you can try to exchange RXD,TXD pin define.
here is video tour about use MODBUS by ESPHome case:
https://youtu.be/xEvOK3R12kc
here is video tour about use MODBUS by ESPHome case:
https://youtu.be/xEvOK3R12kc
YouTube: https://www.youtube.com/c/KinCony
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Online Store: https://shop.kincony.com
Alibaba Store: https://kincony.en.alibaba.com/

