Black Box IC187C, IC133C-R2 manual RS-232 and RS-422/485, Electrical Interface Selection

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2-PORT RS-232/422/485 PCI HOST ADAPTER

3.4 Electrical Interface Selection

Each port on the Adapter has the ability to be used in either RS-232 or RS-422/485 mode. This is selectable via four 24 pin DIP-shunts at E1-E4. Please use the following illustration to aid in the configuration of your electrical interface.

RS-422 RS-232 RS-422 RS-232

E1

232-

RS

1

Port

422

E2

-

RS

E3

-232

RS

2

Port

422

E4

-

RS

RS-232

RS-422/485

-232

E1

RS

1

422

Port

-

E2

RS

-232

E3

RS

2

422

Port

E4

-

RS

RS-232 and RS-422/485

Figure 3-7. Headers E1 through E4, which control electrical-interface

selection.

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Contents Port RS-232/422/485 PCI Host Adapter FCC and IC Statements Port RS-232/422/485 PCI Host Adapter NOM Statement Trademarks Table of Contents Contents Number of Ports 2 RS-232/422/485 Connectors 2 DB9 male SpecificationsIntroduction OverviewWhat’s Included Introduction Factory Default SettingsRS-485 Enable Modes Card SetupCard Setup Line Termination Address and IRQ selectionName Function Electrical Interface Selection RS-232 and RS-422/485Clock Modes DIV1 DIV2 DIV410. Clocking mode divide by Baud Rates and Divisors for the Div1 ModeFor this Data Rate Choose this Divisor Baud Rates and Divisors for the Div2 mode Divisors for the Div 2 Mode Setting Up the Operating System InstallationInstallation Installing the HardwareSerial Utility Diskette TroubleshootingShipping and Packaging Calling Black BoxPurpose and Early History of Interrupts Appendix a Interrupt HandlingWhy Use an Interrupt Status Port ISP? RS-232 Appendix B Connector PinoutsRS-422/485 RS-422 Appendix C Electrical InterfacesRS-485 Appendix D Asynchronous Communication Figure D-1. Bit diagram for asynchronous communicationAppendix D Asynchronous Communication J2C Appendix E Board LayoutPage Page Copyright 2000. Black Box Corporation. All rights reserved