<NME> PLCConnectionConfiguration.cs
<BEF> ﻿/*
 This implements a high level Wrapper between libnodave.dll and applications written
 in MS .Net languages.
 
 This ConnectionLibrary was written by Jochen Kuehner
 * http://jfk-solutuions.de/
 * 
 * Thanks go to:
 * Steffen Krayer -> For his work on MC7 decoding and the Source for his Decoder
 * Zottel         -> For LibNoDave

 WPFToolboxForSiemensPLCs is free software; you can redistribute it and/or modify
 it under the terms of the GNU Library General Public License as published by
 the Free Software Foundation; either version 2, or (at your option)
 any later version.

 WPFToolboxForSiemensPLCs 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
 GNU General Public License for more details.

 You should have received a copy of the GNU Library General Public License
 along with Libnodave; see the file COPYING.  If not, write to
 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  
*/
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Xml.Serialization;
using DotNetSiemensPLCToolBoxLibrary.General;

namespace DotNetSiemensPLCToolBoxLibrary.Communication
{
    [System.ComponentModel.Editor("DotNetSiemensPLCToolBoxLibrary.Communication.PLCConnectionUITypeEditor", "System.Drawing.Design.UITypeEditor")]
    [Serializable]
    /// <summary>
    /// This Class stores the Connection Configuration to a PLC
    /// </summary>
    public class PLCConnectionConfiguration : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        private void NotifyPropertyChanged(String info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }

        #region Properties
        private string _connectionName;
        /// <summary>
        /// Name of the connection. This value can be freely defined by the user
        /// </summary>
        public String ConnectionName
        {
            get { return _connectionName; }
            set
            {
                _connectionName = value;
                NotifyPropertyChanged("ConnectionName");
                NotifyPropertyChanged("ObjectAsString");
            }
        }

        private string _entryPoint = "S7ONLINE";
        /// <summary>
        /// the entry point of the Simatic NEt configuration to be used. 
        /// Please refer to the Simatic Net documentation for details.
        /// by default is S7ONLINE
        /// </summary>
        public string EntryPoint
        {
            get { return _entryPoint; }
            set { _entryPoint = value; NotifyPropertyChanged("EntryPoint"); NotifyPropertyChanged("ObjectAsString"); }
        }

        //Only possible on 400er CPUs
        private bool _useShortDataBlockRequest = false;
        public bool UseShortDataBlockRequest
        {
            get { return _useShortDataBlockRequest; }
            set { _useShortDataBlockRequest = value; NotifyPropertyChanged("UseShortDataBlockRequest"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _cpuRack = 0;
        /// <summary>
        /// The Rack where the destination CPU is inserted. This value should be 0 in almost all cases.
        /// Only in Multi CPU configurations this needs to be adjusted.
        /// </summary>
        public int CpuRack
        {
            get { return _cpuRack; }
            set { _cpuRack = value; NotifyPropertyChanged("CpuRack"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _cpuSlot = 2;
        /// <summary>
        /// The slot where the destination CPU is inserted in the selected Rack.
        /// This value depends on the particular hardware configuration of the CPU.
        /// Usually it is 2 for S7-300 CPUs and 3 for S7-400 CPUs
        /// On Redundant H-CPU configurations this value must be set accordingly, in order for the comunication to work properly
        /// </summary>
        public int CpuSlot
        {
            get { return _cpuSlot; }
            set { _cpuSlot = value; NotifyPropertyChanged("CpuSlot"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _cpuMpi = 2;
            set { _comPort = value; NotifyPropertyChanged("ComPort"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _connectionType;
        public int ConnectionType
        {
        }

