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/*=============================================================================|
| PROJECT Sharp7 1.0.0 |
|==============================================================================|
| Copyright (C) 2016 Davide Nardella |
| All rights reserved. |
|==============================================================================|
| Sharp7 is free software: you can redistribute it and/or modify |
| it under the terms of the Lesser GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| It means that you can distribute your commercial software which includes |
| Sharp7 without the requirement to distribute the source code of your |
| application and without the requirement that your application be itself |
| distributed under LGPL. |
| |
| Sharp7 is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| Lesser GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License and a |
| copy of Lesser GNU General Public License along with Sharp7. |
| If not, see http://www.gnu.org/licenses/ |
|=============================================================================*/
using System;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
//------------------------------------------------------------------------------
// If you are compiling for UWP verify that WINDOWS_UWP or NETFX_CORE are
// defined into Project Properties->Build->Conditional compilation symbols
//------------------------------------------------------------------------------
#if WINDOWS_UWP || NETFX_CORE
using System.Threading.Tasks;
using Windows.Networking;
using Windows.Networking.Sockets;
using Windows.Storage.Streams;
#else // <-- Including MONO
using System.Net.Sockets;
#endif
namespace Sharp7
{
#region [Async Sockets UWP(W10,IoT,Phone)/Windows 8/Windows 8 Phone]
#if WINDOWS_UWP || NETFX_CORE
class MsgSocket
{
private DataReader Reader = null;
private DataWriter Writer = null;
private StreamSocket TCPSocket;
private bool _Connected;
private int _ReadTimeout = 2000;
private int _WriteTimeout = 2000;
private int _ConnectTimeout = 1000;
public static int LastError = 0;
private void CreateSocket()
{
TCPSocket = new StreamSocket();
TCPSocket.Control.NoDelay = true;
_Connected = false;
}
public MsgSocket()
{
}
public void Close()
{
if (Reader != null)
{
Reader.Dispose();
Reader = null;
}
if (Writer != null)
{
Writer.Dispose();
Writer = null;
}
if (TCPSocket != null)
{
TCPSocket.Dispose();
TCPSocket = null;
}
_Connected = false;
}
private async Task AsConnect(string Host, string port, CancellationTokenSource cts)
{
HostName ServerHost = new HostName(Host);
try
{
await TCPSocket.ConnectAsync(ServerHost, port).AsTask(cts.Token);
_Connected = true;
}
catch (TaskCanceledException)
{
LastError = S7Consts.errTCPConnectionTimeout;
}
catch
{
LastError = S7Consts.errTCPConnectionFailed; // Maybe unreachable peer
}
}
public int Connect(string Host, int Port)
{
LastError = 0;
if (!Connected)
{
CreateSocket();
CancellationTokenSource cts = new CancellationTokenSource();
try
{
try
{
cts.CancelAfter(_ConnectTimeout);
Task.WaitAny(Task.Run(async () => await AsConnect(Host, Port.ToString(), cts)));
}
catch
{
LastError = S7Consts.errTCPConnectionFailed;
}
}
finally
{
if (cts != null)
{
try
{
cts.Cancel();
cts.Dispose();
cts = null;
}
catch { }
}
}
if (LastError == 0)
{
Reader = new DataReader(TCPSocket.InputStream);
Reader.InputStreamOptions = InputStreamOptions.Partial;
Writer = new DataWriter(TCPSocket.OutputStream);
_Connected = true;
}
else
Close();
}
return LastError;
}
private async Task AsReadBuffer(byte[] Buffer, int Size, CancellationTokenSource cts)
{
try
{
await Reader.LoadAsync((uint)Size).AsTask(cts.Token);
Reader.ReadBytes(Buffer);
}
catch
{
LastError = S7Consts.errTCPDataReceive;
}
}
public int Receive(byte[] Buffer, int Start, int Size)
{
byte[] InBuffer = new byte[Size];
CancellationTokenSource cts = new CancellationTokenSource();
LastError = 0;
try
{
try
{
cts.CancelAfter(_ReadTimeout);
Task.WaitAny(Task.Run(async () => await AsReadBuffer(InBuffer, Size, cts)));
}
catch
{
LastError = S7Consts.errTCPDataReceive;
}
}
finally
{
if (cts != null)
{
try
{
cts.Cancel();
cts.Dispose();
cts = null;
}
catch { }
}
}
if (LastError == 0)
Array.Copy(InBuffer, 0, Buffer, Start, Size);
else
Close();
return LastError;
}
private async Task WriteBuffer(byte[] Buffer, CancellationTokenSource cts)
{
try
{
Writer.WriteBytes(Buffer);
await Writer.StoreAsync().AsTask(cts.Token);
}
catch
{
LastError = S7Consts.errTCPDataSend;
}
}
public int Send(byte[] Buffer, int Size)
{
byte[] OutBuffer = new byte[Size];
CancellationTokenSource cts = new CancellationTokenSource();
Array.Copy(Buffer, 0, OutBuffer, 0, Size);
LastError = 0;
try
{
try
{
cts.CancelAfter(_WriteTimeout);
Task.WaitAny(Task.Run(async () => await WriteBuffer(OutBuffer, cts)));
}
catch
{
LastError = S7Consts.errTCPDataSend;
}
}
finally
{
if (cts != null)
{
try
{
cts.Cancel();
cts.Dispose();
cts = null;
}
catch { }
}
}
if (LastError != 0)
Close();
return LastError;
}
~MsgSocket()
{
Close();
}
public bool Connected
{
get
{
return (TCPSocket != null) && _Connected;
}
}
public int ReadTimeout
{
get
{
return _ReadTimeout;
}
set
{
_ReadTimeout = value;
}
}
public int WriteTimeout
{
get
{
return _WriteTimeout;
}
set
{
_WriteTimeout = value;
}
}
public int ConnectTimeout
{
get
{
return _ConnectTimeout;
}
set
{
_ConnectTimeout = value;
}
}
}
#endif
#endregion
#region [Sync Sockets Win32/Win64 Desktop Application]
#if !WINDOWS_UWP && !NETFX_CORE
class MsgSocket
{
private Socket TCPSocket;
private int _ReadTimeout = 2000;
private int _WriteTimeout = 2000;
private int _ConnectTimeout = 1000;
public int LastError = 0;
public MsgSocket()
{
}
~MsgSocket()
{
Close();
}
public void Close()
{
if (TCPSocket != null)
{
TCPSocket.Dispose();
TCPSocket = null;
}
}
private void CreateSocket()
{
TCPSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
TCPSocket.NoDelay = true;
}
private void TCPPing(string Host, int Port)
{
// To Ping the PLC an Asynchronous socket is used rather then an ICMP packet.
// This allows the use also across Internet and Firewalls (obviously the port must be opened)
LastError = 0;
Socket PingSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
IAsyncResult result = PingSocket.BeginConnect(Host, Port, null, null);
bool success = result.AsyncWaitHandle.WaitOne(_ConnectTimeout, true);
if (!success)
{
LastError = S7Consts.errTCPConnectionFailed;
}
}
catch
{
LastError = S7Consts.errTCPConnectionFailed;
};
PingSocket.Close();
}
public int Connect(string Host, int Port)
{
LastError = 0;
if (!Connected)
{
TCPPing(Host, Port);
if (LastError == 0)
try
{
CreateSocket();
TCPSocket.Connect(Host, Port);
}
catch
{
LastError = S7Consts.errTCPConnectionFailed;
}
}
return LastError;
}
private int WaitForData(int Size, int Timeout)
{
bool Expired = false;
int SizeAvail;
int Elapsed = Environment.TickCount;
LastError = 0;
try
{
SizeAvail = TCPSocket.Available;
while ((SizeAvail < Size) && (!Expired))
{
Thread.Sleep(2);
SizeAvail = TCPSocket.Available;
Expired = Environment.TickCount - Elapsed > Timeout;
// If timeout we clean the buffer
if (Expired && (SizeAvail > 0))
try
{
byte[] Flush = new byte[SizeAvail];
TCPSocket.Receive(Flush, 0, SizeAvail, SocketFlags.None);
}
catch { }
}
}
catch
{
LastError = S7Consts.errTCPDataReceive;
}
if (Expired)
{
LastError = S7Consts.errTCPDataReceive;
}
return LastError;
}
public int Receive(byte[] Buffer, int Start, int Size)
{
int BytesRead = 0;
LastError = WaitForData(Size, _ReadTimeout);
if (LastError == 0)
{
try
{
BytesRead = TCPSocket.Receive(Buffer, Start, Size, SocketFlags.None);
}
catch
{
LastError = S7Consts.errTCPDataReceive;
}
if (BytesRead == 0) // Connection Reset by the peer
{
LastError = S7Consts.errTCPDataReceive;
Close();
}
}
return LastError;
}
public int Send(byte[] Buffer, int Size)
{
LastError = 0;
try
{
int BytesSent = TCPSocket.Send(Buffer, Size, SocketFlags.None);
}
catch
{
LastError = S7Consts.errTCPDataSend;
Close();
}
return LastError;
}
public bool Connected
{
get
{
return (TCPSocket != null) && (TCPSocket.Connected);
}
}
public int ReadTimeout
{
get
{
return _ReadTimeout;
}
set
{
_ReadTimeout = value;
}
}
public int WriteTimeout
{
get
{
return _WriteTimeout;
}
set
{
_WriteTimeout = value;
}
}
public int ConnectTimeout
{
get
{
return _ConnectTimeout;
}
set
{
_ConnectTimeout = value;
}
}
}
#endif
#endregion
public static class S7Consts
{
#region [Exported Consts]
// Error codes
//------------------------------------------------------------------------------
// ERRORS
//------------------------------------------------------------------------------
public const int errTCPSocketCreation = 0x00000001;
public const int errTCPConnectionTimeout = 0x00000002;
public const int errTCPConnectionFailed = 0x00000003;
public const int errTCPReceiveTimeout = 0x00000004;
public const int errTCPDataReceive = 0x00000005;
public const int errTCPSendTimeout = 0x00000006;
public const int errTCPDataSend = 0x00000007;
public const int errTCPConnectionReset = 0x00000008;
public const int errTCPNotConnected = 0x00000009;
public const int errTCPUnreachableHost = 0x00002751;
public const int errIsoConnect = 0x00010000; // Connection error
public const int errIsoInvalidPDU = 0x00030000; // Bad format
public const int errIsoInvalidDataSize = 0x00040000; // Bad Datasize passed to send/recv : buffer is invalid
public const int errCliNegotiatingPDU = 0x00100000;
public const int errCliInvalidParams = 0x00200000;
public const int errCliJobPending = 0x00300000;
public const int errCliTooManyItems = 0x00400000;
