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INTRODUCTION
Thank you for purchasing the Mitsubishi general-purpose programmable controller MELSEC-A.
Always read through this manual, and fully comprehend the functions and performance of the A Series
programmable controller before starting use to ensure correct usage of this product.
Make sure that this manual is delivered to the final user.
CONTENTS
Safety Instructions..........................................................................................................................................A- 1
Revisions ........................................................................................................................................................A- 5
About Manuals ...............................................................................................................................................A- 9
Compliance with the EMC/Low Voltage Directive.........................................................................................A- 9
Using This Manual.........................................................................................................................................A- 10
Generic Terms and Abbreviations ................................................................................................................A- 11
Definitions and Details of Terms...................................................................................................................A- 12
1. OUTLINE 1- 1 to 1- 4
1.1 Features ................................................................................................................................................... 1- 2
2. SYSTEM CONFIGURATION 2- 1 to 2- 2
2.1 System configuration ............................................................................................................................... 2- 1
2.2 Applicable systems .................................................................................................................................. 2- 2
3. SPECIFICATIONS 3- 1 to 3- 26
3.1 General specifications.............................................................................................................................. 3- 1
3.2 Performance specifications...................................................................................................................... 3- 2
3.3 RS-232-C interface specifications ........................................................................................................... 3- 3
3.4 General-purpose input/output specifications........................................................................................... 3- 4
3.5 List of functions ........................................................................................................................................ 3- 6
3.6 Input/output signals for master module ................................................................................................... 3- 7
3.6.1 List of input/output signals................................................................................................................. 3- 7
3.6.2 Details of input/output signals........................................................................................................... 3- 8
3.7 R2 buffer memory list.............................................................................................................................. 3- 13
3.8 Transmission delay time ......................................................................................................................... 3- 19
3.9 Transmission/reception time...................................................................................................................3- 20
3.9.1 When using buffer memory automatic update function .................................................................. 3- 20
3.9.2 When using transmission/reception buffer ...................................................................................... 3- 23
4. PROCEDURES AND SETTINGS BEFORE OPERATIION 4- 1 to 4- 12
4.1 Procedures before operation ................................................................................................................... 4- 1
4.2 Precautions for handling .......................................................................................................................... 4- 3
4.3 Installation environment ........................................................................................................................... 4- 5
4.4 Names of each part, and settings............................................................................................................ 4- 6
4.5 Wiring........................................................................................................................................................ 4- 8