I am trying to help my neighbor update his Wallmount battery firmware.
The reseller sent him an RS485 cable and said to use that.
We tried it and it seems that we cannot get communication between the battery and the PC.
Which cable is used for Firmware updates on the Wallmount? RS 485 or RS 232?
I thought the 485 cable was for BMS Tools and the 232 cable was for firmware??
Thanks,
JB