Black Box IC470A Manual
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Black Box IC470A Manual

Interface converters async rs-232 to rs-422 async rs-232 to rs-422/530
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© Copyright 2000. Black Box Corporation. All rights reserved.
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746

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Summary of Contents for Black Box IC470A

  • Page 1 © Copyright 2000. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
  • Page 2 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 3 FCC/IC RFI STATEMENTS, TRADEMARK USE FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO-FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference...
  • Page 4 RS-232↔RS-422 INTERFACE CONVERTERS DECLARATION OF CONFORMITY This equipment has been tested and found to comply with the European Union’s Electromagnetic Compatibility (EMC) directive and its Low-Voltage Directive (LVD).
  • Page 5 NOM STATEMENT NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
  • Page 6 RS-232↔RS-422 INTERFACE CONVERTERS 10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u otros aparatos (incluyendo amplificadores) que producen calor. 11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indique en el aparato.

  • Page 7: Table Of Contents

    Shipping and Packaging ............30 Appendix A: Cable Guidelines ..............31 Appendix B: RS-232 Pinouts ............... 33 Pinout on DB25 (IC470A through IC472A Models) ..... 33 Pinout on DB9 (IC473A, IC630A, and IC631A Models) ..35 Appendix C: Block Diagrams ..............36 IC470A through IC472A Models ..........

  • Page 8: Specifications

    CE; FCC Part 15 Subpart J Class A, Compliance — IC Class/classe A Interfaces — To devices: EIA/TIA RS-232C: IC470A, IC471A, and IC472A models: Original pinning on DB25; IC473A, IC630A, and IC631A models: Pinned according to TIA-574 on DB9; To line: EIA/TIA RS-422 or (IC471 and...
  • Page 9 Distance — Between device and Converter (RS-232): 50 ft. (15.2 m); Between Converters (RS-422/530): 4000 ft. (1219 m) User Controls — IC470A, IC471A, and IC472A models only: (1) DTE/DCE slide switch (default setting is DCE) Indicators — None Connectors —...
  • Page 10 Up to 95% noncondensing Enclosure — ABS plastic Size — IC470A, IC471A, and IC472A models: 2.2"H x 1.8"W x 0.8"D (5.6 x 4.5 x 1.9 cm); IC473A, IC630A, and IC631A models: 2.5"H x 1.2"W x 0.8"D (6.4 x 3 x 1.9 cm) Weight —...

  • Page 11: Introduction

    Some converter models (the IC473A, IC630A, and IC631A models) have DB9 RS-232 connectors for easy attachment to the current generation of computers and serial cables. The other Converter models (IC470A through IC472A models) have DB25 RS-232 connectors for attachments to modems, older computers and terminals, serial printers, etc.

  • Page 12: Features And Benefits

    • Bidirectionally convert RS-232 signals to balanced RS-422 signals or RS-530 transmit- and receive-data signals. • IC470A, IC471A, and IC472A models can be set as DTE or DCE on RS-232 side. • Passes software flow control, loops back RS-232 hardware flow-control signals.
  • Page 13 CHAPTER 2: Introduction • Data rates to 19,200 bps; RS-422/530 distances to 4000 ft. (1219 m). • Powered through its RS-232 interface. • Extremely compact. • Models available with a variety of RS-422/530 connectors and either DB25 or DB9 RS-232 connectors.

  • Page 14: Configuration (Models With Rs-232 On Db25 Only)

    (see Section 4.1.3). You will have to configure units that carry RS-232 on DB25 connectors—IC470A, IC471A, and IC472A models—as DTE or DCE, using their external DTE/DCE switch. (The IC473A, IC630A, and IC631A models, which carry RS-232 on DB9, are always DCE and have no such switch.)
  • Page 15 CHAPTER 3: Configuration RS-232 Connector (Other end has RS-422/530 connector— terminal block or DB25) Figure 3-1. The DTE/DCE switch on the IC470A, IC471A, and IC472A models of the Converter.

