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IC026A-R2, IC026AE-R2
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71 pages, 312.13 Kb
1000 Pasrk Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746
©Copyright 1998. Black Box Corporation. All rights reserved.
Contents
Main
RS-232IEEE 488 INTERFACE CONVERTER EUROPEAN UNION DECLARATION OF CONFORMITY
WARNING!
Failure to follow these directives voids emission and immunity compliance.
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CONTENTS
Contents
RS-232IEEE 488 INTERFACE CONVERTER
CONTENTS
1. Specifications
WARNING!
CHAPTER 1: Specifications
CAUTION
2. Introduction
2.1 Description
2.2 Abbreviations
CHAPTER 2: Introduction
3. Getting Started
3.1 Inspection
3.2 Configuration
Figure 3-1. Factory-Default Settings.
SW3
SW2
SW1
3.3 Serial Port Settings
Figure 3-2. Switch SW1: Selecting the Serial Baud Rate.
Figure 3-3. Switch SW1: Selecting the Serial Word Length (Data Bits).
Figure 3-4. Switch SW1: Selecting the Serial Stop Bits.
Figure 3-5. Switch SW2: Selecting the Serial Parity.
Figure 3-6. Switch SW2: Enabling or Disabling Echo.
Figure 3-7. Switch SW1: Selecting the Serial Handshake.
3.4 Selecting Terminator Substitution
Figure 3-8. Switch SW2: Selecting the Serial Terminator.
Figure 3-9. Switch SW3: Selecting the IEEE Bus Terminator.
3.5 Selecting the Mode
Figure 3-10. Switch SW2: Selecting the Mode.
3.6 Selecting the IEEE Address
Figure 3-11. Switch SW3: Selecting the IEEE Address.
3.7 Feature Selections
Figure 3-12. Switch SW1: Enabling or Disabling Talk Back on Terminator in Controller Mode.
Figure 3-13. Switch SW2: Enabling or Disabling Talk Back on Timeout in Controller Mode.
Figure 3-14. Switch SW1: Enabling or Disabling SRQ on Last Serial Terminator in Peripheral Mode.
3.8 Serial Interface
Figure 3-15. Selecting RS-232 or RS-422 Signal Levels.
Figure 3-16. Rear View of the Interface Converters Serial Connector.
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3.9 General
CAUTION
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RS-232IEEE 488 INTERFACE CONVERTER 4.1 Controller-Mode (Serial to IEEE) Operation
4. Controller Operation
4.2 Serial and IEEE Terminator Substitution
4.3 IEEE Address Selection
Figure 4-1. Switch SW3: Selecting the IEEE Address.
4.4 Talk-Back Features
Figure 4-2. Switch SW1: Enabling or Disabling Talk-Back on Terminator.
Figure 4-3. Switch SW2: Enabling or Disabling
Talk-Back on Timeout.
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4.5 Plotter Applications
Figure 4-4. A PC-Based Graphics System.
Figure 4-5. Selecting RS-232 Signal Levels.
Figure 4-6. Interface Converter Settings for Use with HP 7580A Plotter on an IBM PC.
SW2
SW3
SW1
Figure 4-7. MacPlot Configuration Screen.
Figure 4-8. A Macintosh Based Graphics System.
Interface Converter
IEEE 488 RS-422
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Figure 4-10. Interface Converter Settings for Use with HP 7580A Plotter on a Macintosh.
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5. Peripheral Operation
5.1 Peripheral-Mode Operation
5.2 Serial and IEEE Input Buffers
5.3 IEEE Data Transfers
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RS-232IEEE 488 INTERFACE CONVERTER
Figure 5-1. Switch SW1: Enabling or Disabling SRQ on Last Terminator.
Figure 5-2. Serial Poll Status Byte.
5.4 Serial-Poll Status-Byte Register
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5.5 Use of Serial and Bus Terminators
5.6 IEEE 488 Bus Implementation
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5.7 IEEE Address Selection
Figure 5-3. SW3 View for IEEE Address Selection.
6. IEEE 488 Primer
6.1 History
6.2 General Structure
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Figure 6-1. IEEE 488 Bus Structure.
6.3 Send It to My Address
6.4 Bus Management Lines
6.5 Handshake Lines
Figure 6-2. IEEE Bus Handshaking.
6.6 Data Lines
6.7 Multiline Commands
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6.8 More on Service Requests
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7.1 Theory of Operation
7. Theory of Operation and Board Layout
7.2 Board Layout
CHAPTER 7: Theory of Operation and Board Layout
Figure 7-1. Component Layout of the Interface Converters Motherboard.
Figure 7-2. Component Layout of the Interface Converters Serial I/O board.
APPENDIX A: Sample Dumb-Terminal Program
Appendix A. Sample Dumb-Terminal Program
Appendix B. Character Codes and IEEE Multiline Messages
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Index
INDEX