public const int errCliInvalidWordLen = 0x00500000;
public const int errCliPartialDataWritten = 0x00600000;
public const int errCliSizeOverPDU = 0x00700000;
public const int errCliInvalidPlcAnswer = 0x00800000;
public const int errCliAddressOutOfRange = 0x00900000;
public const int errCliInvalidTransportSize = 0x00A00000;
public const int errCliWriteDataSizeMismatch = 0x00B00000;
public const int errCliItemNotAvailable = 0x00C00000;
public const int errCliInvalidValue = 0x00D00000;
public const int errCliCannotStartPLC = 0x00E00000;
public const int errCliAlreadyRun = 0x00F00000;
public const int errCliCannotStopPLC = 0x01000000;
public const int errCliCannotCopyRamToRom = 0x01100000;
public const int errCliCannotCompress = 0x01200000;
public const int errCliAlreadyStop = 0x01300000;
public const int errCliFunNotAvailable = 0x01400000;
public const int errCliUploadSequenceFailed = 0x01500000;
public const int errCliInvalidDataSizeRecvd = 0x01600000;
public const int errCliInvalidBlockType = 0x01700000;
public const int errCliInvalidBlockNumber = 0x01800000;
public const int errCliInvalidBlockSize = 0x01900000;
public const int errCliNeedPassword = 0x01D00000;
public const int errCliInvalidPassword = 0x01E00000;
public const int errCliNoPasswordToSetOrClear = 0x01F00000;
public const int errCliJobTimeout = 0x02000000;
public const int errCliPartialDataRead = 0x02100000;
public const int errCliBufferTooSmall = 0x02200000;
public const int errCliFunctionRefused = 0x02300000;
public const int errCliDestroying = 0x02400000;
public const int errCliInvalidParamNumber = 0x02500000;
public const int errCliCannotChangeParam = 0x02600000;
public const int errCliFunctionNotImplemented = 0x02700000;
//------------------------------------------------------------------------------
// PARAMS LIST FOR COMPATIBILITY WITH Snap7.net.cs
//------------------------------------------------------------------------------
public const Int32 p_u16_LocalPort = 1; // Not applicable here
public const Int32 p_u16_RemotePort = 2;
public const Int32 p_i32_PingTimeout = 3;
public const Int32 p_i32_SendTimeout = 4;
public const Int32 p_i32_RecvTimeout = 5;
public const Int32 p_i32_WorkInterval = 6; // Not applicable here
public const Int32 p_u16_SrcRef = 7; // Not applicable here
public const Int32 p_u16_DstRef = 8; // Not applicable here
public const Int32 p_u16_SrcTSap = 9; // Not applicable here
public const Int32 p_i32_PDURequest = 10;
public const Int32 p_i32_MaxClients = 11; // Not applicable here
public const Int32 p_i32_BSendTimeout = 12; // Not applicable here
public const Int32 p_i32_BRecvTimeout = 13; // Not applicable here
public const Int32 p_u32_RecoveryTime = 14; // Not applicable here
public const Int32 p_u32_KeepAliveTime = 15; // Not applicable here
// Area ID
public const byte S7AreaPE = 0x81;
public const byte S7AreaPA = 0x82;
public const byte S7AreaMK = 0x83;
public const byte S7AreaDB = 0x84;
public const byte S7AreaCT = 0x1C;
public const byte S7AreaTM = 0x1D;
// Word Length
public const int S7WLBit = 0x01;
public const int S7WLByte = 0x02;
public const int S7WLChar = 0x03;
public const int S7WLWord = 0x04;
public const int S7WLInt = 0x05;
public const int S7WLDWord = 0x06;
public const int S7WLDInt = 0x07;
public const int S7WLReal = 0x08;
public const int S7WLCounter = 0x1C;
public const int S7WLTimer = 0x1D;
// PLC Status
public const int S7CpuStatusUnknown = 0x00;
public const int S7CpuStatusRun = 0x08;
public const int S7CpuStatusStop = 0x04;
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct S7Tag
{
public Int32 Area;
public Int32 DBNumber;
public Int32 Start;
public Int32 Elements;
public Int32 WordLen;
}
#endregion
}
public static class S7
{
#region [Help Functions]
private static Int64 bias = 621355968000000000; // "decimicros" between 0001-01-01 00:00:00 and 1970-01-01 00:00:00
private static int BCDtoByte(byte B)
{
return ((B >> 4) * 10) + (B & 0x0F);
}
private static byte ByteToBCD(int Value)
{
return (byte)(((Value / 10) << 4) | (Value % 10));
}
private static byte[] CopyFrom(byte[] Buffer, int Pos, int Size)
{
byte[] Result=new byte[Size];
Array.Copy(Buffer, Pos, Result, 0, Size);
return Result;
}
public static int DataSizeByte(int WordLength)
{
switch (WordLength)
{
case S7Consts.S7WLBit: return 1; // S7 sends 1 byte per bit
case S7Consts.S7WLByte: return 1;
case S7Consts.S7WLChar: return 1;
case S7Consts.S7WLWord: return 2;
case S7Consts.S7WLDWord: return 4;
case S7Consts.S7WLInt: return 2;
case S7Consts.S7WLDInt: return 4;
case S7Consts.S7WLReal: return 4;
case S7Consts.S7WLCounter: return 2;
case S7Consts.S7WLTimer: return 2;
default: return 0;
}
}
#region Get/Set the bit at Pos.Bit
public static bool GetBitAt(byte[] Buffer, int Pos, int Bit)
{
byte[] Mask = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
if (Bit < 0) Bit = 0;
if (Bit > 7) Bit = 7;
return (Buffer[Pos] & Mask[Bit]) != 0;
}
public static void SetBitAt(ref byte[] Buffer, int Pos, int Bit, bool Value)
{
byte[] Mask = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
if (Bit < 0) Bit = 0;
if (Bit > 7) Bit = 7;
if (Value)
Buffer[Pos] = (byte)(Buffer[Pos] | Mask[Bit]);
else
Buffer[Pos] = (byte)(Buffer[Pos] & ~Mask[Bit]);
}
#endregion
#region Get/Set 8 bit signed value (S7 SInt) -128..127
public static int GetSIntAt(byte[] Buffer, int Pos)
{
int Value = Buffer[Pos];
if (Value < 128)
return Value;
else
return (int) (Value - 256);
}
public static void SetSIntAt(byte[] Buffer, int Pos, int Value)
{
if (Value < -128) Value = -128;
if (Value > 127) Value = 127;
Buffer[Pos] = (byte)Value;
}
#endregion
#region Get/Set 16 bit signed value (S7 int) -32768..32767
public static int GetIntAt(byte[] Buffer, int Pos)
{
return (int)((Buffer[Pos] << 8) | Buffer[Pos + 1]);
}
public static void SetIntAt(byte[] Buffer, int Pos, Int16 Value)
{
Buffer[Pos] = (byte)(Value >> 8);
Buffer[Pos + 1] = (byte)(Value & 0x00FF);
}
#endregion
#region Get/Set 32 bit signed value (S7 DInt) -2147483648..2147483647
public static int GetDIntAt(byte[] Buffer, int Pos)
{
int Result;
Result = Buffer[Pos]; Result <<= 8;
Result += Buffer[Pos + 1]; Result <<= 8;
Result += Buffer[Pos + 2]; Result <<= 8;
Result += Buffer[Pos + 3];
return Result;
}
public static void SetDIntAt(byte[] Buffer, int Pos, int Value)
{
Buffer[Pos + 3] = (byte)(Value & 0xFF);
Buffer[Pos + 2] = (byte)((Value >> 8) & 0xFF);
Buffer[Pos + 1] = (byte)((Value >> 16) & 0xFF);
Buffer[Pos] = (byte)((Value >> 24) & 0xFF);
}
#endregion
#region Get/Set 64 bit signed value (S7 LInt) -9223372036854775808..9223372036854775807
public static Int64 GetLIntAt(byte[] Buffer, int Pos)
{
Int64 Result;
Result = Buffer[Pos]; Result <<= 8;
Result += Buffer[Pos + 1]; Result <<= 8;
Result += Buffer[Pos + 2]; Result <<= 8;
Result += Buffer[Pos + 3]; Result <<= 8;
Result += Buffer[Pos + 4]; Result <<= 8;
Result += Buffer[Pos + 5]; Result <<= 8;
Result += Buffer[Pos + 6]; Result <<= 8;
Result += Buffer[Pos + 7];
return Result;
}
public static void SetLIntAt(byte[] Buffer, int Pos, Int64 Value)
{
Buffer[Pos + 7] = (byte)(Value & 0xFF);
Buffer[Pos + 6] = (byte)((Value >> 8) & 0xFF);
Buffer[Pos + 5] = (byte)((Value >> 16) & 0xFF);
Buffer[Pos + 4] = (byte)((Value >> 24) & 0xFF);
Buffer[Pos + 3] = (byte)((Value >> 32) & 0xFF);
Buffer[Pos + 2] = (byte)((Value >> 40) & 0xFF);
Buffer[Pos + 1] = (byte)((Value >> 48) & 0xFF);
Buffer[Pos] = (byte)((Value >> 56) & 0xFF);
}
#endregion
#region Get/Set 8 bit unsigned value (S7 USInt) 0..255
public static byte GetUSIntAt(byte[] Buffer, int Pos)
{
return Buffer[Pos];
}
public static void SetUSIntAt(byte[] Buffer, int Pos, byte Value)
{
Buffer[Pos] = Value;
}
#endregion
#region Get/Set 16 bit unsigned value (S7 UInt) 0..65535
public static UInt16 GetUIntAt(byte[] Buffer, int Pos)
{
return (UInt16)((Buffer[Pos] << 8) | Buffer[Pos + 1]);
}
public static void SetUIntAt(byte[] Buffer, int Pos, UInt16 Value)
{
Buffer[Pos] = (byte)(Value >> 8);
Buffer[Pos + 1] = (byte)(Value & 0x00FF);
}
#endregion
#region Get/Set 32 bit unsigned value (S7 UDInt) 0..4294967296
public static UInt32 GetUDIntAt(byte[] Buffer, int Pos)
{
UInt32 Result;
Result = Buffer[Pos]; Result <<= 8;
Result |= Buffer[Pos + 1]; Result <<= 8;
Result |= Buffer[Pos + 2]; Result <<= 8;
Result |= Buffer[Pos + 3];
return Result;
}
public static void SetUDIntAt(byte[] Buffer, int Pos, UInt32 Value)
{
Buffer[Pos + 3] = (byte)(Value & 0xFF);
Buffer[Pos + 2] = (byte)((Value >> 8) & 0xFF);
Buffer[Pos + 1] = (byte)((Value >> 16) & 0xFF);
Buffer[Pos] = (byte)((Value >> 24) & 0xFF);
}
#endregion
#region Get/Set 64 bit unsigned value (S7 ULint) 0..18446744073709551616
public static UInt64 GetULIntAt(byte[] Buffer, int Pos)
{
UInt64 Result;
Result = Buffer[Pos]; Result <<= 8;
Result |= Buffer[Pos + 1]; Result <<= 8;
Result |= Buffer[Pos + 2]; Result <<= 8;
Result |= Buffer[Pos + 3]; Result <<= 8;
Result |= Buffer[Pos + 4]; Result <<= 8;
Result |= Buffer[Pos + 5]; Result <<= 8;
Result |= Buffer[Pos + 6]; Result <<= 8;
Result |= Buffer[Pos + 7];
return Result;
}
public static void SetULintAt(byte[] Buffer, int Pos, UInt64 Value)
{
Buffer[Pos + 7] = (byte)(Value & 0xFF);
Buffer[Pos + 6] = (byte)((Value >> 8) & 0xFF);
Buffer[Pos + 5] = (byte)((Value >> 16) & 0xFF);
Buffer[Pos + 4] = (byte)((Value >> 24) & 0xFF);
Buffer[Pos + 3] = (byte)((Value >> 32) & 0xFF);
Buffer[Pos + 2] = (byte)((Value >> 40) & 0xFF);
Buffer[Pos + 1] = (byte)((Value >> 48) & 0xFF);
Buffer[Pos] = (byte)((Value >> 56) & 0xFF);
}
#endregion
#region Get/Set 8 bit word (S7 Byte) 16#00..16#FF
public static byte GetByteAt(byte[] Buffer, int Pos)
{
return Buffer[Pos];
}
