p_i

More points to raise: so many nameless positive reviews on their web site, yet not a single one on Google or hellopeter or anywhere else? But according to web site they've been operating since sometime in 2023? Also, no company or VAT registration number listed anywhere? Too many red flags.

I've seen some weird results just reading the date & time from the inverters. It also doesn't match what's shown on the inverter screens. Anyway, your answers: a) Yes. fc=3; address=from-where-you-start-to-read; quantity=how-many-you-want-to-read b) Yes. fc=16; address=from-where-you-start-to-write; quantity=how-many-you-want-to-write c) I query about 30 single registers in a few seconds as part of my own "every 5 second" monitoring via node-red.

I tested my time setting code and even though the values I get via modbus from my 2 inverters differs by about 20 seconds, I went to check the screens and they're perfectly in sync. I think I need to debug a bit more when I'm awake in the morning. I'd hate to blow up my inverters now.

second = 5165%256 = 45 minute = (5165-second)/256 = 5120/256 = 20

Maybe support thinks that only installers have the ability to create a new plant. They underestimate us South Africans. For the reasons you mention, I'd imagine a new plant should only get new data and not have access to any of the old data. Only time will tell if it works this way or whether you indeed will get your historic data back.

@Ivan_E see my sample node-red flow too. I've edited my previous post to add it.

x % y = the remainder when you divide x by y. In the example above, 6147 = 24*256 + 3. Just trust me, node-red knows what to do with that.

month = 6147 % 256 = 3 year = (6147-month)/256 + 2000 = 6144/256 + 2000 = 24 + 2000 = 2024 Edit: I've hopefully attached my date & time fetching node-red flow. I have 2 inverters in parallel, hence the 2 nodes in my flow. Just nuke one of them if you only have 1 inverter. I'm using mbusd on a remote node hence the censored IP address, but it should be simple to edit the inverter configuration to whatever you're using, eg. rs485 usb dongles. flows.json

I seem to recall I bound and unbound my dongles multiple times in the past without the help of the installer. I even swapped dongles between inverters (my OCD in terms of equipment numbers). Back then I didn't care about old data since it was a new installation so I can't confirm whether I lost data then or not. But surely doing the dongle unbind on the plant and binding it again shouldn't lead to data loss? One would hope that the historical data is linked to the inverter and not the dongle. As I understand it the dongle is merely your "transfer agent" to move the data from the inverter to the Sunsynk cloud. So maybe your old data will appear again.

Yes, I wouldn't have deleted the plant but merely bound the dongle again. It's sad that support is so shoddy.

Based on the photos it appears the inverter and gateway are actually bound already? Go into your plant on the main screen and click on equipment at the bottom and show us the inverter and gateway screens (top buttons)? Edit: Oh wait, I see your main screen shows "3 days ago", so the communication is probably down there. Mine shows "a few seconds ago" in that spot.

I was forced to login at least twice this morning (using desktop browser) and I'm seeing current data. Maybe try logging out and back in?

In my opinion, disabling time sync in the setup is a much less destructive option. Surely you will require that dongle if the firmware ever needs to be updated?

It's been unstable since 04:40 this morning. 04:40 was my last reading in sequence and then there's several readings missing after that.

I've been looking at those too since the outage this past weekend. Those registers are 16bit (2 bytes) values where the high 8bit (byte) is the first value and the low 8bit (byte) is the second value. In simplified code this means that: month = register22%256; year = (register22-month)/256+2000; hour = register23%256; day = (register23-hour)/256; second = register24%256; minute = (register24-second)/256; % = modulus function. I'm not sure how you're going to do this in HA as I'm using node-red to do these calculations. I still need to test my time updating code but I need to do this close to midnight so I don't mess up my daily totals if I get it wrong.

Just turn off the "Time sync" option on the inverter. That way the totals won't be mucked up like that.

Even my own monitoring were affected by the randomly changing time on the inverters. It appears that when the time is adjusted in the wrong direction the daily totals are zero'ed on the inverters. I managed to get past this by unticking the "Time sync" option and manually correcting the date & time. Are you telling me that Solar Assistant still had the correct daily totals? Please note: I'm not attacking the product and merely wondering.

I've observed that the time is randomly changing on my inverters during this debacle and since schedules are time driven I've turned off the time sync option and manually corrected the current time and my schedules are once again working. Does anybody know what server(s) the inverters use to sync time?

Photo? Never mind, found it here:

Oh thank goodness. I was beginning to think it was due to local changes I've made (pi-hole installation). I should have known it was the Sunsynk data handling again...

I'm using mbusd on a RPI3b and I can connect to it from node-red running on another device using the same settings you listed (apart from the IP). Maybe the docker container is preventing you from accessing it? Maybe try to telnet to that IP on port 502 from another device on the same subnet? If telnet fails to connect, you might have a docker issue.

I've used 2x 120mm fans on each of my 5kw inverters. I simply cable tied them together and they're resting on top of the inverters. Yes, at some stage I'll have to come up with a proper mounting kit, but there's no reason to not use larger fans.

Try this thread here:

I'd hazard a guess that this site is a scam. They list their address as in KZN (2 different addresses in header and footer), yet they claim to be located in Westlake in Cape Town and offer free delivery in the Cape Town area. Other than that, the price is way too low so this is most likely it's a scam.

Is it just the photo or is the protective plastic film still covering the batteries?