        private int _port = 102;
        /// <summary>
        /// The TCP Port to be used for connecting the CPU via ISO over TCP. 
        /// This value usually should set to the default 102 (ISO Transport Service Access Point (TSAP) Class 0 protocol)
        /// </summary>
        public int Port
        {
            get { return _port; }
            set { _port = value; NotifyPropertyChanged("Port"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _writePort = 30501;
        public int WritePort
        {
            get { return _writePort; }
            set { _writePort = value; NotifyPropertyChanged("WritePort"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _lokalMpi = 0;
        /// <summary>
        /// The local MPI Address to be used by the MPI adapter to comunicate with the CPU.
        /// By convention the address 0 is reserved for Programing devices.
        /// </summary>
        public int LokalMpi
        {
            get { return _lokalMpi; }
            set { _lokalMpi = value; NotifyPropertyChanged("LokalMpi"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private string _comPort = "COM1";
        /// <summary>
        /// The Com port name where the MPI adapter is connected to. 
        /// if an RS232 to USB adapter is used (such as the Siamtic USB-MPI adapter)
        /// the Virtual com port name of the adapter must be chosen.
        /// </summary>
        public string ComPort
        {
            get { return _comPort; }
            set { _comPort = value; NotifyPropertyChanged("ComPort"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private LibNodaveConnectionResource _plcConnectionType = LibNodaveConnectionResource.PG;
        /// <summary>
        /// Defines the Connection resource to be used in the PLC
        /// </summary>
        public LibNodaveConnectionResource PLCConnectionType
        {
            get { return _plcConnectionType; }
            set { _plcConnectionType = value; NotifyPropertyChanged("PLCConnectionType"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private LibNodaveConnectionResource _routingplcConnectionType = LibNodaveConnectionResource.PG;
        public LibNodaveConnectionResource RoutingPLCConnectionType
        {
            get { return _routingplcConnectionType; }
            set { _routingplcConnectionType = value; NotifyPropertyChanged("RoutingPLCConnectionType"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private LibNodaveConnectionTypes _connectionType = LibNodaveConnectionTypes.ISO_over_TCP;
        /// <summary>
        /// Defines how the connection to the PLC should be established
        /// </summary>
        public LibNodaveConnectionTypes ConnectionType
        {
            get { return _connectionType; }
            set { _connectionType = value; NotifyPropertyChanged("ConnectionType"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private LibNodaveConnectionBusSpeed _busSpeed = LibNodaveConnectionBusSpeed.Speed_187k;
        /// <summary>
        /// defines the Bus speed for the connected MPI adapter
        /// The default MPI bus speed is 19200 bit / second
        /// </summary>
        public LibNodaveConnectionBusSpeed BusSpeed
        {
            get { return _busSpeed; }
            set { _busSpeed = value; NotifyPropertyChanged("BusSpeed"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private bool _netLinkReset = false;
        public bool NetLinkReset
        {
            get { return _netLinkReset; }
            set { _netLinkReset = value; NotifyPropertyChanged("NetLinkReset"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private string _comPortSpeed = "38400";
        /// <summary>
        /// defines the Bus speed for the connected MPI adapter
        /// The default MPI bus speed is 19200 bit / second
        /// </summary>
        public string ComPortSpeed
        {
            get { return _comPortSpeed; }
            set { _comPortSpeed = value; NotifyPropertyChanged("ComPortSpeed"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private LibNodaveConnectionBusParity _comPortParity = LibNodaveConnectionBusParity.even;

        /// <summary>
        /// Com port parity to use for MPI connection. By default MPI uses Even parity
        /// </summary>
        public LibNodaveConnectionBusParity ComPortParity
        {
            get { return _comPortParity; }
            set
            {
                _comPortParity = value;
                NotifyPropertyChanged("ComPortParity");
                NotifyPropertyChanged("ObjectAsString");
            }
        }

