static void Main(string[] args)
{
ModbusTCP modbus = new ModbusTCP("192.168.0.115", 502);
modbus.OnException += Modbus_OnException;
modbus.OnResponseData += Modbus_OnResponseData;
modbus.ReadCoilsAsync(1, 1, 0, 2);
var conn = modbus.Connected;
ushort start = 16;
ushort lenght = 2;
// calculate the number of bytes data needs
int numBytes = (lenght / 8 + (lenght % 8 > 0 ? 1 : 0));
byte[] data = new byte[numBytes];
byte[] multipleCoils = new byte[lenght];
multipleCoils[0] = 255;
multipleCoils[1] = 255;
// write data to device
byte[] result = new byte[numBytes];
modbus.WriteMultipleCoils(1, 1, start, lenght, multipleCoils, ref result);
//modbus.WriteSingleCoil(1, 1, start, false, ref result);
//read data from device
modbus.ReadHoldingRegisters(1, 1, start, lenght, ref data);
// convert data into int value
int length2 = data.Length / 2 + Convert.ToInt16(data.Length % 2 > 0);
var word = new int[length2];
for (int x = 0; x < length2; x++)
{
word[x] = data[x * 2] * 256 + data[x * 2 + 1];
Console.WriteLine(word[x]);
}
//convert data into bit value
BitArray bitArray = new BitArray(data);
int[] numbers = new int[bitArray.Count];
for (int i = 0; i < bitArray.Length; i++)
{
numbers[i] = bitArray[i] ? 1 : 0;
Console.WriteLine($"Coil {i} : {numbers[i]}");
}
//var data1 = Convert.ToBoolean(Convert.ToByte("3"));
//var coils = Convert.ToString(data[0],2);
//var reversed = coils.ToArray();
//Array.Reverse(reversed);
//foreach (var item in reversed)
//{
// Console.WriteLine(item);
//}
modbus.OnException -= Modbus_OnException;
modbus.OnResponseData -= Modbus_OnResponseData;
modbus.Disconnect();
Console.ReadLine();
}