public string ReadCommand(general.PLCLink link)
{
string str = link.cmd;
byte[] dataByte = System.Text.Encoding.ASCII.GetBytes(str);
byte[] dataByte2 = new byte[1] {
0xD
};
NetworkStream stream = connection.GetStream();
Debug.Print("Start sending command ...");
stream.Write(dataByte, 0, dataByte.Length);
stream.Write(dataByte2, 0, dataByte2.Length);
Debug.Print("Command was send!");
int timeout = Environment.TickCount;
while (connection.Available == 0 && (timeout + 5000) > Environment.TickCount)
{
}
if (connection.Available != 0)
{
Debug.Print("Reading data ...");
byte[] receiveByte = new byte[connection.ReceiveBufferSize + 1];
stream.Read(receiveByte, 0, receiveByte.Length);
Debug.Print("Data was read!");
string retStr = System.Text.Encoding.ASCII.GetString(receiveByte, 0, receiveByte.Length);
return(retStr);
}
Debug.Print("Time out!");
return("");
}
public void AddLink(general.PLCLink link)
{
if (ReferenceEquals(ConnList, null))
{
ConnList = new List <general.PLCLink>();
}
ConnList.Add(link);
}
public override void CalcCommand(bool Write = false, string value = "")
{
if (ReferenceEquals(link, null))
{
link = new general.PLCLink();
}
if (Write)
{
link.cmd = "M" + value;
}
else
{
link.cmd = "?M";
}
}
public virtual void CalcCommand(bool Write = false, string value = "")
{
if (ReferenceEquals(link, null))
{
link = new general.PLCLink();
}
link.add.MemType = MemoryType;
link.add.MemAdd = PLCAddress;
link.add.format = DataFormat;
if (Write)
{
link.cmd = "WR " + link.add.MemType + System.Convert.ToString(link.add.MemAdd) + link.add.format + " " + value;
}
else
{
link.cmd = "RD " + link.add.MemType + System.Convert.ToString(link.add.MemAdd) + link.add.format;
}
}
public void SendRequest(ref general.PLCLink link)
{
if (link.enable == false)
{
return;
}
string returnStr = "";
if (ReferenceEquals(connection, null))
{
Debug.Print("Creat connection");
connection = new TcpClient();
}
if (!connection.Connected)
{
try
{
//connection.ConnectAsync(_IP, _port)
connection.Connect(_IP, _port);
Debug.Print("Start connecting ...");
int timeout = Environment.TickCount;
while (((timeout + 5000) > Environment.TickCount) && (connection.Connected == false))
{
}
if (connection.Connected == true)
{
Debug.Print("Connected!");
}
}
catch (Exception)
{
}
}
if (connection.Connected)
{
returnStr = ReadCommand(link);
link.usingmethod.useResult(returnStr);
}
else
{
}
}
public void CalcRequestCommand(bool write = false, int value = 0)
{
if (ReferenceEquals(link, null))
{
link = new general.PLCLink();
}
if (write)
{
if (value == 0)
{
link.cmd = "RS " + link.add.MemType + System.Convert.ToString(link.add.MemAdd);
}
else
{
link.cmd = "ST " + link.add.MemType + System.Convert.ToString(link.add.MemAdd);
}
}
else
{
link.cmd = "RD " + link.add.MemType + System.Convert.ToString(link.add.MemAdd) + link.add.format;
}
}