        private bool _routing = false;
        public bool Routing
        {
            get { return _routing; }
            set { _routing = value; NotifyPropertyChanged("Routing"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private string _routingDestination;
        public string RoutingDestination
        {
            get { return _routingDestination; }
            set { _routingDestination = value; NotifyPropertyChanged("RoutingDestination"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _routingDestinationRack;
        public int RoutingDestinationRack
        {
            get { return _routingDestinationRack; }
            set { _routingDestinationRack = value; NotifyPropertyChanged("RoutingDestinationRack"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _routingDestinationSlot;
        public int RoutingDestinationSlot
        {
            get { return _routingDestinationSlot; }
            set { _routingDestinationSlot = value; NotifyPropertyChanged("RoutingDestinationSlot"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _routingSubnet1;
        public int RoutingSubnet1
        {
            get { return _routingSubnet1; }
            set { _routingSubnet1 = value; NotifyPropertyChanged("RoutingSubnet1"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private int _routingSubnet2;
        public int RoutingSubnet2
        {
            get { return _routingSubnet2; }
            set { _routingSubnet2 = value; NotifyPropertyChanged("RoutingSubnet2"); NotifyPropertyChanged("ObjectAsString"); }
        }

        private TimeSpan _timeout = TimeSpan.FromMilliseconds( 5000); 
        /// <summary>
        /// The timeout to wait for responses from the PLC
        /// in microseconds
        /// </summary>
        [XmlIgnore]
        public TimeSpan Timeout
        {
            get { return _timeout; }
            set { _timeout = value; NotifyPropertyChanged("Timeout"); NotifyPropertyChanged("ObjectAsString"); }
        }

        /// <summary>
        /// Used for serialization only.
        /// </summary>
        /// <remarks>The Problem is that the XML Serializer can not serialize Timespans. So serialize an "hidden" integer instead</remarks>
        [XmlElement(ElementName = "Timeout"), Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        public int TimeoutMicroseconds
        {
            get { return (int)Timeout.TotalMilliseconds * 1000; }
            set { Timeout = TimeSpan.FromMilliseconds(value / 1000); }
        }

        private TimeSpan _timeoutIpConnect = TimeSpan.FromMilliseconds(5000);
        /// <summary>
        /// The default Timeout to be used for ISO over TCP conection
        /// In miliseconds
        /// </summary>
        [XmlIgnore]
                    this.RoutingDestination = Convert.ToString(myConnectionKey.GetValue("RoutingDestination", "2"));
                    this.Port = Convert.ToInt32(myConnectionKey.GetValue("Port", "102"));

                    this.Timeout = Convert.ToInt32(myConnectionKey.GetValue("Timeout", "5000000"));
                    this.TimeoutIPConnect = Convert.ToInt32(myConnectionKey.GetValue("TimeoutIPConnect", "5000"));
                }
        /// <remarks>The Problem is that the XML Serializer can not serialize Timespans. So serialize an "hidden" integer instead</remarks>
        [XmlElement (ElementName = "TimeoutIPConnect"), Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        public int TimeoutIPConnectMiliseconds
        {
            get { return (int)TimeoutIPConnect.TotalMilliseconds;}
            set { _timeoutIpConnect = TimeSpan.FromMilliseconds (value); }
        }

        private bool _initDone { get; set; }

        private LibNodaveConnectionConfigurationType _configurationType;
        public LibNodaveConnectionConfigurationType ConfigurationType
        {
            get { return _configurationType; }
            set { _configurationType = value; NotifyPropertyChanged("ConfigurationType"); NotifyPropertyChanged("ObjectAsString"); }
        }
        #endregion

        public string ObjectAsString
        {
            get { return ToString(); }
        }

        public static String[] GetConfigurationNames()
        {
#if !IPHONE
            if (File.Exists(ConfigurationPathAndFilename))
            {
                
                Dictionary<String, PLCConnectionConfiguration> Connections = null;
                using (TextReader strm = new StreamReader(ConfigurationPathAndFilename))
                {
                    Connections = LoadConfigFile(strm);
                    strm.Close();
                }

