public ErrorCode WriteBytes(DataType dataType, int db, int startByteAdr, byte[] value)
{
//TODO: implement support for dynamic PDU Size (208+32 / 448+32 / 928+32
byte[] bReceive = new byte[512];
int varCount = 0;
try
{
varCount = value.Length;
// first create the header
int packageSize = 35 + value.Length;
Types.ByteArray package = new Types.ByteArray(packageSize);
//TODO: dirty mixed dez/hex
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);
//TODO: ugly way to ensure addresses like : DB999.8192 are writable
if (startByteAdr > 8191)
{
package.Add((byte)1);
}
else
{
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(ErrorCode.WrongNumberReceivedBytes.ToString());
}
return(ErrorCode.NoError);
}
catch
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = "";
return(LastErrorCode);
}
}
private async Task <ErrorCode> WriteBitWithASingleRequestAsync(DataType dataType, int db, int startByteAdr, int bitAdr, bool bitValue)
{
byte[] bReceive = new byte[513];
int varCount = 0;
try
{
var value = new[] { bitValue ? (byte)1 : (byte)0 };
varCount = value.Length;
// first create the header
int packageSize = 35 + value.Length;
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(Word.ToByteArray((ushort)(varCount - 1)));
package.Add(new byte[] { 0, 0x0e });
package.Add(Word.ToByteArray((ushort)(varCount + 4)));
package.Add(new byte[] { 0x05, 0x01, 0x12, 0x0a, 0x10, 0x01 }); //ending 0x01 is used for writing a sinlge bit
package.Add(Word.ToByteArray((ushort)varCount));
package.Add(Word.ToByteArray((ushort)(db)));
package.Add((byte)dataType);
int overflow = (int)(startByteAdr * 8 / 0xffffU); // handles words with address bigger than 8191
package.Add((byte)overflow);
package.Add(Word.ToByteArray((ushort)(startByteAdr * 8 + bitAdr)));
package.Add(new byte[] { 0, 0x03 }); //ending 0x03 is used for writing a sinlge bit
package.Add(Word.ToByteArray((ushort)(varCount)));
// now join the header and the data
package.Add(value);
await stream.WriteAsync(package.Array, 0, package.Array.Length);
var s7data = await COTP.TSDU.ReadAsync(stream);
if (s7data == null || s7data[14] != 0xff)
{
throw new Exception(ErrorCode.WrongNumberReceivedBytes.ToString());
}
return(ErrorCode.NoError);
}
catch (Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return(LastErrorCode);
}
}
/// <summary>
/// Writes up to 200 bytes to the plc and returns NoError if successful. You must specify the memory area type, memory are address, byte start address and bytes count.
/// If the write was not successful, check LastErrorCode or LastErrorString.
/// </summary>
/// <param name="dataType">Data type of the memory area, can be DB, Timer, Counter, Merker(Memory), Input, Output.</param>
/// <param name="db">Address of the memory area (if you want to read DB1, this is set to 1). This must be set also for other memory area types: counters, timers,etc.</param>
/// <param name="startByteAdr">Start byte address. If you want to read DB1.DBW200, this is 200.</param>
/// <param name="value">Bytes to write. The lenght of this parameter can't be higher than 200. If you need more, use recursion.</param>
/// <returns>NoError if it was successful, or the error is specified</returns>
private ErrorCode WriteBytesWithASingleRequest(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);
var overflow = (int)(startByteAdr * 8 / 0xffffU); // handles words with address bigger than 8191
package.Add((byte)overflow);
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(ErrorCode.WrongNumberReceivedBytes.ToString());
}
return(ErrorCode.NoError);
}
catch (Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return(LastErrorCode);
}
}
public ErrorCode 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(ErrorCode.WrongNumberReceivedBytes.ToString());
}
return(ErrorCode.NoError);
}
catch
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = "";
return(LastErrorCode);
}
}
/// <summary>
/// Creates the header to read bytes from the plc
/// </summary>
/// <param name="amount"></param>
/// <returns></returns>
private Types.ByteArray ReadHeaderPackage(int amount = 1)
{
//header size = 19 bytes
var package = new Types.ByteArray(19);
package.Add(new byte[] { 0x03, 0x00, 0x00 });
//complete package size
package.Add((byte)(19 + (12 * amount)));
package.Add(new byte[] { 0x02, 0xf0, 0x80, 0x32, 0x01, 0x00, 0x00, 0x00, 0x00 });
//data part size
package.Add(Types.Word.ToByteArray((ushort)(2 + (amount * 12))));
package.Add(new byte[] { 0x00, 0x00, 0x04 });
//amount of requests
package.Add((byte)amount);
return(package);
}
/// <summary>
/// Convert S7 Byte Array to x86 Byte Array
/// </summary>
/// <param name="value">byte array</param>
/// <param name="dimension">array length</param>
/// <returns></returns>
public static byte[] SwapByte(this byte[] value, int dimension)
{
Types.ByteArray swapByte = new Types.ByteArray();
if (dimension > 1)
{
swapByte.Add(value[1]);
swapByte.Add(value[0]);
}
if (dimension > 3)
{
swapByte.Add(value[3]);
swapByte.Add(value[2]);
}
return(swapByte.array);
}
/// <summary>
/// Create the bytes-package to request data from the plc. You have to specify the memory type (dataType),
/// the address of the memory, the address of the byte and the bytes count.
