Table Of Contents - Mitsubishi Electric MELDAS 60 Series Programming Manual

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
4. Parameters 7
4.1 PLC Constants ........................................................................................... 7
4.2 Bit Selection Parameters ............................................................................ 8
5. Explanation of Devices ..................................................................................... 12
5.1 Devices and Device Numbers .................................................................... 12
5.2 Device List .................................................................................................. 12
5.3 Detailed Explanation of Devices ................................................................. 13
5.3.1 Input/output X, Y ................................................................................. 13
5.3.2 Internal Relays M and F, Latch Relay L............................................. 14
5.3.3 Special Relays SM............................................................................. 14
5.3.4 Timer T .............................................................................................. 15
5.3.5 Counter C .......................................................................................... 17
5.3.6 Data Register D ................................................................................. 17
5.3.7 File Register R ................................................................................... 18
5.3.8 Index Registers Z............................................................................... 19
5.3.9 Nesting N ........................................................................................... 20
5.3.10 Pointer P .......................................................................................... 21
5.3.11 Decimal Constant K ......................................................................... 22
5.3.12 Hexadecimal Constant H ................................................................. 22
6. Explanation of Commands ............................................................................... 23
6.1 Command List ............................................................................................ 23
6.1.1 Basic Commands............................................................................... 23
6.1.2 Function Commands.......................................................................... 24
6.1.3 Exclusive commands ......................................................................... 30
6.2 Command Formats..................................................................................... 31
6.2.1 How to Read the Command Table..................................................... 31
6.2.2 No. of Steps ....................................................................................... 32
6.2.3 END Command.................................................................................. 33
6.2.4 Index Ornament ................................................................................. 33
6.2.5 Digit Designation................................................................................ 34
7. Basic Commands
(LD, LDI, AND, ANI, OR, ORI, ANB, ORB .....) ................................................. 37
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