  • Page 16: Installation

    + and – to – doesn’t work, try connecting + to – and – to +. Different models of the Converter have different RS-422 and RS-530 interface connectors: • IC470A and IC473A models have a 5-position terminal block with strain relief. • IC471A models have a DB25 female connector.

  • Page 17: Making An Rs-422 Or Rs-530 Connection To A Db25 (Ic471A And Ic472A Models)

    CHAPTER 4: Installation For models whose RS-232 and RS-422/530 connectors are both DB25 male (IC472A-M) or DB25 female (IC471A-F), the connector farthest from the DTE/DCE switch is the RS-422/530 connector. 4.1.1 M RS-422 RS-530 C DB25 AKING AN ONNECTION TO A (IC471A IC472A M ODELS...

  • Page 18: Making An Rs-422 Connection To An

    RS-232↔RS-422 INTERFACE CONVERTERS 4.1.2 M RS-422 C RJ-12 (IC630A AKING AN ONNECTION TO AN RJ-45 (IC631A M ODELS ODELS The IC630A and IC631A models of the Converter have RJ-12 (“6-wire RJ-11”) female and RJ-45 female RS-422 connectors respectively. These are pinned in a USOC style for a standard telco wiring environment, as shown below: IC630A:...
  • Page 19 CHAPTER 4: Installation In most modular RS-422 applications, you’ll need to run a “crossover” cable between the Converter and the other RS-422 device. This cable should be pinned as shown below for the IC630A models, and as shown on the next page for the IC631A models, with the XMT→RCV wires in one pair and the RCV←XMT wires in another pair: IC630A: RJ-12*...
  • Page 20 RS-232↔RS-422 INTERFACE CONVERTERS IC631A: RJ-45 Lead/ Lead/ Signal* No.* Color† Color† No.* Signal* XMT+ Red ........Yellow RCV+ > XMT– Green .......Black RCV– > RCV+ Yellow ........Red XMT+ < RCV– Black .......Green XMT– < Blue* Orange* Black Green Yellow Brown* Slate* *If the cable is shielded, you can attach one end of the shield to GND (ground, Pin 2 or Pin 7).

  • Page 21: Making An Rs-422 Connection To A 5-Position Terminal Block (Ic470A And Ic473A Models)

    CHAPTER 4: Installation 4.1.3 M RS-422 C AKING AN ONNECTION TO A OSITION (IC470A IC473A M ERMINAL LOCK ODELS If your RS-422 application requires you to attach two pairs of bare wires to a Converter model whose RS-422 connector is an internal terminal block, you will need to open the Converter’s case, connect the wires to the...
  • Page 22 RS-232↔RS-422 INTERFACE CONVERTERS 2. Strip the jacket and outer insulation from the last inch or so (~2.5 cm) of the twisted-pair cable: 3. Strip the insulation from the last quarter-inch or so (~0.6 cm) of each of the cable’s wires:...
  • Page 23 RCV A and RCV B terminals. Note that the ordering of the terminals is reversed in the IC473A-M as opposed to the IC473A-F and the IC470A models: IC473A-F, IC470A-M/F IC473A-M Note that when you connect the cable at the other end, you’ll want to cross-pin the wires this way,...
  • Page 24 RS-232↔RS-422 INTERFACE CONVERTERS 5. If the cable is shielded, you can (if you want) connect the shield to ground at one end of the cable only—at the Converter’s “G” terminal, for example. This is strictly optional; the Converter doesn’t require that you use shielded cable, or a cable with a ground wire, to operate properly.
  • Page 25 6. When you finish connecting the wires to the terminal block, the Converter assembly should resemble the appropriate illustration below. (Here and throughout the rest of this section, the two types of Converter models are not shown to scale with each other.) IC470A models IC473A models...
  • Page 26 (~5 cm) away for the IC470A models, right to the edge of the board for the IC473A models. Now press the halves of the assembly together firmly. (If...
  • Page 27 8. Insert the strain-relief assembly, with the wire going through it, into the matching slot in the bottom half of the Converter case. Set the whole circuit-board/cable-end/strain-relief assembly back into the bottom of the case, as shown below: IC470A models IC473A models...
  • Page 28 RS-232↔RS-422 INTERFACE CONVERTERS 9. Bend the top half of the Converter’s case as necessary to place it over the strain-relief assembly, as shown below. Do not snap the case together yet. 10. The Converter comes with a pair of screws and saddle washers.

