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CONTENTS
1. System Configuration .................................................................................... 1
1.1 System Configuration for PLC Development ............................................. 1
1.2 User PLC (Ladder) Development Procedure.............................................. 2
2. PLC Processing Program .............................................................................. 3
2.1 PLC Processing Program Level and Operation ......................................... 3
2.2 User Memory Area Configuration .............................................................. 3
3. Input/Output Signals ...................................................................................... 4
3.1 Input/Output Signal Types and Processing ............................................... 4
3.2 Handling of Input Signals Designated for High-Speed Input ..................... 5
3.3 High-Speed Input/output Designation Method ........................................... 6
3.4 Limits for Using High Speed Processing Program ..................................... 7
3.4.1 Separation of Main Processing and High Speed Processing Bit
Operation Areas................................................................................... 7
3.4.2 Separation of Remote I/O Output......................................................... 8
4. Parameters ...................................................................................................... 10
4.1 PLC Constants .......................................................................................... 10
4.2 Bit Selection Parameters ........................................................................... 11
5. Explanation of Devices .................................................................................. 15
5.1 Devices and Device Numbers ................................................................... 15
5.2 Device List ................................................................................................. 15
5.3 Detailed Explanation of Devices ................................................................ 16
5.3.1 Input/output X, Y ................................................................................. 16
5.3.2 Internal Relays M and F, Latch Relay L .............................................. 17
5.3.3 Special Relays SM .............................................................................. 17
5.3.4 Timer T ................................................................................................ 18
5.3.5 Counter C ............................................................................................ 20
5.3.6 Data Register D ................................................................................... 20
5.3.7 File Register R .................................................................................... 21
5.3.8 Index Registers Z ................................................................................ 22
5.3.9 Nesting N ............................................................................................ 23
5.3.10 Pointer P ............................................................................................ 24
5.3.11 Decimal Constant K ............................................................................ 25
5.3.12 Hexadecimal Constant H .................................................................... 25
6. Explanation of Commands ............................................................................ 26
6.1 Command List ........................................................................................... 26
6.1.1 Basic Commands ................................................................................ 26
6.1.2 Function Commands ........................................................................... 27
6.1.3 Exclusive commands ........................................................................... 33
6.2 Command Formats ................................................................................... 34
6.2.1 How to Read the Command Table ...................................................... 34
6.2.2 No. of Steps ........................................................................................ 35
6.2.3 END Command ................................................................................... 36
6.2.4 Index Ornament .................................................................................. 36
6.2.5 Digit Designation ................................................................................. 37