[Bug]: Wrong Values multiplier - Growatt MIC 600TL-X

[Saentist]

Describe the bug

Some of values have wrong interpretation

Grid Current: 0.8A >> 0.08A
Grid Power: 93W >> 9.3W
Grid Power VA: 118 VA >> 11.8 VA

Multiplied by 0.1 need to be 0.01

Integration Version

2024.02.1

Homeassistant core version

2024.01.1

Inverter brand

Growatt MIC 600TL-X

Plugin used

plugin_growatt.py

Serial prefix

GH1.0ZAAa

Connection Method

Elfin EW11

Detailed Error Log

No response

Additional context

Device Serial Number：FRJxxxxxxx
Version: GHAA1050
Communication Version Number: ZAAa-0094
Build Number: GH1.0
Device Model: MIC 600TL-X
mppt: 1

[wills106]

Your Inverter internally to the Integration has been allocated the tag of 'Gen4' to differentiate it from the other Growatt Inverters. As there are 4 main sets of register addresses to use.

https://github.com/wills106/homeassistant-solax-modbus/blob/737fee1d7d7b11193c9021daa6b14230d3a7ba76/custom_components/solax_modbus/plugin_growatt.py#L4694

Grid Current at the moment has scale of 0.1, but should be 0.01 Grid Power at the moment has no scaling, but should be 0.1 Grid Power VA at the moment has no scaling, but should be 0.1

Is that correct to match

Grid Current: 0.8A >> 0.08A
Grid Power: 93W >> 9.3W
Grid Power VA: 118 VA >> 11.8 VA

As moving everything to 0.01 wouldn't work for the two Power entities.

[Saentist]

Inverter product line is MIC 600~3300TL-X https://growatt.tech/wp-content/uploads/2023/02/Datasheet-Growatt-MIC-6003300TL-X-1-1.pdf

in comment is mentioned other product line MIN 2500~6000TL-X https://growatt.tech/wp-content/uploads/2023/02/MIN_2500-6000TL-X_Datasheet.pdf

MIC and MIN are different products. Maby from there is confusion? Guess some modbus register can extend detection of inverter, and correct values reading profile.

[wills106]

Your Inverter is using the same register set as the MIN range. I'll wait and see if another MIC user is having the same scaling issue or not.

[Saentist]

Hope someone other wit MIC inverter post.

until then I see this when read registers

[wills106]

I'm not sure what Register set you are using. I am only aware of the Growatt SPF returning values on input register 36.

Power VA for example is using:

https://github.com/wills106/homeassistant-solax-modbus/blob/9fbab81a5628c0d4bf710152fb5bd59ed225d15f/custom_components/solax_modbus/plugin_growatt.py#L3435-L3445

Do you have any links to Modbus documentation specific to the MIC TL-X?

[Saentist]

Standard RTU documentation revision 1.24 correction 3.14 should cover it Inverter is not RTU2

Actually there is a API documentation with cover some specific inverter TYPE parameters but is more reverse engineering if converted to ModBus request https://www.showdoc.com.cn/262556420217021/6118559963559236

[wills106]

I only have v1.20 of the modbus docs.

Serve api docs probably won't match up to the modbus registers.

[Saentist]

RTU Growatt-PV-Inverter-Modbus-RS485-RTU-Protocol-V3-14.pdf

RTU 2 Growatt-Inverter-Modbus-RTU-Protocol_II-V1_24-English.pdf

Its very strange to call protocol by some document revision instead as real names RTU and RTU2

TL-X/TL-XH/TL-XH US（MIN Type)：
03 register range：0~124,3000~3124， 3125~3249(TL-XHUS)； 
04 register range ： 3000~3124,3125~3249 3250~3374（TL-XH）

TL3-X(MAX、MID、MAC Type)：
03 register range：0~124,125~249； 04 register range：0~124,125~249

MAX 1500V、MAX-X LV: 
03 register range：0~124,125~249；04 register range：0~124,125~249,875~999

MOD TL3-XH:  
register range：0~124,3000~3124；04 register range： 3000~3124,3125~3249

Storage(MIX Type)：
03 register range：0~124,1000~1124；04 register range：0~124,1000~1124

Storage(SPA Type)：
03 register range：0~124,1000~1124；04 register range：1000~1124,2000~2124，1125~1249

Storage(SPH Type)：
03 register range：0~124,1000~1124；04 register range：0~124,1000~1124，1125~1249

Documentation is not complete there is no UA series for example

[wills106]

Just had a look at the 1.24 and my 1.20 docs and I have missed out the scaling of 0.1 for Grid Power & Grid Power VA on the following Inverters TL-X/TL-XH/TL-XH US

I'll release an update for them two and a couple more corrections.

[wills106]

Just released 2024.02.3b3 with a couple more entities for Single Phase Inverters.

[Saentist]

Just released 2024.02.3b3 with a couple more entities for Single Phase Inverters.

Any plan when it will be in main release?

[wills106]

Just released it 2024.02.3

[Saentist]

Grid Current still have wrong multiplier

[wills106]

Is this still an issue? Or has it been corrected?

[Saentist]

Will post ASAP values when there is sun on panels. /16:00~20:00h/

[Saentist]

@wills106 not fixed yet

V A=W (Grid) 2340.3 = 72≠12.5 (as value show)