public ExceptionCode WriteBytes(DataType DataType, int DB, int StartByteAdr, byte[] value)
{
byte[] bReceive = new byte[513];
int varCount = 0;
try
{
varCount = value.Length;
// first create the header
int packageSize = 35 + value.Length;
Types.ByteArray package = new Types.ByteArray(packageSize);
package.Add(new byte[] { 3, 0, 0 });
package.Add((byte)packageSize);
package.Add(new byte[] { 2, 0xf0, 0x80, 0x32, 1, 0, 0 });
package.Add(Types.Word.ToByteArray((ushort)(varCount - 1)));
package.Add(new byte[] { 0, 0x0e });
package.Add(Types.Word.ToByteArray((ushort)(varCount + 4)));
package.Add(new byte[] { 0x05, 0x01, 0x12, 0x0a, 0x10, 0x02 });
package.Add(Types.Word.ToByteArray((ushort)varCount));
package.Add(Types.Word.ToByteArray((ushort)(DB)));
package.Add((byte)DataType);
package.Add((byte)0);
package.Add(Types.Word.ToByteArray((ushort)(StartByteAdr * 8)));
package.Add(new byte[] { 0, 4 });
package.Add(Types.Word.ToByteArray((ushort)(varCount * 8)));
// now join the header and the data
package.Add(value);
mSocket.Send(package.array, package.array.Length, SocketFlags.None);
int numReceived = mSocket.Receive(bReceive, 512, SocketFlags.None);
if (bReceive[21] != 0xff)
{
throw new Exception(ExceptionCode.WrongNumberReceivedBytes.ToString());
}
return(ExceptionCode.ExceptionNo);
}
catch
{
lastErrorCode = ExceptionCode.WriteData;
lastErrorString = "";
return(lastErrorCode);
}
}
public byte[] ReadBytes(DataType DataType, int DB, int StartByteAdr, int count)
{
byte[] bytes = new byte[count];
try
{
// first create the header
int packageSize = 31;
Types.ByteArray package = new Types.ByteArray(packageSize);
package.Add(new byte[] { 0x03, 0x00, 0x00 });
package.Add((byte)packageSize);
package.Add(new byte[] { 0x02, 0xf0, 0x80, 0x32, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x0e, 0x00, 0x00, 0x04, 0x01, 0x12,
0x0a, 0x10 });
// package.Add(0x02); // datenart
switch (DataType)
{
case DataType.Timer:
case DataType.Counter:
package.Add((byte)DataType);
break;
default:
package.Add(0x02);
break;
}
package.Add(Types.Word.ToByteArray((ushort)(count)));
package.Add(Types.Word.ToByteArray((ushort)(DB)));
package.Add((byte)DataType);
package.Add((byte)0);
switch (DataType)
{
case DataType.Timer:
case DataType.Counter:
package.Add(Types.Word.ToByteArray((ushort)(StartByteAdr)));
break;
default:
package.Add(Types.Word.ToByteArray((ushort)((StartByteAdr) * 8)));
break;
}
mSocket.Send(package.array, package.array.Length, SocketFlags.None);
byte[] bReceive = new byte[512];
int numReceived = mSocket.Receive(bReceive, 512, SocketFlags.None);
if (bReceive[21] != 0xff)
{
throw new Exception(ExceptionCode.WrongNumberReceivedBytes.ToString());
}
for (int cnt = 0; cnt < count; cnt++)
{
bytes[cnt] = bReceive[cnt + 25];
}
return(bytes);
}
catch
{
lastErrorCode = ExceptionCode.WriteData;
lastErrorString = "";
return(null);
}
}