Black Box IC108A Instruction Manual
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Black Box IC108A Instruction Manual

Rs-232↔485/422 converter plus; rs-232↔485/422 opto-isolator/converter
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RS-232↔485/422 Converter Plus
RS-232↔485/422 Opto-Isolator/Converter
CUSTOMER
SUPPORT
INFORMATION
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
JANUARY 2005
IC108A
IC109A-R3
IC108C
IC109C
IC108AE
IC109AE

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  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 FCC AND IC RFI STATEMENTS FEDERAL COMMUNICATIONS COMMISSION 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 B of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference when the equipment is...
  • Page 3 RS-232↔485/422 CONVERTERS 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 4 NOM STATEMENT 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.
  • Page 5 RS-232↔485/422 CONVERTERS TRADEMARKS USED IN THIS MANUAL AT and IBM are registered trademarks of International Business Machines Corporation. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 6: Table Of Contents

    CONTENTS Contents Chapter Page Specifications........... . . 6 Introduction .

  • Page 7: Specifications

    Storage: -4 to +158°F (-20 to +70°C) Humidity: Up to 95% relative humidity, noncondensing Power: PS154 (for use with IC108A, IC109A-R3): Input: 120 V, 60 Hz, 20 W; Output: AC 17 VCT, 0.7 A; PS154E (for use with IC108AE, IC109AE): Input: 230 V, 50 Hz, 20 W;...

  • Page 8: Introduction

    64 devices can be linked together using twisted-pair cable. Models without opto-isolation include IC108A, IC108AE, and IC108C. Models with opto-isolation (IC109A-R3, IC109AE, and IC109C) protect equipment from differences in ground potentials on one side of the unit to the other side of the unit.

  • Page 9: Installation

    RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS 3. Installation This section describes the jumper and switch functions for configuring the converter. See Figure 1 on the next page for the component locations. To install your RS-232↔485/422 Converter Plus or RS-232↔422/485 Opto- Isolator/Converter: 1. Set each of the ten jumpers/switches for your application. 2.
  • Page 10 CHAPTER 3: Installation NOTE When the jumper W9 (CTS) is in the ON position and jumper W15 is in the A-B position, the RS-485 driver is always turned on to enable data transmission. Therefore, half-duplex transmission is not possible. See Section 3.1.5 for the RS-485 driver’s explanation.

  • Page 11: Cts Delay (W9 Jumper)

    RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS 3.1.4 CTS D (W9 J ELAY UMPER When the converter’s transmitter is first turned on, an unstable carrier signal is transmitted for several milliseconds. If data was sent during this period, it’s received as distorted information. Setting a CTS delay on the RS-232↔485/422 converter allows the communications link to settle down before data can be sent.

  • Page 12: Half-Duplex Turnaround Delay

    CHAPTER 3: Installation Driver Enabled by Data The RS-485 driver can also be enabled without asserting an RS-232 control lead. When jumper W15 is placed in the B-C position, the driver is enabled when data is received on the RS-232 port of the RS-232↔485/422 converter. As soon as the first bit of the first character is received at the RS-232 port, the RS-485 driver is enabled and an internal timer is started.

  • Page 13: Normal/Loopback Operation

    RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Point-to-Point When only two devices are connected to the line in a point-to-point application, each device should have the termination network connected to the line. Set switch S2 to the “TERM” position (see Figures 5 and 6). Multipoint For multipoint applications, switch S2 should be in the “UNTERM”...

