Sofar Solar KTL-X Inverter: RS485 MODBUS Integration with Domoticz - Setup & Tips [90]

I will add to the topic because I recently implemented a similar solution and maybe someone will find it useful. I tried to connect the Solar Sofa 12KTL-X (branded as ZCS Azzurro) to Home Assistant. Firmware v2.90. I tried to query the logger directly (LSE-3, firmware ME_0B_2701_5.06), but it didn't work - I couldn't get tired of it despite dumps of communication with solarmanpv. Finally, I used the USR-TCP232-304 from the Chinese (I had it in the closet for another project), plugged it into one of the free RS485 connectors of the inverter and connected directly via ethernet with HASS via Modbus RTU. There was no need to write any additional software. HASS has a dedicated module for this, so all you had to do was carve YAML with register configuration. If anyone needs more info, please write. I'm not publishing YAML at the moment, because I'm a novice in HASS and I don't know how good-way my solution is. The data compared with solarmanpv are identical.

I also wanted to thank you - the data with registers posted in this thread helped me a lot in configuration, and the soft from https://github.com/MichaluxPL/Sofar_LSW3.git was able to dump and display data via Modbus RTU after a slight modification.

Pros: USR-TCP232-304 - it's relatively cheap (< 30USD) and looking at the amount of work involved in assembling, for example, ESP - it pays off for me. I also wanted cable, not WiFi.
Cons: No authorization in TCP communication. It would be nice to have a separate VLAN for this.

Could someone write what exactly needs to be done to integrate the Sofar KTL-X 8.8 inverter with Home Assistant?

acros82 wrote:

Could someone write what exactly needs to be done to integrate the Sofar KTL-X 8.8 inverter with HomeAssistant?

The question is how do you want to do it? Because there are at least three:
1) downloading data from solarmanpv or other service to which you connected the logger via their API or parsing the page
2) downloading data from the logger directly (LSW/LSE) and here it is different - I couldn't get it to work
3) downloading data directly from the inverter via RS485 (or via ethernet/wifi) and via ModBus

ofi wrote:

acros82 wrote:

Could someone write what exactly needs to be done to integrate the Sofar KTL-X 8.8 inverter with HomeAssistant?

The question is how do you want to do it? Because there are at least three:
1) downloading data from solarmanpv or other service to which you connected the logger via their API or parsing the page
2) downloading data from the logger directly (LSW/LSE) and here it is different - I couldn't get it to work
3) downloading data directly from the inverter via RS485 (or via ethernet/wifi) and via ModBus

Preferably 2, possibly 3, only here I know that you need an RS485 converter

In that case, it's best to start by downloading this software: https://github.com/MichaluxPL/Sofar_LSW3.git and try to run it so that InverterData.py spits out data from the inverter. In short - you need to correct the config for your network, possibly install the missing python modules and start. There is a description in the repo. If you succeed, you will be "almost home".

One more thing - it all depends on what version of the LSW or LSE module you have. This firmware should work with newer ones. You can also google something for older versions.

Dodatek w HA wywala błąd

Every 60.0s: python3 ./Sofar_LSW3/InverterData.py 2022-01-28 22:37:37
Traceback (most recent call last):
File "/data/./Sofar_LSW3/InverterData.py", line 85, in
DomoticzSupport=configParser.get('Domoticz', 'domoticz_support')
File "/usr/lib/python3.9/configparser.py", line 781, in get
d = self._unify_values(section, vars)
File "/usr/lib/python3.9/configparser.py", line 1149, in _unify_values
raise NoSectionError(section) from None
configparser.NoSectionError: No section: 'Domoticz'

Mój moduł to LSW3_15_FFFF_1.0.57

The "[Domoticz]" section is missing from the configuration file. Sure of this:

