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Thank you for purchasing the 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.
Please forward a copy of this manual to the end user.
SAFETY PRECAUTIONS ............................................................................................................................ A- 1
CONDITIONS OF USE FOR THE PRODUCT ........................................................................................... A- 5
REVISIONS .................................................................................................................................................. A- 6
CONTENTS .................................................................................................................................................. A- 10
ABOUT MANUALS ...................................................................................................................................... A- 16
COMPLIANCE WITH THE EMC AND LOW VOLTAGE DIRECTIVES ..................................................... A- 16
THE MANUAL'S USE AND STRUCTURE ................................................................................................. A- 17
ABOUT THE GENERIC TERMS AND ABBREVIATIONS ......................................................................... A- 20
DEFINITIONS AND DESCRIPTIONS OF TERMINOLOGY ...................................................................... A- 22
DISCONTINUED MODELS ....................................................................................................................... A- 23
PRODUCT CONFIGURATION ................................................................................................................... A- 24
1.1 Overview of the Serial Communication Module ................................................................................. 1- 1
1.2 Features of the Serial Communication Module .................................................................................. 1- 2
1.3 About Added/Changed Functions in Function Version B .................................................................. 1- 13
2.1 Applicable Systems ............................................................................................................................. 2- 1
2.2 Combinations of Programmable Controller CPU and External Device, and Available Functions .... 2- 4
2.3 For Use in Multiple CPU System ........................................................................................................ 2- 8
2.4 Use with Basic Model QCPU .............................................................................................................. 2- 9
2.5 Use with Redundant CPUs ................................................................................................................. 2- 10
2.6 Use on MELSECNET/H Remote I/O Stations .................................................................................... 2- 12
2.7 Checking the Function Version, Serial No., and Software Version ................................................... 2- 16
3.1 Performance Specifications ................................................................................................................ 3- 1
3.2 RS-232 Interface Specification ........................................................................................................... 3- 3
3.2.1 RS-232 connector specifications ................................................................................................. 3- 3
3.2.2 RS-232 cable specification ........................................................................................................... 3- 6
3.3 RS-422/485 Interface Specifications .................................................................................................. 3- 7
3.3.1 RS-422/485 terminal block specifications .................................................................................... 3- 7
3.3.2 RS-422/485 cable specifications .................................................................................................. 3- 8
3.3.3 Precautions when transferring data using RS-422/485 circuit .................................................... 3- 9
3.3.4 Enabling or disabling echo back of the RS-422/485 interface .................................................... 3- 12
3.4 Serial Communication Module Function List ...................................................................................... 3- 14
3.5 Dedicated Instruction List .................................................................................................................... 3- 16
3.6 Utility Package (GX Configurator-SC) Function List .......................................................................... 3- 17
3.7 List of GX Developer Setting Items for Serial Communication Modules ........................................... 3- 19
3.8 List of Input/Output Signals for the Programmable Controller CPU .................................................. 3- 20
3.9 List of Applications and Assignments of the Buffer Memory ............................................................. 3- 23
A - 10
INTRODUCTION
CONTENTS
1- 1 to 1-15
2- 1 to 2-20
3- 1 to 3-42
A - 10
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