public static void SetByteAt(byte[] Buffer, int Pos, byte Value)
{
Buffer[Pos] = Value;
}
#endregion
#region Get/Set 16 bit word (S7 Word) 16#0000..16#FFFF
public static UInt16 GetWordAt(byte[] Buffer, int Pos)
{
return GetUIntAt(Buffer,Pos);
}
public static void SetWordAt(byte[] Buffer, int Pos, UInt16 Value)
{
SetUIntAt(Buffer, Pos, Value);
}
#endregion
#region Get/Set 32 bit word (S7 DWord) 16#00000000..16#FFFFFFFF
public static UInt32 GetDWordAt(byte[] Buffer, int Pos)
{
return GetUDIntAt(Buffer, Pos);
}
public static void SetDWordAt(byte[] Buffer, int Pos, UInt32 Value)
{
SetUDIntAt(Buffer, Pos, Value);
}
#endregion
#region Get/Set 64 bit word (S7 LWord) 16#0000000000000000..16#FFFFFFFFFFFFFFFF
public static UInt64 GetLWordAt(byte[] Buffer, int Pos)
{
return GetULIntAt(Buffer, Pos);
}
public static void SetLWordAt(byte[] Buffer, int Pos, UInt64 Value)
{
SetULintAt(Buffer, Pos, Value);
}
#endregion
#region Get/Set 32 bit floating point number (S7 Real) (Range of Single)
public static Single GetRealAt(byte[] Buffer, int Pos)
{
UInt32 Value = GetUDIntAt(Buffer, Pos);
byte[] bytes = BitConverter.GetBytes(Value);
return BitConverter.ToSingle(bytes, 0);
}
public static void SetRealAt(byte[] Buffer, int Pos, Single Value)
{
byte[] FloatArray = BitConverter.GetBytes(Value);
Buffer[Pos] = FloatArray[3];
Buffer[Pos + 1] = FloatArray[2];
Buffer[Pos + 2] = FloatArray[1];
Buffer[Pos + 3] = FloatArray[0];
}
#endregion
#region Get/Set 64 bit floating point number (S7 LReal) (Range of Double)
public static Double GetLRealAt(byte[] Buffer, int Pos)
{
UInt64 Value = GetULIntAt(Buffer, Pos);
byte[] bytes = BitConverter.GetBytes(Value);
return BitConverter.ToDouble(bytes, 0);
}
public static void SetLRealAt(byte[] Buffer, int Pos, Double Value)
{
byte[] FloatArray = BitConverter.GetBytes(Value);
Buffer[Pos] = FloatArray[7];
Buffer[Pos + 1] = FloatArray[6];
Buffer[Pos + 2] = FloatArray[5];
Buffer[Pos + 3] = FloatArray[4];
Buffer[Pos + 4] = FloatArray[3];
Buffer[Pos + 5] = FloatArray[2];
Buffer[Pos + 6] = FloatArray[1];
Buffer[Pos + 7] = FloatArray[0];
}
#endregion
#region Get/Set DateTime (S7 DATE_AND_TIME)
public static DateTime GetDateTimeAt(byte[] Buffer, int Pos)
{
int Year, Month, Day, Hour, Min, Sec, MSec;
Year = BCDtoByte(Buffer[Pos]);
if (Year < 90)
Year += 2000;
else
Year += 1900;
Month = BCDtoByte(Buffer[Pos + 1]);
Day = BCDtoByte(Buffer[Pos + 2]);
Hour = BCDtoByte(Buffer[Pos + 3]);
Min = BCDtoByte(Buffer[Pos + 4]);
Sec = BCDtoByte(Buffer[Pos + 5]);
MSec = (BCDtoByte(Buffer[Pos + 6]) * 10) + (BCDtoByte(Buffer[Pos + 7]) / 10);
try
{
return new DateTime(Year, Month, Day, Hour, Min, Sec, MSec);
}
catch (System.ArgumentOutOfRangeException)
{
return new DateTime(0);
}
}
public static void SetDateTimeAt(byte[] Buffer, int Pos, DateTime Value)
{
int Year = Value.Year;
int Month = Value.Month;
int Day = Value.Day;
int Hour = Value.Hour;
int Min = Value.Minute;
int Sec = Value.Second;
int Dow = (int)Value.DayOfWeek + 1;
// MSecH = First two digits of miliseconds
int MsecH = Value.Millisecond / 10;
// MSecL = Last digit of miliseconds
int MsecL = Value.Millisecond % 10;
if (Year > 1999)
Year -= 2000;
Buffer[Pos] = ByteToBCD(Year);
Buffer[Pos + 1] = ByteToBCD(Month);
Buffer[Pos + 2] = ByteToBCD(Day);
Buffer[Pos + 3] = ByteToBCD(Hour);
Buffer[Pos + 4] = ByteToBCD(Min);
Buffer[Pos + 5] = ByteToBCD(Sec);
Buffer[Pos + 6] = ByteToBCD(MsecH);
Buffer[Pos + 7] = ByteToBCD(MsecL * 10 + Dow);
}
#endregion
#region Get/Set DATE (S7 DATE)
public static DateTime GetDateAt(byte[] Buffer, int Pos)
{
try
{
return new DateTime(1990, 1, 1).AddDays(GetIntAt(Buffer, Pos));
}
catch (System.ArgumentOutOfRangeException)
{
return new DateTime(0);
}
}
public static void SetDateAt(byte[] Buffer, int Pos, DateTime Value)
{
SetIntAt(Buffer, Pos, (Int16)(Value - new DateTime(1990, 1, 1)).Days);
}
#endregion
#region Get/Set TOD (S7 TIME_OF_DAY)
public static DateTime GetTODAt(byte[] Buffer, int Pos)
{
try
{
return new DateTime(0).AddMilliseconds(S7.GetDIntAt(Buffer, Pos));
}
catch (System.ArgumentOutOfRangeException)
{
return new DateTime(0);
}
}
public static void SetTODAt(byte[] Buffer, int Pos, DateTime Value)
{
TimeSpan Time = Value.TimeOfDay;
SetDIntAt(Buffer, Pos, (Int32)Math.Round(Time.TotalMilliseconds));
}
#endregion
#region Get/Set LTOD (S7 1500 LONG TIME_OF_DAY)
public static DateTime GetLTODAt(byte[] Buffer, int Pos)
{
// .NET Tick = 100 ns, S71500 Tick = 1 ns
try
{
return new DateTime(Math.Abs(GetLIntAt(Buffer,Pos)/100));
}
catch (System.ArgumentOutOfRangeException)
{
return new DateTime(0);
}
}
public static void SetLTODAt(byte[] Buffer, int Pos, DateTime Value)
{
TimeSpan Time = Value.TimeOfDay;
SetLIntAt(Buffer, Pos, (Int64)Time.Ticks * 100);
}
#endregion
#region GET/SET LDT (S7 1500 Long Date and Time)
public static DateTime GetLDTAt(byte[] Buffer, int Pos)
{
try
{
return new DateTime((GetLIntAt(Buffer, Pos) / 100) + bias);
}
catch (System.ArgumentOutOfRangeException)
{
return new DateTime(0);
}
}
public static void SetLDTAt(byte[] Buffer, int Pos, DateTime Value)
{
SetLIntAt(Buffer, Pos, (Value.Ticks-bias) * 100);
}
#endregion
#region Get/Set DTL (S71200/1500 Date and Time)
// Thanks to Johan Cardoen for GetDTLAt
public static DateTime GetDTLAt(byte[] Buffer, int Pos)
{
int Year, Month, Day, Hour, Min, Sec, MSec;
Year = Buffer[Pos] * 256 + Buffer[Pos + 1];
Month = Buffer[Pos + 2];
Day = Buffer[Pos + 3];
Hour = Buffer[Pos + 5];
Min = Buffer[Pos + 6];
Sec = Buffer[Pos + 7];
MSec = (int)GetUDIntAt(Buffer, Pos + 8)/1000000;
try
{
return new DateTime(Year, Month, Day, Hour, Min, Sec, MSec);
}
catch (System.ArgumentOutOfRangeException)
{
return new DateTime(0);
}
}
public static void SetDTLAt(byte[] Buffer, int Pos, DateTime Value)
{
short Year = (short)Value.Year;
byte Month = (byte)Value.Month;
byte Day = (byte)Value.Day;
byte Hour = (byte)Value.Hour;
byte Min = (byte)Value.Minute;
byte Sec = (byte)Value.Second;
byte Dow = (byte)(Value.DayOfWeek + 1);
Int32 NanoSecs = Value.Millisecond * 1000000;
var bytes_short = BitConverter.GetBytes(Year);
Buffer[Pos] = bytes_short[1];
Buffer[Pos + 1] = bytes_short[0];
Buffer[Pos + 2] = Month;
Buffer[Pos + 3] = Day;
Buffer[Pos + 4] = Dow;
Buffer[Pos + 5] = Hour;
Buffer[Pos + 6] = Min;
Buffer[Pos + 7] = Sec;
SetDIntAt(Buffer, Pos + 8, NanoSecs);
}
#endregion
#region Get/Set String (S7 String)
// Thanks to Pablo Agirre
public static string GetStringAt(byte[] Buffer, int Pos)
{
int size = (int)Buffer[Pos + 1];
return Encoding.UTF8.GetString(Buffer, Pos + 2, size);
}
public static void SetStringAt(byte[] Buffer, int Pos, int MaxLen, string Value)
{
int size = Value.Length;
Buffer[Pos] = (byte)MaxLen;
Buffer[Pos + 1] = (byte)size;
Encoding.UTF8.GetBytes(Value, 0, size, Buffer, Pos + 2);
}
#endregion
#region Get/Set Array of char (S7 ARRAY OF CHARS)
public static string GetCharsAt(byte[] Buffer, int Pos, int Size)
{
return Encoding.UTF8.GetString(Buffer, Pos , Size);
}
public static void SetCharsAt(byte[] Buffer, int Pos, string Value)
{
int MaxLen = Buffer.Length - Pos;
// Truncs the string if there's no room enough
if (MaxLen > Value.Length) MaxLen = Value.Length;
Encoding.UTF8.GetBytes(Value, 0, MaxLen, Buffer, Pos);
}
#endregion
#region Get/Set Counter
public static int GetCounter(ushort Value)
{
return BCDtoByte((byte)Value) * 100 + BCDtoByte((byte)(Value >> 8));
}
public static int GetCounterAt(ushort[] Buffer, int Index)
{
return GetCounter(Buffer[Index]);
}
public static ushort ToCounter(int Value)
{
return (ushort)(ByteToBCD(Value / 100) + (ByteToBCD(Value % 100) << 8));
}
public static void SetCounterAt(ushort[] Buffer, int Pos, int Value)
{
Buffer[Pos] = ToCounter(Value);
}
#endregion
#endregion [Help Functions]
}
public class S7MultiVar
{
#region [MultiRead/Write Helper]
private S7Client FClient;
private GCHandle[] Handles = new GCHandle[S7Client.MaxVars];
private int Count = 0;
private S7Client.S7DataItem[] Items = new S7Client.S7DataItem[S7Client.MaxVars];
public int[] Results = new int[S7Client.MaxVars];
private bool AdjustWordLength(int Area, ref int WordLen, ref int Amount, ref int Start)
{
// Calc Word size
int WordSize = S7.DataSizeByte(WordLen);
if (WordSize == 0)
return false;
if (Area == S7Consts.S7AreaCT)
WordLen = S7Consts.S7WLCounter;
if (Area == S7Consts.S7AreaTM)
WordLen = S7Consts.S7WLTimer;
if (WordLen == S7Consts.S7WLBit)
Amount = 1; // Only 1 bit can be transferred at time
else
{
if ((WordLen != S7Consts.S7WLCounter) && (WordLen != S7Consts.S7WLTimer))
{
Amount = Amount * WordSize;
Start = Start * 8;
WordLen = S7Consts.S7WLByte;
}
}
return true;
}
public S7MultiVar(S7Client Client)
{
FClient = Client;
for (int c = 0; c < S7Client.MaxVars; c++)
Results[c] = (int)S7Consts.errCliItemNotAvailable;
}
~S7MultiVar()
{
Clear();
}
public bool Add<T>(S7Consts.S7Tag Tag, ref T[] Buffer, int Offset)
{
return Add(Tag.Area, Tag.WordLen, Tag.DBNumber, Tag.Start, Tag.Elements, ref Buffer, Offset);
}
public bool Add<T>(S7Consts.S7Tag Tag, ref T[] Buffer)
{
return Add(Tag.Area, Tag.WordLen, Tag.DBNumber, Tag.Start, Tag.Elements, ref Buffer);
}
public bool Add<T>(Int32 Area, Int32 WordLen, Int32 DBNumber, Int32 Start, Int32 Amount, ref T[] Buffer)
{
return Add(Area, WordLen, DBNumber, Start, Amount, ref Buffer, 0);
}
public bool Add<T>(Int32 Area, Int32 WordLen, Int32 DBNumber, Int32 Start, Int32 Amount, ref T[] Buffer, int Offset)
{
if (Count < S7Client.MaxVars)
{
if (AdjustWordLength(Area, ref WordLen, ref Amount, ref Start))
{
Items[Count].Area = Area;
Items[Count].WordLen = WordLen;
Items[Count].Result = (int)S7Consts.errCliItemNotAvailable;
Items[Count].DBNumber = DBNumber;
Items[Count].Start = Start;