[Domoticz]
domoticz_support=0 # 0: disabled, 1: enabled

Hello, I am a new owner of Sofar 4.4 ktl-x, I have read the whole topic and I have a request to my colleagues for a short summary and answers to a few questions, because I am a bit confused after reading six subpages of the topic.
Is it possible to collect exactly the same amount of data as via rs485 when collecting data via LSW-3?
So you just have access to exactly the same registers as after rs485?
I mean, of course, access to data through the local address of the data logger, not through some clouds.
I see that buddy starob mastered node-red pretty well (greetings, we've already written to each other a few times). I too am going to use NR for integration. If it is not possible to get to all the data through the LSW-3, I will probably do the same as I did with the integration of the Riden RD6018 power supply, i.e. I deleted the original firmware from the esp8266 dongle and uploaded the esp-link to it. Here it is enough to do the same, i.e. convert rs485 to USART lvTTL and send it via wifi, doing as if converting modbus rtu to modbus tcp.
Regards, Xury

Added after 7 [hours] 52 [minutes]:

All right. I was writing at night and couldn't test then. I couldn't wait for the morning. Colleague flow starob is all I need.

You can read some information from the logger normally by IP, but I have not found anywhere documentation that would 100% correspond to the data returned by the logger.
While the information about power, currents and voltages overlap, e.g. the reading of reactive power is terribly strange.
I made a simple self-monitoring on node-red that collects data every 30 seconds and visualizes them.

Krawietz

Regards @xury...yes. yes it's because of you
There is already a corrected version for checking the correctness of the data. For unknown reasons, lsw periodically returns data from d..y despite correct CRC. This reading is practically modbus, only encapsulated with additional data overhead. Test what is for now, in my free time I will give you a newer version ... maybe you can improve something more ... chief

I haven't been here for a while
On the subject of Domoticz support, I have uploaded the latest version (1.66) to GIT.
Support for MQTT/Domoticz has been improved (proposed fixes a few posts above are not entirely in line with the art ).
Currently, the solution works as it should and there is no problem with publishing all messages to MQTT.

Hello,
Someone may have tested it on the Sofar Solar 8.8KTL-X G3 LSW-3. I'm going to buy it and I'm looking for information if the modbus has remained the same as in G2.

Hi,
I'll throw in my 2 cents as well. I made a home boiler controller, which, based on the data taken from the inverter temperature probe, turns the heaters on and off, just like a colleague a little above. I came across the thread a lot after making the board and writing the software, but the list of registers was very helpful.

I collect data through the MAX485 module for esp32, which manages the heaters plus spits data to HTTP endpoints. There, the data is aggregated by Prometheus and then read by Grafana.

If anyone would like to see the code, please visit my GitHub (nixenos/solar-heater-controller). Unfortunately I can't share links yet, I've never posted on an electrode.

Perhaps someone will find my writings useful and find something interesting there

I have a question about inverter temperature.
Right now my sofar 4.4 ktl-x is running at full power. I have 12 405W panels.
I didn't expect it to produce so well.
There is nothing in the documentation about temperatures. The inverter is mounted inside the house and I am concerned about its temperatures. I currently have Inner 52 degrees, module 45 degrees. Is it too much or can it be?

I uploaded another version of the monitoring solution (1.8) to my GIT - this time support for HomeAssistant was added (the code was provided by pablolite, I just optimized ) and generally reworked support for MQTT.
If anyone wants to test it, it's here: https://github.com/MichaluxPL/Sofar_LSW3

@xury it's ok for now. at 70 degrees will start to reduce power.

I confirm working on Sofar Solar 8.8KTL-X G3. In this version, the LSW-3 is via USB. In the attachment, I attach the Modbus documentation for the G3 series, it may be useful to someone.

Rectification:
If anyone wants to use the @Michalux script with G3 version inverters, please adapt the configuration file with the documentation in the attachment.

Test done:
- LSW3_15_270A_1.32
inverter
Software version:
- MasterSoft: V000006
- Vice Soft version: V000003
- Hardware: V203
- Standard 0507
- Communication processor software version: V00005

Important code changes include

on


Customized for your own needs link

Hello, I tested the solution from @Michalux - MQTT influxdb HA (version 1.8.3) and the KTL-X 11 LSW3 inverter - everything works fine, crontab, reads everything every 1 minute.
@Michalux sorry for poisoning but can you tell me what are string 1-8 voltage and string 1-8 current? Because in my case these data are from the cap - String voltage 8 = PV1 voltage, I don't know where they come from - 1-2 is over 20 A, then nothing until 7-8 - here 62 A and 50 A respectively ( -); then PV1 current tested by the CPU - over 500A - I understand that you can remove what is unnecessary by editing XML?

