Denarius

I believe my inverter is a rebranded EASUN SMX II and it works with solar assistant: https://solar-assistant.io/help/easun/configuration I registered on the site and could download the software without buying it: https://solar-assistant.io/help/getting-started/prepare-device

I couldn't find a good solution for a Solis RHI inverter. I tried my luck by contacting solar assistant as they list "Coming soon" for Solis on their website. It turns out the software already supports it, but it's currently just a small group of people using it with Solis. If you already have a Raspberry PI and know how to hook an RS485 adapter hooked up to your inverter or you have a WiFi dongle that supports modbus TCP, they give you a trial to try it. I found the email by using the "Contact us" link at the bottom of the page: https://solar-assistant.io/ It's not free but works well for monitoring. No inverter setting change support yet. Also works with Pylontech.

Actually the cheap cables are the scam. Original FTDI cables cost R500+, here is the official store: https://ftdichip.com/products/usb-rs485-we-1800-bt/ That said you can safely use cheap Chinese clones with SolarAssistant because it's Linux which won't break your hardware. Using fake FTDI chips on Windows has bricked them sometime in the past: https://hackaday.com/2016/02/01/ftdi-drivers-break-fake-chips-again/

Hi @Sc00bs, I also think it should work, but just in case it doesn't, I'm wondering if you have tried writing to it yet.

Does writing to registers also work?

@mneeth the BMS you have is listed on this page with some notes which might be useful https://solar-assistant.io/help/battery/revov @ttjaco the B100 is definitely readable with SolarAssistant via the telephone size RS232 port

I can successfully read the CAN data from my Pylontech battery now, but I don't how to determine which battery sent the CAN message. As an example, I receive this message, but I assume it's for the entire bank and I won't have individual battery metrics? Received frame: 0x355 Received data: 81, 95

I noticed in the latest solar assistant beta they have started adding the ability to change inverter settings: https://solar-assistant.io/help/home-assistant/adjust-settings I've started playing with the home assistant automations and it does cater for everything I wanted to do. To some extent it reduces the need for node red. With home assistant I can also build custom dashboards that combine solar assistant data with data from other devices. Seems like solar assistant features are available first to voltronic/axpert inverters then afterwards for deye/sunsynk.

From what I can see Geyserwise claims their element is slightly more power efficient than a normal element such as the kwikhot one.

I just installed a new home assistant and can confirm these steps work and is probably the least effort to get going: https://solar-assistant.io/help/home-assistant/energy

It looks like support to change inverter settings from Home Assistant was just released in the latest beta. I see it's currently just for adjusting the "Output source priority" of the voltronic/axpert inverters but they mention support for the "most important inverter settings" are coming "soon": https://solar-assistant.io/help/home-assistant/adjust-settings I'll wait for it to get to the stable release.

I would try a RS232 cable. To solve it temporarily you can probably restart the inverter.

Has anyone managed to write a modbus registers to the SunSynk 3 phase inverter? Whenever I write to it, it gives a success response, but the change doesn't take affect, if I read the same register right afterwards, it's still the old value. I've tried writing any register but none work. Note the 3 phase is different than the other inverters as the data stored in the modbus registers differ from what is posted in this topic.

Hi @JustinSchoeman, it seems the modbus registers on the new SunSynk 12kw (SUNSYNK-12K-SG04LP3) is completely different from the other SunSynk inverters. Do you perhaps have a contact to get the same documentation for this new model?

Impressive

If you run the latest beta you don't have to do anything fancy:

I'm running the solar assistant beta now. I see the kWh energy metrics are submitted every 1 minute, while the rest come in more or less every 1s. I don't store the 1s metrics in home assistant by ignoring them in the recorder. It's just there for showing live dashboards. https://www.home-assistant.io/integrations/recorder/ From what I can see in the database the home assistant energy module stores the data every hour even though they come in every minute.

Correction it's the 8kW, was thinking of MPPT array. I see there is a topic for this problem.

Same here except it's to COMM e41c and MCU 6006

The 5kw. Which one are you running and what is the version?

Hi Guys, my SunSynk firmware was upgraded to comm e41c and mcu 6006 which has caused the RS485 port to stop responding to modbus requests. It now seems completely unreadable. Did anyone else upgrade and get this issue?

I had the same issue. See this page: https://solar-assistant.io/shop/products/micro_usb

Hi Guys, I currently hard code my "Grid trickle feed" because I can't figure out which inverter register stores the value. Does anyone know which modbus register stores the value in the screenshot below?

MQTT is available now and was pretty easy to use in home assistant: https://solar-assistant.io/help/integration/mqtt https://solar-assistant.io/help/integration/home-assistant

I'm trying to retrieve essential and non-essential loads via nodered. Can anyone clarify the difference between the modbus registers that provide grid info: 167 - 172? And the difference between the various load registers: 176 - 178?