Mitsubishi MELSEC-A series Programming Manual

A − 6
CONTENTS
1. INTRODUCTION ......................................................................................................................1 − 1 ~ 1 − 3
2. INSTRUCTIONS.....................................................................................................................2 − 1 ~ 2 − 24
2.1 Classification...............................................................................................................................2 − 1
2.2 Instruction List.............................................................................................................................2 − 2
2.2.1 Explanation for instructions lists ....................................................................................2 − 2
2.2.2 Sequence instructions ...................................................................................................2 − 5
2.2.3 Basic instructions...........................................................................................................2 − 8
2.2.4 Application instructions................................................................................................2 − 16
3. INSTRUCTION STRUCTURE ................................................................................................3 − 1 ~ 3 − 25
3.1 Instruction Structure....................................................................................................................3 − 1
3.2 Bit Processing.............................................................................................................................3 − 3
3.2.1 1-bit processing .............................................................................................................3 − 3
3.2.2 Digit specification processing ........................................................................................3 − 3
3.3 Handling of Numeric Values........................................................................................................3 − 6
3.4 Storing 32-bit Data......................................................................................................................3 − 8
3.5 Index Qualification ....................................................................................................................3 − 10
3.6 Subset Processing....................................................................................................................3 − 12
3.7 Operation Error .........................................................................................................................3 − 12
3.8 Cautions on Using AnA, A2AS, AnU, QCPU-A (A Mode) and A2USH board ...........................3 − 14
3.8.1 The number of steps used in instructions....................................................................3 − 14
3.8.2 Instructions of variable functions .................................................................................3 − 16
3.8.3 Set values for the extension timer and counter ...........................................................3 − 17
3.8.4 Cautions on using index qualification ..........................................................................3 − 17
3.8.5 Storing 32-bit data in index registers ...........................................................................3 − 20
3.9 Operation when the OUT Instruction, SET/RST Instruction and
PLS/PLF Instruction are from the Same Device .........................................................................3 − 21
4. INSTRUCTION FORMAT .........................................................................................................4 − 1 ~ 4 − 4
5. SEQUENCE INSTRUCTIONS................................................................................................5 − 4 ~ 5 − 43
5.1 Contact Instructions....................................................................................................................5 − 2
5.1.1 Operation start, series connection,parallel connection
(LD, LDI, AND, ANI, OR, ORI)........................................................................................5 − 2
5.2 Connection Instructions ..............................................................................................................5 − 5
5.2.1 Ladder block series connection, parallel connection (ANB, ORB) ................................5 − 5
5.2.2 Operation result push, read, pop (MPS, MRD, MPP) ....................................................5 − 9

Mitsubishi MELSEC-A series Specifications

General

Brand	Mitsubishi
Model	MELSEC-A series
Category	Controller
Language	English