using S7.Net;

Plc plc = new Plc(CpuType.S71200, "127.0.0.1", 0, 1);		

try
{
	plc.Open();
}
catch(Exception)
{
	Console.WriteLine($"連接到PLC設備失?。篒sConnect = {plc.IsConnected},IsAvailable={plc.IsAvailable}");
	return;
}

/*
方法：public object Read(string variable)
入?yún)ⅲ鹤x取數(shù)據(jù)地址
出參：Object類型數(shù)據(jù)，可強制類型轉換
*/
var db1Bool1 = plc.Read("DB1.DBX0.0");
Console.WriteLine("DB1.DBX0.0:" + db1Bool1);

bool db1Bool2 = (bool)plc.Read("DB1.DBX0.1");
Console.WriteLine("DB1.DBX0.1:" + db1Bool2);

int IntVariable = (ushort)plc.Read("DB1.DBW2.0");
Console.WriteLine("DB1.DBW2.0:" + IntVariable);

float RealVariable = ((uint)plc.Read("DB1.DBD4.0")).ConvertToFloat();
Console.WriteLine("DB1.DBD4.0:" + RealVariable);

var dIntVariable = (uint)plc.Read("DB1.DBD8.0");
Console.WriteLine("DB1.DBD8.0: " + dIntVariable);

var dWordVariable = (uint)plc.Read("DB1.DBD12.0");
Console.WriteLine("DB1.DBD12.0: " + Convert.ToString(dWordVariable, 16));

var wordVariable = (ushort)plc.Read("DB1.DBW16.0");
Console.WriteLine("DB1.DBW16.0: " + Convert.ToString(wordVariable,16));

/*
方法：public byte[] ReadBytes(DataType dataType, int db, int startByteAdr, int count)
入?yún)ⅲ?
	1、DataType數(shù)據(jù)類型，可選擇從DB塊或者Memory中讀取；
	2、db：1：DataBlock=1,Memory=0；
	3、startByteAdr：起始地址，即DB塊的起始偏移量；
	4、count:讀取大小，該大小由讀取的DB塊的最后一個數(shù)據(jù)的偏移量和大小決定，這里最后一個字節(jié)WordVariable偏移量為16，數(shù)據(jù)類型為word，2個字節(jié)，因此此次讀取為16+2=18個字節(jié)。
出參：Byte[],這里Byte[]的大小必然和count的大小是相同的，
*/
//讀取數(shù)據(jù)選擇從DB塊中讀取，db設置為1，起始地址為0，讀取18個字節(jié)
var bytes = plc.ReadBytes(DataType.DataBlock, 1, 0, 18);
//取字節(jié)0中的第0位
var db1Bool1 = bytes[0].SelectBit(0);
Console.WriteLine("DB1.DBX0.0:" + db1Bool1);
//取字節(jié)0中的第1位
bool db1Bool2 = bytes[0].SelectBit(1); ;
Console.WriteLine("DB1.DBX0.1:" + db1Bool2);
//跳到字節(jié)2并連續(xù)取兩個字節(jié)數(shù)據(jù)
int IntVariable = S7.Net.Types.Int.FromByteArray(bytes.Skip(2).Take(2).ToArray());
Console.WriteLine("DB1.DBW2.0:" + IntVariable);
//...
double RealVariable = S7.Net.Types.Real.FromByteArray(bytes.Skip(4).Take(4).ToArray());
Console.WriteLine("DB1.DBD4.0:" + RealVariable);
//...
int dIntVariable = S7.Net.Types.DInt.FromByteArray(bytes.Skip(8).Take(4).ToArray());
Console.WriteLine("DB1.DBD8.0: " + dIntVariable);
//...
uint dWordVariable = S7.Net.Types.DWord.FromByteArray(bytes.Skip(12).Take(4).ToArray());
Console.WriteLine("DB1.DBD12.0: " + Convert.ToString(dWordVariable, 16));
//...
ushort wordVariable = S7.Net.Types.Word.FromByteArray(bytes.Skip(16).Take(2).ToArray());
Console.WriteLine("DB1.DBW16.0: " + Convert.ToString(wordVariable, 16));

/*
方法：public void Write(string variable, object value)
入?yún)ⅲ?
	1、string variable：寫入地址
	2、object value，寫入數(shù)據(jù)
*/
plc.Write("DB1.DBX0.0", true);
plc.Write("DB1.DBD12.0", 123457);

/*
public void WriteBytes(DataType dataType, int db, int startByteAdr, byte[] value)
用法如同ReadBytes,這里就不在寫例程了，有興趣的可以自己研究一下
*/

 plc.Close();