private void SendData(S7OexchangeBlock data)
{
if (!Disposed)
{
int len = Marshal.SizeOf(data);
byte[] buffer = new byte[len];
data.headerlength = 80; //Length of the Header (always 80) (but the 4 first unkown bytes are not count)
data.rb_type = 2; //rb_type is always 2
data.offset_1 = 80; //Offset of the Begin of userdata (but the 4 first unkown bytes are not count)
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(data, ptr, true);
Marshal.Copy(ptr, buffer, 0, len);
Marshal.FreeHGlobal(ptr);
int ret = SCP_send(_connectionHandle, (ushort)(data.seg_length_1 + data.headerlength), buffer);
if (ret < 0)
{
throw new S7OnlineException(SCP_get_errno());
}
}
else
{
throw new ObjectDisposedException(this.ToString());
}
}
private void DisconnectPlcsimStatemachine()
{
switch (m_PlcsimConnectionState)
{
case PlcsimConnectionState.DisconnectState1:
S7OexchangeBlock fdr = new S7OexchangeBlock();
fdr = GetNewS7OexchangeBlock(user: 0, rb_type: 2, subsystem: 0x40, opcode: 12, response: 0xffff);
fdr.fill_length_1 = 0;
fdr.seg_length_1 = 0;
fdr.offset_1 = 80;
fdr.application_block_opcode = m_application_block_opcode;
fdr.application_block_subsystem = m_application_block_subsystem;
SendS7OExchangeBlockToPlcsim(fdr);
// Simatic applications use a two-step disconnect, but this sometimes makes problems.
// So don't use it anymore, works also without this.
//
//m_PlcsimConnectionState = PlcsimConnectionState.DisconnectState2;
//break;
//case PlcsimConnectionState.DisconnectState2:
//rec = ReceiveFromPlcsimDirect();
//if (rec.opcode == 0x0c && rec.response == 0x0001)
//{
// m_PlcsimConnectionState = PlcsimConnectionState.NotConnected;
// ExitThisThread();
//}
m_PlcsimConnectionState = PlcsimConnectionState.NotConnected;
ExitThisThread();
break;
}
}
public S7OnlineInterface(string EntryPoint)
{
_entryPoint = EntryPoint;
_connectionHandle = SCP_open(_entryPoint);
if (_connectionHandle < 0)
{
this.Dispose();
throw new S7OnlineException(SCP_get_errno());
}
S7OexchangeBlock fdr = new S7OexchangeBlock();
formBackgroundThread = new Thread(new ThreadStart(createFormInOtherThread));
formBackgroundThread.IsBackground = true;
formBackgroundThread.Start();
//_myForm = new _intForm(_connectionHandle, Marshal.SizeOf(fdr), this);
//SetSinecHWndMsg(_connectionHandle, _myForm.Handle, WM_SINEC);
while (!WndProcReady)
{
}
}
public void DisconnectPlc(Connection conn)
{
conn.ConnectionEstablished = false;
S7OexchangeBlock fdr;
if (conn.ConnectionConfig.ConnectionToEthernet)
{
fdr = new S7OexchangeBlock();
fdr.user = (ushort)conn.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 8;
fdr.response = 255;
fdr.application_block_opcode = conn.application_block_opcode;
SendData(fdr);
RecieveData((ushort)conn.ConnectionNumber);
}
fdr = new S7OexchangeBlock();
fdr.user = (ushort)conn.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 0xC;
fdr.response = 255;
fdr.application_block_service = 0x8000;
fdr.application_block_opcode = conn.application_block_opcode;
fdr.application_block_subsystem = conn.application_block_subsystem;
SendData(fdr);
RecieveData((ushort)conn.ConnectionNumber);
ConnectionsList.Remove(conn.ConnectionNumber);
}
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_SINEC) //WM_SINEC Message recieved, recieve Data
{
int[] rec_len = new int[1];
byte[] buffer = new byte[fdrlen];
SCP_receive(_connectionHandle, 0, rec_len, (ushort)fdrlen, buffer);
GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
S7OexchangeBlock rec = (S7OexchangeBlock)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(S7OexchangeBlock));
handle.Free();
if (Interface.ConnectionsList[rec.user].ConnectionEstablished)
{
Interface.ConnectionsList[rec.user].SetRecievedPdu(new Pdu(rec.user_data_1));
}
else
{
Interface.ConnectionsList[rec.user].RecievedData = rec;
}
}
else
{
base.WndProc(ref m);
}
}
protected void DumpS7OexchangeBlock(S7OexchangeBlock fd)
{
string dump;
dump = ("******************** S7OexchangeBlock **********************************" + Environment.NewLine);
dump += ("** Header Start **" + Environment.NewLine);