  • Page 29: Connecting Devices Or Cables To The Rs-232 Interface

    4.2 Connecting Devices or Cables to the RS-232 Interface Once you’ve connected the RS-422 or RS-530 cable, and (for IC470A through IC472A models) have configured the Converter for DTE or DCE, simply plug the Converter directly into a DB25 or DB9 serial port on the RS-232 device.

  • Page 30: Operation

    RS-232↔RS-422 INTERFACE CONVERTERS 5. Operation Once the Converter is properly installed, it should operate transparently—as if the two attached devices were connected to each other with a simple cable. The Converter gets its operating power from the RS-232 data and control signals; it has no ON/OFF switch, so it will begin operating as soon as the RS-232 device powers up.

  • Page 31: Troubleshooting

    If you determine that your Converter is malfunctioning, do not attempt to alter or repair the unit. It contains no user- serviceable parts. Contact Black Box Technical Support at 724-746-5500. Before you do, make a record of the history of the problem.

  • Page 32: Shipping And Packaging

    If you need to transport or ship your Converter: • Package it carefully. We recommend that you use the original container. • Before you ship the unit back to Black Box for repair or return, contact us to get a Return Authorization (RA) number.

  • Page 33: Appendix A: Cable Guidelines

    APPENDIX A: Cable Guidelines Appendix A: Cable Guidelines The Converter operates at frequencies of 20 kHz or less and has been performance-tested for RS-422/530 using twisted-pair cable with the following characteristics: Wire Gauge Capacitance Resistance 19 AWG 83 nF/mi or 15.7 pF/ft. 16.3 mΩ/ft.
  • Page 34 RS-232↔RS-422 INTERFACE CONVERTERS • Using twisted-pair cable with a resistance greater than that specified in this appendix might reduce the RS-422/530 distance you can run, to below the normal maximum of 4000 ft. (1219 m), but the function of the Converter shouldn’t be affected otherwise.

  • Page 35: Appendix B: Rs-232 Pinouts

    APPENDIX B: RS-232 Pinouts Appendix B: RS-232 Pinouts B.1 Pinout on DB25 (IC470A through IC472A Models) The IC470A, IC471A, and IC472A models of the Converter have a standard RS-232 interface pinned out, as shown on the next page, on a DB25 female (pictured) or male connector.
  • Page 36 RS-232↔RS-422 INTERFACE CONVERTERS Set as DTE Dir. Signal Name (Abbrev.) Pin Signal Name (Abbrev.) Dir. 1 – Frame Ground (FGND) 2 – Transmit Data (TD) 3 – Receive Data (RD) 4 – Request to Send (RTS) 5 – Clear to Send (CTS) 6 –...

  • Page 37: Pinout On Db9 (Ic473A, Ic630A, And Ic631A Models)

    APPENDIX B: RS-232 Pinouts B.2 Pinout on DB9 (IC473A, IC630A, and IC631A Models) The IC473A, IC630A, and IC631A models of the Converter have an RS-232 interface pinned out according to the TIA-574 standard, as shown below, on a PC- compatible DB9 female (pictured) or male connector. These models of the Converter are always DCE;...

  • Page 38: Appendix C: Block Diagrams

    RS-232↔RS-422 INTERFACE CONVERTERS Appendix C: Block Diagrams C.1 IC470A through IC472A Models...

  • Page 39: Ic473A, Ic630A, And Ic631A Models

    APPENDIX C: Block Diagrams C.2 IC473A, IC630A, and IC631A Models...
  • Page 40 NOTES...

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