Communication between two A16 over RS485 on ESPHOME with uart not working

[MarioR]

Hello,

Sending communication via IFTTT is not an alternative to native RS485 communication.
IFTTT requires a functioning network.
RS485 works without a network and is therefore much more fail-safe, similar to a PLC control system. 
My shutter control via ESPHome can be controlled via Homeassistant, but also works completely independently.

Best regards
Mario