Shutting down did not work this weekend. It was the first time I tried.
Hi Phil,
If I understand your flow correctly I assume you have an Energy Meter and you set your system to a zero-export at negative prices, am I right?
How does that work for you?
Iām looking into getting an Energy Meter to connect to my Growatt 3000TL3-S to be able to get to zero-export due to changing legislation in the Netherlands next year.
using the solaredge mobile app is a bit tricky, you cannot do both , solaredge will correct it straight away when you change it with homey. Also trying to get rid of it is even harder. if you disable it again, still it is controlled by them, sometimes a reset of the inverter helps or make a support call.
what did you try? , active power and it went back to 100% again. you have solaredge with meters and batterries or not. if so you can set export power to 0 , 100w or so
I only have solar panels. With the strongly negative electricity prices this weekend (dynamic contract), I wanted to shut the system down. I havenāt been able to enter the tariffs correctly in the SE app so that it switches off and back on at the right times ā and Iām not the only one; thereās a lot of discussion about this on various forums.
I created the following flow, but nothing happened at all 
Hi,
Have this automated from day one, works flawless. As you see the flow contains some queries to avoid unnecessary settings send to the inverter and by flow export has the lowest prio.
All this was possible after some days of development with Edwin.
EDIT:
I have my Eastron smartmeter installed in the main junction box and modbus wired with the inverter (in my case to the backup box, which is then connected to the inverter modbus).
yep, I expect something is still enabled on solaredge app and your inverter corrects it. maybe recheck the app and make a support call to solaredge .
I think on the inverter you have 2 options , something like reset power .. or even more drastic , do factory reset but you loose the data and need to enable modbus again.
Quick check in the manual of your inverter learned me that you need to connect your datalogger to the RS232 port to be able to use the RS485 for the MODbus/TCP bridge. Not sure how to connect the smartmeter to this config.
My inverter has a meter connection seperated from the RS485 port.
Done. It actually is much simpler than I originally thought. You need to do some preparation easiest done via Sunny Portal ennexOS or Sunny Explorer to set up the inverter to receive remote system control commands.
Once that is done you only need to ModBus write a calcād power % setpoint which you need to renew every minute or at least within 10 mins (which is the fallback time setting).
So for now my SMA STP 9000TL-20 inverter does zero export @ neg prices using a Homey and Homewizard P1, with a 1 min response time. With pos prices it reverts to the active power setting limit (which is also the ref for power scaling %).
Next phase is to integrate the battery in the flow and ensure PV is dominant power source.
I have a Growatt ShineWifi connected that handles the logging and cloud connection, and the RS485 connected to a Waveshare Modbus RTU to TCP gateway.
As I understand it I should add the Energy Meter, an Eastron SDM630 ModbusV3, to the Modbus wiring.
I worked together with Edwin to write the driver for my particular Growatt model as itās an old inverter that isnāt compatible with the driver for the newer models.
You need a smartmeter idd, I use the one mentioned, but I have 2 RS485 connectors..
As far as I know, MODbus is daisy chained, and addressing correctly, it should work. Never tried though
Hi all,
I connected my Huawei SUN2000 inverter using this app, but when trying to make a flow it only shows āifā cards and no āthenā cards. Is this because I donāt have an energy meter?
Hello Edwin, all, I have good experience connecting my StorEdge inverter via Modbus TCP (local) to Homey Pro through your app. I wonder, can the latest series of SolarEdge inverters, the Home Hub series, also be connected and work in exacly the same way as the StorEdge series? I am about to replace my SolarEdge StorEdge inverter by a SolarEdge Home Hub inverter (with backup interface). I assume it will simply adding a new device (adding IP-address, selecting the correct port and Device ID) and that all my advanced flows will resume working. Will that be the case and is my assumption correct that all flows will resume working? Thanks in advance.
Your flow entries with a device remain working as within that device only parameters change. Replacing hardware and create a new device requires all flows to be modified, hence all entries with the old device remain in the flow, but functions are very unclear after device deletion..!!!
Personally I have not seen possibilities to have a new device ātaking overā all the flow-entries of any other device which needs to be replaced, from light bulbs to inverters. WIth the development of the app for 2 inverters it was required to install the testversion of the app and create a NEW device, the flows until that moment needed to be modified..
To avoid problems of interpretation (delete the device and flows entries may not be clear anymore) simply do NOT delete the (old) device prior to copy all flows with the NEW device first.
[EDIT] You might want to change some settings in the old device, avoid interferences if there are any.
Edwin, you might want to confirm this.
Thanks Phil_Bro, I think youāre right. I should not delete the device, but make sure that Iāve got the same fixed IP-address, Device ID etc and not add a new device.
My guess is that you need to add your new device in any case, but dont delete the old one and copy the advanced flows to edit with the new device. You might have a chance keeping all settings equal, but this is way above my expertise, hence Edwin should be able to hook-in.
Hi Phil_Bro,
The solution was fairly simple: just changing the inverter 
All worked as normal in Homey Pro. I just needed to set the exact same IP-address and port and activate TCP Modbus in my inverter settings.
Yeah, deleting the āoldā device was not needed. Iāam quite fortunate I did not have to edit/replace all the āoldā cards in my advanced flows. My flows remained working.
Thanks for thinking along, appreciated!
Norbert
Good2Hear Norbert!
Hi, just a small question.
Iām using a new SunGrow Installation and use this app to connect to the system. ( Small proxy running on Homey: GitHub - PaulMysec/homey-modbus-tls-proxy Ā· GitHub - port 516 instead of port 5020)
The solar value is correctly available āPower Generated from PVā, but this is not selectable as a value to use in insights for the dashboard. Any tips out there? Thank you.
expect nothing will change for you, modbus registers are very stable. maybe they add some more values to some register. but the updated docs will show those changes