//dump += ("unknown : 0x" + String.Format("{0:X02}", fd.unknown[0] + fd.unknown[1] + Environment.NewLine);
dump += ("headerlength : " + fd.headerlength + Environment.NewLine);
dump += ("user : 0x" + String.Format("{0:X02}", fd.user) + Environment.NewLine);
dump += ("rb_type : 0x" + String.Format("{0:X02}", fd.rb_type) + Environment.NewLine);
dump += ("priority : 0x" + String.Format("{0:X02}", fd.priority) + Environment.NewLine);
dump += ("reserved_1 : 0x" + String.Format("{0:X02}", fd.reserved_1) + Environment.NewLine);
dump += ("reserved_2 : 0x" + String.Format("{0:X02}", fd.reserved_2) + Environment.NewLine);
dump += ("subsystem : 0x" + String.Format("{0:X02}", fd.subsystem) + Environment.NewLine);
dump += ("opcode : 0x" + String.Format("{0:X02}", fd.opcode) + Environment.NewLine);
dump += ("response : 0x" + String.Format("{0:X02}", fd.response) + Environment.NewLine);
dump += ("fill_length_1: 0x" + String.Format("{0:X02}", fd.fill_length_1) + Environment.NewLine);
dump += ("reserved_3 : 0x" + String.Format("{0:X02}", fd.reserved_3) + Environment.NewLine);
dump += ("seg_length_1 : 0x" + String.Format("{0:X02}", fd.seg_length_1) + Environment.NewLine);
dump += ("offset_1 : 0x" + String.Format("{0:X02}", fd.offset_1) + Environment.NewLine);
dump += ("reserved_4 : 0x" + String.Format("{0:X02}", fd.reserved_4) + Environment.NewLine);
dump += ("fill_length_2: 0x" + String.Format("{0:X02}", fd.fill_length_2) + Environment.NewLine);
dump += ("reserved_5 : 0x" + String.Format("{0:X02}", fd.reserved_5) + Environment.NewLine);
dump += ("seg_length_2 : 0x" + String.Format("{0:X02}", fd.seg_length_2) + Environment.NewLine);
dump += ("offset_2 : 0x" + String.Format("{0:X02}", fd.offset_2) + Environment.NewLine);
dump += ("reserved_6 : 0x" + String.Format("{0:X02}", fd.reserved_6) + Environment.NewLine);
dump += ("** End of Header **" + Environment.NewLine);
dump += ("** Start of application Block **" + Environment.NewLine);
dump += ("application_block_opcode : 0x" + String.Format("{0:X02}", fd.application_block_opcode) + Environment.NewLine);
dump += ("application_block_subsystem : 0x" + String.Format("{0:X02}", fd.application_block_subsystem) + Environment.NewLine);
dump += ("application_block_id : 0x" + String.Format("{0:X02}", fd.application_block_id) + Environment.NewLine);
dump += ("application_block_service : 0x" + String.Format("{0:X02}", fd.application_block_service) + Environment.NewLine);
dump += ("application_block_local_address_station : 0x" + String.Format("{0:X02}", fd.application_block_local_address_station) + Environment.NewLine);
dump += ("application_block_local_address_segment : 0x" + String.Format("{0:X02}", fd.application_block_local_address_segment) + Environment.NewLine);
dump += ("application_block_ssap : 0x" + String.Format("{0:X02}", fd.application_block_ssap) + Environment.NewLine);
dump += ("application_block_dsap : 0x" + String.Format("{0:X02}", fd.application_block_dsap) + Environment.NewLine);
dump += ("application_block_remote_address_station : 0x" + String.Format("{0:X02}", fd.application_block_remote_address_station) + Environment.NewLine);
dump += ("application_block_remote_address_segment : 0x" + String.Format("{0:X02}", fd.application_block_remote_address_segment) + Environment.NewLine);
dump += ("application_block_service_class : 0x" + String.Format("{0:X02}", fd.application_block_service_class) + Environment.NewLine);
dump += ("application_block_receive_l_sdu_length : 0x" + String.Format("{0:X02}", fd.application_block_receive_l_sdu_length) + Environment.NewLine);
dump += ("application_block_reserved_1 : 0x" + String.Format("{0:X02}", fd.application_block_reserved_1) + Environment.NewLine);
dump += ("application_block_reserved : 0x" + String.Format("{0:X02}", fd.application_block_reserved) + Environment.NewLine);
dump += ("application_block_send_l_sdu_length : 0x" + String.Format("{0:X02}", fd.application_block_send_l_sdu_length) + Environment.NewLine);
dump += ("application_block_l_status : 0x" + String.Format("{0:X02}", fd.application_block_l_status) + Environment.NewLine);