                 //Connections = General.SerializeToString<Dictionary<String, PLCConnectionConfiguration>>.DeSerialize(txt);                    
                if (Connections != null)
                {
                    string[] Names = new string[Connections.Count];
                    Connections.Keys.CopyTo(Names, 0);
                    return Names;
                }
            }
            return new string[0];

            //RegistryKey myConnectionKey =
            //    Registry.CurrentUser.CreateSubKey("Software\\JFKSolutions\\WPFToolboxForSiemensPLCs\\Connections");
            //return myConnectionKey.GetSubKeyNames();
#else
			return null;
#endif
        }

                    myConnectionKey.SetValue("RoutingSubnet2", this.RoutingSubnet2);
                    myConnectionKey.SetValue("RoutingDestination", this.RoutingDestination);
                    myConnectionKey.SetValue("Port", this.Port);
                    myConnectionKey.SetValue("Timeout", this.Timeout);
                    myConnectionKey.SetValue("TimeoutIPConnect", this.TimeoutIPConnect);
                }
        /// </summary>
        /// <param name="ConnectionName"></param>
        public PLCConnectionConfiguration(String ConnectionName)
        {
            if (ConnectionName == "")
                this.ConnectionName = "tmpConnection1";
            else
                this.ConnectionName = ConnectionName;

            this.ConfigurationType = LibNodaveConnectionConfigurationType.RegistrySavedConfiguration;

            this.ReloadConfiguration();
        }

        /// <summary>
        /// Normal Constructor of the Config Object
        /// </summary>
        /// <param name="ConnectionName"></param>
        public PLCConnectionConfiguration(String ConnectionName, LibNodaveConnectionConfigurationType configurationType)
        {
            if (ConnectionName == "")
                this.ConnectionName = "tmpConnection1";
            else
                this.ConnectionName = ConnectionName;

            this.ConfigurationType = configurationType;

            this.ReloadConfiguration();
        }

        /// <summary>
        /// Normal Constructor of the Config Object
        /// </summary>
        /// <param name="ConnectionName"></param>
        public static List<PLCConnectionConfiguration> ExportConfigurations()
        {
            List<PLCConnectionConfiguration> retVal = new List<PLCConnectionConfiguration>();
            
            foreach (var myName in GetConfigurationNames())
            {
                retVal.Add(new PLCConnectionConfiguration(myName));
            }
            return retVal;
        }

        /// <summary>
        /// Normal Constructor of the Config Object
        /// </summary>
        /// <param name="ConnectionName"></param>
        public static void ImportConfigurations(List<PLCConnectionConfiguration> configs)
        {
            foreach (var myConfig in configs)
            {
                myConfig.ConfigurationType = LibNodaveConnectionConfigurationType.RegistrySavedConfiguration;
                myConfig.SaveConfiguration();
            }            
        }

        private static string ConfigurationPathAndFilename
        {
            get
            {
                return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData),
                                    "DotNetSiemensPLCToolBoxLibrary\\Connections.config");
            }
        }

        public void ReloadConfiguration()
        {
            if (ConfigurationType == LibNodaveConnectionConfigurationType.RegistrySavedConfiguration)
            {
#if !IPHONE

                if (File.Exists(ConfigurationPathAndFilename))
                {

                    Dictionary<String, PLCConnectionConfiguration> Connections = null;
                    using (TextReader strm = new StreamReader(ConfigurationPathAndFilename))
                    {
                        Connections = LoadConfigFile(strm);
                        strm.Close();
                    }

