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Contents
Safety Precautions ..........................................................................................................2
Product Description .......................................................................................................4
Function Codes for Commands ..............................................................................5
1 Debugging.....................................................................................................................6
1.1 Checking the Communication Between the Gateway and Refrigerant
System ...........................................................................................................................6
1.1.1 Opening Web Debugging Page .............................................................6
1.1.2 Discrete input, Input Register ................................................................7
1.1.3 Determining Whether the Communication Is Normal......................8
1.2 Modbus Interface Debugging...........................................................................8
1.2.1 Configuring Modbus Gateway................................................................9
1.2.2 Modbus/RTU ............................................................................................ 10
1.2.3 Modbus/TCP ............................................................................................ 20
2 Mapping Tables......................................................................................................... 32
Precautions for Integrated Development.......................................................... 32
2.1 Discrete input .................................................................................................... 34
2.1.1 IDU .............................................................................................................. 34
2.1.2 ODU ............................................................................................................ 34
2.2 Input Register..................................................................................................... 35
2.2.1 IDU .............................................................................................................. 35
2.2.2 ODU ............................................................................................................ 40
2.2.3 By IDU/ODU Parameter Type (Continuous Addresses) ................ 43
2.3 Holding Register................................................................................................ 47
2.3.1 All-off Control Register.......................................................................... 47
2.3.2 IDU Control Register-1 .......................................................................... 48
2.3.3 IDU Control Register-2 .......................................................................... 56
3 Web Function............................................................................................................. 61
3.1 System Settings ......................................................................................... 62
3.2 DataView....................................................................................................... 63
3.3 Firmware Upgrade ..................................................................................... 64
Restoring Factory Settings........................................................................................ 65
Installation...................................................................................................................... 66
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