Table of Contents
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Thank you for purchasing the Mitsubishi Electric MELSEC-Q series programmable controller.
Before using the equipment, please read this manual carefully to develop full familiarity with the functions
and performance of the Q series programmable controller you have purchased, so as to ensure correct use.
SAFETY PRECAUTIONS ............................................................................................................................... A- 1
CONDITIONS OF USE FOR THE PRODUCT .............................................................................................. A- 5
REVISIONS ..................................................................................................................................................... A- 6
INTRODUCTION ............................................................................................................................................. A- 8
CONTENTS ..................................................................................................................................................... A- 8
COMPLIANCE WITH THE EMC AND LOW VOLTAGE DIRECTIVES ....................................................... A-12
THE MANUAL'S USAGE AND STRUCTURE .............................................................................................. A-12
ABOUT THE GENERIC TERMS AND ABBREVIATIONS ........................................................................... A-14
MEANINGS AND DEFINITIONS OF TERMS............................................................................................... A-15
PRODUCT CONFIGURATION ..................................................................................................................... A-15
1.1 Features .................................................................................................................................................... 1- 1
2.1 Applicable Systems ................................................................................................................................... 2- 1
2.2 Devices Necessary for Network Configuration ........................................................................................ 2- 3
2.3 System Configuration and Access Range ............................................................................................... 2- 5
2.4 Precautions for System Configuration ...................................................................................................... 2- 7
2.5 Checking Function Version and Software Version .................................................................................. 2- 8
3.1 Performance Specifications ...................................................................................................................... 3- 2
3.2 I/O Signals for Programmable Controller CPU ........................................................................................ 3- 3
3.2.1 I/O signal list ....................................................................................................................................... 3- 3
3.3 Applications and Assignment of Buffer Memory ...................................................................................... 3- 5
3.3.1 Buffer memory list .............................................................................................................................. 3- 5
4.1 MODBUS Standard Function Support List............................................................................................... 4- 1
4.2 Frame Specifications ................................................................................................................................ 4- 3
4.3 PDU Formats by Functions ...................................................................................................................... 4- 4
4.3.1 Read coils (FC: 01) ............................................................................................................................ 4- 6
4.3.2 Read discrete inputs (FC: 02) ............................................................................................................ 4- 7
4.3.3 Read holding registers (FC: 03) ......................................................................................................... 4- 8
4.3.4 Read input registers (FC: 04) ............................................................................................................ 4- 9
4.3.5 Write single coil (FC: 05) ................................................................................................................... 4-10
4.3.6 Write single register (FC: 06) ............................................................................................................ 4-11
4.3.7 Write multiple coils (FC: 15) .............................................................................................................. 4-12
A - 8
INTRODUCTION
CONTENTS
1- 1 to 1- 5
2- 1 to 2-10
3- 1 to 3-10
4- 1 to 4-20
A - 8
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