dump += ("** End of application Block **" + Environment.NewLine);
dump += ("** Start user_data_1 **" + Environment.NewLine);
if (fd.user_data_1 != null)
{
dump += HexDumping.Utils.HexDump(fd.user_data_1, fd.user_data_1.Length);
}
dump += ("** End user_data_1 **" + Environment.NewLine);
dump += ("**************************************************************");
DoTrace(dump, false);
}
private S7OexchangeBlock RecieveData(ushort myConnNr)
{
while (ConnectionsList[myConnNr].RecievedData == null)
{
}
S7OexchangeBlock rec = (S7OexchangeBlock)ConnectionsList[myConnNr].RecievedData;
ConnectionsList[myConnNr].RecievedData = null;
return(rec);
}
protected S7OexchangeBlock GetNewS7OexchangeBlock(ushort user, byte rb_type, byte subsystem, byte opcode, ushort response)
{
S7OexchangeBlock block = new S7OexchangeBlock();
block.headerlength = 80;
block.user = user;
block.rb_type = rb_type;
block.subsystem = subsystem;
block.opcode = opcode;
block.response = response;
return(block);
}
private void createFormInOtherThread()
{
try
{
S7OexchangeBlock fdr = new S7OexchangeBlock();
_myForm = new _intForm(_connectionHandle, Marshal.SizeOf(fdr), this);
SetSinecHWndMsg(_connectionHandle, _myForm.Handle, WM_SINEC);
WndProcReady = true;
Application.Run();
}
catch (ThreadAbortException)
{ }
}
private void ReceiveFromPlcsimAndSendBack()
{
int[] rec_len = new int[1];
byte[] buffer = new byte[m_FdrLen];
if (SCP_receive(m_connectionHandle, 0, rec_len, (ushort)m_FdrLen, buffer) == -1)
{
if (m_connectionHandle > 0)
{
if (m_PlcsimConnectionState == PlcsimConnectionState.ConnectState1 ||
m_PlcsimConnectionState == PlcsimConnectionState.ConnectState2 ||
m_PlcsimConnectionState == PlcsimConnectionState.ConnectState3)
{
SendConnectErrorMessage("ERROR: Connect failed in SCP_receive at " + m_PlcsimConnectionState.ToString());
}
else
{
int errno = SCP_get_errno();
string errtxt = GetErrTxt(errno);
SendErrorMessage("ERROR: SCP_receive() failed. m_connectionHandle = " + m_connectionHandle + " SCP_get_errno=" + errno + " (" + errtxt + ")");
}
}
ExitThisThread();
return;
}
GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
S7OexchangeBlock rec = (S7OexchangeBlock)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(S7OexchangeBlock));
handle.Free();
if (rec.opcode == 6 && rec.response == 1)
{
// don't care
}
else if (rec.opcode == 7 && rec.response == 3)
{
byte[] recbytes = new byte[rec.fill_length_1];
Array.Copy(rec.user_data_1, recbytes, rec.fill_length_1);
SendPduMessage(recbytes);
S7OexchangeBlock snd = GetNewS7OexchangeBlock(user: 0, rb_type: 2, subsystem: 0x40, opcode: 7, response: 0xffff);
snd.offset_1 = 80;
snd.fill_length_1 = 0;
snd.seg_length_1 = SEG_LENGTH_1;
snd.application_block_opcode = rec.application_block_opcode;
snd.application_block_subsystem = rec.application_block_subsystem;
SendS7OExchangeBlockToPlcsim(snd);
}
}
protected S7OexchangeBlock ReceiveFromPlcsimDirect()
{
S7OexchangeBlock rec = new S7OexchangeBlock();
int[] rec_len = new int[1];
int len = Marshal.SizeOf(rec);
byte[] buffer = new byte[len];
if (SCP_receive(m_connectionHandle, 0, rec_len, (ushort)len, buffer) == 0)
{
GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
rec = (S7OexchangeBlock)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(S7OexchangeBlock));
handle.Free();
}
return(rec);
}
public void SendPdu(Pdu pdu, Connection connection)
{
if (!Disposed)
{
byte[] pdubytes = pdu.ToBytes();
S7OexchangeBlock fdr = new S7OexchangeBlock();
fdr.user = (ushort)connection.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 6;
fdr.response = 255;
fdr.fill_length_1 = (byte)pdubytes.Length;
fdr.seg_length_1 = (byte)pdubytes.Length;
fdr.application_block_opcode = connection.application_block_opcode;
//if (!connection.ConnectionConfig.ConnectionToEthernet)
fdr.application_block_subsystem = connection.application_block_subsystem;
fdr.headerlength = 80; //Length of the Header (always 80) (but the 4 first unkown bytes are not count)
fdr.rb_type = 2; //rb_type is always 2
fdr.offset_1 = 80; //Offset of the Begin of userdata (but the 4 first unkown bytes are not count)