/// </summary>
/// <param name="dataType">MemoryType (DB, Timer, Counter, etc.)</param>
/// <param name="db">Address of the memory to be read</param>
/// <param name="startByteAdr">Start address of the byte</param>
/// <param name="count">Number of bytes to be read</param>
/// <returns></returns>
private Types.ByteArray CreateReadDataRequestPackage(DataType dataType, int db, int startByteAdr, int count = 1)
{
//single data req = 12
var package = new Types.ByteArray(12);
package.Add(new byte[] { 0x12, 0x0a, 0x10 });
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);
var overflow = (int)(startByteAdr * 8 / 0xffffU); // handles words with address bigger than 8191
package.Add((byte)overflow);
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;
}
return(package);
}
public ErrorCode 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(ErrorCode.WrongNumberReceivedBytes.ToString());
}
return ErrorCode.NoError;
}
catch
{
LastErrorCode = ErrorCode.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(ErrorCode.WrongNumberReceivedBytes.ToString());
for (int cnt = 0; cnt < count; cnt++)
bytes[cnt] = bReceive[cnt + 25];
return bytes;
}
catch (SocketException socketException)
{
IsConnected = false;
LastErrorCode = ErrorCode.WriteData;
LastErrorString = socketException.Message;
return null;
}
catch(Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return null;
}
}
/// <summary>
/// Create the bytes-package to request data from the plc. You have to specify the memory type (dataType),
/// the address of the memory, the address of the byte and the bytes count.
/// </summary>
/// <param name="dataType">MemoryType (DB, Timer, Counter, etc.)</param>
/// <param name="db">Address of the memory to be read</param>
/// <param name="startByteAdr">Start address of the byte</param>
/// <param name="count">Number of bytes to be read</param>
/// <returns></returns>
private Types.ByteArray CreateReadDataRequestPackage(DataType dataType, int db, int startByteAdr, int count = 1)
{
//single data req = 12
var package = new Types.ByteArray(12);
package.Add(new byte[] { 0x12, 0x0a, 0x10 });
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);
var overflow = (int)(startByteAdr * 8 / 0xffffU); // handles words with address bigger than 8191
package.Add((byte)overflow);
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;
}
return package;
}
/// <summary>
/// Writes up to 200 bytes to the plc and returns NoError if successful. You must specify the memory area type, memory are address, byte start address and bytes count.
/// If the write was not successful, check LastErrorCode or LastErrorString.
