 1 Connecting To The Bus Connecting the Port Expander to the Expandable Smart Switch bus is a simple task. On the rear panel of the Port Expander is an expansion bus cable, refer to Figure 3. This cable simply plugs into the bus expansion connector located on the back of the last unit connected to the Expandable Smart Switch bus.

  • Page 9: Port Configuration

    Port Configuration The 232PE has four selectable ports labeled "A" through "D". Refer to Figure 8. Any of the ports can be manufactured to meet either RS-232 or RS-422/485 electrical characteristics. RS-232 Configuration RS-232 ports will be wired as DTE ports. Refer to Table 2 for pin out, signal name, and signal direction information.

  • Page 10: Rs-422/485 Option

    Figure 4. Simplified RS-232 Schematic RS-422/485 Option The RS-232 transmit and receive data signals on the master port of the 232XSS will be converted to balanced full-duplex RS- 422 or half-duplex RS-485 signals with this option. Table 3. RS-422/485 PORTS A - D Pin # Signal TD(A)

  • Page 11: Rs-422 Mode

    Figure 5. Simplified RS-422/485 Schematic When a port has this option, an additional printed circuit board will be mounted to the main board. Use Figure 2 to locate its position. Refer to Table 3 for pin out, signal name, and signal direction information.

  • Page 12: Rs-485 Mode

    The EIA RS-422 Specification labels data lines with "A" and "B" designators. Some RS-422 equipment uses a "+" and "-" designator. In almost all cases, the "A" line is the equivalent of the "-" line and the "B" line is the equivalent of the "+" line. Figure 6.
  • Page 13 been sent. To change to a baud rate lower than 9600 baud, or to configure the send data control to match a specific baud rate, change R1 and C1 to the value specified in Table 4. Use Figure 2 to locate R1 and C1. Note that these timing components are not used when the handshake control method is selected.

  • Page 14: Specifications

    Specifications Model: 232PE Size: 8"w x 6.3"d x 2.7"h Power: 120Vac 60hz 16w B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Figure 7. Front View Figure 8. Rear View 232PE3095 Manual...

  • Page 15: Appendix A: Cable Charts

    Appendix A: Cable Charts 232PE3095 Manual Appendix A B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094...

  • Page 16: Chart 1. Ibm Pc Db25 Connector To Master Port

    These charts indicate some common cable wiring based on the DCE/DTE configuration of the 232XSS Master Port. Refer to the Port Configuration section of the 232XSS manual for information on Master Port configurations. Chart 1. IBM PC DB25 Connector to Master Port Master Port configured as a DCE port.

  • Page 17: Chart 3. Modem Db25 Connector To Master Port

    Chart 3. Modem DB25 Connector to Master Port Master port configured as a DTE port. Async Modem Serial Port DB25 Connector * Pins 6 & 8 are tied together inside the 232XSS and share the same input. NOTE: When using chart 3 above and connecting a DTE device to ports A - H of the smart switch, refer to Charts 7 and 8.

  • Page 18: Chart 5. Ibm Pc Db25 Connector To Ports A - D (Dte

    Chart 5. IBM PC DB25 Connector to Ports A - D (DTE) Master port of 232XSS configured as a DCE port. IBM PC Serial Port DB25 Connector * Pins are tied together inside the 232PE and share the same input. Chart 6.

  • Page 19: Chart 7. Ibm Pc Db25 Connector To Ports A - D (Dte

    Chart 7. IBM PC DB25 Connector to Ports A - D (DTE) Master port of 232XSS configured as a DTE port with a modem connected (see Chart 3). IBM PC Serial Port DB25 Connector * Pins 6 & 8 are tied together inside the 232PE and share the same input.

  • Page 20: Chart 9. Rs-422/485 4-Wire Device To Port (A - D)

    Chart 9. RS-422/485 4-Wire Device to Port (A - D) Configured Master port of 232XSS configured as an RS-232 DCE port. RS-422/485 4-Wire Device TD (A)* TD (B)* Signal Ground RD (A)* RD (B)* * If the device being connected uses "+" and "-" in place of "B" and "A", the "+"...
  • Page 21 FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFACE STATEMENT Class A Equipment This equipment has been tested and found to comply with the limits for Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

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