Items[Count].Amount = Amount;
GCHandle handle = GCHandle.Alloc(Buffer, GCHandleType.Pinned);
#if WINDOWS_UWP || NETFX_CORE
if (IntPtr.Size == 4)
Items[Count].pData = (IntPtr)(handle.AddrOfPinnedObject().ToInt32() + Offset * Marshal.SizeOf<T>());
else
Items[Count].pData = (IntPtr)(handle.AddrOfPinnedObject().ToInt64() + Offset * Marshal.SizeOf<T>());
#else
if (IntPtr.Size == 4)
Items[Count].pData = (IntPtr)(handle.AddrOfPinnedObject().ToInt32() + Offset * Marshal.SizeOf(typeof(T)));
else
Items[Count].pData = (IntPtr)(handle.AddrOfPinnedObject().ToInt64() + Offset * Marshal.SizeOf(typeof(T)));
#endif
Handles[Count] = handle;
Count++;
return true;
}
else
return false;
}
else
return false;
}
public int Read()
{
int FunctionResult;
int GlobalResult = (int)S7Consts.errCliFunctionRefused;
try
{
if (Count > 0)
{
FunctionResult = FClient.ReadMultiVars(Items, Count);
if (FunctionResult == 0)
for (int c = 0; c < S7Client.MaxVars; c++)
Results[c] = Items[c].Result;
GlobalResult = FunctionResult;
}
else
GlobalResult = (int)S7Consts.errCliFunctionRefused;
}
finally
{
Clear(); // handles are no more needed and MUST be freed
}
return GlobalResult;
}
public int Write()
{
int FunctionResult;
int GlobalResult = (int)S7Consts.errCliFunctionRefused;
try
{
if (Count > 0)
{
FunctionResult = FClient.WriteMultiVars(Items, Count);
if (FunctionResult == 0)
for (int c = 0; c < S7Client.MaxVars; c++)
Results[c] = Items[c].Result;
GlobalResult = FunctionResult;
}
else
GlobalResult = (int)S7Consts.errCliFunctionRefused;
}
finally
{
Clear(); // handles are no more needed and MUST be freed
}
return GlobalResult;
}
public void Clear()
{
for (int c = 0; c < Count; c++)
{
if (Handles[c] != null)
Handles[c].Free();
}
Count = 0;
}
#endregion
}
public class S7Client
{
#region [Constants and TypeDefs]
// Block type
public const int Block_OB = 0x38;
public const int Block_DB = 0x41;
public const int Block_SDB = 0x42;
public const int Block_FC = 0x43;
public const int Block_SFC = 0x44;
public const int Block_FB = 0x45;
public const int Block_SFB = 0x46;
// Sub Block Type
public const byte SubBlk_OB = 0x08;
public const byte SubBlk_DB = 0x0A;
public const byte SubBlk_SDB = 0x0B;
public const byte SubBlk_FC = 0x0C;
public const byte SubBlk_SFC = 0x0D;
public const byte SubBlk_FB = 0x0E;
public const byte SubBlk_SFB = 0x0F;
// Block languages
public const byte BlockLangAWL = 0x01;
public const byte BlockLangKOP = 0x02;
public const byte BlockLangFUP = 0x03;
public const byte BlockLangSCL = 0x04;
public const byte BlockLangDB = 0x05;
public const byte BlockLangGRAPH = 0x06;
// Max number of vars (multiread/write)
public static readonly int MaxVars = 20;
// Result transport size
const byte TS_ResBit = 0x03;
const byte TS_ResByte = 0x04;
const byte TS_ResInt = 0x05;
const byte TS_ResReal = 0x07;
const byte TS_ResOctet = 0x09;
const ushort Code7Ok = 0x0000;
const ushort Code7AddressOutOfRange = 0x0005;
const ushort Code7InvalidTransportSize = 0x0006;
const ushort Code7WriteDataSizeMismatch = 0x0007;
const ushort Code7ResItemNotAvailable = 0x000A;
const ushort Code7ResItemNotAvailable1 = 0xD209;
const ushort Code7InvalidValue = 0xDC01;
const ushort Code7NeedPassword = 0xD241;
const ushort Code7InvalidPassword = 0xD602;
const ushort Code7NoPasswordToClear = 0xD604;
const ushort Code7NoPasswordToSet = 0xD605;
const ushort Code7FunNotAvailable = 0x8104;
const ushort Code7DataOverPDU = 0x8500;
// Client Connection Type
public static readonly UInt16 CONNTYPE_PG = 0x01; // Connect to the PLC as a PG
public static readonly UInt16 CONNTYPE_OP = 0x02; // Connect to the PLC as an OP
public static readonly UInt16 CONNTYPE_BASIC = 0x03; // Basic connection
public int _LastError = 0;
public struct S7DataItem
{
public int Area;
public int WordLen;
public int Result;
public int DBNumber;
public int Start;
public int Amount;
public IntPtr pData;
}
// Order Code + Version
public struct S7OrderCode
{
public string Code; // such as "6ES7 151-8AB01-0AB0"
public byte V1; // Version 1st digit
public byte V2; // Version 2nd digit
public byte V3; // Version 3th digit
};
// CPU Info
public struct S7CpuInfo
{
public string ModuleTypeName;
public string SerialNumber;
public string ASName;
public string Copyright;
public string ModuleName;
}
public struct S7CpInfo
{
public int MaxPduLength;
public int MaxConnections;
public int MaxMpiRate;
public int MaxBusRate;
};
// Block List
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct S7BlocksList
{
public Int32 OBCount;
public Int32 FBCount;
public Int32 FCCount;
public Int32 SFBCount;
public Int32 SFCCount;
public Int32 DBCount;
public Int32 SDBCount;
};
// Managed Block Info
public struct S7BlockInfo
{
public int BlkType;
public int BlkNumber;
public int BlkLang;
public int BlkFlags;
public int MC7Size; // The real size in bytes
public int LoadSize;
public int LocalData;
public int SBBLength;
public int CheckSum;
public int Version;
// Chars info
public string CodeDate;
public string IntfDate;
public string Author;
public string Family;
public string Header;
};
// See §33.1 of "System Software for S7-300/400 System and Standard Functions"
// and see SFC51 description too
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct SZL_HEADER
{
public UInt16 LENTHDR;
public UInt16 N_DR;
};
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct S7SZL
{
public SZL_HEADER Header;
[MarshalAs(UnmanagedType.ByValArray)]
public byte[] Data;
};
// SZL List of available SZL IDs : same as SZL but List items are big-endian adjusted
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct S7SZLList
{
public SZL_HEADER Header;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x2000 - 2)]
public UInt16[] Data;
};
// S7 Protection
// See §33.19 of "System Software for S7-300/400 System and Standard Functions"
public struct S7Protection
{
public ushort sch_schal;
public ushort sch_par;
public ushort sch_rel;
public ushort bart_sch;
public ushort anl_sch;
};
#endregion
#region [S7 Telegrams]
// ISO Connection Request telegram (contains also ISO Header and COTP Header)
byte[] ISO_CR = {
// TPKT (RFC1006 Header)
0x03, // RFC 1006 ID (3)
0x00, // Reserved, always 0
0x00, // High part of packet lenght (entire frame, payload and TPDU included)
0x16, // Low part of packet lenght (entire frame, payload and TPDU included)
// COTP (ISO 8073 Header)
0x11, // PDU Size Length
0xE0, // CR - Connection Request ID
0x00, // Dst Reference HI
0x00, // Dst Reference LO
0x00, // Src Reference HI
0x01, // Src Reference LO
0x00, // Class + Options Flags
0xC0, // PDU Max Length ID
0x01, // PDU Max Length HI
0x0A, // PDU Max Length LO
0xC1, // Src TSAP Identifier
0x02, // Src TSAP Length (2 bytes)
0x01, // Src TSAP HI (will be overwritten)
0x00, // Src TSAP LO (will be overwritten)
0xC2, // Dst TSAP Identifier
0x02, // Dst TSAP Length (2 bytes)
0x01, // Dst TSAP HI (will be overwritten)
0x02 // Dst TSAP LO (will be overwritten)
};
// TPKT + ISO COTP Header (Connection Oriented Transport Protocol)
byte[] TPKT_ISO = { // 7 bytes
0x03,0x00,
0x00,0x1f, // Telegram Length (Data Size + 31 or 35)
0x02,0xf0,0x80 // COTP (see above for info)
};
// S7 PDU Negotiation Telegram (contains also ISO Header and COTP Header)
byte[] S7_PN = {
0x03, 0x00, 0x00, 0x19,
0x02, 0xf0, 0x80, // TPKT + COTP (see above for info)
0x32, 0x01, 0x00, 0x00,
0x04, 0x00, 0x00, 0x08,
0x00, 0x00, 0xf0, 0x00,
0x00, 0x01, 0x00, 0x01,
0x00, 0x1e // PDU Length Requested = HI-LO Here Default 480 bytes
};
// S7 Read/Write Request Header (contains also ISO Header and COTP Header)
byte[] S7_RW = { // 31-35 bytes
0x03,0x00,
0x00,0x1f, // Telegram Length (Data Size + 31 or 35)
0x02,0xf0, 0x80, // COTP (see above for info)
0x32, // S7 Protocol ID
0x01, // Job Type
0x00,0x00, // Redundancy identification
0x05,0x00, // PDU Reference
0x00,0x0e, // Parameters Length
0x00,0x00, // Data Length = Size(bytes) + 4
0x04, // Function 4 Read Var, 5 Write Var
0x01, // Items count
0x12, // Var spec.
0x0a, // Length of remaining bytes
0x10, // Syntax ID
(byte)S7Consts.S7WLByte, // Transport Size idx=22
0x00,0x00, // Num Elements
0x00,0x00, // DB Number (if any, else 0)
0x84, // Area Type
0x00,0x00,0x00, // Area Offset
// WR area
0x00, // Reserved
0x04, // Transport size
0x00,0x00, // Data Length * 8 (if not bit or timer or counter)
};
private static int Size_RD = 31; // Header Size when Reading
private static int Size_WR = 35; // Header Size when Writing
// S7 Variable MultiRead Header
byte[] S7_MRD_HEADER = {
0x03,0x00,
0x00,0x1f, // Telegram Length
0x02,0xf0, 0x80, // COTP (see above for info)
0x32, // S7 Protocol ID
0x01, // Job Type
0x00,0x00, // Redundancy identification
0x05,0x00, // PDU Reference
0x00,0x0e, // Parameters Length
0x00,0x00, // Data Length = Size(bytes) + 4
0x04, // Function 4 Read Var, 5 Write Var
0x01 // Items count (idx 18)
};
// S7 Variable MultiRead Item
byte[] S7_MRD_ITEM = {
0x12, // Var spec.
0x0a, // Length of remaining bytes
0x10, // Syntax ID
(byte)S7Consts.S7WLByte, // Transport Size idx=3
0x00,0x00, // Num Elements
0x00,0x00, // DB Number (if any, else 0)
0x84, // Area Type
0x00,0x00,0x00 // Area Offset
};
// S7 Variable MultiWrite Header
byte[] S7_MWR_HEADER = {
0x03,0x00,
0x00,0x1f, // Telegram Length
0x02,0xf0, 0x80, // COTP (see above for info)
0x32, // S7 Protocol ID
0x01, // Job Type
0x00,0x00, // Redundancy identification
0x05,0x00, // PDU Reference
0x00,0x0e, // Parameters Length (idx 13)
0x00,0x00, // Data Length = Size(bytes) + 4 (idx 15)
0x05, // Function 5 Write Var
0x01 // Items count (idx 18)
};
// S7 Variable MultiWrite Item (Param)
byte[] S7_MWR_PARAM = {
0x12, // Var spec.
