Let's Control It

I neeed to connect ESP with some Arduino. I want to use wire and ModbusRTU. Arduino is slave and ESP is master. How can I get it with EspEasy? I see "ESPEasy/src/Modbus_RTU.ino" but I cant understand how can I use it.

There are currently 2 plugins using Modbus RTU.
AcuEnergy DC24x
SenseAir (S8/S11)

There is no "generic" plugin for Modbus, so you need to write one yourself.
I think the AcuEnergy is the simplest one to get started with.

Thanks for your answer. I will try to understand how working plugins P085, P052, P078 and make new one.

P078 is the Eastron plugin and although it uses Modbus RTU, its library we used has still its own implementation (which eventually will be merged into the same)