USR-TCP232-304 not getting data from Sunsynk inverter

[RolandSwe]

Hi There,

I am using a USR-TCP232-304 to read data from the RS485 port on my Sunsynk 8kw inverter. I am running HA OS via UTM on a MacMini M1. I previously tried using a USB to RS485 cable but had issues getting the data from the MacMini USB port into HA via UTM. So I have reverted to the USR to try access the data via TCP.

HA is communicating with the device and I am able to make the requests via the Add-On from HA but the TCP device is not getting any response from the inverter. I have checked and adjusted the polarity of the RJ45 cable. I have tested the cable with a multimeter to make sure the cable or connecter is not damaged. I have tried different Modbus ID’s. I have started from scratch with a fresh install of the Add-On and still nothing.

What could I be doing wrong?

[JanKraslice]

I've never been able to get "usr" to work with the Sunsynk or Deye Inverter add-on!

However, I use this RS485 you have—with the settings shown in the photo—to communicate directly with another device without an add-on.

Try changing the settings as shown in the photo, and if communication still doesn’t establish and you followed the instructions, I can recommend a converter that works for me personally.