/// </summary>
/// <param name="dataType">Data type of the memory area, can be DB, Timer, Counter, Merker(Memory), Input, Output.</param>
/// <param name="db">Address of the memory area (if you want to read DB1, this is set to 1). This must be set also for other memory area types: counters, timers,etc.</param>
/// <param name="startByteAdr">Start byte address. If you want to read DB1.DBW200, this is 200.</param>
/// <param name="value">Bytes to write. The lenght of this parameter can't be higher than 200. If you need more, use recursion.</param>
/// <returns>NoError if it was successful, or the error is specified</returns>
private ErrorCode WriteBytesWithASingleRequest(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);
var overflow = (int)(startByteAdr * 8 / 0xffffU); // handles words with address bigger than 8191
package.Add((byte)overflow);
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(ErrorCode.WrongNumberReceivedBytes.ToString());
}
return ErrorCode.NoError;
}
catch (Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return LastErrorCode;
}
}
/// <summary>
/// Creates the header to read bytes from the plc
/// </summary>
/// <param name="amount"></param>
/// <returns></returns>
private Types.ByteArray ReadHeaderPackage(int amount = 1)
{
//header size = 19 bytes
var package = new Types.ByteArray(19);
package.Add(new byte[] { 0x03, 0x00, 0x00 });
//complete package size
package.Add((byte)(19 + (12 * amount)));
package.Add(new byte[] { 0x02, 0xf0, 0x80, 0x32, 0x01, 0x00, 0x00, 0x00, 0x00 });
//data part size
package.Add(Types.Word.ToByteArray((ushort)(2 + (amount * 12))));
package.Add(new byte[] { 0x00, 0x00, 0x04 });
//amount of requests
package.Add((byte)amount);
return package;
}
public byte[] ReadBytes(DataType dataType, int DB, int startByteAdr, int count)
{
//TODO: implement check count <= PDU Size - 32 and throw exception
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 });
//switch datatype dynamicly
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);
//TODO: ugly way to ensure addresses like : DB999.8192 are readable
if (startByteAdr > 8191)
{
package.Add((byte)1);
}
else
{
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);
//TODO: implement support for dynamic PDU Size (208+32 / 448+32 / 928+32)
byte[] bReceive = new byte[512];
int numReceived = _mSocket.Receive(bReceive, 512, SocketFlags.None);
if (bReceive[21] != 0xff) throw new Exception(ErrorCode.WrongNumberReceivedBytes.ToString());
for (int cnt = 0; cnt < count; cnt++)
bytes[cnt] = bReceive[cnt + 25];
return bytes;
}
catch (SocketException socketException)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = socketException.Message;
return null;
}
catch (Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return null;
}
}
public ErrorCode WriteBytes(DataType dataType, int db, int startByteAdr, byte[] value)
{
//TODO: implement support for dynamic PDU Size (208+32 / 448+32 / 928+32
byte[] bReceive = new byte[512];
int varCount = 0;
try
{
varCount = value.Length;
// first create the header
int packageSize = 35 + value.Length;
Types.ByteArray package = new Types.ByteArray(packageSize);
//TODO: dirty mixed dez/hex
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);
//TODO: ugly way to ensure addresses like : DB999.8192 are writable
if (startByteAdr > 8191)
{
package.Add((byte)1);
}
else
{
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(ErrorCode.WrongNumberReceivedBytes.ToString());
}
return ErrorCode.NoError;
}
catch
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = "";
return LastErrorCode;
}
}
public byte[] ReadBytes(DataType dataType, int DB, int startByteAdr, int count)
{
//TODO: implement check count <= PDU Size - 32 and throw exception
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 });
//switch datatype dynamicly
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);
//TODO: ugly way to ensure addresses like : DB999.8192 are readable
if (startByteAdr > 8191)
{
package.Add((byte)1);
}
else
{
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);
//TODO: implement support for dynamic PDU Size (208+32 / 448+32 / 928+32)
byte[] bReceive = new byte[512];
int numReceived = _mSocket.Receive(bReceive, 512, SocketFlags.None);
if (bReceive[21] != 0xff)
{
throw new Exception(ErrorCode.WrongNumberReceivedBytes.ToString());
}
for (int cnt = 0; cnt < count; cnt++)
{
bytes[cnt] = bReceive[cnt + 25];
}
return(bytes);
}
catch (SocketException socketException)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = socketException.Message;
return(null);
}
catch (Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return(null);
}
}
/// <summary>
/// Convert S7 Byte Array to x86 Byte Array
/// </summary>
/// <param name="value">byte array</param>
/// <param name="dimension">array length</param>
/// <returns></returns>
public static byte[] SwapByte(this byte[] value, int dimension)
{
Types.ByteArray swapByte = new Types.ByteArray();
if (dimension > 1)
{
swapByte.Add(value[1]);
swapByte.Add(value[0]);
}
if (dimension > 3)
{
swapByte.Add(value[3]);
swapByte.Add(value[2]);
}
return swapByte.array;
}
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);
var overflow = (int)(startByteAdr * 8 / 0xffffU); // handles words with address bigger than 8191
package.Add((byte)overflow);
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);
byte[] bReceive = new byte[512];
int numReceived = _mSocket.Receive(bReceive, 512);
if (bReceive[21] != 0xff)
{
throw new Exception(ErrorCode.WrongNumberReceivedBytes.ToString());
}
for (int cnt = 0; cnt < count; cnt++)
{
bytes[cnt] = bReceive[cnt + 25];
}
return(bytes);
}
catch (SocketException socketException)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = socketException.Message;
return(null);
}
catch (Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return(null);
}
}
public void Add(ByteArray byteArray)
{
list.AddRange(byteArray.array);
}
