Table of Contents
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Table of Contents
Preface.............................................................................................................................iii
Coupler Manual Guide.................................................................................................... iv
Coupler Manual Symbols.................................................................................................v
Safety Considerations..................................................................................................... vi
Caution during Use .........................................................................................................vii
Table of Contents...........................................................................................................viii
1Reference manuals ...................................................................................10
1.1 Instruction manual .............................................................................................10
1.2 Coupler manual .................................................................................................10
1.3 Module manual..................................................................................................10
1.4 DAQMaster user manual...................................................................................10
2Protocol overview .....................................................................................11
2.1 Modbus RTU......................................................................................................11
2.2 Basic memory map of field network ..................................................................11
2.2.1 Data Register Summary.............................................................................11
2.2.2 Data Register .............................................................................................11
2.2.3 Input Register.............................................................................................12
2.2.4 Holding Register.........................................................................................13
3Specifications............................................................................................14
4Hardware....................................................................................................16
4.1 Dimensions........................................................................................................16
4.2 Unit descriptions................................................................................................17
4.3 Rotary switch for communication setting...........................................................18
4.3.1 Transfer rate...............................................................................................18
4.3.2 Switch for station no...................................................................................18
4.4 Status indicator..................................................................................................19
5Memory map..............................................................................................21
5.1 Memory system .................................................................................................21
5.1.1 Data handling .............................................................................................21
5.1.2 Data type....................................................................................................21
5.2 Memory structure...............................................................................................22
5.3 Memory area......................................................................................................23
5.4 Gather diagnostic information of modules.........................................................23
5.5 Process image...................................................................................................24
5.6 Example of memory map...................................................................................24
5.6.1 Device.........................................................................................................24
5.6.2 Input process image...................................................................................24
5.6.3 Output process image................................................................................25