FoxESS Community - Owners & Installers Forum

Hi everyone,
solar rookie here

Just three days ago, I installed a new photovoltaic system with a Foxess inverter H1-6.0-E-G2 and batteries.
I’m looking to integrate it with Home Assistant using the inverter’s "METER/CT/RS485" port, as the FoxCloud integration has a 5-minute update delay, which isn’t ideal for my setup.

The problem is, this port is already occupied by a CHINT DDSU666 meter installed by my technician. When I asked if the meter was absolutely necessary, he explained that without it, I wouldn’t be able to track the energy produced in my house, and that my setup needs an external meter (I’ll attach a photo). So, it seems like I can’t simply remove it.

This is the new version inverter that doesn’t have the additional LAN port, so I can’t use that .

Is there any way to connect two devices to RS485 port? For example, could I use an Elfin EW11 or something similar aswell?

Apologies if this is a silly question—I’m still learning the ropes!

Hi, Full disclosure, I am not any sort of expert but also going through having a Fox ESS hybrid system installed. My inverter is a KH10 but looking at the installation manual for your H1 inverter it shows a connector (8 pin or 16 pin) that is used for 'Meter/CT/RS485' see page 23 of the installation manual. In this connector there are separate connections for a meter, pins 1 & 2, marked Meter 485A and Meter485B and also pins for another RS485 connection, pins 3 & 4. These are designated Pin 3: 485B and Pin 4: 485A. So, I believe it is entirely possible to have a meter connected AND a separate RS485 connection for Home Assistant via a suitable adaptor. I will be using the Pins 3 & 4 for my connection to HA via a Waveshare RS485 to LAN adaptor.
Hope this helps.
Regards, Hugh

Yes that’s correct, the meter uses pins 1 & 2 on the connector, pins 3 & 4 are available to connect your RS485 modbus device (Elfin, Waveshare etc..)

See https://github.com/nathanmarlor/foxess_ ... ring-Guide

Thanks everyone!!!