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Black Box IC109A, IC109C Line Bias. S2 shows the line termination when, RS-232↔485/422 CONVERTERS

Models: IC109AE IC109A-R2 IC109C IC108C IC109A RS-232485/422 Converter Plus, RS-232485/422 Opto-Isolator/Converter IC108A IC108AE

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RS-232↔485/422 CONVERTERS

Figure 3. Line Bias. S2 shows the line termination when

“Term” is selected. S3 shows line bias when “Bias” is selected.

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Black Box IC109C, IC108A, IC109AE, IC109A-R2 Line Bias. S2 shows the line termination when, RS-232↔485/422 CONVERTERS

Contents

CONVERTER RS-232↔485/422 Converter Plus RS-232↔485/422 Opto-Isolator/ConverterAPRIL IC108A IC109A IC108C IC109A-R2 IC108AE IC109C IC109AE 232↔485/422RADIO FREQUENCY INTERFERENCE STATEMENTS FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADAFCC AND IC RFI STATEMENTS RS-232↔485/422 CONVERTERS NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENTINSTRUCCIONES DE SEGURIDAD NOM STATEMENT RS-232↔485/422 CONVERTERS TRADEMARKS USED IN THIS MANUALCONTENTS ContentsChapter RS-232↔485/422 CONVERTERS 1. SpecificationsSpeed CHAPTER 1 SpecificationsDistance RS-232↔485/422 CONVERTERS 2. Introduction3.1 Jumper and Switch Configuration 3. InstallationCHAPTER 3 Installation RS-232↔485/422 CONVERTERS Figure 1. Layout of the Printed Circuit BoardRS-232↔485/422 Converter as DCE XW1A 8-Position Shunt 3.1.4 CTS DELAY W9 JUMPER3.1.5 RS-485 DRIVER ENABLE W15 Driver Enabled by RS-232 Control LeadsRS-232↔485/422 CONVERTERS Driver Enabled by DataDriver Constantly Enabled 4 Wire Only 3.1.6 HALF-DUPLEX TURNAROUND DELAYLoopback Point-to-PointMultipoint NormalFigure 2. Simplified Functional Block Diagram DCE Operation 3.2 DCE/DTE ConfigurationRS-232↔485/422 CONVERTERS CHAPTER 3 Installation Table 1. DCE Jumper SettingsFunction Jumper RequirementsJumper Requirements Table 1 continued. DCE Jumper SettingsRS-232↔485/422 CONVERTERS FunctionJumper Requirements Table 1 continued. DCE Jumper SettingsCHAPTER 3 Installation FunctionFigure 3. Line Bias. S2 shows the line termination when “Term” is selected. S3 shows line bias when “Bias” is selectedRS-232↔485/422 CONVERTERS CHAPTER 3 Installation Figure 4. Simplified Functional Block Diagram DTE OperationOpto-isolated barrier in IC109 models Jumper Requirements Table 2. DTE Jumper SettingsRS-232↔485/422 CONVERTERS FunctionJumper Requirements Table 2 continued. DTE Jumper SettingsCHAPTER 3 Installation FunctionFunction 3.3 Typical ApplicationsTable 2 continued. DTE Jumper Settings RS-232↔485/422 CONVERTERSFigure 6. Point-to-Point, 2-Wire Half-Duplex Figure 5. Point-To-Point, 4-Wire Full- or Half-DuplexCHAPTER 3 Installation RS-232↔485/422 CONVERTERS Figure 7. Multipoint, 4-Wire Half- or Full-DuplexSample 4-Wire Multipoint Configuration Figure 8. Multipoint, 2-Wire Half-DuplexCHAPTER 3 Installation Figure 9. Sample Multipoint Operation Installation Procedure for the Multipoint Application in FigureRS-232↔485/422 CONVERTERS RS-485 driver to be enabled via the RS-232 control lead CHAPTER 3 InstallationDescription when configured asTable 3. RS-232 interface denotes pins that are used Appendix A. PinningAPPENDIX A Pinning Table 4. RS-485 pinning chartPin Name DescriptionRS-232↔485/422 CONVERTERS Quick Reference User-Selectable OptionsXW1A XW1BQUICK REFERENCE USER-SELECTABLE OPTIONS 1000 Park Drive Lawrence, PA 15055-1018 724-746-5500 Fax Copyright 2002. Black Box Corporation. All rights reserved