I am doing a project where I have to interface with Fronius Solar Inverter with Atmega32 MCU over MODBUS TCP. I want to set the MCU as client and The inverter as Server and I have to implement two MODBUS Function only these are READ_HOLDING_REGISTER and WRITE_SIGLE_REGISTER and Function Code are 0x03 and 0x06 respectively. I am newbie in this field and dont know about networking. Please anybody help me How can I develop the Software in C for this purpose??
The Document of Fronius Inverter for MODBUS TCP is Fronius MODBUS TCP Datamanger