1 Outline........................................................................................................................................................... 1

2 PLC Processing Program............................................................................................................................ 3

2.1 Outline of PLC Processing Project............................................................................................................................ 4

2.2 Multi-Project Function ............................................................................................................................................... 5

2.2.1 Outline .............................................................................................................................................................. 5

2.2.2 Range of Usable Project .................................................................................................................................. 6

2.2.3 Multi-Project Function Usage Steps ................................................................................................................. 6

2.3 PLC Processing Program Level and Operation ........................................................................................................ 7

2.4 Outline of PLC Processing Program (Two Program Method) ................................................................................... 9

2.5 Independent Program Method .................................................................................................................................. 9

2.6 Multi-Program Method............................................................................................................................................. 10

2.6.1 Number and Types of Registerable Programs ............................................................................................... 10

2.6.2 Program Execution Order............................................................................................................................... 11

2.7 User PLC Data Area Configuration and Size .......................................................................................................... 12

2.7.1 Single-Program Method ................................................................................................................................. 13

2.7.2 Multi-Program Method .................................................................................................................................... 13

2.8 Storing PLC Processing Program and Execution Mode ......................................................................................... 14

2.8.1 Path from Storage to Execution ..................................................................................................................... 14

2.8.2 Conversion of Instruction Code at Execution ................................................................................................. 14

2.8.3 How to Confirm the Number of Steps at Storage/Execution .......................................................................... 14

3 Input/Output Signals.................................................................................................................................. 15

3.1 Input/Output Signal Types and Processing............................................................................................................. 16

3.2 Handling of Input Signals Designated for High-Speed Input................................................................................... 17

3.3 PLC Device Assignment of Digital Signal (DI/DO) .................................................................................................. 18

3.3.1 Fixed Device Assignment ............................................................................................................................... 19

3.3.2 Arbitrary Device Assignment .......................................................................................................................... 21

4 Explanation of Devices.............................................................................................................................. 25

4.1 Devices and Device No........................................................................................................................................... 26

4.2 List of Devices......................................................................................................................................................... 27

4.3 Device Range Setting at Multi-project..................................................................................................................... 28

4.3.1 Common Device Among Projects .................................................................................................................. 30

4.3.2 Independent Device among Projects ............................................................................................................. 31

4.3.3 M Device/D Device Commonizing Setting...................................................................................................... 32

4.4 Detailed Explanation of Devices ............................................................................................................................. 34

4.4.1 Input/Output X, Y ............................................................................................................................................ 34

4.4.2 Internal Relays M and F, Latch Relay L ......................................................................................................... 35

4.4.3 Special Relay for Link (SB), Special Register for Link (SW) .......................................................................... 35

4.4.4 Link Relay B, Link Register W ........................................................................................................................ 35

4.4.5 Special Relay SM, Special Register SD ......................................................................................................... 36

4.4.6 Edge Relay V ................................................................................................................................................. 39

4.4.7 Timer T ........................................................................................................................................................... 40

4.4.8 Integrated Timer ST ....................................................................................................................................... 44

4.4.9 Counter C ....................................................................................................................................................... 45

4.4.10 Data Register D............................................................................................................................................ 46

4.4.11 File Register R, ZR ....................................................................................................................................... 47

4.4.12 Index Register Z ........................................................................................................................................... 48

4.4.13 Nesting N...................................................................................................................................................... 49

4.4.14 Pointer P....................................................................................................................................................... 50

4.4.14.1 General Pointers.................................................................................................................................. 51

4.4.14.2 Local Pointers ...................................................................................................................................... 51

4.4.14.3 Common Pointers ................................................................................................................................ 52

4.4.14.4 Reserved Pointers ............................................................................................................................... 53

4.4.15 Decimal Constant K...................................................................................................................................... 54

4.4.16 Hexadecimal Constant H.............................................................................................................................. 54

4.4.17 Real Constant E ........................................................................................................................................... 55

4.4.18 Character String Constant $ ......................................................................................................................... 55

Contents