[Call for Help/Testing] H3 gen1 and AIO register testing

[MartB]

In order to get some old issues fixed and some new features added, it would be great if you guys could help figure out which registers are available on which H3 versions, this includes the AIO and Kuara H3 etc.

In order for this to work i made the following template. Filling this out is highly appreciated, but you can also use a shorter way of conveying the results.

Confirmed working so far

If your inverter and version combination is on this list, you dont need to re-test! Thanks for clicking on this discussion though 👯

• H3-* with manager versions >= 1.84

---

1. System Information

Please provide the following details about your system:

• Inverter Model: H3-12.0-E

• Manager Firmware Version: 1.91

• Content of Modbus Protocol version 30028: 115

2. Register Test Results

Please fill out the table below.

• Mark Success if the read was successful and the data looks reasonable.

• Mark Error if the service call failed or threw an error in the logs.

• Mark Invalid Data if the read succeeded but the data is clearly wrong for single register reads (e.g., 65535 when that's not expected).

Register	read_count	Description	Result (Success / Error / Invalid Data)	Log Output / Value
30028	1	Modbus protocol version	✔️
31141	1	System Battery SoC (0-100%)	✔️
44011	1	Battery Discharge Limit (W)	✔️
44012	1	Battery Charge Limit (W)	✔️
31055	2	Inverter Apparent Power	✔️
31126	2	Total Load Power	✔️
31137	2	Total EPS Power	✔️
31016	3	All EPS Voltages	✔️
31019	3	All EPS Currents	✔️
31067	6	Grid CT (3x i32)	✔️

How to Test

If you're unsure how to get these values, please follow these steps:

1. Go to Developer Tools > Actions in Home Assistant.

2. In the "Actions" dropdown, find and select foxess_modbus.read_registers.

3. Select your inverter from the dropdown.

4. Put in the register and count from the table above to test.

<!--
Thank you for participating! Please fill out the template below with your findings.
This helps us massively in verifying register compatibility.
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### 1. System Information

* **Inverter Model:**

* **Manager Firmware Version:** 

* **Content of Modbus Protocol version `30028`:**

### 2. Register Test Results

<!--
You dont have to put all data here, its already a great contribution if you just put a :heavy_check_mark: in the success field
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| **Register** | **read_count** | **Description** | **Result (Success / Error / Invalid Data)** | **Log Output / Value** |
| :--- | :---: | :--- | :--- | :--- |
| `30028` | 1 | Modbus protocol version | | |
| `31141` | 1 | System Battery SoC (0-100%) | | |
| `44011` | 1 | Battery Discharge Limit (W) | | |
| `44012` | 1 | Battery Charge Limit (W) | | |
| `31126` | 2 | Total Load Power | | |
| `31055` | 2 | Inverter Apparent Power | | |
| `31137` | 2 | Total EPS Power | | |
| `31016` | 3 | All EPS Voltages | | |
| `31019` | 3 | All EPS Currents | | |
| `31067` | 6 | Grid CT (3x i32) | | |

[xrad]

1. System Information

• Inverter Model: H3-10.0-E

• Manager Firmware Version: 1.84

• Content of Modbus Protocol version 30028: 115

2. Register Test Results

Register	read_count	Description	Result (Success / Error / Invalid Data)	Log Output / Value
30028	1	Modbus protocol version	✔️	115
31141	1	System Battery SoC (0-100%)	✔️	100
44011	1	Battery Discharge Limit (W)	✔️	7681
44012	1	Battery Charge Limit (W)	✔️	0
31126	2	Total Load Power	✔️	0, 305
31055	2	Inverter Apparent Power	✔️	0, 372
31137	2	Total EPS Power	✔️	0, 0
31016	3	All EPS Voltages	✔️	0,0,0
31019	3	All EPS Currents	✔️	0,0,0
31067	6	Grid CT (3x i32)	✔️	65535, 65430, 0, 82, 0, 70

[MartB]

Thank you! Perfect that narrows the search space a bit!

I'm guessing 115 got introduced with 1.80. Hopefully we get some older versions tested too and it might even work for older inverters

[Hoschi65]

1. System Information

• Inverter Model: H3-12.0-E

• Manager Firmware Version: 1.91

• Content of Modbus Protocol version 30028: 115

2. Register Test Results

Register	read_count	Description	Result (Success / Error / Invalid Data)	Log Output / Value
30028	1	Modbus protocol version		115
31141	1	System Battery SoC (0-100%)		4 (SoC is actually 14)
44011	1	Battery Discharge Limit (W)		10036
44012	1	Battery Charge Limit (W)		10036
31126	2	Total Load Power		65536,64884
31055	2	Inverter Apparent Power		0,3040
31137	2	Total EPS Power		0,251
31016	3	All EPS Voltages		2309,2317,2312
31019	3	All EPS Currents		4,3,6
31067	6	Grid CT (3x i32)		65536,64827,0,1097,65536,64594

[xrad]

Did you also properly set the read count? For queries with a read counts > 1 you should see a corresponding number of output values.

