FoxESS Community - Owners & Installers Forum

I have new installation of an ESS Evo 10-5-H, (yesterday, woo hoo).
My plan is to get it registering and controlling it's SoC through Home Assistant.
I have:-
1) Battery installed and working in self use mode, can be controlled through the FoxCloud app
2) Home Assistant running, it's been running for a couple of years and I'm reasonably proficient with it. Currently running version 2026.1.0
3) A Waveshare to Ethernet adapter, POE version this one https://www.waveshare.com/wiki/RS485_TO_ETH_(B)
the Waveshare is powered and configured and I'm connected to the Evo via COMM pins 9 & 10. The Act LED on the Evo is flickering green/blue every second. Firmware on the Waveshare is V1. 486

I'm trying to install https://github.com/nathanmarlor/foxess_modbus but I'm currently getting the error
"Details: Modbus Error: [Input/Output] No Response received from the remote slave/Unable to decode response"

I'm not convinced I'm on the right terminals on the battery side, they are listed as meter_485a & b, and 11 & 12 are 485a & b. But, when I switch to 11 & 12, I get a solid blue light on Act, which make me think I'm picking up the meter feed.

Anyone got any suggestions?

485A/B are the correct pins (12/11), if the ACT light is on permanently it usually indicates you have reversed the A/B pair it should be A to A, B to B

I should have added, i’m not sure whether Nathan’s integration works out of the box with EVO’s, there is a long thread over here https://foxesscommunity.com/viewtopic.php?t=2548, somebody did a branch of Nathan’s with the necessary changes and i’m not sure that they have been merged with Nathan’s.

If you post over on that thread there’s lot’s of EVO users there that should be able to offer help.

Cheers Dave. I've swapped back to 11&12. Permanent blue on the Act LED, so I've swapped over and now there's nothing on the LED. Maybe progress, maybe not

I'll work my way through the other thread, I'm away for a couple of days so I'll have to tinker in the week.

You know what? I think it's working now.
I'm back to my original configuration before I started second guessing myself.

I wonder if needed to power cycle the Waveshare a bit more frequently after fiddling.

Recap in case anyone's looking in the future:-
EVO 10-5-H, use terminals 11 & 12, don't doubt the manual.
Waveshare on most recent firmware (not sure if this is necessary).
Solid blue LED is bad, swap cables over at the waveshare, then power cycle. I now have no ACT led, but it seems OK. Flickering LED might be bad.

Installed the Home Assistant integration from https://github.com/AdamNewberry/foxess_modbus_EVO

Viola! All seems to be working.

Nicely done