0x0a, // Length of remaining bytes
0x10, // Syntax ID
(byte)S7Consts.S7WLByte, // Transport Size idx=3
0x00,0x00, // Num Elements
0x00,0x00, // DB Number (if any, else 0)
0x84, // Area Type
0x00,0x00,0x00, // Area Offset
};
// SZL First telegram request
byte[] S7_SZL_FIRST = {
0x03, 0x00, 0x00, 0x21,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00,
0x05, 0x00, // Sequence out
0x00, 0x08, 0x00,
0x08, 0x00, 0x01, 0x12,
0x04, 0x11, 0x44, 0x01,
0x00, 0xff, 0x09, 0x00,
0x04,
0x00, 0x00, // ID (29)
0x00, 0x00 // Index (31)
};
// SZL Next telegram request
byte[] S7_SZL_NEXT = {
0x03, 0x00, 0x00, 0x21,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00, 0x06,
0x00, 0x00, 0x0c, 0x00,
0x04, 0x00, 0x01, 0x12,
0x08, 0x12, 0x44, 0x01,
0x01, // Sequence
0x00, 0x00, 0x00, 0x00,
0x0a, 0x00, 0x00, 0x00
};
// Get Date/Time request
byte[] S7_GET_DT = {
0x03, 0x00, 0x00, 0x1d,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00, 0x38,
0x00, 0x00, 0x08, 0x00,
0x04, 0x00, 0x01, 0x12,
0x04, 0x11, 0x47, 0x01,
0x00, 0x0a, 0x00, 0x00,
0x00
};
// Set Date/Time command
byte[] S7_SET_DT = {
0x03, 0x00, 0x00, 0x27,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00, 0x89,
0x03, 0x00, 0x08, 0x00,
0x0e, 0x00, 0x01, 0x12,
0x04, 0x11, 0x47, 0x02,
0x00, 0xff, 0x09, 0x00,
0x0a, 0x00,
0x19, // Hi part of Year (idx=30)
0x13, // Lo part of Year
0x12, // Month
0x06, // Day
0x17, // Hour
0x37, // Min
0x13, // Sec
0x00, 0x01 // ms + Day of week
};
// S7 Set Session Password
byte[] S7_SET_PWD = {
0x03, 0x00, 0x00, 0x25,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00, 0x27,
0x00, 0x00, 0x08, 0x00,
0x0c, 0x00, 0x01, 0x12,
0x04, 0x11, 0x45, 0x01,
0x00, 0xff, 0x09, 0x00,
0x08,
// 8 Char Encoded Password
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00
};
// S7 Clear Session Password
byte[] S7_CLR_PWD = {
0x03, 0x00, 0x00, 0x1d,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00, 0x29,
0x00, 0x00, 0x08, 0x00,
0x04, 0x00, 0x01, 0x12,
0x04, 0x11, 0x45, 0x02,
0x00, 0x0a, 0x00, 0x00,
0x00
};
// S7 STOP request
byte[] S7_STOP = {
0x03, 0x00, 0x00, 0x21,
0x02, 0xf0, 0x80, 0x32,
0x01, 0x00, 0x00, 0x0e,
0x00, 0x00, 0x10, 0x00,
0x00, 0x29, 0x00, 0x00,
0x00, 0x00, 0x00, 0x09,
0x50, 0x5f, 0x50, 0x52,
0x4f, 0x47, 0x52, 0x41,
0x4d
};
// S7 HOT Start request
byte[] S7_HOT_START = {
0x03, 0x00, 0x00, 0x25,
0x02, 0xf0, 0x80, 0x32,
0x01, 0x00, 0x00, 0x0c,
0x00, 0x00, 0x14, 0x00,
0x00, 0x28, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0xfd, 0x00, 0x00, 0x09,
0x50, 0x5f, 0x50, 0x52,
0x4f, 0x47, 0x52, 0x41,
0x4d
};
// S7 COLD Start request
byte[] S7_COLD_START = {
0x03, 0x00, 0x00, 0x27,
0x02, 0xf0, 0x80, 0x32,
0x01, 0x00, 0x00, 0x0f,
0x00, 0x00, 0x16, 0x00,
0x00, 0x28, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0xfd, 0x00, 0x02, 0x43,
0x20, 0x09, 0x50, 0x5f,
0x50, 0x52, 0x4f, 0x47,
0x52, 0x41, 0x4d
};
const byte pduStart = 0x28; // CPU start
const byte pduStop = 0x29; // CPU stop
const byte pduAlreadyStarted = 0x02; // CPU already in run mode
const byte pduAlreadyStopped = 0x07; // CPU already in stop mode
// S7 Get PLC Status
byte[] S7_GET_STAT = {
0x03, 0x00, 0x00, 0x21,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00, 0x2c,
0x00, 0x00, 0x08, 0x00,
0x08, 0x00, 0x01, 0x12,
0x04, 0x11, 0x44, 0x01,
0x00, 0xff, 0x09, 0x00,
0x04, 0x04, 0x24, 0x00,
0x00
};
// S7 Get Block Info Request Header (contains also ISO Header and COTP Header)
byte[] S7_BI = {
0x03, 0x00, 0x00, 0x25,
0x02, 0xf0, 0x80, 0x32,
0x07, 0x00, 0x00, 0x05,
0x00, 0x00, 0x08, 0x00,
0x0c, 0x00, 0x01, 0x12,
0x04, 0x11, 0x43, 0x03,
0x00, 0xff, 0x09, 0x00,
0x08, 0x30,
0x41, // Block Type
0x30, 0x30, 0x30, 0x30, 0x30, // ASCII Block Number
0x41
};
#endregion
#region [Internals]
// Defaults
private static int ISOTCP = 102; // ISOTCP Port
private static int MinPduSize = 16;
private static int MinPduSizeToRequest = 240;
private static int MaxPduSizeToRequest = 960;
private static int DefaultTimeout = 2000;
private static int IsoHSize = 7; // TPKT+COTP Header Size
// Properties
private int _PDULength = 0;
private int _PduSizeRequested = 480;
private int _PLCPort = ISOTCP;
private int _RecvTimeout = DefaultTimeout;
private int _SendTimeout = DefaultTimeout;
private int _ConnTimeout = DefaultTimeout;
// Privates
private string IPAddress;
private byte LocalTSAP_HI;
private byte LocalTSAP_LO;
private byte RemoteTSAP_HI;
private byte RemoteTSAP_LO;
private byte LastPDUType;
private ushort ConnType = CONNTYPE_PG;
private byte[] PDU = new byte[2048];
private MsgSocket Socket = null;
private int Time_ms = 0;
private void CreateSocket()
{
try
{
Socket = new MsgSocket();
Socket.ConnectTimeout = _ConnTimeout;
Socket.ReadTimeout = _RecvTimeout;
Socket.WriteTimeout = _SendTimeout;
}
catch
{
}
}
private int TCPConnect()
{
if (_LastError==0)
try
{
_LastError=Socket.Connect(IPAddress, _PLCPort);
}
catch
{
_LastError = S7Consts.errTCPConnectionFailed;
}
return _LastError;
}
private void RecvPacket(byte[] Buffer, int Start, int Size)
{
if (Connected)
_LastError = Socket.Receive(Buffer, Start, Size);
else
_LastError = S7Consts.errTCPNotConnected;
}
private void SendPacket(byte[] Buffer, int Len)
{
_LastError = Socket.Send(Buffer, Len);
}
private void SendPacket(byte[] Buffer)
{
if (Connected)
SendPacket(Buffer, Buffer.Length);
else
_LastError = S7Consts.errTCPNotConnected;
}
private int RecvIsoPacket()
{
Boolean Done = false;
int Size = 0;
while ((_LastError == 0) && !Done)
{
// Get TPKT (4 bytes)
RecvPacket(PDU, 0, 4);
if (_LastError == 0)
{
Size = S7.GetWordAt(PDU, 2);
// Check 0 bytes Data Packet (only TPKT+COTP = 7 bytes)
if (Size == IsoHSize)
RecvPacket(PDU, 4, 3); // Skip remaining 3 bytes and Done is still false
else
{
if ((Size > _PduSizeRequested + IsoHSize) || (Size < MinPduSize))
_LastError = S7Consts.errIsoInvalidPDU;
else
Done = true; // a valid Length !=7 && >16 && <247
}
}
}
if (_LastError == 0)
{
RecvPacket(PDU, 4, 3); // Skip remaining 3 COTP bytes
LastPDUType = PDU[5]; // Stores PDU Type, we need it
// Receives the S7 Payload
RecvPacket(PDU, 7, Size - IsoHSize);
}
if (_LastError == 0)
return Size;
else
return 0;
}
private int ISOConnect()
{
int Size;
ISO_CR[16] = LocalTSAP_HI;
ISO_CR[17] = LocalTSAP_LO;
ISO_CR[20] = RemoteTSAP_HI;
ISO_CR[21] = RemoteTSAP_LO;
// Sends the connection request telegram
SendPacket(ISO_CR);
if (_LastError == 0)
{
// Gets the reply (if any)
Size = RecvIsoPacket();
if (_LastError == 0)
{
if (Size == 22)
{
if (LastPDUType != (byte)0xD0) // 0xD0 = CC Connection confirm
_LastError = S7Consts.errIsoConnect;
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
}
return _LastError;
}
private int NegotiatePduLength()
{
int Length;
// Set PDU Size Requested
S7.SetWordAt(S7_PN, 23, (ushort)_PduSizeRequested);
// Sends the connection request telegram
SendPacket(S7_PN);
if (_LastError == 0)
{
Length = RecvIsoPacket();
if (_LastError == 0)
{
// check S7 Error
if ((Length == 27) && (PDU[17] == 0) && (PDU[18] == 0)) // 20 = size of Negotiate Answer
{
// Get PDU Size Negotiated
_PDULength = S7.GetWordAt(PDU, 25);
if (_PDULength <= 0)
_LastError = S7Consts.errCliNegotiatingPDU;
}
else
_LastError = S7Consts.errCliNegotiatingPDU;
}
}
return _LastError;
}
private int CpuError(ushort Error)
{
switch(Error)
{
case 0 : return 0;
case Code7AddressOutOfRange : return S7Consts.errCliAddressOutOfRange;
case Code7InvalidTransportSize : return S7Consts.errCliInvalidTransportSize;
case Code7WriteDataSizeMismatch : return S7Consts.errCliWriteDataSizeMismatch;
case Code7ResItemNotAvailable :
case Code7ResItemNotAvailable1 : return S7Consts.errCliItemNotAvailable;
case Code7DataOverPDU : return S7Consts.errCliSizeOverPDU;
case Code7InvalidValue : return S7Consts.errCliInvalidValue;
case Code7FunNotAvailable : return S7Consts.errCliFunNotAvailable;
case Code7NeedPassword : return S7Consts.errCliNeedPassword;
case Code7InvalidPassword : return S7Consts.errCliInvalidPassword;
case Code7NoPasswordToSet :
case Code7NoPasswordToClear : return S7Consts.errCliNoPasswordToSetOrClear;
default:
return S7Consts.errCliFunctionRefused;
};
}
#endregion
#region [Class Control]
public S7Client()
{
CreateSocket();
}
~S7Client()
{
Disconnect();
}
public int Connect()
{
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
if (!Connected)
{
TCPConnect(); // First stage : TCP Connection
if (_LastError == 0)
{
ISOConnect(); // Second stage : ISOTCP (ISO 8073) Connection
if (_LastError == 0)
{
_LastError = NegotiatePduLength(); // Third stage : S7 PDU negotiation
}
}
}
if (_LastError != 0)
Disconnect();
else
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int ConnectTo(string Address, int Rack, int Slot)
{
UInt16 RemoteTSAP = (UInt16)((ConnType << 8) + (Rack * 0x20) + Slot);
SetConnectionParams(Address, 0x0100, RemoteTSAP);
return Connect();
}
public int SetConnectionParams(string Address, ushort LocalTSAP, ushort RemoteTSAP)
{
int LocTSAP = LocalTSAP & 0x0000FFFF;
int RemTSAP = RemoteTSAP & 0x0000FFFF;
IPAddress = Address;
LocalTSAP_HI = (byte)(LocTSAP >> 8);
LocalTSAP_LO = (byte)(LocTSAP & 0x00FF);
RemoteTSAP_HI = (byte)(RemTSAP >> 8);
RemoteTSAP_LO = (byte)(RemTSAP & 0x00FF);
return 0;
}
public int SetConnectionType(ushort ConnectionType)
{
ConnType = ConnectionType;
return 0;
}
public int Disconnect()
{
Socket.Close();
return 0;
}
public int GetParam(Int32 ParamNumber, ref int Value)
{
int Result = 0;
switch (ParamNumber)
{
case S7Consts.p_u16_RemotePort:
{
Value = PLCPort;
break;
}
case S7Consts.p_i32_PingTimeout:
{
Value = ConnTimeout;
break;
}
case S7Consts.p_i32_SendTimeout:
{
Value = SendTimeout;
break;
}
case S7Consts.p_i32_RecvTimeout:
{
Value = RecvTimeout;
break;
}
case S7Consts.p_i32_PDURequest:
{
Value = PduSizeRequested;
break;
}
default:
{
Result = S7Consts.errCliInvalidParamNumber;
break;
}
}
return Result;
}
// Set Properties for compatibility with Snap7.net.cs
public int SetParam(Int32 ParamNumber, ref int Value)
{
int Result = 0;
switch(ParamNumber)
{
case S7Consts.p_u16_RemotePort:
