GE 90-30/20/Micro User Manuals

Table of Contents

• Chapter 1 Introduction

  19
• Chapter 2 System Operation

  21
  • Section 1: PLC Sweep Summary

    22
    • Standard Program Sweep

      22
    • Programmer Communications Window

      29
    • System Communications Window (Models 331 and Higher)

      30
    • PCM Communications with the PLC

      32
    • Standard Program Sweep Variations

      33
    • Key Switch on 350 and 360 Series CPUs: Change Mode and Flash Protect

      34
  • Section 2: Program Organization and User References/Data

    36
    • Subroutine Blocks (Series 90-30 PLC only)

      36
    • User References

      40
    • Transitions and Overrides

      41
    • Retentiveness of Data

      41
    • Data Types

      43
    • System Status References

      44
    • Function Block Structure

      46
    • Function Block Parameters

      48
  • Section 3: Power-Up and Power-Down Sequences

    50
    • Power-Up

      50
    • Power-Down

      53
  • Section 4: Clocks and Timers

    54
    • Elapsed Time Clock

      54
    • Time-of-Day Clock

      54
    • Watchdog Timer

      55
    • Constant Sweep Timer

      55
    • Time-Tick Contacts

      55
  • Section 5: System Security

    56
    • Passwords

      56
    • Privilege Level Change Requests

      57
    • Locking/Unlocking Subroutines

      57
  • Section 6: Series 90-3090-20, and Micro I/O System

    58
    • Model 30 I/O Modules

      59
    • I/O Data Formats

      61
    • Default Conditions for Model 30 Output Modules

      61
    • Diagnostic Data

      61
    • Global Data

      62
    • Model 20 I/O Modules

      62
    • Micro PLCs

      63
• Chapter 3 Fault Explanation and Correction

  64
  • Section 1: Fault Handling

    65
    • Alarm Processor

      65
    • Classes of Faults

      65
    • System Reaction to Faults

      66
    • Fault References

      67
    • Fault Reference Definitions

      68
    • Additional Fault Effects

      68
    • PLC Fault Table Display

      68
    • I/O Fault Table Display

      68
    • Accessing Additional Fault Information

      69
  • Section 2: PLC Fault Table Explanations

    70
    • Fault Actions

      71
  • Section 3: I/O Fault Table Explanations

    80
    • Loss of I/O Module

      80
    • Addition of I/O Module

      81
• Chapter 4 Series 90-30/20/Micro Instructions Set

  82
  • Section 1 : Relay Functions

    83
  • Section 2 : Timers and Counters

    90
  • Section 3 : Math Functions

    107
  • Section 4 : Relational Functions

    122
  • Section 5 : Bit Operation Functions

    128
  • Section 6 : Data Move Functions

    150
  • Section 7 : Table Functions

    167
  • Section 8 : Conversion Functions

    175
  • Section 9 : Control Functions

    188
• Appendix A Instruction Timing

  267
• Appendix B Interpreting Fault Tables

  277
  • PLC Fault Table

    278
  • I/O Fault Table

    284
• Appendix C Instruction Mnemonics

  289
• Appendix D Key Functions

  292
• Appendix E Using Floating-Point Numbers

  296
  • Floating-Point Numbers

    296
  • Internal Format of Floating-Point Numbers

    298
  • Values of Floating-Point Numbers

    299
  • Entering and Displaying Floating-Point Numbers

    300
  • Errors in Floating-Point Numbers and Operations

    301
• Index

  303