caswell1000

I am indeed pulling two datasets from two inverters, master and slave, master address is 0x01 slave 0x02, I have made two esp32 modules each connected to one inverter, my ether ports are slightly different on the two, for master I had to connect on the rs485/Can port, it shares the port with the battery cable via a splitter. For slave I used bms 485 port, it does not share the port. 
Thanks to @Magetsi I managed to ignore the initial errors and connected to the shared port on the master and got readings, my TX rx are 1and 3 and 16 is the control pin. I had errors before finding the right port in both instances. Aport from the pins and the soldering, finding the right port is important, I used @slipx yaml, it allows for reading and writing data,no more having to manually change the grid charging settings 1 by one, I do that on homeassistant with scenes as per the YT video from solar integrations.
 
Good Luck

been struggling on this as well. Having exactly the same errors. I started off trying to get this working on tasmota. On Friday I thought i had made a breakthrough when i started getting responses on Tasmota firmware.  When i queried this on Tasmota forums, it turned out that the responses were seemingly garbage. I then uploaded esphome with Slipx yaml file. On this i am getting CRC errors. I removed the R7 resistor as suggested. But that has had no positive changes seen so far.

Ah OK, if I am seeing Errors like this
[23:46:01][W][modbus_controller:113]: Duplicate modbus command found: type=0x3 address=154 count=1
[23:46:01][W][modbus_controller:113]: Duplicate modbus command found: type=0x3 address=160 count=1
[23:46:01][W][modbus_controller:113]: Duplicate modbus command found: type=0x3 address=164 count=1
and 
[23:46:05][D][modbus_controller:032]: Modbus command to device=1 register=0xA0 countdown=0 no response received - removed from send queue
[23:46:06][D][modbus_controller:032]: Modbus command to device=1 register=0xA4 countdown=0 no response received - removed from send queue
[23:46:08][D][modbus_controller:032]: Modbus command to device=1 register=0xA6 countdown=0 no response received - removed from send queue
Is this a wiring issue or sensor issue please?
Thanks Ivan