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GPIB-COM
User Manual
June 1990 Edition
Part Number 320197-01
© Copyright 1989, 1991 National Instruments Corporation.
All Rights Reserved.
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National Instruments Corporation 6504 Bridge Point Parkway Austin, TX 78730-5039 (512) 794-0100 (800) IEEE-488 (toll-free U.S. and Canada) Technical support fax: (512) 794-5678
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Limited Warranty The GPIB-COM is warranted against defects in materials and workmanship for a period of two years from date of shipment. National Instruments will repair or replace equipment which proves to be defective during the warranty period. This warranty includes parts and labor. A Return Material Authorization (RMA) number must be obtained from National Instruments before any equipment is returned for repair. Faults caused by misuse are not covered under the warranty. During the warr
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FCC/DOC Radio Frequency Interference Compliance This equipment generates and uses radio frequency energy and, if not installed and used in strict accordance with the instructions in this manual, may cause interference to radio and television reception. This equipment has been tested and found to comply with (1) the limits for a Class B computing device, in accordance with the specifications in Part 15 of U.S. Federal Communications Commission (FCC) Rules, and (2) the limits for radio noise emis
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Preface Introduction to the GPIB-COM The GPIB-COM is a high-performance talk/listen interface board that makes communication possible between IEEE-488 devices and IBM personal computers and compatibles (hereafter referred to as PCs) equipped with software that uses the serial ports. Organization of This Manual This manual is divided into th
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Preface Abbreviations Used in This Manual The following abbreviations are used in the text of this manual. £ is less than or equal to ‡ is greater than or equal to – plus or minus A ampere C Celsius hex hexadecimal in. inch I/O input/output kbyte 1000 bytes m meter Mbyte megabyte MHz megahertz msec millisecond r read r/w read/write sec second V volt VDC volts direct current w write GPIB-COM User Manual vi © National Instruments Corporation
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Contents Section One Introduction 1-1 ................................................
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Contents Line Control Register 5-8 .......................................................................................... Modem Control Register 5-10 .................................................................................... Line Status Register 5-12 ............................................................................................ Modem Status Register....................................................................................... 5-14 Programming the Serial Adapt
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Contents Figures Figure 1-1. GPIB-COM Board 1-2 ................................................................................................ Figure 2-1. GPIB-COM Parts Locator Diagram 2-1 ...................................................................... Figure 2-2. Possible Settings for GPIB-COM Jumpers........................................................... 2-4 Figure 2-3. Jumper W1 Settings 2-4 ........................................................................................
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Section One Introduction This section contains a brief description of the GPIB-COM interface and a list of its characteristics and components. GPIB-COM Characteristics The National Instruments GPIB-COM is a high-performance talk/listen interface that converts data between a standard serial port format and IEEE-488 General Purpose Interfac
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Introduction Section One Figure 1-1 shows the GPIB-COM interface board. Figure 1-1. GPIB-COM Board What Your Kit Should Contain Your kit should contain the following components: Item Part Number GPIB-COM interface board 180750-01 GPIB-COM User Manual 320197-01 GPIB-COM Diagnostic Test Diskette 420212-45 Note: The GPIB-COM Diagnostic Test Diskette contains the com.exe diagnostic test that is described in Section Four, Running Diagnostic Tests. Make sure each of these items is in your kit. If an
