How do I configure a second SigenStor?

[username11384]

Hey! I'm getting a second SigenStor installed in a few days, and I'm wondering how I can link them together in the same Plant. They'll both have unique IP addresses, do I set the second SigenStor Modbus server address to my current one?

For some context, I've got a 32kWh one right now, and I'm installing a new 48kWh stack with an EV AC charger. What the hell do I do? I know the EVAC is ID1 but what do I do to combine them in the same plant? Do I need to change all the addresses? Here's a shittily drawn diagram to explain. Any help is appreciated!!

Just wanna be able to see them in Home Assistant as a 'logical battery pool' where it can auto calculate the SoC for both batteries and have that plant.power. From what it seems like, if I just enable the modbus server it would show up in HA as a second plant but I want them to be under the same plant.

[evski]

I have too stacks, just had to modify the dashboard in HAS to combine some of the values from both inverters to get plant totals.

[username11384]

How did you combine the values? If mine are different sizes i’m not sure how to compute the values

[TypQxQ]

I wanted to say that if your installer doesn’t know, change installer.

But more helpfull, haven’t tried it and I’m not an installer…

One has activated the TCP Server, the one you’r gonna connect to, hence the server. The other one you give another Local Address, like 2 for example, or 3 if you have the first as 2, and enter the ip address of the first Inverter, the one running the server. That will make them cofunction in the same plant. But maybe I’m off a bit and your installer knows better.

Anyways, in HA, go to the settings for the integration and add a inverter to the existing plant, leave the ip of the first one and only change the DeviceID.

The integration connects to only the ip of the first (master/server) inverter and gets the values for your AC, DC and multiple inverters.

Like I said, I don’t have this but in theory that’s how it should worrk 😄