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Growatt Inverter MODBUS registers: read online

Connect Growatt to the computer through a USB-to-serial or RS485 adapter and read its registers in your browser: click "Read register values online" under the model (Chrome or Edge, nothing to install). The tables below list the MODBUS offset, unit, data type and scale of every register shown. For logging 24/7 into a database, CSV files or Excel, use the Advanced Serial Data Logger (for MODBUS RTU) or Advanced TCP/IP Data Logger (for MODBUS TCP): they poll the complete map of every model on this page and provide continuous Growatt logger and poll.

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Growatt (Inverter) - MODBUS Registers

Registers in the map: 127 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 4 (input registers). byte order big-endian. data types: dword, word.

MODBUS offsetDescriptionUnitsData typeScale
0Inverter run state word 
1Input powerWdword×0.1
3PVI voltageVword×0.1
4PVI input currentAword×0.1
5PVI input powerWdword×0.1
7PV2 voltageVword×0.1
8PV2 input currentAword×0.1
9PV2 input powerWdword×0.1
11PV3 voltageVword×0.1
12PV3 input currentAword×0.1
13PV3 input powerWdword×0.1
15PV4 voltageVword×0.1
16PV4 input currentAword×0.1
17PV4 input powerWdword×0.1
19PVS voltageVword×0.1
20PVS input currentAword×0.1
21PVS input powerWdword×0.1
23PV6 voltageVword×0.1
24PV6 input currentAword×0.1
25PV6 input powerWdword×0.1
27PV7 voltageVword×0.1
28PV7 input currentAword×0.1
29PV7 input powerWdword×0.1
31PV8 voltageVword×0.1
32PV8 input currentAword×0.1
33PV8 input powerWdword×0.1
35Output powerWdword×0.1
37Grid frequencyHzword×0.01
38Three/single phase grid voltageVword×0.1
39Three/single phase output current gridAword×0.1
40Three/single phase output watt VA gridVAdword×0.1
42Three phase voltage gridVword×0.1
43Three phase output current gridAword×0.1
44Three phase output power gridVAdword×0.1
46Three phase voltage gridVword×0.1
47Three phase output current gridAword×0.1
48Three phase output power gridVAdword×0.1
50Three phase voltage gridVword×0.1
51Three phase voltage gridVword×0.1
52Three phase voltage gridVword×0.1
53Today generate energy dword 
55Total generate energy dword 
57Work time totalsdword×0.5
59PVIEnergy todaykWhdword×0.1
61PVIEnergy totalkWhdword×0.1
63PVZEnergy todaykWhdword×0.1
65PVZEnergy totalkWhdword×0.1
67PV3 energy todaykWhdword×0.1
69PV3 energy totalkWhdword×0.1
71PVAEnergy todaykWhdword×0.1

This is not the complete map: 50 of 127 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Related MODBUS registers maps

Note: Products and companies mentioned here are used only for definition and identification purposes and can be trademarks and/or registered trademarks of the respective companies.

MODBUS COM Port Connection