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CONTENTS
CHAPTER 1 BASICS OF PROGRAMMABLE CONTROLLER 1- 1 to 1-14
1.1 Program··········································································································································· 1- 1
1.2 Program Processing Procedure······································································································ 1- 4
1.3 MELSEC-QnUD Module Configuration···························································································1- 5
1.4 External I/O Signal and I/O Number······························································································· 1-11
1.5 System Configuration and I/O Number of Demonstration Machine··············································· 1-14
CHAPTER 2 OPERATING GX Works2 2- 1 to 2-64
2.1 Features of GX Works2··················································································································· 2- 3
2.1.1 MELSOFT iQ Works················································································································· 2- 7
2.2 Basic Knowledge Required for Operating GX Works2 ··································································· 2- 9
2.2.1 Screen configuration in GX Works2 ························································································· 2- 9
2.2.2 Ladder editor···························································································································· 2-11
2.2.3 Project······································································································································ 2-20
2.3 Operation Before Creating Ladder Program·················································································· 2-22
2.3.1 Starting up GX Works2············································································································ 2-22
2.3.2 Creating a new project············································································································· 2-23
2.4 Preparation for Starting Up CPU···································································································· 2-25
2.5 Creating Ladder Program··············································································································· 2-32
2.5.1 Creating a ladder program using the function keys································································· 2-32
2.5.2 Creating a ladder program using the tool buttons··································································· 2-34
2.6 Converting Program (Ladder Conversion)····················································································· 2-36
2.7 Writing/Reading Data to/from Programmable Controller CPU······················································· 2-37
2.8 Monitoring Ladder Program Status ································································································ 2-40
2.9 Diagnosing Programmable Controller CPU ··················································································· 2-43
2.10 Editing Ladder Program ··············································································································· 2-45
2.10.1 Modifying a part of the ladder program ················································································· 2-45
2.10.2 Drawing/deleting lines ··········································································································· 2-47
2.10.3 Inserting/deleting rows··········································································································· 2-50
2.10.4 Cutting/copying ladder program ···························································································· 2-55
2.11 Verifying Data······························································································································· 2-58
2.12 Saving Ladder Program ··············································································································· 2-59
2.12.1 Saving newly-created or overwritten projects ······································································· 2-59
2.12.2 Saving a project with another name······················································································ 2-60
2.13 Reading the saved project ··········································································································· 2-61
2.14 Opening Projects in Different Format··························································································· 2-62
2.15 Saving Projects in Different Format ····························································································· 2-63
CHAPTER 3 DEVICE AND PARAMETER OF PROGRAMMABLE CONTROLLER 3- 1 to 3- 6
3.1 Device·············································································································································· 3- 1
3.2 Parameter········································································································································ 3- 3