{
PLCPort = Value;
break;
}
case S7Consts.p_i32_PingTimeout:
{
ConnTimeout = Value;
break;
}
case S7Consts.p_i32_SendTimeout:
{
SendTimeout = Value;
break;
}
case S7Consts.p_i32_RecvTimeout:
{
RecvTimeout = Value;
break;
}
case S7Consts.p_i32_PDURequest:
{
PduSizeRequested = Value;
break;
}
default:
{
Result = S7Consts.errCliInvalidParamNumber;
break;
}
}
return Result;
}
public delegate void S7CliCompletion(IntPtr usrPtr, int opCode, int opResult);
public int SetAsCallBack(S7CliCompletion Completion, IntPtr usrPtr)
{
return S7Consts.errCliFunctionNotImplemented;
}
#endregion
#region [Data I/O main functions]
public int ReadArea(int Area, int DBNumber, int Start, int Amount, int WordLen, byte[] Buffer)
{
int BytesRead = 0;
return ReadArea(Area, DBNumber, Start, Amount, WordLen, Buffer, ref BytesRead);
}
public int ReadArea(int Area, int DBNumber, int Start, int Amount, int WordLen, byte[] Buffer, ref int BytesRead)
{
int Address;
int NumElements;
int MaxElements;
int TotElements;
int SizeRequested;
int Length;
int Offset = 0;
int WordSize = 1;
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
// Some adjustment
if (Area == S7Consts.S7AreaCT)
WordLen = S7Consts.S7WLCounter;
if (Area == S7Consts.S7AreaTM)
WordLen = S7Consts.S7WLTimer;
// Calc Word size
WordSize = S7.DataSizeByte(WordLen);
if (WordSize == 0)
return S7Consts.errCliInvalidWordLen;
if (WordLen == S7Consts.S7WLBit)
Amount = 1; // Only 1 bit can be transferred at time
else
{
if ((WordLen != S7Consts.S7WLCounter) && (WordLen != S7Consts.S7WLTimer))
{
Amount = Amount * WordSize;
WordSize = 1;
WordLen = S7Consts.S7WLByte;
}
}
MaxElements = (_PDULength - 18) / WordSize; // 18 = Reply telegram header
TotElements = Amount;
while ((TotElements > 0) && (_LastError == 0))
{
NumElements = TotElements;
if (NumElements > MaxElements)
NumElements = MaxElements;
SizeRequested = NumElements * WordSize;
// Setup the telegram
Array.Copy(S7_RW, 0, PDU, 0, Size_RD);
// Set DB Number
PDU[27] = (byte)Area;
// Set Area
if (Area == S7Consts.S7AreaDB)
S7.SetWordAt(PDU, 25, (ushort)DBNumber);
// Adjusts Start and word length
if ((WordLen == S7Consts.S7WLBit) || (WordLen == S7Consts.S7WLCounter) || (WordLen == S7Consts.S7WLTimer))
{
Address = Start;
PDU[22] = (byte)WordLen;
}
else
Address = Start << 3;
// Num elements
S7.SetWordAt(PDU, 23, (ushort)NumElements);
// Address into the PLC (only 3 bytes)
PDU[30] = (byte)(Address & 0x0FF);
Address = Address >> 8;
PDU[29] = (byte)(Address & 0x0FF);
Address = Address >> 8;
PDU[28] = (byte)(Address & 0x0FF);
SendPacket(PDU, Size_RD);
if (_LastError == 0)
{
Length = RecvIsoPacket();
if (_LastError == 0)
{
if (Length<25)
_LastError = S7Consts.errIsoInvalidDataSize;
else
{
if (PDU[21] != 0xFF)
_LastError = CpuError(PDU[21]);
else
{
Array.Copy(PDU, 25, Buffer, Offset, SizeRequested);
Offset += SizeRequested;
}
}
}
}
TotElements -= NumElements;
Start += NumElements * WordSize;
}
if (_LastError == 0)
{
BytesRead = Offset;
Time_ms = Environment.TickCount - Elapsed;
}
else
BytesRead = 0;
return _LastError;
}
public int WriteArea(int Area, int DBNumber, int Start, int Amount, int WordLen, byte[] Buffer)
{
int BytesWritten = 0;
return WriteArea(Area, DBNumber, Start, Amount, WordLen, Buffer, ref BytesWritten);
}
public int WriteArea(int Area, int DBNumber, int Start, int Amount, int WordLen, byte[] Buffer, ref int BytesWritten)
{
int Address;
int NumElements;
int MaxElements;
int TotElements;
int DataSize;
int IsoSize;
int Length;
int Offset = 0;
int WordSize = 1;
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
// Some adjustment
if (Area == S7Consts.S7AreaCT)
WordLen = S7Consts.S7WLCounter;
if (Area == S7Consts.S7AreaTM)
WordLen = S7Consts.S7WLTimer;
// Calc Word size
WordSize = S7.DataSizeByte(WordLen);
if (WordSize == 0)
return S7Consts.errCliInvalidWordLen;
if (WordLen == S7Consts.S7WLBit) // Only 1 bit can be transferred at time
Amount = 1;
else
{
if ((WordLen != S7Consts.S7WLCounter) && (WordLen != S7Consts.S7WLTimer))
{
Amount = Amount * WordSize;
WordSize = 1;
WordLen = S7Consts.S7WLByte;
}
}
MaxElements = (_PDULength - 35) / WordSize; // 35 = Reply telegram header
TotElements = Amount;
while ((TotElements > 0) && (_LastError == 0))
{
NumElements = TotElements;
if (NumElements > MaxElements)
NumElements = MaxElements;
DataSize = NumElements * WordSize;
IsoSize = Size_WR + DataSize;
// Setup the telegram
Array.Copy(S7_RW, 0, PDU, 0, Size_WR);
// Whole telegram Size
S7.SetWordAt(PDU, 2, (ushort)IsoSize);
// Data Length
Length = DataSize + 4;
S7.SetWordAt(PDU, 15, (ushort)Length);
// Function
PDU[17] = (byte)0x05;
// Set DB Number
PDU[27] = (byte)Area;
if (Area == S7Consts.S7AreaDB)
S7.SetWordAt(PDU, 25, (ushort)DBNumber);
// Adjusts Start and word length
if ((WordLen == S7Consts.S7WLBit) || (WordLen == S7Consts.S7WLCounter) || (WordLen == S7Consts.S7WLTimer))
{
Address = Start;
Length = DataSize;
PDU[22] = (byte)WordLen;
}
else
{
Address = Start << 3;
Length = DataSize << 3;
}
// Num elements
S7.SetWordAt(PDU, 23, (ushort)NumElements);
// Address into the PLC
PDU[30] = (byte)(Address & 0x0FF);
Address = Address >> 8;
PDU[29] = (byte)(Address & 0x0FF);
Address = Address >> 8;
PDU[28] = (byte)(Address & 0x0FF);
// Transport Size
switch (WordLen)
{
case S7Consts.S7WLBit:
PDU[32] = TS_ResBit;
break;
case S7Consts.S7WLCounter:
case S7Consts.S7WLTimer:
PDU[32] = TS_ResOctet;
break;
default:
PDU[32] = TS_ResByte; // byte/word/dword etc.
break;
};
// Length
S7.SetWordAt(PDU, 33, (ushort)Length);
// Copies the Data
Array.Copy(Buffer, Offset, PDU, 35, DataSize);
SendPacket(PDU, IsoSize);
if (_LastError == 0)
{
Length = RecvIsoPacket();
if (_LastError == 0)
{
if (Length == 22)
{
if (PDU[21] != (byte)0xFF)
_LastError = CpuError(PDU[21]);
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
}
Offset += DataSize;
TotElements -= NumElements;
Start += NumElements * WordSize;
}
if (_LastError == 0)
{
BytesWritten = Offset;
Time_ms = Environment.TickCount - Elapsed;
}
else
BytesWritten = 0;
return _LastError;
}
public int ReadMultiVars(S7DataItem[] Items, int ItemsCount)
{
int Offset;
int Length;
int ItemSize;
byte[] S7Item = new byte[12];
byte[] S7ItemRead = new byte[1024];
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
// Checks items
if (ItemsCount > MaxVars)
return S7Consts.errCliTooManyItems;
// Fills Header
Array.Copy(S7_MRD_HEADER, 0, PDU, 0, S7_MRD_HEADER.Length);
S7.SetWordAt(PDU, 13, (ushort)(ItemsCount * S7Item.Length + 2));
PDU[18] = (byte)ItemsCount;
// Fills the Items
Offset = 19;
for (int c = 0; c < ItemsCount; c++)
{
Array.Copy(S7_MRD_ITEM, S7Item, S7Item.Length);
S7Item[3] = (byte)Items[c].WordLen;
S7.SetWordAt(S7Item, 4, (ushort)Items[c].Amount);
if (Items[c].Area == S7Consts.S7AreaDB)
S7.SetWordAt(S7Item, 6, (ushort)Items[c].DBNumber);
S7Item[8] = (byte)Items[c].Area;
// Address into the PLC
int Address = Items[c].Start;
S7Item[11] = (byte)(Address & 0x0FF);
Address = Address >> 8;
S7Item[10] = (byte)(Address & 0x0FF);
Address = Address >> 8;
S7Item[09] = (byte)(Address & 0x0FF);
Array.Copy(S7Item, 0, PDU, Offset, S7Item.Length);
Offset += S7Item.Length;
}
if (Offset > _PDULength)
return S7Consts.errCliSizeOverPDU;
S7.SetWordAt(PDU, 2, (ushort)Offset); // Whole size
SendPacket(PDU, Offset);
if (_LastError != 0)
return _LastError;
// Get Answer
Length = RecvIsoPacket();
if (_LastError != 0)
return _LastError;
// Check ISO Length
if (Length < 22)
{
_LastError = S7Consts.errIsoInvalidPDU; // PDU too Small
return _LastError;
}
// Check Global Operation Result
_LastError = CpuError(S7.GetWordAt(PDU, 17));
if (_LastError != 0)
return _LastError;
// Get true ItemsCount
int ItemsRead = S7.GetByteAt(PDU, 20);
if ((ItemsRead != ItemsCount) || (ItemsRead>MaxVars))
{
_LastError = S7Consts.errCliInvalidPlcAnswer;
return _LastError;
}
// Get Data
Offset = 21;
for (int c = 0; c < ItemsCount; c++)
{
// Get the Item
Array.Copy(PDU, Offset, S7ItemRead, 0, Length-Offset);
if (S7ItemRead[0] == 0xff)
{
ItemSize = (int)S7.GetWordAt(S7ItemRead, 2);
if ((S7ItemRead[1] != TS_ResOctet) && (S7ItemRead[1] != TS_ResReal) && (S7ItemRead[1] != TS_ResBit))
ItemSize = ItemSize >> 3;
Marshal.Copy(S7ItemRead, 4, Items[c].pData, ItemSize);
Items[c].Result = 0;
if (ItemSize % 2 != 0)
ItemSize++; // Odd size are rounded
Offset = Offset + 4 + ItemSize;
}
else
{
Items[c].Result = CpuError(S7ItemRead[0]);
Offset += 4; // Skip the Item header
}
}
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int WriteMultiVars(S7DataItem[] Items, int ItemsCount)
{
int Offset;
int ParLength;
int DataLength;
int ItemDataSize;
byte[] S7ParItem = new byte[S7_MWR_PARAM.Length];
byte[] S7DataItem = new byte[1024];
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
// Checks items
if (ItemsCount > MaxVars)
return S7Consts.errCliTooManyItems;
// Fills Header
Array.Copy(S7_MWR_HEADER, 0, PDU, 0, S7_MWR_HEADER.Length);
ParLength = ItemsCount * S7_MWR_PARAM.Length + 2;
S7.SetWordAt(PDU, 13, (ushort)ParLength);
PDU[18] = (byte)ItemsCount;
// Fills Params
Offset = S7_MWR_HEADER.Length;
for (int c=0; c<ItemsCount; c++)
{
Array.Copy(S7_MWR_PARAM, 0, S7ParItem, 0, S7_MWR_PARAM.Length);
S7ParItem[3] = (byte)Items[c].WordLen;
S7ParItem[8] = (byte)Items[c].Area;
S7.SetWordAt(S7ParItem, 4, (ushort)Items[c].Amount);
S7.SetWordAt(S7ParItem, 6, (ushort)Items[c].DBNumber);
// Address into the PLC
int Address = Items[c].Start;
S7ParItem[11] = (byte)(Address & 0x0FF);
Address = Address >> 8;
S7ParItem[10] = (byte)(Address & 0x0FF);
Address = Address >> 8;
S7ParItem[09] = (byte)(Address & 0x0FF);
Array.Copy(S7ParItem, 0, PDU, Offset, S7ParItem.Length);
Offset += S7_MWR_PARAM.Length;
}
// Fills Data
DataLength = 0;
for (int c = 0; c < ItemsCount; c++)
{
S7DataItem[0] = 0x00;
switch (Items[c].WordLen)
{
case S7Consts.S7WLBit:
S7DataItem[1] = TS_ResBit;
break;
case S7Consts.S7WLCounter:
case S7Consts.S7WLTimer:
S7DataItem[1] = TS_ResOctet;
break;
default:
S7DataItem[1] = TS_ResByte; // byte/word/dword etc.
