I've recently had a Sunsynk 5.5kw installed and I'm trying to collect data using the RS485 port without success. No matter what I try I can't collect data. I've tried the ports labelled RS485 and BMS 485.
I'm using the following rs485 to USB converters:
https://www.robotics.org.za/RS485-3P?search=rs485
The ethernet cable I'm running to the device is wired like this:
Cables 1 and 7 are connected to B and cables 2 and 8 are connected to B. I've tested the ethernet cable itself by crimping both ends and connecting my laptop to it.
After adding the flows node-red continuously tries to connect. When trying to connect using Python the minimalmodbus module the connection times out.
Does anyone have any other ideas?