[Hoschi65]

now I did :-)

[NintendoTito]

Inverter Model: H3-12.0-E

Manager Firmware Version: 1.91

Content of Modbus Protocol version 30028: 115

30028 | 1 | Modbus protocol version | ✔️ | 115
31141 | 1 | System Battery SoC (0-100%) | ✔️ | 2
44011 | 1 | Battery Discharge Limit (W) | ✔️ | 0
44012 | 1 | Battery Charge Limit (W) | ✔️ | 56889
31126 | 2 | Total Load Power | ✔️ | 0, 550
31055 | 2 | Inverter Apparent Power | ✔️ | 0, 734
31137 | 2 | Total EPS Power | ✔️ | 0, 92
31016 | 3 | All EPS Voltages | ✔️ | 2349,2338,2360
31019 | 3 | All EPS Currents | ✔️ | 3,2,3
31067 | 6 | Grid CT (3x i32) | ✔️ | 65535, 65392,65535,65531,0,108

[HerrKlaus]

Data from modbus Adapter within ioBroker:

Inverter Model: H3-12.0-E
Manager Firmware Version: 1.84
Content of Modbus Protocol version: 115

30028 | 1 | Modbus protocol version | ✔️ | 115
31141 | 1 | System Battery SoC (0-100%) | ✔️ | 82% (Remark: 31038 Battery SoC is 84%)
44011 | 1 | Battery Discharge Limit (W) | ✔️ | 0W
44012 | 1 | Battery Charge Limit (W) | ✔️ | 7747W
31126 | 2 | Total Load Power | ✔️ | 386W (signed32bit, length2)
31055 | 2 | Inverter Apparent Power | ✔️ | 738VA (signed32bit, length2)
31137 | 2 | Total EPS Power | ✔️ | 54W (signed32bit, length2) -> matches H3-12 display values
31016 | 3 | All EPS Voltages | ✔️ | 232,7V / 232,4V / 232,4V (signed16bit, Factor 0.1, 31016 and 31017 and 31018) -> matches H3-12 display values
31019 | 3 | All EPS Currents | ✔️ | 0.4A / 0.2A / 0.3A (signed16bit, Factor 0.1, 31019 and 31020 and 31021) -> matches H3-12 display values
31067 | 6 | Grid CT (3x i32) | ✔️ | -168W, 42W, 140W (signed32bit, length2 -> 31067 and 31069 and 31071) -> matches H3-12 display values

[chrta]

1. System Information

• Inverter Model: H3-10.0-E

• Manager Firmware Version: 1.87

• Content of Modbus Protocol version 30028: 115

2. Register Test Results

Register	read_count	Description	Result (Success / Error / Invalid Data)	Log Output / Value
30028	1	Modbus protocol version	✔️	115
31141	1	System Battery SoC (0-100%)	✔️	47 (actually 53%)
44011	1	Battery Discharge Limit (W)	✔️	4552
44012	1	Battery Charge Limit (W)	✔️	60984
31126	2	Total Load Power	✔️	0, 421
31055	2	Inverter Apparent Power	✔️	0, 743
31137	2	Total EPS Power	✔️	0, 141
31016	3	All EPS Voltages	✔️	2317, 2323, 2309
31019	3	All EPS Currents	✔️	2, 4, 3
31067	6	Grid CT (3x i32)	✔️	0, 106, 65535, 65488, 65535, 65490

• Battery Charge and Discharge limits are set to 26.0A (ECS4100-H3), current Voltage about 175V

[Szpero]

1. System Information

• Inverter Model: FoxESS H3-10.0-E

• Manager Firmware Version: 1.91

• Content of Modbus Protocol version 30028: 115

2. Register Test Results

Register	read_count	Description	Result (Success / Error / Invalid Data)	Log Output / Value
30028	1	Modbus protocol version		115
31141	1	System Battery SoC (0-100%)		21 (35% in app)
44011	1	Battery Discharge Limit (W)		10000
44012	1	Battery Charge Limit (W)		60527
31126	2	Total Load Power		0,2588
31055	2	Inverter Apparent Power		0,2570
31137	2	Total EPS Power		0,116
31016	3	All EPS Voltages		2265,2304,2271
31019	3	All EPS Currents		2,2,4
31067	6	Grid CT (3x i32)		0,23,65535,65382,0,96

From my perspective:
31067+ It's related to power grid and direction or just a power meter readings (separate device).
31126+ can be extended to 31133. They looks like load in total and separate RST lines.
31029,31030,31031 those looks like internal transformer power consumption. They are only significant when any power conversion occuring.

If its helps I can give several dumps from registers 31000 to 31152 during various scenarios.