break;
};
if ((Items[c].WordLen==S7Consts.S7WLTimer) || (Items[c].WordLen == S7Consts.S7WLCounter))
ItemDataSize = Items[c].Amount * 2;
else
ItemDataSize = Items[c].Amount;
if ((S7DataItem[1] != TS_ResOctet) && (S7DataItem[1] != TS_ResBit))
S7.SetWordAt(S7DataItem, 2, (ushort)(ItemDataSize*8));
else
S7.SetWordAt(S7DataItem, 2, (ushort)ItemDataSize);
Marshal.Copy(Items[c].pData, S7DataItem, 4, ItemDataSize);
if (ItemDataSize % 2 != 0)
{
S7DataItem[ItemDataSize+4] = 0x00;
ItemDataSize++;
}
Array.Copy(S7DataItem, 0, PDU, Offset, ItemDataSize+4);
Offset = Offset + ItemDataSize + 4;
DataLength = DataLength + ItemDataSize + 4;
}
// Checks the size
if (Offset > _PDULength)
return S7Consts.errCliSizeOverPDU;
S7.SetWordAt(PDU, 2, (ushort)Offset); // Whole size
S7.SetWordAt(PDU, 15, (ushort)DataLength); // Whole size
SendPacket(PDU, Offset);
RecvIsoPacket();
if (_LastError==0)
{
// Check Global Operation Result
_LastError = CpuError(S7.GetWordAt(PDU, 17));
if (_LastError != 0)
return _LastError;
// Get true ItemsCount
int ItemsWritten = S7.GetByteAt(PDU, 20);
if ((ItemsWritten != ItemsCount) || (ItemsWritten > MaxVars))
{
_LastError = S7Consts.errCliInvalidPlcAnswer;
return _LastError;
}
for (int c=0; c<ItemsCount; c++)
{
if (PDU[c + 21] == 0xFF)
Items[c].Result = 0;
else
Items[c].Result = CpuError((ushort)PDU[c + 21]);
}
Time_ms = Environment.TickCount - Elapsed;
}
return _LastError;
}
#endregion
#region [Data I/O lean functions]
public int DBRead(int DBNumber, int Start, int Size, byte[] Buffer)
{
return ReadArea(S7Consts.S7AreaDB, DBNumber, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int DBWrite(int DBNumber, int Start, int Size, byte[] Buffer)
{
return WriteArea(S7Consts.S7AreaDB, DBNumber, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int MBRead(int Start, int Size, byte[] Buffer)
{
return ReadArea(S7Consts.S7AreaMK, 0, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int MBWrite(int Start, int Size, byte[] Buffer)
{
return WriteArea(S7Consts.S7AreaMK, 0, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int EBRead(int Start, int Size, byte[] Buffer)
{
return ReadArea(S7Consts.S7AreaPE, 0, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int EBWrite(int Start, int Size, byte[] Buffer)
{
return WriteArea(S7Consts.S7AreaPE, 0, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int ABRead(int Start, int Size, byte[] Buffer)
{
return ReadArea(S7Consts.S7AreaPA, 0, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int ABWrite(int Start, int Size, byte[] Buffer)
{
return WriteArea(S7Consts.S7AreaPA, 0, Start, Size, S7Consts.S7WLByte, Buffer);
}
public int TMRead(int Start, int Amount, ushort[] Buffer)
{
byte[] sBuffer = new byte[Amount * 2];
int Result = ReadArea(S7Consts.S7AreaTM, 0, Start, Amount, S7Consts.S7WLTimer, sBuffer);
if (Result == 0)
{
for (int c = 0; c < Amount; c++)
{
Buffer[c] = (ushort)((sBuffer[c * 2 + 1] << 8) + (sBuffer[c * 2]));
}
}
return Result;
}
public int TMWrite(int Start, int Amount, ushort[] Buffer)
{
byte[] sBuffer = new byte[Amount * 2];
for (int c = 0; c < Amount; c++)
{
sBuffer[c * 2 + 1] = (byte)((Buffer[c] & 0xFF00) >> 8);
sBuffer[c * 2] = (byte)(Buffer[c] & 0x00FF);
}
return WriteArea(S7Consts.S7AreaTM, 0, Start, Amount, S7Consts.S7WLTimer, sBuffer);
}
public int CTRead(int Start, int Amount, ushort[] Buffer)
{
byte[] sBuffer = new byte[Amount * 2];
int Result = ReadArea(S7Consts.S7AreaCT, 0, Start, Amount, S7Consts.S7WLCounter, sBuffer);
if (Result==0)
{
for (int c=0; c<Amount; c++)
{
Buffer[c] = (ushort)((sBuffer[c * 2 + 1] << 8) + (sBuffer[c * 2]));
}
}
return Result;
}
public int CTWrite(int Start, int Amount, ushort[] Buffer)
{
byte[] sBuffer = new byte[Amount * 2];
for (int c = 0; c < Amount; c++)
{
sBuffer[c * 2 + 1] = (byte)((Buffer[c] & 0xFF00)>>8);
sBuffer[c * 2]= (byte)(Buffer[c] & 0x00FF);
}
return WriteArea(S7Consts.S7AreaCT, 0, Start, Amount, S7Consts.S7WLCounter, sBuffer);
}
#endregion
#region [Directory functions]
public int ListBlocks(ref S7BlocksList List)
{
return S7Consts.errCliFunctionNotImplemented;
}
private string SiemensTimestamp(long EncodedDate)
{
DateTime DT = new DateTime(1984, 1, 1).AddSeconds(EncodedDate*86400);
#if WINDOWS_UWP || NETFX_CORE
return DT.ToString(System.Globalization.DateTimeFormatInfo.CurrentInfo.ShortDatePattern);
#else
return DT.ToShortDateString();
#endif
}
public int GetAgBlockInfo(int BlockType, int BlockNum, ref S7BlockInfo Info)
{
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
S7_BI[30] = (byte)BlockType;
// Block Number
S7_BI[31] = (byte)((BlockNum / 10000) + 0x30);
BlockNum = BlockNum % 10000;
S7_BI[32] = (byte)((BlockNum / 1000) + 0x30);
BlockNum = BlockNum % 1000;
S7_BI[33] = (byte)((BlockNum / 100) + 0x30);
BlockNum = BlockNum % 100;
S7_BI[34] = (byte)((BlockNum / 10) + 0x30);
BlockNum = BlockNum % 10;
S7_BI[35] = (byte)((BlockNum / 1) + 0x30);
SendPacket(S7_BI);
if (_LastError == 0)
{
int Length = RecvIsoPacket();
if (Length > 32) // the minimum expected
{
ushort Result = S7.GetWordAt(PDU, 27);
if (Result == 0)
{
Info.BlkFlags= PDU[42];
Info.BlkLang = PDU[43];
Info.BlkType = PDU[44];
Info.BlkNumber = S7.GetWordAt(PDU, 45);
Info.LoadSize = S7.GetDIntAt(PDU, 47);
Info.CodeDate = SiemensTimestamp(S7.GetWordAt(PDU, 59));
Info.IntfDate = SiemensTimestamp(S7.GetWordAt(PDU, 65));
Info.SBBLength = S7.GetWordAt(PDU, 67);
Info.LocalData = S7.GetWordAt(PDU, 71);
Info.MC7Size = S7.GetWordAt(PDU, 73);
Info.Author = S7.GetCharsAt(PDU, 75, 8).Trim(new char[]{(char)0});
Info.Family = S7.GetCharsAt(PDU, 83, 8).Trim(new char[]{(char)0});
Info.Header = S7.GetCharsAt(PDU, 91, 8).Trim(new char[]{(char)0});
Info.Version = PDU[99];
Info.CheckSum = S7.GetWordAt(PDU, 101);
}
else
_LastError = CpuError(Result);
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int GetPgBlockInfo(ref S7BlockInfo Info, byte[] Buffer, int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int ListBlocksOfType(int BlockType, ushort[] List, ref int ItemsCount)
{
return S7Consts.errCliFunctionNotImplemented;
}
#endregion
#region [Blocks functions]
public int Upload(int BlockType, int BlockNum, byte[] UsrData, ref int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int FullUpload(int BlockType, int BlockNum, byte[] UsrData, ref int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int Download(int BlockNum, byte[] UsrData, int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int Delete(int BlockType, int BlockNum)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int DBGet(int DBNumber, byte[] UsrData, ref int Size)
{
S7BlockInfo BI = new S7BlockInfo();
int Elapsed = Environment.TickCount;
Time_ms = 0;
_LastError = GetAgBlockInfo(Block_DB, DBNumber, ref BI);
if (_LastError==0)
{
int DBSize = BI.MC7Size;
if (DBSize <= UsrData.Length)
{
Size = DBSize;
_LastError = DBRead(DBNumber, 0, DBSize, UsrData);
if (_LastError == 0)
Size = DBSize;
}
else
_LastError = S7Consts.errCliBufferTooSmall;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int DBFill(int DBNumber, int FillChar)
{
S7BlockInfo BI = new S7BlockInfo();
int Elapsed = Environment.TickCount;
Time_ms = 0;
_LastError = GetAgBlockInfo(Block_DB, DBNumber, ref BI);
if (_LastError == 0)
{
byte[] Buffer = new byte[BI.MC7Size];
for (int c = 0; c < BI.MC7Size; c++)
Buffer[c] = (byte)FillChar;
_LastError = DBWrite(DBNumber, 0, BI.MC7Size, Buffer);
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
#endregion
#region [Date/Time functions]
public int GetPlcDateTime(ref DateTime DT)
{
int Length;
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
SendPacket(S7_GET_DT);
if (_LastError == 0)
{
Length = RecvIsoPacket();
if (Length > 30) // the minimum expected
{
if ((S7.GetWordAt(PDU, 27) == 0) && (PDU[29] == 0xFF))
{
DT = S7.GetDateTimeAt(PDU, 35);
}
else
_LastError = S7Consts.errCliInvalidPlcAnswer;
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if(_LastError==0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int SetPlcDateTime(DateTime DT)
{
int Length;
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
S7.SetDateTimeAt(S7_SET_DT, 31, DT);
SendPacket(S7_SET_DT);
if (_LastError == 0)
{
Length = RecvIsoPacket();
if (Length > 30) // the minimum expected
{
if (S7.GetWordAt(PDU, 27) != 0)
_LastError = S7Consts.errCliInvalidPlcAnswer;
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int SetPlcSystemDateTime()
{
return SetPlcDateTime(DateTime.Now);
}
#endregion
#region [System Info functions]
public int GetOrderCode(ref S7OrderCode Info)
{
S7SZL SZL = new S7SZL();
int Size = 1024;
SZL.Data = new byte[Size];
int Elapsed = Environment.TickCount;
_LastError = ReadSZL(0x0011, 0x000, ref SZL, ref Size);
if (_LastError == 0)
{
Info.Code = S7.GetCharsAt(SZL.Data, 2, 20);
Info.V1 = SZL.Data[Size - 3];
Info.V2 = SZL.Data[Size - 2];
Info.V3 = SZL.Data[Size - 1];
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int GetCpuInfo(ref S7CpuInfo Info)
{
S7SZL SZL = new S7SZL();
int Size = 1024;
SZL.Data = new byte[Size];
int Elapsed = Environment.TickCount;
_LastError = ReadSZL(0x001C, 0x000, ref SZL, ref Size);
if (_LastError == 0)
{
Info.ModuleTypeName = S7.GetCharsAt(SZL.Data, 172, 32);
Info.SerialNumber = S7.GetCharsAt(SZL.Data, 138, 24);
Info.ASName = S7.GetCharsAt(SZL.Data, 2, 24);
Info.Copyright = S7.GetCharsAt(SZL.Data, 104, 26);
Info.ModuleName = S7.GetCharsAt(SZL.Data, 36, 24);
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int GetCpInfo(ref S7CpInfo Info)
{
S7SZL SZL = new S7SZL();
int Size = 1024;
SZL.Data = new byte[Size];
int Elapsed = Environment.TickCount;
_LastError = ReadSZL(0x0131, 0x001, ref SZL, ref Size);
if (_LastError == 0)
{
Info.MaxPduLength = S7.GetIntAt(PDU, 2);
Info.MaxConnections = S7.GetIntAt(PDU, 4);
Info.MaxMpiRate = S7.GetDIntAt(PDU, 6);
Info.MaxBusRate = S7.GetDIntAt(PDU, 10);
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int ReadSZL(int ID, int Index, ref S7SZL SZL, ref int Size)
{
int Length;
int DataSZL;
int Offset = 0;
bool Done = false;
bool First = true;
byte Seq_in = 0x00;
ushort Seq_out = 0x0000;
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
SZL.Header.LENTHDR = 0;
do
{
if (First)
{
S7.SetWordAt(S7_SZL_FIRST, 11, ++Seq_out);
S7.SetWordAt(S7_SZL_FIRST, 29, (ushort)ID);
S7.SetWordAt(S7_SZL_FIRST, 31, (ushort)Index);
SendPacket(S7_SZL_FIRST);
}
else
{
S7.SetWordAt(S7_SZL_NEXT, 11, ++Seq_out);
PDU[24] = (byte)Seq_in;
SendPacket(S7_SZL_NEXT);
}
if (_LastError != 0)
return _LastError;
Length = RecvIsoPacket();
if (_LastError == 0)
{
if (First)
{
if (Length > 32) // the minimum expected
{
if ((S7.GetWordAt(PDU, 27) == 0) && (PDU[29] == (byte)0xFF))
{
// Gets Amount of this slice
DataSZL = S7.GetWordAt(PDU, 31) - 8; // Skips extra params (ID, Index ...)