fdr.user_data_1 = new byte[260];
Array.Copy(pdubytes, fdr.user_data_1, pdubytes.Length);
int len = Marshal.SizeOf(fdr);
byte[] buffer = new byte[len];
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(fdr, ptr, true);
Marshal.Copy(ptr, buffer, 0, len);
Marshal.FreeHGlobal(ptr);
int ret = SCP_send(_connectionHandle, (ushort)(fdr.seg_length_1 + fdr.headerlength), buffer);
if (ret < 0)
{
throw new S7OnlineException(SCP_get_errno());
}
}
else
{
throw new ObjectDisposedException(this.ToString());
}
}
public PlcS7onlineMsgPump(IPAddress plc_ipaddress, int rack, int slot)
{
m_PlcIPAddress = plc_ipaddress;
m_PlcRack = rack;
m_PlcSlot = slot;
m_connectionHandle = -1;
m_user = 1;
m_PlcsimConnectionState = PlcsimConnectionState.NotConnected;
S7OexchangeBlock fdr = new S7OexchangeBlock();
m_FdrLen = Marshal.SizeOf(fdr);
m_TraceEnabled = false;
if (m_TraceEnabled)
{
Trace.Listeners.Add(new TextWriterTraceListener("PlcsimS7online.log"));
DoTrace("Start trace...");
}
}
private void SendDataToPlcsim(WndProcMessage msg)
{
if (++m_user >= 32000)
{
m_user = 1;
}
S7OexchangeBlock snd = GetNewS7OexchangeBlock(user: m_user, rb_type: 2, subsystem: 0x40, opcode: 6, response: 0xff);
snd.offset_1 = 80;
snd.application_block_opcode = m_application_block_opcode;
snd.application_block_subsystem = m_application_block_subsystem;
snd.fill_length_1 = (ushort)msg.pdu.Length;
snd.seg_length_1 = (ushort)msg.pdu.Length;
snd.user_data_1 = new byte[SIZE_OF_USER_DATA_1];
Array.Copy(msg.pdu, snd.user_data_1, msg.pdu.Length);
SendS7OExchangeBlockToPlcsim(snd);
}
private void GetResponsePdu(Connection connection)
{
if (!Disposed)
{
S7OexchangeBlock fdr = new S7OexchangeBlock();
fdr.user = (ushort)connection.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 7;
fdr.seg_length_1 = 480;
fdr.response = 16642;
fdr.application_block_opcode = connection.application_block_opcode;
fdr.application_block_subsystem = connection.application_block_subsystem;
fdr.headerlength = 80; //Length of the Header (always 80) (but the 4 first unkown bytes are not count)
fdr.rb_type = 2; //rb_type is always 2
fdr.offset_1 = 80; //Offset of the Begin of userdata (but the 4 first unkown bytes are not count)
fdr.user_data_1 = new byte[260];
int len = Marshal.SizeOf(fdr);
byte[] buffer = new byte[len];
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(fdr, ptr, true);
Marshal.Copy(ptr, buffer, 0, len);
Marshal.FreeHGlobal(ptr);
int ret = SCP_send(_connectionHandle, (ushort)(fdr.seg_length_1 + fdr.headerlength), buffer);
if (ret < 0)
{
throw new S7OnlineException(SCP_get_errno());
}
}
else
{
throw new ObjectDisposedException(this.ToString());
}
}
protected void SendS7OExchangeBlockToPlcsim(S7OexchangeBlock data)
{
int len = Marshal.SizeOf(data);
byte[] buffer = new byte[len];
ushort send_len = (ushort)(data.seg_length_1 + data.headerlength);
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(data, ptr, false);
Marshal.Copy(ptr, buffer, 0, len);
Marshal.DestroyStructure(ptr, typeof(S7OexchangeBlock));
Marshal.FreeHGlobal(ptr);
int ret = SCP_send(m_connectionHandle, send_len, buffer);
if (ret < 0)
{
SendErrorMessage("ERROR: SCP_send failed");
ExitThisThread();
}
}
public S7OnlineInterface(string EntryPoint)
{
_entryPoint = EntryPoint;
_connectionHandle = SCP_open(_entryPoint);
if (_connectionHandle < 0)
{
this.Dispose();
throw new S7OnlineException(SCP_get_errno());
}
S7OexchangeBlock fdr = new S7OexchangeBlock();
formBackgroundThread = new Thread(new ThreadStart(createFormInOtherThread));
formBackgroundThread.IsBackground = true;
formBackgroundThread.Start();
//_myForm = new _intForm(_connectionHandle, Marshal.SizeOf(fdr), this);
//SetSinecHWndMsg(_connectionHandle, _myForm.Handle, WM_SINEC);
while (!WndProcReady)
{ }
}
private void SendData(S7OexchangeBlock data)
{
if (!Disposed)
{
int len = Marshal.SizeOf(data);
byte[] buffer = new byte[len];
data.headerlength = 80; //Length of the Header (always 80) (but the 4 first unkown bytes are not count)
data.rb_type = 2; //rb_type is always 2
data.offset_1 = 80; //Offset of the Begin of userdata (but the 4 first unkown bytes are not count)
