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INTRODUCTION
Thank you for purchasing the MELSEC-Q series PLC.
Before using the equipment. please read this manual carefully to develop full familiarity with the functions
and performance of the Q series PLC you have purchased, so as to ensure correct use.
CONTENTS
SAFETY PRECAUTIONS..............................................................................................................................A- 1
REVISIONS....................................................................................................................................................A- 4
INTRODUCTION............................................................................................................................................A- 5
CONTENTS....................................................................................................................................................A- 5
Conformation to the EMC Directive and Low Voltage Instruction ................................................................A- 8
About the Generic Terms and Abbreviations ................................................................................................A- 8
Product Configuration ....................................................................................................................................A- 9
1 OVERVIEW 1- 1 to 1- 2
1.1 Features ...................................................................................................................................................1- 1
2 SYSTEM CONFIGURATION 2- 1 to 2- 6
2.1 Overall Configuration ............................................................................................................................... 2- 1
2.2 Applicable Systems.................................................................................................................................. 2- 3
2.3 How to Check the Function Version, Serial No. and Software Version .................................................2- 4
2.4 About Use of the QJ71DN91 with the Q00J/Q00/Q01CPU ................................................................... 2- 5
2.5 About Additional Function........................................................................................................................ 2- 6
2.6 Compatible DeviceNet Products from Other Manufacturers ..................................................................2- 6
3 SPECIFICATIONS 3- 1 to 3- 51
3.1 Performance Specifications..................................................................................................................... 3- 1
3.1.1 Maximum transmitting distance when thick and thin cables coexist ...............................................3- 1
3.2 Functions.................................................................................................................................................. 3- 2
3.2.1 Master function (I/O communication function)..................................................................................3- 2
3.2.2 Master function (Message communication function) .......................................................................3- 8
3.2.3 Slave function (I/O communication function).................................................................................... 3-11
3.3 I/O Signals for the PLC CPU ................................................................................................................... 3-13
3.3.1 I/O signal list ......................................................................................................................................3-13
3.3.2 Details of the I/O signals ................................................................................................................... 3-14
3.4 Buffer Memory.......................................................................................................................................... 3-24
3.4.1 Buffer memory list .............................................................................................................................3-24
3.4.2 Buffer memory details ....................................................................................................................... 3-26
3.5 Communication Performance..................................................................................................................3-50
3.5.1 Scan time........................................................................................................................................... 3-50
3.5.2 Communication cycle........................................................................................................................ 3-51
3.5.3 Transmission delays .........................................................................................................................3-51