Manuali utente per National Instruments PC-OPDIO-16

Sommario

• PC-OPDIO-16 User Manual

  1
• Support

  2
  • Corporate Headquarters

    2
  • Branch Offices

    2
• Important Information

  3
  • Warranty

    3
  • Copyright

    3
  • Trademarks

    3
  • Warning

    4
• Contents

  5
• About This Manual

  9
  • Organization of This Manual

    9
  • Conventions Used in This Manual

    10
  • National Instruments Documentation

    11
  • Related Documentation

    11
  • Customer Communication

    11
• Chapter 1 Introduction

  12
  • About Your PC-OPDIO-16 Board

    12
  • What You Need to Get Started

    12
  • Software Programming Choices

    13
    • LabVIEW and LabWindows/CVI Application Software

      13
    • NI-DAQ Driver Software

      13
    • Register-Level Programming

      14
  • Optional Equipment

    14
  • Cabling

    15
  • Unpacking

    15
• Chapter 2 Installation and Configuration

  16
  • Hardware Installation

    16
  • Hardware Configuration

    17
    • Bus-Related Configuration

      17
      • Plug and Play Mode

        17
      • Switchless Mode

        17
      • Base I/O Address Selection

        17
    • Data Acquisition-Related Configuration

      18
  • NI-DAQ Software Installation

    18
    • NI-DAQ Installation for DOS

      18
    • NI-DAQ Installation for LabVIEW

      18
    • NI-DAQ Installation for LabWindows/CVI

      19
    • NI-DAQ Installation for Windows

      20
  • Software Configuration

    20
    • Configuring Your PC-OPDIO-16

      20
    • Using DAQCONF

      21
      • NI-DAQ Configuration File

        21
      • Device Configuration in DAQCONF

        22
      • DAQCONF Command-Line Flags

        23
    • Using WDAQCONF

      23
• Chapter 3 Signal Connections

  25
  • I/O Connectors

    26
    • Signal Connection Descriptions

      27
  • Optically Isolated Digital Output

    28
    • Output Channels

      28
      • Signal Isolation

        28
      • Signal Connection Example

        29
      • Increasing Switching Frequency for TTL Loads

        30
      • Power-on Condition

        30
  • Optically Isolated Digital Input

    30
    • Input Channels

      30
      • Sensing DC Voltages

        31
      • Sensing AC Voltages

        31
      • Signal Isolation

        31
      • Signal Connection Example

        31
      • Reducing the Forward Current for 24 V Inputs

        32
      • Power-on Condition

        32
• Chapter 4 Fundamentals of Building Applications with NI-DAQ

  33
  • Building DOS Applications with NI-DAQ

    33
    • Creating a DOS Application Using Microsoft C

      33
      • Example Programs

        34
    • Creating a DOS Application Using Visual Basic

      34
      • Running Your Application Inside the Visual Basic Environment

        36
      • Compiling and Running Your Visual Basic Application from the DOS Prompt

        36
      • Example Programs

        37
    • Creating a DOS Application Using Borland Turbo C++ or Borland C++

      37
      • Example Programs

        38
    • Creating a DOS Application Using Borland Turbo Pascal

      38
      • Memory Requirement

        39
      • Example Programs

        39
  • Building Windows Applications with NI-DAQ

    39
    • The NI-DAQ Libraries

      40
    • NI-DAQ Programming Considerations

      40
    • Buffer Allocation

      40
      • Huge (Greater Than 64 KB) Buffer Access

        41
      • String Passing

        41
      • Parameter Passing

        41
    • Creating a Windows Application Using Borland C++

      41
      • Example Programs

        42
      • Special Considerations

        42
        • Buffer Allocation

          42
        • Huge Buffer Access

          42
        • String Passing

          42
        • Parameter Passing

          42
    • Creating a Windows Application Using Microsoft Visual C++

      43
      • Special Considerations

        43
    • Creating a Windows Application Using Turbo Pascal

      43
      • Example Programs

        44
      • Special Considerations

        44
        • Buffer Allocation

          44
        • Huge Buffer Access

          45
        • String Passing

          45
        • Parameter Passing

          45
    • Creating a Windows Application Using Microsoft Visual Basic

      46
      • Example Programs

        46
      • Special Considerations

        46
        • Buffer Allocation

          46
        • Huge Buffer Access

          47
        • String Passing

          47
        • Parameter Passing

          47
• Chapter 5 Theory of Operation

  48
  • Functional Overview

    48
  • Theory of Operation

    49
    • I/O Channel Interface Circuitry

      49
    • Digital I/O Circuitry

      49
    • Optical Isolation Circuitry

      50
    • Using NI-DAQ Functions for Isolated Digital I/O

      51
    • Using LabVIEW Data Acquisition Library for Digital I/O

      52
      • Easy I/O VIs

        52
      • Advanced VIs

        52
• Chapter 6 NI-DAQ Function Reference

  53
  • Using NI-DAQ Functions

    53
    • Status Codes

      53
    • Variable Data Types

      53
      • Primary Types

        54
    • Programming Language Considerations

      54
      • Visual Basic for DOS

        55
      • Borland Turbo Pascal

        55
      • Visual BASIC for Windows

        55
        • NI-DAQ Constants Include File

          55
    • NI-DAQ for LabWindows/CVI

      56
      • Device Numbers

        57
  • Function Descriptions

    57
    • DIG_In_Line

      57
    • DIG_In_Port

      58
    • DIG_Out_Line

      59
    • DIG_Out_Port

      60
    • Get_DAQ_Device_Info

      61
    • Get_NI_DAQ_Version

      62
    • Init_DA_Brds

      63
• Appendix A Specifications

  64
• Appendix B CP Clare LDA210 Data Sheet *

  66
• Appendix C Register-Level Programming

  67
• Appendix D Status Codes

  72
• Appendix E Customer Communication

  81
• Glossary

  85
• Index

  87
• Figures

  8
  • Figure 1-1. The Relationship between the Programming Environment,

    14
  • Figure 3-1. PC-OPDIO-16 I/O Connector Pin Assignments

    26
  • Figure 3-2. Signal Connection Example for Isolated Output

    29
  • Figure 3-3. Resistor in Parallel to Increase the Switching Frequency

    30
  • Figure 3-4. Signal Connection Example for Isolated Input

    31
  • Figure 3-5. Reducing Input Current for 24 V Signals

    32
  • Figure 5-1. PC-OPDIO-16 Block Diagram

    48
  • Figure 5-2. PC I/O Interface Circuitry Block Diagram of PC-OPDIO-16

    49
  • Figure 5-3. Optical Isolation Circuitry for Input

    50
  • Figure 5-4. Optical Isolation Circuitry for Output

    50
• Tables

  8
  • Table 6-1. Status Values

    53
  • Table 6-2. Primary Type Names

    54
  • Table 6-3. LabWindows/CVI Function Tree for Data Acquisition

    56
  • Table D-1. Status Code Summary

    72