Mitsubishi Electric QJ71MB91 User Manual page 11

5.2 Master Function ............................................................................................................................... 5 - 3
5.2.1 Automatic communication function........................................................................................... 5 - 3
5.2.2 Communication by dedicated instructions .............................................................................. 5 - 16
5.3 Slave Function ............................................................................................................................... 5 - 17
5.3.1 Automatic response function .................................................................................................. 5 - 17
5.3.2 MODBUS device assignment function ................................................................................... 5 - 18
5.3.3 Link operation function ........................................................................................................... 5 - 21
CHAPTER6 PRE-OPERATIONAL PROCEDURES AND SETTINGS
6.1 Handling Precautions....................................................................................................................... 6 - 1
6.2 Pre-Operational Procedures and Settings ....................................................................................... 6 - 2
6.3 Part Names...................................................................................................................................... 6 - 4
6.4 Unit Tests......................................................................................................................................... 6 - 6
6.4.1 Hardware test ........................................................................................................................... 6 - 6
6.4.2 Self-loopback test ..................................................................................................................... 6 - 8
6.5 Connection to a Target Device ...................................................................................................... 6 - 11
6.5.1 How to connect the RS-232 interface..................................................................................... 6 - 12
6.5.2 How to connect the RS-422/485 interface.............................................................................. 6 - 14
6.6 Intelligent Function Module Switch Setting .................................................................................... 6 - 19
6.7 Maintenance, Inspection................................................................................................................ 6 - 24
6.7.1 Maintenance, inspection......................................................................................................... 6 - 24
6.7.2 When removing or installing the module ................................................................................ 6 - 24
CHAPTER7 PARAMETER SETTING
7.1 Parameter Settings and Setting Procedure ..................................................................................... 7 - 1
7.2 Automatic Communication Parameter ............................................................................................. 7 - 4
7.2.1 Automatic communication parameter details........................................................................... 7 - 4
7.3 MODBUS Device Assignment Parameter ..................................................................................... 7 - 11
7.3.1 MODBUS device assignment to the programmable controller CPU device memory ............. 7 - 13
7.3.2 MODBUS extended file register assignment to the programmable controller
CPU file register ..................................................................................................................... 7 - 23
7.3.3 QJ71MB91 buffer memory assignment .................................................................................. 7 - 24
7.3.4 Specifying the error status read device .................................................................................. 7 - 26
7.3.5 Specifying access target when mounted to MELSECNET/H remote I/O station .................... 7 - 29
7.3.6 Specifying the CPU response monitoring timer ...................................................................... 7 - 30
CHAPTER8 UTILITY PACKAGE (GX Configurator-MB)
8.1 Functions of the Utility Package ...................................................................................................... 8 - 1
8.2 Installing and Uninstalling the Utility Package ................................................................................. 8 - 2
8.2.1 Handling precautions................................................................................................................ 8 - 2
8.2.2 Operating environment ............................................................................................................. 8 - 5
8.3 Utility Package Operation ................................................................................................................ 8 - 7
8.3.1 Common utility package operations ......................................................................................... 8 - 7
8.3.2 Operation overview................................................................................................................. 8 - 10
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