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(data, ptr, true);
Marshal.Copy(ptr, buffer, 0, len);
Marshal.FreeHGlobal(ptr);
int ret = SCP_send(_connectionHandle, (ushort) (data.seg_length_1 + data.headerlength), buffer);
if (ret < 0)
throw new S7OnlineException(SCP_get_errno());
}
else
{
throw new ObjectDisposedException(this.ToString());
}
}
private void GetResponsePdu(Connection connection)
{
if (!Disposed)
{
S7OexchangeBlock fdr = new S7OexchangeBlock();
fdr.user = (ushort)connection.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 7;
fdr.seg_length_1 = 480;
fdr.response = 16642;
fdr.application_block_opcode = connection.application_block_opcode;
fdr.application_block_subsystem = connection.application_block_subsystem;
fdr.headerlength = 80; //Length of the Header (always 80) (but the 4 first unkown bytes are not count)
fdr.rb_type = 2; //rb_type is always 2
fdr.offset_1 = 80; //Offset of the Begin of userdata (but the 4 first unkown bytes are not count)
fdr.user_data_1 = new byte[260];
int len = Marshal.SizeOf(fdr);
byte[] buffer = new byte[len];
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(fdr, ptr, true);
Marshal.Copy(ptr, buffer, 0, len);
Marshal.FreeHGlobal(ptr);
int ret = SCP_send(_connectionHandle, (ushort)(fdr.seg_length_1 + fdr.headerlength), buffer);
if (ret < 0)
throw new S7OnlineException(SCP_get_errno());
}
else
{
throw new ObjectDisposedException(this.ToString());
}
}
private void createFormInOtherThread()
{
try
{
S7OexchangeBlock fdr = new S7OexchangeBlock();
_myForm = new _intForm(_connectionHandle, Marshal.SizeOf(fdr), this);
SetSinecHWndMsg(_connectionHandle, _myForm.Handle, WM_SINEC);
WndProcReady = true;
Application.Run();
}
catch (ThreadAbortException)
{ }
}
public void SendPdu(Pdu pdu, Connection connection)
{
if (!Disposed)
{
byte[] pdubytes = pdu.ToBytes();
S7OexchangeBlock fdr = new S7OexchangeBlock();
fdr.user = (ushort) connection.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 6;
fdr.response = 255;
fdr.fill_length_1 = (byte) pdubytes.Length;
fdr.seg_length_1 = (byte) pdubytes.Length;
fdr.application_block_opcode = connection.application_block_opcode;
//if (!connection.ConnectionConfig.ConnectionToEthernet)
fdr.application_block_subsystem = connection.application_block_subsystem;
fdr.headerlength = 80; //Length of the Header (always 80) (but the 4 first unkown bytes are not count)
fdr.rb_type = 2; //rb_type is always 2
fdr.offset_1 = 80; //Offset of the Begin of userdata (but the 4 first unkown bytes are not count)
fdr.user_data_1 = new byte[260];
Array.Copy(pdubytes, fdr.user_data_1, pdubytes.Length);
int len = Marshal.SizeOf(fdr);
byte[] buffer = new byte[len];
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(fdr, ptr, true);
Marshal.Copy(ptr, buffer, 0, len);
Marshal.FreeHGlobal(ptr);
int ret = SCP_send(_connectionHandle, (ushort)(fdr.seg_length_1 + fdr.headerlength), buffer);
if (ret < 0)
throw new S7OnlineException(SCP_get_errno());
}
else
{
throw new ObjectDisposedException(this.ToString());
}
}
public void DisconnectPlc(Connection conn)
{
conn.ConnectionEstablished = false;
S7OexchangeBlock fdr;
if (conn.ConnectionConfig.ConnectionToEthernet)
{
fdr = new S7OexchangeBlock();
fdr.user = (ushort) conn.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 8;
fdr.response = 255;
fdr.application_block_opcode = conn.application_block_opcode;
SendData(fdr);
RecieveData((ushort) conn.ConnectionNumber);
}
fdr = new S7OexchangeBlock();
fdr.user = (ushort)conn.ConnectionNumber;
fdr.subsystem = 64;
fdr.opcode = 0xC;
fdr.response = 255;
fdr.application_block_service = 0x8000;
fdr.application_block_opcode = conn.application_block_opcode;
fdr.application_block_subsystem = conn.application_block_subsystem;
SendData(fdr);
RecieveData((ushort)conn.ConnectionNumber);
ConnectionsList.Remove(conn.ConnectionNumber);
}
public Connection ConnectPlc(ConnectionConfig config)
{
//eine eindeutige connection id erzeugen
//in der connection eine liste der pdus pflegen, auf welche noch gewartet wird.
