Mitsubishi MELSEC-A series, Programming Manual

Page: 8 / 508

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