Connect RS485 KC868-HAv2 to Server Mini

[admin]

i suggest you see these two video tour firstly:
https://youtu.be/s5Htc43HqAc
https://youtu.be/S679QX6Hc6I

Server-Mini Serial port pin define see here:
https://www.kincony.com/forum/showthread.php?tid=3001

1. if you use multi HAv2, the last one module you can enable 120 Ω termination resistor, just enable the jumper on PCB. other HAv2 all remove the jumper.

2. HAv2 use private protocol, not modbus. no modbus firmware to use.

3. use PC software to config every HAv2 rs485 address and baud rate, default is 9600bps.
here is online guide: https://www.kincony.com/how-to-use-rs485...apter.html

4.
a. it will show similar name as /dev/ttyAMA0
b. how to enable serial port for CM4, see here: https://www.kincony.com/forum/showthread.php?tid=4086
c. esphome yaml file download: https://www.kincony.com/forum/showthread.php?tid=3875

5. all have showed in video tour.