Mitsubishi Electric MELSEC-A A2CCPU Manuals

Table of Contents

• • 6

    Table of Contents

• 10

  1 Introduction

  • 10

    General Description of Operation
    • 10

      ON/OFF Data Communication Between the A2C and the Remote I/O Module
  • 13

    Features
  • 17

    General Terms and Abbreviations
  • 19

    Reference Manuals

• 20

  2 System Configuration

  • 20

    Overall Configuration
  • 22

    Notes On System Construction
  • 27

    System Equipment
    • 27

      Modules Which Can Be Connected to the A2CCPU
    • 34

      Peripheral Devices

• 36

  3 General Specifications

• 37

  4 A2Ccpu

  • 37

    Performance
    • 40

      Repeated Operation Processing
    • 40

      In~Ial Processing
    • 41

      END Processing
    • 42

      Timer Processing and Accuracy
    • 44

      Counter Processing and Maximum Counting Speed
    • 45

      Operation Processing at Momentary Power Failure
    • 46

      Scan Time
    • 47

      Watch Dog Timer (Wdl)
    • 49

      RUN. STOP. PAUSE Operation Processing
  • 54

    Functions
    • 55

      Constant Scan
    • 58

      Power Failure Compensation for Device Data in the A2C (LATCH Function)
    • 60

      Running and Stopping the A2C From External Devices (Remote RUN/STOP Function)
    • 64

      Status Latch
    • 66

      Sampling Trace
    • 69

      Offline Sw~Ch Function
    • 71

      Setting Priority for ERROR LED Indication
    • 73

      Control Functions of Remote I/O Modules and Remote Terminal Modules
    • 77

      4.2.10 Output From the ERR Terminals
  • 78

    Fault Detection
    • 83

      Fault Detection with Annunciator (F)
    • 89

      Memory Capacity Setting
    • 91

      Operation Mode at an Occurrence of Error
    • 92

      STOP -+ RUN Output Mode
    • 93

      Entry Code Registration
    • 93

      Print Title Registration
  • 94

    Devices
    • 94

      Device List
  • 96

    Instructions
    • 96

      Sequence Instructions
    • 98

      Basic Instructions
    • 104

      Application Instructions
  • 112

    Precautions On Handling
  • 113

    Part Identification 4 - N
  • 113

    Part Identification
    • 120

      4.10.1 External View of A2CCPUP21/R21
    • 128

      4.10.2 Setting for MELSECNET Data Link

• 131

  5 MEMORY Ica, BATTERY, CABLES and DIN ADAPTER

  • 131

    Memory Ics
    • 131

      Specifications
    • 131

      Handling Instructions
    • 131

      Installation
  • 133

    Battery
    • 133

      Handling Instructions
  • 135

    Cables
  • 137

    DIN Adapter
    • 137

      Specifications
    • 137

      Handling Instructions
    • 139

      Fixing a DIN Adapter to a Module
    • 140

      Mounting to the DIN Rail

• 141

  6 Loading and Installation 6 -1

  • 141

    Fail-Safe Circuit
  • 141

    Installation Environment
  • 142

    Calculation of Heat Generated By the A2C System
  • 144

    Wiring
    • 144

      Wiring Instructions
    • 148

      Connection Between Modules
  • 151

    Installing the A2CCPU

• 152

  7 Test Run

  • 152

    Check Points before Test Run
  • 154

    Test Run Procedures

• 156

  8 Maintenance and Inspection

  • 156

    Daily Inspection
  • 157

    Periodic Inspection
  • 158

    Replacement of Battery
    • 158

      Battery Ike
    • 159

      Replacing Procedures

• 160

  9 Troubleshooting

  • 160

    Basic Troubleshooting
    • 161

      Troubleshooting Flow Charts
    • 162

      Flow Chart Used When "POWER" LED of the A2CCPU Has Turned Off
    • 163

      Flow Chart Used When "RUN" LED of the A2CCPU Has Turned Off
    • 164

      Flow Chart Used When "RUN" LED of the A2CCPU Flickers
    • 165

      Flow Chart Used When "ERROR" LED Has Turned On
    • 167

      Flow Chart Used When "ERROR" LED of the A2CCPU Flickers
    • 168

      Flow Chart Used When "RD/SD" Leos of the A2CCPU Do Not Flicker
    • 169

      Flow Chart Used When Output Load of Output Module Does Not Turn On
  • 171

    Error Code Ust
    • 171

      Error Code List
    • 175

      App

• 184

  APPENDIX 1 Outside Dimensions

• 184

  APPENDIX 2 Ust of Special Relays

• 184

  APPENDIX 3 List of Special Registers APP

• 194

  APPENDIX 4 Instructions for Use with Peripheral Devices APP