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Section One Introduction Optional Equipment Item Part Number Double-Shielded Cables: GPIB Type X2 Cable - 1 m 763061-01 GPIB Type X2 Cable - 2 m 763061-02 GPIB Type X2 Cable - 4 m 763061-03 * In order to meet FCC emission limits for a Class B device, you must use a shielded GPIB cable. Operating this equipment with a non-shielded cable may cause interference to radio and television reception in residential areas. © National Instruments Corporation 1-3 GPIB-COM User Manual
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Section Two Configuration and Installation This section contains information on how to configure and install the GPIB-COM into your system. Configuration Figure 2-1 shows the locations of the GPIB-COM configuration jumpers and switches. Figure 2-1. GPIB-COM Parts Locator Diagram © National Instruments Corporation 2-1 GPIB-COM User Manual
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Configuration and Installation Section Two When installing the GPIB-COM you must determine which serial port the GPIB-COM board will respond to and select the appropriate base address and interrupt level. The GPIB-COM can be configured to one of four base addresses: • 3F8 for Serial Port 1 • 2F8 for Serial Port 2 • 3E8 for Serial Port 3 • 2E8 for Serial Port 4 Note: DOS and BIOS only recognize base addresses 3F8 and 2F8. The GPIB-COM is shipped from the factory set to 3F8. It must be reconfig
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Section Two Configuration and Installation Table 2-1 shows the standard base I/O address and interrupt level for each serial port. Table 2-1. IBM PC Serial Port Adapters Name of Port Base I/O Address (hex) Interrupt Level Serial Port 1 3F8 4 Serial Port 2 2F8 3 Serial Port 3 3E8 Not Used Serial Port 4 2E8 Not Used Switch and Jumper Settings Table 2-2 shows the factory settings and optional configurations for the switches and jumpers on the GPIB-COM. Table 2-2. Factory Default Settings and Opt
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T W2 W2 T/L T T/L W2 W2 Configuration and Installation Section Two Figure 2-2 shows the four possible combinations of jumper settings. W5 W5 XF8 XE8 XF8 XE8 • • 2X8 2X8 3X8 3X8 • • IRQ3 IRQ3 IRQ4 IRQ4 • • a. COM1: Jumpers Set to Base I/O Address b. COM2: Jumpers Set to Base I/O Address 3F8 hex and Interrupt Level 4 (Default) 2F8 hex and Interrupt Level 3 W5 W5 XF8 XE8 XF8 XE8 • • 2X8 2X8 3X8 • 3X8 • IRQ3 IRQ3 IRQ4 IRQ4 • •
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1 234 5 6 7 8 OFF Section Two Configuration and Installation Talk/Listen Address and Special Function Selection The GPIB-COM interface board has eight onboard DIP switches you can use to configure the GPIB controller responsibilities. In the talk/listen mode, the first five switches set the talk or listen address of the external device(s) that will be attached to the GPIB-COM. In the talk-only mode, the GPIB-COM does not send a talk or listen address. The three remaining switches (REN, IFC, an
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1 2 3 45 67 8 OFF Configuration and Installation Section Two Figure 2-5 shows the switch configuration needed when using a device with listen address 10 hex. The listen address varies with each device so check the listen address of your device and set these five bits accordingly. Key = side you must press down for Listen Address 10; Off = 1; On = 0 = used for setting REN* ON, IFC* ON, and SRQ* ON This side down for logic 1 This side down for logic 0 U13 1 2 4 8 16 REN IFC SRQ Figure 2-5. Li
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12 3 4 5 678 OFF Section Two Configuration and Installation Figure 2-6 shows the switch configuration for REN* asserted, IFC* disabled, and SRQ* disabled. Key = side you must press down for REN* ON, IFC* OFF, and SRQ* OFF; Off = 1; On = 0. = used for setting Listen Address This side down for logic 1 This side down for logic 0 U13 1 2 4 8 16 REN IFC SRQ Figure 2-6. Switch Setting for REN* ON, IFC* OFF, and SRQ* OFF Installation Once you have changed, verified, and recorded the switches
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Configuration and Installation Section Two 7. Check the installation. 8. Replace the expansion slot cover of your computer. 9. Connect the GPIB cable to the GPIB-COM. Special Considerations When Using the GPIB-COM The GPIB-COM does not support XON/XOFF protocols. If your application software uses XON/XOFF protocols, send your printer and plotter output to a file on disk. From DOS, send your file to the GPIB-COM by using the DOS command: copy filename COM1: filename COM2: copy The DOS MODE com
