Reading your earlier comment, you mentioned pins 1/2. It might be pins 7/8 (A/B) similar to the EG4 batteries. I think luxpower inverters are 1/2 (B/A). That said, I don’t find any definitive documentation for the RS485 bus for your inverter.
The adapter should also clearly show if you are on ch-1 or ch-2 depending where you wired it up…
I recently switched from modbus over the WiFi dongle to rs485 for one of my FB21 inverters. The difference in reliability is amazing.
Now I want to do the same for my GridBOSS. I can’t find clear guidance on doing it. Can someone point me in the right direction?
Not sure it's possible with GridBOSS without hijacking/replacing the HDMI dongle.