//für die pdu welche asynchron kommt nummer 0 verwenden!
S7OexchangeBlock fdr = new S7OexchangeBlock();
S7OexchangeBlock rec = new S7OexchangeBlock();
int len = Marshal.SizeOf(fdr);
byte[] buffer = new byte[len];
IntPtr ptr;
GCHandle handle;
Connection retVal;
while (ConnectionsList.ContainsKey(connNr))
{
connNr++;
if (connNr >= ushort.MaxValue)
connNr = 1;
}
retVal = new Connection(this, config, 0);
retVal.ConnectionNumber = connNr;
ConnectionsList.Add(connNr, retVal);
//Todo:
//Im Feld fdr.user für jede Connection einen eigenen Wert verwenden, so das bei empfangen Daten auch
//Festgestellt werden kann für welche Connection die sind.
//Dann muss eine Liste geführt werden, in der die IDs und die zugehörige Connection gespeichert ist.
//Wenn dann auf der ID was empfangen wird, wird das an die Connection weitergeleitet!
if (!config.ConnectionToEthernet)
{
#region Telegramm 1
fdr.subsystem = 0x22;
fdr.response = 0xFF;
fdr.user = connNr;//0xFF;
fdr.seg_length_1 = 0x80;
fdr.priority = 1;
fdr.application_block_service = (ushort)service_code.fdl_life_list_create_remote;
SendData(fdr);
rec = RecieveData(connNr);
#endregion
#region Telegramm 2
fdr.seg_length_1 = 0xF2;
fdr.application_block_service = (ushort) service_code.fdl_read_value;
SendData(fdr);
rec = RecieveData(connNr);
#endregion
}
#region Telegramm 3 (Ethernet 1)
fdr = new S7OexchangeBlock();
fdr.user = connNr;
fdr.response = 255;
fdr.subsystem = 0x40;
SendData(fdr);
rec = RecieveData(connNr);
retVal.application_block_opcode = rec.application_block_opcode;
retVal.application_block_subsystem = rec.application_block_subsystem;
#endregion
#region Telegramm 4 (Ethernet 2)
fdr = new S7OexchangeBlock();
fdr.user = connNr;// 111;
fdr.subsystem = 64;
fdr.opcode = 1;
fdr.response = 255;
fdr.fill_length_1 = 126;
fdr.seg_length_1 = 126;
fdr.application_block_opcode = retVal.application_block_opcode;
fdr.application_block_ssap = 2;
fdr.application_block_remote_address_station = 114;
fdr.application_block_subsystem = retVal.application_block_subsystem; //When this is One it is a MPI Connection, zero means TCP Connection!