                    //Connections = General.SerializeToString<Dictionary<String, PLCConnectionConfiguration>>.DeSerialize(txt);                    
                    if (Connections != null && Connections.ContainsKey(ConnectionName))
                    {
                        PLCConnectionConfiguration akConf = Connections[ConnectionName];
                        this.EntryPoint = akConf.EntryPoint;
                        this.CpuRack = akConf.CpuRack;
                        this.CpuSlot = akConf.CpuSlot;
                        this.CpuMpi = akConf.CpuMpi;
                        this.CpuIP = akConf.CpuIP;
                        this.LokalMpi = akConf.LokalMpi;
                        this.ComPort = akConf.ComPort;
                        this.ConnectionType = akConf.ConnectionType;
                        this.BusSpeed = akConf.BusSpeed;
                        this.NetLinkReset = akConf.NetLinkReset;
                        this.ComPortSpeed = akConf.ComPortSpeed;
                        this.ComPortParity = akConf.ComPortParity;
                        this.Routing = akConf.Routing;
                        this.RoutingDestinationRack = akConf.RoutingDestinationRack;
                        this.RoutingDestinationSlot = akConf.RoutingDestinationSlot;
                        this.RoutingSubnet1 = akConf.RoutingSubnet1;
                        this.RoutingSubnet2 = akConf.RoutingSubnet2;
                        this.RoutingDestination = akConf.RoutingDestination;
                        this.Port = akConf.Port;
                        this.WritePort = akConf.WritePort;
                        this.UseShortDataBlockRequest = akConf.UseShortDataBlockRequest;

                        this.PLCConnectionType = akConf.PLCConnectionType;
                        this.RoutingPLCConnectionType = akConf.RoutingPLCConnectionType;

                        this.Timeout = akConf.Timeout;
                        this.TimeoutIPConnect = akConf.TimeoutIPConnect;
                    }
                }
                return;

                //RegistryKey myConnectionKey =
                //    Registry.CurrentUser.CreateSubKey(
                //        "Software\\JFKSolutions\\WPFToolboxForSiemensPLCs\\Connections\\" + ConnectionName);
                //if (myConnectionKey != null)
                //{
                //    this.EntryPoint = (String)myConnectionKey.GetValue("EntryPoint", "S7ONLINE");
                //    this.CpuRack = Convert.ToInt32(myConnectionKey.GetValue("CpuRack", "0"));
                //    this.CpuSlot = Convert.ToInt32(myConnectionKey.GetValue("CpuSlot", "2"));
                //    this.CpuMpi = Convert.ToInt32(myConnectionKey.GetValue("CpuMpi", "2"));
                //    this.CpuIP = (String)myConnectionKey.GetValue("CpuIP", "192.168.1.1");
                //    this.LokalMpi = Convert.ToInt32(myConnectionKey.GetValue("LokalMpi", "0"));
                //    this.ComPort = (String)myConnectionKey.GetValue("ComPort", "");
                //    this.ConnectionType = (LibNodaveConnectionTypes)Convert.ToInt32(myConnectionKey.GetValue("ConnectionType", "1"));
                //    this.BusSpeed = (LibNodaveConnectionBusSpeed)Convert.ToInt32(myConnectionKey.GetValue("BusSpeed", "2"));
                //    this.NetLinkReset = Convert.ToBoolean(myConnectionKey.GetValue("NetLinkReset", "false"));
                //    this.ComPortSpeed = (String)myConnectionKey.GetValue("ComPortSpeed", "38400");
                //    this.ComPortParity = (LibNodaveConnectionBusParity)Convert.ToInt32(myConnectionKey.GetValue("ComPortParity", "1"));
                //    this.Routing = Convert.ToBoolean(myConnectionKey.GetValue("Routing", "false"));
                //    this.RoutingDestinationRack =
                //        Convert.ToInt32(myConnectionKey.GetValue("RoutingDestinationRack", "0"));
                //    this.RoutingDestinationSlot =
                //        Convert.ToInt32(myConnectionKey.GetValue("RoutingDestinationSlot", "2"));
                //    this.RoutingSubnet1 = Convert.ToInt32(myConnectionKey.GetValue("RoutingSubnet1", "0"));
                //    this.RoutingSubnet2 = Convert.ToInt32(myConnectionKey.GetValue("RoutingSubnet2", "0"));
                //    this.RoutingDestination = Convert.ToString(myConnectionKey.GetValue("RoutingDestination", "2"));
                //    this.Port = Convert.ToInt32(myConnectionKey.GetValue("Port", "102"));
                //    this.WritePort = Convert.ToInt32(myConnectionKey.GetValue("WritePort", "30501"));