And this question is not for me, but for the manufacturer, i.e. Sofar
I only download what is issued by MODBUS on individual registers.

Hello and welcome.

I'm new to the forum and wanted to say hello
Good morning.

Taking this opportunity, could I ask for more or less guidance on how to run this integration for Sofar on HA? It's the one from @Michalux
I have a Home Assistant installation downloaded from the official website for rpi4, plus working mqtt and I don't know what to do next.
I had several integrations for Sofar on HA, but none work properly and I wanted to test another one.
I read the thread, maybe you need to install something to HA?
I understand that on HA you need to add config.cfg somewhere and here is the problem because I do not know where and how to run it ...
Can I count on your help and understanding?

Regards

Have you read Readme.md on github? Everything is described there and how.
Install python modules
You need to determine the IP of your LSW3 and enter it in config.cfg
Unlock MQTT and HA by typing 1 instead of 0
Set MQTT in configuration.yaml
Autodiscovery should show the entities by themselves if everything is configured correctly.

xury wrote:

Have you read Readme.md on github? Everything is described there and how.

Yes of course.
I have all ip,sn and mqtt data.

However, I do not know how to install the necessary components mentioned in the readme.
I know it's easy for some, but unfortunately I don't know how to do it, that's why I asked for help....

What type of HA installation do you have?
Native, or HA in Docker or HA in Proxmox VM?
If you have ssh access then simply:
pip -m install libscrc paho-mqtt influxdb

xury wrote:

What type of HA installation do you have?
Native, or HA in Docker or HA in Proxmox VM?

Quote:

core-2022.3.3 version
Home Assistant OS installation type

This is probably the native version.
I downloaded the iso file from the HA website, uploaded it to the memory card and it works.

I have access to HA via ssh, but after entering pip -m install libscrc paho-mqtt influxdb I get information that it does not recognize the pip command. It is most likely not installed.
How to install pip?

On the native Home Assistant OS, unfortunately, I do not know. You have to search online.

kumaPL wrote:

xury wrote:

What type of HA installation do you have?
Native, or HA in Docker or HA in Proxmox VM?

Quote:

core-2022.3.3 version
Home Assistant OS installation type

This is probably the native version.
I downloaded the iso file from the HA website, uploaded it to the memory card and it works.

I have access to HA via ssh, but after entering pip -m install libscrc paho-mqtt influxdb I get information that it does not recognize the pip command. It is most likely not installed.
How to install pip?

It is not possible to install the required python modules on HASSOS - you have two options - either you will run it on some raspberry or something that has linux or reinstall Home Assistant - on debian - then you have a working linux underneath and all HA including the supervisor, etc.

That's what I did, but it turns out that my version of sofar doesn't support it

kumaPL wrote:

but it turns out that my sofar version doesn't support it

Can you specify the types and versions of the software?
I have already encountered the fact that in new equipment there is a soft that does not work.

starob wrote:

Can you specify the types and versions of the software?
I have already encountered the fact that in new equipment there is a soft that does not work.

Version information from the solarman website
Hardware Version:V202
Master Software Version:V000005
Vice Software Version:V000003
Standard Main Version:0507
Communication processor firmware version:V000004

I bought it in February, but the distributor probably at the end of December because that's the date of purchase on the sofara website.
I have a SOFAR 11 KTL-X G3.
From what I found out, there is some difference in modbus

kumaPL wrote:

From what I found out, there is some difference in modbus

For now, forget about integration other than through the RS485 converter and modbus.
They changed the protocol and LAN versions don't work yet.
Didn't we already rewrite this topic as "ArturHome"?
Could you show a screenshot of the inverter status page?