Client for reading data from Kostal inverters
var client = new ModbusClient("192.168.1.120");
var totalAcPowerResponse = await client.GetTotalAcPower();
Console.WriteLine(totalAcPowerResponse.ActivePower);
Console.WriteLine(totalAcPowerResponse.ReactivePower);
Console.WriteLine(totalAcPowerResponse.ApparentPower);