  • Page 14: Dce/Dte Configuration

    CHAPTER 3: Installation 3.2 DCE/DTE Configuration This section contains block diagrams (Figures 2 and 4) and jumper and switch settings (Tables 1 and 2) for DCE/DTE operation. For a detailed description of the jumpers and switches, see Section 3.1. Figure 2. Simplified functional block diagram (DCE operation).
  • Page 15 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Table 1. DCE jumper settings. NOTE For additional information on the jumper requirements, see Section 3.1. Function Jumper Requirements 1. Configure the RS-232 port as DCE XW1 in A position 2. Signal ground connected to frame ground •...
  • Page 16 CHAPTER 3: Installation Table 1 (continued). DCE jumper settings. Function Jumper Requirements 5. Enable the RS-485 driver a. RS-485 driver is enabled by RS-232 control leads • by RTS W15 in A-B position and See Section 3.1.5 for more W9 in 0-ms position information.
  • Page 17 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Table 1 (continued). DCE jumper settings. Function Jumper Requirements 7. RS-485 interface is terminated or unterminated • Terminated S2 in TERM position (ON) • Unterminated S2 in UNTERM position (OFF) See Section 3.1.7 for more information. 8.
  • Page 18 CHAPTER 3: Installation Figure 3. Line bias. S2 shows the line termination when “Term” is selected. S3 shows line bias when “Bias” is selected.
  • Page 19 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Opto-isolated barrier in IC109 models Figure 4. Simplified functional block diagram (DTE operation). NOTE The delay settings for W9 apply only to the RS-232↔485/422 converter’s CTS output. Since CTS is not used when the RS-232↔485/422 converter is configured as a DTE device, placing jumper W9 in either the 0-, 10-, or 30-msec position will allow the CD input to enable the RS-485 driver.
  • Page 20 CHAPTER 3: Installation Table 2. DTE jumper settings. NOTE For additional information on the jumper requirements, see Section 3.1. Function Jumper Requirements 1. Configure the RS-232 port as DTE XW1 in B position 2. Signal ground connected to frame ground •...
  • Page 21 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Table 2 (continued). DTE jumper settings. Function Jumper Requirements b. RS-485 driver is enabled by data W15 in B-C position and • Disable timeout delay W17 msec 0.15 c. RS-485 driver is constantly enabled W9 in ON position 6.

  • Page 22: Typical Applications

    CHAPTER 3: Installation Table 2 (continued). DTE jumper settings. Function Jumper Requirements 9. RS-485 Interface Line Biased (Fail- S3 Off No line bias Safe), Receive S3 On Line biased NOTE If line bias is on, the RS-485 CD will ALWAYS be on. 3.3 Typical Applications This section describes some typical applications where the RS-232↔485/422 converter might be used.
  • Page 23 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Figure 5. Point-to-point, 4-wire (full or half-duplex). Figure 6. Point-to-point, 2-wire (half-duplex).
  • Page 24 CHAPTER 3: Installation Figure 7 shows a typical multipoint, 4-wire, half-duplex connection. Figure 8 shows a typical multipoint, 2-wire, half-duplex connection. In the multipoint applications depicted in Figures 7 and 8, the devices at the extreme opposite ends of the installation are terminated by setting switch S2 to the TERM position.
  • Page 25 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Figure 8. Multipoint, 2-wire (half-duplex).
  • Page 26 CHAPTER 3: Installation Example: 2-Wire Multipoint Configuration Using RTS Enable In the following application, an industrial controller is used to gather information from several remote programmable logic controller (PLC) stations (see Figure 9). A system protocol has been defined such that all the programmable logic controllers receive the information sent by the industrial controller, but only the remote station specifically addressed will respond.
  • Page 27 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS 4. After a remote station has been addressed, data transmission can occur between that station and the industrial controller until the industrial controller sends a “CLEAR” command. This command causes the remote PLC to resume data logging while waiting to be addressed again. In this application, set each RS-232↔485/422 converter for half-duplex operation (jumper W8 in the “HALF”...

  • Page 28: Appendix: Pinning

    APPENDIX: Pinning Appendix. Pinning Tables 3 and 4 show the RS-232 and RS-485 interface pinnings. Table 3. RS-232 interface. NOTE Pins 9 through 25 are not used. Circuit Description Signal Type Direction when configured as Protective Ground Ground — — Transmitted Data Data Input...
  • Page 29 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Table 4. RS-485 pinning chart. Pin Name Description ↔ TXA and TXB Data received by the RS-232 485/422 converter at the TXA=TX- RS-232 port is transmitted out of the unit over twisted- TXB=TX+ pair wires via these two outputs. The TX LED indicates the state of these two leads.

  • Page 30: Quick Reference: User-Selectable Options

    QUICK REFERENCE: User-Selectable Options Quick Reference: User-Selectable Options Use this list as a quick-reference guide when you need to change the jumper settings. An asterisk (*) designates the factory-preset jumper settings. XW1A DCE* XW1B A-B* 4-wire 2-wire A-B* RTS/CD enabled Data enabled (Maximum speed is 64K.) A-B* RTS/CTS delay (normal)
  • Page 31 RS-232↔485/422 CONVERTERS RS-232↔485/422 CONVERTERS Turnaround delay (When W8 is in the B-C [2 wire] position, this is the time after the driver is disabled and before the receiver is enabled.) 0 msec 0.1 msec 1 msec 5 msec 35 msec NOTES 1.
  • Page 32 © Copyright 2005. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
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