UserDataConnectionConfig ud_cfg = new UserDataConnectionConfig(true);
ud_cfg.rack_slot = (byte) (config.Slot + config.Rack*32);
ud_cfg.connection_type = (byte) config.ConnectionType;
if (config.ConnectionToEthernet)
{
ud_cfg.destination_1 = config.IPAddress.GetAddressBytes()[0];
ud_cfg.destination_2 = config.IPAddress.GetAddressBytes()[1];
ud_cfg.destination_3 = config.IPAddress.GetAddressBytes()[2];
ud_cfg.destination_4 = config.IPAddress.GetAddressBytes()[3];
}
else
ud_cfg.destination_1 = (byte) config.MPIAddress;
if (config.Routing)
{
ud_cfg.routing_enabled = 0x01;
ud_cfg.rack_slot = (byte) (config.RoutingSlot + config.RoutingRack*32);
ud_cfg.size_of_subnet = 0x06;
ud_cfg.routing_destination_1 = (byte) ((config.RoutingSubnet1 >> 8) & 0xFF);
ud_cfg.routing_destination_2 = (byte) ((config.RoutingSubnet1) & 0xFF);
ud_cfg.routing_destination_3 = (byte) ((config.RoutingSubnet2 >> 8) & 0xFF);
ud_cfg.routing_destination_4 = (byte) ((config.RoutingSubnet2) & 0xFF);
if (!config.RoutingToEthernet)
{
ud_cfg.size_of_routing_destination = 0x01;
ud_cfg.routing_destination_1 = (byte) config.RoutingMPIAddres;
ud_cfg.size_to_end = 0x09;
}
else
{
ud_cfg.size_of_routing_destination = 0x04;
ud_cfg.routing_destination_1 = config.RoutingIPAddress.GetAddressBytes()[0];
ud_cfg.routing_destination_2 = config.RoutingIPAddress.GetAddressBytes()[1];
ud_cfg.routing_destination_3 = config.RoutingIPAddress.GetAddressBytes()[2];
ud_cfg.routing_destination_4 = config.RoutingIPAddress.GetAddressBytes()[3];
ud_cfg.size_to_end = 0x0C;
}
}
ptr = Marshal.AllocHGlobal(Marshal.SizeOf(ud_cfg));
Marshal.StructureToPtr(ud_cfg, ptr, true);
fdr.user_data_1 = new byte[260];
Marshal.Copy(ptr, fdr.user_data_1, 0, Marshal.SizeOf(ud_cfg));
Marshal.FreeHGlobal(ptr);
SendData(fdr);
rec = RecieveData(connNr);
if (rec.response != 0x01)
throw new S7OnlineException("S7Online: Error Connection to PLC");
#endregion
#region Telegramm 5 (Ethernet 3) (this Telegramm sends a PDU)
//5th Telegramm / TCP(3rd)
Pdu pdu = new Pdu(1);
pdu.Param.AddRange(new byte[] {0xF0, 0, 0, 1, 0, 1, 3, 0xc0});
SendPdu(pdu, retVal);
Pdu recPdu = RecievePdu(connNr);
#endregion
#region Telegramm 6 (Ethernet 4) (get PDU size)
fdr = new S7OexchangeBlock();
fdr.user = connNr;//0;
fdr.subsystem = 64;
fdr.opcode = 7;
fdr.response = 16642;
fdr.seg_length_1 = 480;
fdr.application_block_opcode = retVal.application_block_opcode;
fdr.application_block_subsystem = retVal.application_block_subsystem;
SendData(fdr);
recPdu = RecievePdu(connNr);
retVal.PduSize = ByteFunctions.getU16from(recPdu.Param.ToArray(), 6);
#endregion
retVal.ConnectionEstablished = true;
return retVal;
}
public Connection ConnectPlc(ConnectionConfig config)
{
//eine eindeutige connection id erzeugen
//in der connection eine liste der pdus pflegen, auf welche noch gewartet wird.
//für die pdu welche asynchron kommt nummer 0 verwenden!
S7OexchangeBlock fdr = new S7OexchangeBlock();
S7OexchangeBlock rec = new S7OexchangeBlock();
int len = Marshal.SizeOf(fdr);
byte[] buffer = new byte[len];
IntPtr ptr;
GCHandle handle;
Connection retVal;
while (ConnectionsList.ContainsKey(connNr))
{
connNr++;
if (connNr >= ushort.MaxValue)
{
connNr = 1;
}
}
retVal = new Connection(this, config, 0);
retVal.ConnectionNumber = connNr;
ConnectionsList.Add(connNr, retVal);
//Todo:
//Im Feld fdr.user für jede Connection einen eigenen Wert verwenden, so das bei empfangen Daten auch
//Festgestellt werden kann für welche Connection die sind.
//Dann muss eine Liste geführt werden, in der die IDs und die zugehörige Connection gespeichert ist.
//Wenn dann auf der ID was empfangen wird, wird das an die Connection weitergeleitet!
if (!config.ConnectionToEthernet)
{
#region Telegramm 1
fdr.subsystem = 0x22;
fdr.response = 0xFF;
fdr.user = connNr;//0xFF;
fdr.seg_length_1 = 0x80;
fdr.priority = 1;
fdr.application_block_service = (ushort)service_code.fdl_life_list_create_remote;
SendData(fdr);
rec = RecieveData(connNr);
#endregion
#region Telegramm 2
fdr.seg_length_1 = 0xF2;
fdr.application_block_service = (ushort)service_code.fdl_read_value;
SendData(fdr);
rec = RecieveData(connNr);
#endregion
}
#region Telegramm 3 (Ethernet 1)
fdr = new S7OexchangeBlock();
fdr.user = connNr;
fdr.response = 255;
fdr.subsystem = 0x40;
SendData(fdr);
rec = RecieveData(connNr);
retVal.application_block_opcode = rec.application_block_opcode;
retVal.application_block_subsystem = rec.application_block_subsystem;
#endregion
#region Telegramm 4 (Ethernet 2)
fdr = new S7OexchangeBlock();
fdr.user = connNr;// 111;
fdr.subsystem = 64;
fdr.opcode = 1;
fdr.response = 255;
fdr.fill_length_1 = 126;
fdr.seg_length_1 = 126;
fdr.application_block_opcode = retVal.application_block_opcode;
fdr.application_block_ssap = 2;
fdr.application_block_remote_address_station = 114;
fdr.application_block_subsystem = retVal.application_block_subsystem; //When this is One it is a MPI Connection, zero means TCP Connection!
