Table of Contents
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Thank you for purchasing the Mitsubishi MELSEC-Q Series (Q mode) and MELSEC-QnA Series of
Programmable Logic Controllers.
Before using the product, please read this manual carefully to develop full familiarity with the functions and
performance of the Programmable Logic Controller Q Series (Q mode)/QnA Series you have purchased, so
as to ensure correct use.
A copy of this manual should be forwarded to the end User.
1.1 Related Programming Manuals ............................................................................................................. 1 - 1
1.2 Abbreviation and Generic Name............................................................................................................ 1 - 4
2.1 Types of Instructions .............................................................................................................................. 2 - 1
2.2 How to Read Instruction Tables............................................................................................................. 2 - 2
2.3 Sequence Instructions............................................................................................................................ 2 - 4
2.3.1 Contact Instruction........................................................................................................................... 2 - 4
2.3.2 Connection instructions ................................................................................................................... 2 - 5
2.3.3 Output instructions........................................................................................................................... 2 - 6
2.3.4 Shift instructions .............................................................................................................................. 2 - 6
2.3.5 Master control instructions............................................................................................................... 2 - 7
2.3.6 Termination instruction .................................................................................................................... 2 - 7
2.3.7 Other instructions............................................................................................................................. 2 - 7
2.4 Basic Instructions ................................................................................................................................... 2 - 8
2.4.2 Arithmetic operation instructions ..................................................................................................... 2 - 14
2.4.3 Data conversion instructions ........................................................................................................... 2 - 19
2.4.4 Data transfer instructions................................................................................................................. 2 - 21
2.4.5 Program branch instruction ............................................................................................................. 2 - 23
2.4.6 Program execution control instructions........................................................................................... 2 - 23
2.4.7 I/O refresh instructions .................................................................................................................... 2 - 23
2.4.8 Other convenient instructions.......................................................................................................... 2 - 24
2.5 Application Instructions .......................................................................................................................... 2 - 25
2.5.1 Logical operation instructions .......................................................................................................... 2 - 25
2.5.2 Rotation instructions ........................................................................................................................ 2 - 27
2.5.3 Shift instructions .............................................................................................................................. 2 - 28
2.5.4 Bit processing instructions............................................................................................................... 2 - 28
2.5.5 Data processing instructions ........................................................................................................... 2 - 29
2.5.6 Structure creation instructions......................................................................................................... 2 - 32
2.5.7 Table operation instructions ............................................................................................................ 2 - 33
2.5.8 Buffer memory access instructions ................................................................................................. 2 - 34
2.5.9 Display instructions.......................................................................................................................... 2 - 34
2.5.10 Debugging and failure diagnosis instructions ............................................................................... 2 - 35
2.5.11 Character string processing instructions....................................................................................... 2 - 36
A - 3
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INTRODUCTION
CONTENTS
1 - 1 to 1 - 4
2 - 1 to 2 - 49
A - 3
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Table of Contents