                //    this.PLCConnectionType = (LibNodaveConnectionResource)Convert.ToInt32(myConnectionKey.GetValue("PLCConnectionType", "1"));
                //    this.RoutingPLCConnectionType = (LibNodaveConnectionResource)Convert.ToInt32(myConnectionKey.GetValue("RoutingPLCConnectionType", "1"));

                //    this.Timeout = Convert.ToInt32(myConnectionKey.GetValue("Timeout", "5000000"));
                //    this.TimeoutIPConnect =  TimeSpan.FromMilliseconds( Convert.ToInt32(myConnectionKey.GetValue("TimeoutIPConnect", "5000")));
                //}
#endif
            }
            else
            {
                if (!_initDone)
                {
                    this.ConnectionType = LibNodaveConnectionTypes.ISO_over_TCP;
                    this.CpuMpi = 2;
                    this.EntryPoint = "S7ONLINE";
                    this.CpuIP = "192.168.1.1";
                    this.CpuRack = 0;
                    this.CpuSlot = 2;
                    this.Port = 102;
                    this.TimeoutIPConnect = TimeSpan.FromMilliseconds (5000);
                    this.Timeout = TimeSpan.FromMilliseconds(5000);
                    _initDone = true;
                }
            }
        }

        #region Load and Repair Config File
        /// <summary>
        /// Reads the configuration from an Stream
        /// </summary>
        /// <param name="strm"></param>
        /// <returns></returns>
        private static Dictionary<String, PLCConnectionConfiguration> LoadConfigFile(TextReader strm)
        {
            Dictionary<String, PLCConnectionConfiguration> Connections;
            DictionarySerializer<String, PLCConnectionConfiguration> ConnectionsDicSer = new DictionarySerializer<string, PLCConnectionConfiguration>();

            //the idea here is, to try to deserialize the data once, and if it fails,
            //Try to repair it. If it fails also the second time, then give up an throw
            //This is neede to maintain Backwards compatibility with config files that do not use
            //Enumerations.
            try
            {
                Connections = ConnectionsDicSer.Deserialize(strm);

            }
            catch (Exception ex)
            {
                try
                {
                    strm.Close(); //Close old stream
                    strm = new StreamReader(ConfigurationPathAndFilename); //Reopen temporary stream
                    string repaired = repairConfig(strm.ReadToEnd());
                    strm.Close(); //Close temporary stream
                    strm = new StringReader(repaired);
                    Connections = ConnectionsDicSer.Deserialize(strm);
                }
                catch
                {
                    throw ex; //Throw orignial Exception
                }
            }
            return Connections;
        }

        /// <summary>
        /// Try to repair the configuration file if an error is encoutnerd
        /// </summary>
        /// <param name="original"></param>
        /// <returns></returns>
        private static string repairConfig(string original)
        {
            string config = original;
            config = fixEnum(config, "ConnectionType", typeof(LibNodaveConnectionTypes));
            config = fixEnum(config, "PLCConnectionType", typeof(LibNodaveConnectionResource));
            config = fixEnum(config, "RoutingPLCConnectionType", typeof(LibNodaveConnectionResource));
            config = fixEnum(config, "BusSpeed", typeof(LibNodaveConnectionBusSpeed));
            config = fixEnum(config, "ComPortParity", typeof(LibNodaveConnectionBusParity));

            return config;
        }

        /// <summary>
        /// Replace the numerical enumeration value with its textual Value
        /// </summary>
        /// <param name="original">The original Config file content to search in</param>
        /// <param name="PropertyName">The Name of the property to replace the value on</param>
        /// <param name="PropertyEnumType">The type of Enumeration of the property in question</param>
        /// <returns></returns>
        private static string fixEnum(string original, string PropertyName, Type PropertyEnumType)
        {
            string New = original;

            int idx = original.IndexOf("<" + PropertyName + ">", 0, StringComparison.Ordinal);

            while (idx >= 0)
            {
                idx = idx + PropertyName.Length + 2;