Done = PDU[26] == 0x00;
Seq_in = (byte)PDU[24]; // Slice sequence
SZL.Header.LENTHDR = S7.GetWordAt(PDU, 37);
SZL.Header.N_DR = S7.GetWordAt(PDU, 39);
Array.Copy(PDU, 41, SZL.Data, Offset, DataSZL);
// SZL.Copy(PDU, 41, Offset, DataSZL);
Offset += DataSZL;
SZL.Header.LENTHDR += SZL.Header.LENTHDR;
}
else
_LastError = S7Consts.errCliInvalidPlcAnswer;
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
else
{
if (Length > 32) // the minimum expected
{
if ((S7.GetWordAt(PDU, 27) == 0) && (PDU[29] == (byte)0xFF))
{
// Gets Amount of this slice
DataSZL = S7.GetWordAt(PDU, 31);
Done = PDU[26] == 0x00;
Seq_in = (byte)PDU[24]; // Slice sequence
Array.Copy(PDU, 37, SZL.Data, Offset, DataSZL);
Offset += DataSZL;
SZL.Header.LENTHDR += SZL.Header.LENTHDR;
}
else
_LastError = S7Consts.errCliInvalidPlcAnswer;
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
}
First = false;
}
while (!Done && (_LastError == 0));
if (_LastError==0)
{
Size = SZL.Header.LENTHDR;
Time_ms = Environment.TickCount - Elapsed;
}
return _LastError;
}
public int ReadSZLList(ref S7SZLList List, ref Int32 ItemsCount)
{
return S7Consts.errCliFunctionNotImplemented;
}
#endregion
#region [Control functions]
public int PlcHotStart()
{
_LastError = 0;
int Elapsed = Environment.TickCount;
SendPacket(S7_HOT_START);
if (_LastError == 0)
{
int Length = RecvIsoPacket();
if (Length > 18) // 18 is the minimum expected
{
if (PDU[19] != pduStart)
_LastError = S7Consts.errCliCannotStartPLC;
else
{
if (PDU[20] == pduAlreadyStarted)
_LastError = S7Consts.errCliAlreadyRun;
else
_LastError = S7Consts.errCliCannotStartPLC;
}
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int PlcColdStart()
{
_LastError = 0;
int Elapsed = Environment.TickCount;
SendPacket(S7_COLD_START);
if (_LastError == 0)
{
int Length = RecvIsoPacket();
if (Length > 18) // 18 is the minimum expected
{
if (PDU[19] != pduStart)
_LastError = S7Consts.errCliCannotStartPLC;
else
{
if (PDU[20] == pduAlreadyStarted)
_LastError = S7Consts.errCliAlreadyRun;
else
_LastError = S7Consts.errCliCannotStartPLC;
}
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int PlcStop()
{
_LastError = 0;
int Elapsed = Environment.TickCount;
SendPacket(S7_STOP);
if (_LastError == 0)
{
int Length = RecvIsoPacket();
if (Length > 18) // 18 is the minimum expected
{
if (PDU[19]!=pduStop)
_LastError = S7Consts.errCliCannotStopPLC;
else
{
if (PDU[20]== pduAlreadyStopped)
_LastError = S7Consts.errCliAlreadyStop;
else
_LastError = S7Consts.errCliCannotStopPLC;
}
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int PlcCopyRamToRom(UInt32 Timeout)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int PlcCompress(UInt32 Timeout)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int PlcGetStatus(ref Int32 Status)
{
_LastError = 0;
int Elapsed = Environment.TickCount;
SendPacket(S7_GET_STAT);
if (_LastError == 0)
{
int Length = RecvIsoPacket();
if (Length > 30) // the minimum expected
{
ushort Result = S7.GetWordAt(PDU, 27);
if (Result == 0)
{
switch (PDU[44])
{
case S7Consts.S7CpuStatusUnknown:
case S7Consts.S7CpuStatusRun:
case S7Consts.S7CpuStatusStop:
{
Status = PDU[44];
break;
}
default:
{
// Since RUN status is always 0x08 for all CPUs and CPs, STOP status
// sometime can be coded as 0x03 (especially for old cpu...)
Status = S7Consts.S7CpuStatusStop;
break;
}
}
}
else
_LastError = CpuError(Result);
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
#endregion
#region [Security functions]
public int SetSessionPassword(string Password)
{
byte[] pwd = { 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 };
int Length;
_LastError = 0;
int Elapsed = Environment.TickCount;
// Encodes the Password
S7.SetCharsAt(pwd, 0, Password);
pwd[0] = (byte)(pwd[0] ^ 0x55);
pwd[1] = (byte)(pwd[1] ^ 0x55);
for (int c = 2; c < 8; c++)
{
pwd[c] = (byte)(pwd[c] ^ 0x55 ^ pwd[c - 2]);
}
Array.Copy(pwd, 0, S7_SET_PWD, 29, 8);
// Sends the telegrem
SendPacket(S7_SET_PWD);
if (_LastError == 0)
{
Length = RecvIsoPacket();
if (Length > 32) // the minimum expected
{
ushort Result = S7.GetWordAt(PDU, 27);
if (Result != 0)
_LastError = CpuError(Result);
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
return _LastError;
}
public int ClearSessionPassword()
{
int Length;
_LastError = 0;
int Elapsed = Environment.TickCount;
SendPacket(S7_CLR_PWD);
if (_LastError == 0)
{
Length = RecvIsoPacket();
if (Length > 30) // the minimum expected
{
ushort Result = S7.GetWordAt(PDU, 27);
if (Result != 0)
_LastError = CpuError(Result);
}
else
_LastError = S7Consts.errIsoInvalidPDU;
}
return _LastError;
}
public int GetProtection(ref S7Protection Protection)
{
S7Client.S7SZL SZL = new S7Client.S7SZL();
int Size = 256;
SZL.Data = new byte[Size];
_LastError = ReadSZL(0x0232, 0x0004, ref SZL, ref Size);
if (_LastError == 0)
{
Protection.sch_schal = S7.GetWordAt(SZL.Data, 2);
Protection.sch_par = S7.GetWordAt(SZL.Data, 4);
Protection.sch_rel = S7.GetWordAt(SZL.Data, 6);
Protection.bart_sch = S7.GetWordAt(SZL.Data, 8);
Protection.anl_sch = S7.GetWordAt(SZL.Data, 10);
}
return _LastError;
}
#endregion
#region [Low Level]
public int IsoExchangeBuffer(byte[] Buffer, ref Int32 Size)
{
_LastError = 0;
Time_ms = 0;
int Elapsed = Environment.TickCount;
Array.Copy(TPKT_ISO, 0, PDU, 0, TPKT_ISO.Length);
S7.SetWordAt(PDU, 2, (ushort)(Size + TPKT_ISO.Length));
try
{
Array.Copy(Buffer, 0, PDU, TPKT_ISO.Length, Size);
}
catch
{
return S7Consts.errIsoInvalidPDU;
}
SendPacket(PDU, TPKT_ISO.Length + Size);
if (_LastError==0)
{
int Length=RecvIsoPacket();
if (_LastError==0)
{
Array.Copy(PDU, TPKT_ISO.Length, Buffer, 0, Length - TPKT_ISO.Length);
Size = Length - TPKT_ISO.Length;
}
}
if (_LastError == 0)
Time_ms = Environment.TickCount - Elapsed;
else
Size = 0;
return _LastError;
}
#endregion
#region [Async functions (not implemented)]
public int AsReadArea(int Area, int DBNumber, int Start, int Amount, int WordLen, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsWriteArea(int Area, int DBNumber, int Start, int Amount, int WordLen, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsDBRead(int DBNumber, int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsDBWrite(int DBNumber, int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsMBRead(int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsMBWrite(int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsEBRead(int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsEBWrite(int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsABRead(int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsABWrite(int Start, int Size, byte[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsTMRead(int Start, int Amount, ushort[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsTMWrite(int Start, int Amount, ushort[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsCTRead(int Start, int Amount, ushort[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsCTWrite(int Start, int Amount, ushort[] Buffer)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsListBlocksOfType(int BlockType, ushort[] List)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsReadSZL(int ID, int Index, ref S7SZL Data, ref Int32 Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsReadSZLList(ref S7SZLList List, ref Int32 ItemsCount)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsUpload(int BlockType, int BlockNum, byte[] UsrData, ref int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsFullUpload(int BlockType, int BlockNum, byte[] UsrData, ref int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int ASDownload(int BlockNum, byte[] UsrData, int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsPlcCopyRamToRom(UInt32 Timeout)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsPlcCompress(UInt32 Timeout)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsDBGet(int DBNumber, byte[] UsrData, ref int Size)
{
return S7Consts.errCliFunctionNotImplemented;
}
public int AsDBFill(int DBNumber, int FillChar)
{
return S7Consts.errCliFunctionNotImplemented;
}
public bool CheckAsCompletion(ref int opResult)
{
opResult = 0;
return false;
}
public int WaitAsCompletion(int Timeout)
{
return S7Consts.errCliFunctionNotImplemented;
}
#endregion
#region [Info Functions / Properties]
public string ErrorText(int Error)
{
switch (Error)
{
case 0: return "OK";
case S7Consts.errTCPSocketCreation: return "SYS : Error creating the Socket";
case S7Consts.errTCPConnectionTimeout: return "TCP : Connection Timeout";
case S7Consts.errTCPConnectionFailed: return "TCP : Connection Error";
case S7Consts.errTCPReceiveTimeout: return "TCP : Data receive Timeout";
case S7Consts.errTCPDataReceive: return "TCP : Error receiving Data";
case S7Consts.errTCPSendTimeout: return "TCP : Data send Timeout";
case S7Consts.errTCPDataSend: return "TCP : Error sending Data";
case S7Consts.errTCPConnectionReset: return "TCP : Connection reset by the Peer";
case S7Consts.errTCPNotConnected: return "CLI : Client not connected";
case S7Consts.errTCPUnreachableHost: return "TCP : Unreachable host";
case S7Consts.errIsoConnect: return "ISO : Connection Error";
case S7Consts.errIsoInvalidPDU: return "ISO : Invalid PDU received";
case S7Consts.errIsoInvalidDataSize: return "ISO : Invalid Buffer passed to Send/Receive";
case S7Consts.errCliNegotiatingPDU: return "CLI : Error in PDU negotiation";
case S7Consts.errCliInvalidParams: return "CLI : invalid param(s) supplied";
case S7Consts.errCliJobPending: return "CLI : Job pending";
case S7Consts.errCliTooManyItems: return "CLI : too may items (>20) in multi read/write";
case S7Consts.errCliInvalidWordLen: return "CLI : invalid WordLength";
case S7Consts.errCliPartialDataWritten: return "CLI : Partial data written";
case S7Consts.errCliSizeOverPDU: return "CPU : total data exceeds the PDU size";
case S7Consts.errCliInvalidPlcAnswer: return "CLI : invalid CPU answer";
case S7Consts.errCliAddressOutOfRange: return "CPU : Address out of range";
case S7Consts.errCliInvalidTransportSize: return "CPU : Invalid Transport size";
case S7Consts.errCliWriteDataSizeMismatch: return "CPU : Data size mismatch";
case S7Consts.errCliItemNotAvailable: return "CPU : Item not available";
case S7Consts.errCliInvalidValue: return "CPU : Invalid value supplied";
case S7Consts.errCliCannotStartPLC: return "CPU : Cannot start PLC";
case S7Consts.errCliAlreadyRun: return "CPU : PLC already RUN";
case S7Consts.errCliCannotStopPLC: return "CPU : Cannot stop PLC";
case S7Consts.errCliCannotCopyRamToRom: return "CPU : Cannot copy RAM to ROM";
case S7Consts.errCliCannotCompress: return "CPU : Cannot compress";
case S7Consts.errCliAlreadyStop: return "CPU : PLC already STOP";
case S7Consts.errCliFunNotAvailable: return "CPU : Function not available";
case S7Consts.errCliUploadSequenceFailed: return "CPU : Upload sequence failed";
case S7Consts.errCliInvalidDataSizeRecvd: return "CLI : Invalid data size received";
case S7Consts.errCliInvalidBlockType: return "CLI : Invalid block type";
case S7Consts.errCliInvalidBlockNumber: return "CLI : Invalid block number";
case S7Consts.errCliInvalidBlockSize: return "CLI : Invalid block size";
case S7Consts.errCliNeedPassword: return "CPU : Function not authorized for current protection level";
case S7Consts.errCliInvalidPassword: return "CPU : Invalid password";
case S7Consts.errCliNoPasswordToSetOrClear: return "CPU : No password to set or clear";
case S7Consts.errCliJobTimeout: return "CLI : Job Timeout";
case S7Consts.errCliFunctionRefused: return "CLI : function refused by CPU (Unknown error)";
case S7Consts.errCliPartialDataRead: return "CLI : Partial data read";
case S7Consts.errCliBufferTooSmall: return "CLI : The buffer supplied is too small to accomplish the operation";
case S7Consts.errCliDestroying: return "CLI : Cannot perform (destroying)";
case S7Consts.errCliInvalidParamNumber: return "CLI : Invalid Param Number";
case S7Consts.errCliCannotChangeParam: return "CLI : Cannot change this param now";
case S7Consts.errCliFunctionNotImplemented: return "CLI : Function not implemented";
default: return "CLI : Unknown error (0x" + Convert.ToString(Error, 16) + ")";
};
}
public int LastError()
{
return _LastError;
}
public int RequestedPduLength()
{
return _PduSizeRequested;
}
public int NegotiatedPduLength()
{
return _PDULength;
}
public int ExecTime()
{
return Time_ms;
}
public int ExecutionTime
{
get
{
return Time_ms;
}
}
public int PduSizeNegotiated
{
get
{
return _PDULength;
}
}
public int PduSizeRequested
{
get
{
return _PduSizeRequested;
}
set
{
if (value < MinPduSizeToRequest)
value = MinPduSizeToRequest;
if (value > MaxPduSizeToRequest)
value = MaxPduSizeToRequest;
_PduSizeRequested = value;
}
}
public int PLCPort
{
get
{
return _PLCPort;
}
set
{
_PLCPort = value;
}
}
public int ConnTimeout
{
get
{
return _ConnTimeout;
}
set
{
_ConnTimeout = value;
}
}
public int RecvTimeout
{
get
{
return _RecvTimeout;
}
set
{
_RecvTimeout = value;
}
}
public int SendTimeout
{
get
{
return _SendTimeout;
}
set
{
_SendTimeout = value;
}
}
public bool Connected
{
get
{
return (Socket != null) && (Socket.Connected);
}
}
#endregion
}
}
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