UserDataConnectionConfig ud_cfg = new UserDataConnectionConfig(true);
ud_cfg.rack_slot = (byte)(config.Slot + config.Rack * 32);
ud_cfg.connection_type = (byte)config.ConnectionType;
if (config.ConnectionToEthernet)
{
ud_cfg.destination_1 = config.IPAddress.GetAddressBytes()[0];
ud_cfg.destination_2 = config.IPAddress.GetAddressBytes()[1];
ud_cfg.destination_3 = config.IPAddress.GetAddressBytes()[2];
ud_cfg.destination_4 = config.IPAddress.GetAddressBytes()[3];
}
else
{
ud_cfg.destination_1 = (byte)config.MPIAddress;
}
if (config.Routing)
{
ud_cfg.routing_enabled = 0x01;
ud_cfg.rack_slot = (byte)(config.RoutingSlot + config.RoutingRack * 32);
ud_cfg.size_of_subnet = 0x06;
ud_cfg.routing_destination_1 = (byte)((config.RoutingSubnet1 >> 8) & 0xFF);
ud_cfg.routing_destination_2 = (byte)((config.RoutingSubnet1) & 0xFF);
ud_cfg.routing_destination_3 = (byte)((config.RoutingSubnet2 >> 8) & 0xFF);
ud_cfg.routing_destination_4 = (byte)((config.RoutingSubnet2) & 0xFF);
if (!config.RoutingToEthernet)
{
ud_cfg.size_of_routing_destination = 0x01;
ud_cfg.routing_destination_1 = (byte)config.RoutingMPIAddres;
ud_cfg.size_to_end = 0x09;
}
else
{
ud_cfg.size_of_routing_destination = 0x04;
ud_cfg.routing_destination_1 = config.RoutingIPAddress.GetAddressBytes()[0];
ud_cfg.routing_destination_2 = config.RoutingIPAddress.GetAddressBytes()[1];
ud_cfg.routing_destination_3 = config.RoutingIPAddress.GetAddressBytes()[2];
ud_cfg.routing_destination_4 = config.RoutingIPAddress.GetAddressBytes()[3];
ud_cfg.size_to_end = 0x0C;
}
}
ptr = Marshal.AllocHGlobal(Marshal.SizeOf(ud_cfg));
Marshal.StructureToPtr(ud_cfg, ptr, true);
fdr.user_data_1 = new byte[260];
Marshal.Copy(ptr, fdr.user_data_1, 0, Marshal.SizeOf(ud_cfg));
Marshal.FreeHGlobal(ptr);
SendData(fdr);
rec = RecieveData(connNr);
if (rec.response != 0x01)
{
throw new S7OnlineException("S7Online: Error Connection to PLC");
}
#endregion
#region Telegramm 5 (Ethernet 3) (this Telegramm sends a PDU)
//5th Telegramm / TCP(3rd)
Pdu pdu = new Pdu(1);
pdu.Param.AddRange(new byte[] { 0xF0, 0, 0, 1, 0, 1, 3, 0xc0 });
SendPdu(pdu, retVal);
Pdu recPdu = RecievePdu(connNr);
#endregion
#region Telegramm 6 (Ethernet 4) (get PDU size)
fdr = new S7OexchangeBlock();
fdr.user = connNr;//0;
fdr.subsystem = 64;
fdr.opcode = 7;
fdr.response = 16642;
fdr.seg_length_1 = 480;
fdr.application_block_opcode = retVal.application_block_opcode;
fdr.application_block_subsystem = retVal.application_block_subsystem;
SendData(fdr);
recPdu = RecievePdu(connNr);
retVal.PduSize = ByteFunctions.getU16from(recPdu.Param.ToArray(), 6);
#endregion
retVal.ConnectionEstablished = true;
return(retVal);
}
private Pdu RecievePdu(ushort myConnNr)
{
S7OexchangeBlock rec = RecieveData(myConnNr);
return(new Pdu(rec.user_data_1));
}