Mitsubishi Electric 800 Series Instruction Manual page 5

4.3.3 Operation selection at a communication error (Pr.502, Pr.779).......................................................................................... 29
4.4 Communication specifications of the Mitsubishi inverter protocol (computer link communication)...................32
4.4.1 Communication specifications ............................................................................................................................................ 34
4.4.2 Communication procedure .................................................................................................................................................. 35
4.4.3 Communication operation presence/absence and data format types ................................................................................. 36
4.4.4 Data definitions ................................................................................................................................................................... 40
4.4.5 Response time .................................................................................................................................................................... 43
4.4.6 Retry count setting (Pr.335) ................................................................................................................................................ 44
4.4.7 Signal loss detection (Pr.336 RS-485 communication check time interval) ........................................................................ 45
4.4.8 Instructions for the program ................................................................................................................................................ 46
4.4.9 Setting items and set data .................................................................................................................................................. 47
4.4.10 List of calibration parameters .............................................................................................................................................. 54
4.4.11 Operation command ........................................................................................................................................................... 55
4.4.12 Inverter status monitor ........................................................................................................................................................ 56
4.4.13 Multi command (HF0) ......................................................................................................................................................... 57
4.5 MODBUS RTU communication specification..............................................................................................................59
4.5.1 Communication specifications ............................................................................................................................................ 61
4.5.2 Outline................................................................................................................................................................................. 62
4.5.3 Message format .................................................................................................................................................................. 62
4.5.4 Message frame (protocol) ................................................................................................................................................... 64
4.5.5 Function code list ................................................................................................................................................................ 66
4.5.6 Read Holding Register (reading of data of holding registers) (H03 or 03) .......................................................................... 67
4.5.7 Preset Single Register (writing of data to holding registers) (H06 or 06) ............................................................................ 70
4.5.8 Diagnostics (diagnosis of functions) (H08 or 08) ................................................................................................................ 71
4.5.9 Preset Multiple Registers (writing of data to multiple holding registers) (H10 or 16) .......................................................... 72
4.5.10 Read Holding Register access Log (H46 or 70).................................................................................................................. 74
4.5.11 Error response .................................................................................................................................................................... 75
4.5.12 MODBUS register ............................................................................................................................................................... 78
4.5.13 Pr.343 Communication error count ..................................................................................................................................... 85
4.5.14 Output signal LF "alarm output (communication error warning)" ........................................................................................ 85
4.5.15 Signal loss detection (Pr.539 MODBUS RTU communication check time interval) ............................................................ 86
4.6 Automatic connection with GOT ..................................................................................................................................88
4.6.1 Automatic connection system configuration........................................................................................................................ 88
4.6.2 GOT2000 series automatic recognition .............................................................................................................................. 89
4.7 Parameter reading/writing restriction when the password function is active .........................................................90
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