Thank you for purchasing the Mitsubishi Electric general-purpose programmable controller MELSEC-A Series.
Always read through this manual, and fully comprehend the functions and performance of the A Series PLC
before starting use to ensure correct usage of this product.
When applying the program examples introduced in this manual to an actual system, ensure the applicability
and confirm that it will not cause system control problems.
SAFETY PRECAUTIONS ............................................................................................................................ A- 1
REVISIONS .................................................................................................................................................. A- 6
INTRODUCTION .......................................................................................................................................... A- 8
CONTENTS .................................................................................................................................................. A- 8
ABOUT MANUALS ....................................................................................................................................... A- 15
USING THIS MANUAL (1) ............................................................................................................................ A- 17
USING THIS MANUAL (2) ............................................................................................................................ A- 18
USING THIS MANUAL (3) ............................................................................................................................ A- 19
ENCLOSED PARTS ..................................................................................................................................... A- 21
SECTION 1
1.1 Positioning control .................................................................................................................................. 1- 2
1.1.1 Features of D75P2 .......................................................................................................................... 1- 2
1.2 Flow of system operation ........................................................................................................................ 1- 12
1.2.1 Flow of all processes ........................................................................................................................ 1- 12
1.2.2 Outline of starting ............................................................................................................................. 1- 14
1.2.3 Outline of stopping ........................................................................................................................... 1- 16
1.2.4 Outline for restarting ......................................................................................................................... 1- 17
1.3 Outline of communication ....................................................................................................................... 1- 18
1.3.1 Cyclic transmission........................................................................................................................... 1- 19
1.3.2 Transient transmission ..................................................................................................................... 1- 20
2.1 General image of system ....................................................................................................................... 2- 2
2.3 Applicable system .................................................................................................................................. 2- 6
2.4 Precautions for use ................................................................................................................................ 2- 8
INTRODUCTION
CONTENTS
A - 8
1- 1 to 1- 20
2- 1 to 2- 12