                //Find next "Closing" tag and extract the current numerical value
                int Eidx = New.IndexOf("</", idx, StringComparison.Ordinal);
                string Value = New.Substring(idx, Eidx-idx);

                //Convert to enumeration and replace in file
                string EnumValue = Enum.Parse(PropertyEnumType, Value).ToString();
                if (Value == EnumValue) EnumValue = Enum.GetNames (PropertyEnumType)[0]; //parsing failed, the Value was invalid

                New = New.Remove(idx, Eidx - idx);
                New = New.Insert(idx, EnumValue.ToString());

                idx = New.IndexOf("<" + PropertyName + ">", idx, StringComparison.Ordinal);
            }

            return New;
        }
        #endregion

        public static void DeleteConfiguration(string ConnectionName)
        {
#if !IPHONE
            try
            {
                Dictionary<String, PLCConnectionConfiguration> Connections = null;

                if (File.Exists(ConfigurationPathAndFilename))
                {
                    using (TextReader strm = new StreamReader(ConfigurationPathAndFilename))
                    {
                        Connections = LoadConfigFile(strm);
                        strm.Close();
                    }
                }
                if (Connections == null)
                    Connections = new Dictionary<string, PLCConnectionConfiguration>();

                if (Connections.ContainsKey(ConnectionName))
                    Connections.Remove(ConnectionName);

                Directory.CreateDirectory(Path.GetDirectoryName(ConfigurationPathAndFilename));
                StreamWriter sstrm = new StreamWriter(ConfigurationPathAndFilename, false);
                DictionarySerializer<String, PLCConnectionConfiguration> ConnectionsDicSer = new DictionarySerializer<string, PLCConnectionConfiguration>();
                ConnectionsDicSer.Serialize(Connections, sstrm);
                //sstrm.Write(stxt);
                //sstrm.Flush();
                sstrm.Close();

                return;

                //Registry.CurrentUser.DeleteSubKeyTree(
                //    "Software\\JFKSolutions\\WPFToolboxForSiemensPLCs\\Connections\\" + ConnectionName);
            }
            catch (Exception)
            { }
#endif
        }

        public void SaveConfiguration()
        {
            if (ConfigurationType == LibNodaveConnectionConfigurationType.RegistrySavedConfiguration)
            {
#if !IPHONE

                DictionarySerializer<String, PLCConnectionConfiguration> ConnectionsDicSer = new DictionarySerializer<string, PLCConnectionConfiguration>();                   
                Dictionary<String, PLCConnectionConfiguration> Connections = null;

                if (File.Exists(ConfigurationPathAndFilename))
                {
                    using (TextReader strm = new StreamReader(ConfigurationPathAndFilename))
                    {
                        Connections = LoadConfigFile(strm);
                        strm.Close();
                    }

                }
                if (Connections == null)
                    Connections = new Dictionary<string, PLCConnectionConfiguration>();

                if (Connections.ContainsKey(ConnectionName))
                    Connections.Remove(ConnectionName);

                Connections.Add(ConnectionName, this);

                Directory.CreateDirectory(Path.GetDirectoryName(ConfigurationPathAndFilename));
                StreamWriter sstrm = new StreamWriter(ConfigurationPathAndFilename, false);
                ConnectionsDicSer.Serialize(Connections, sstrm);
                //sstrm.Write(stxt);
                //sstrm.Flush();
                sstrm.Close();

                return;

                //RegistryKey myConnectionKey =
                //    Registry.CurrentUser.CreateSubKey(
                //        "Software\\JFKSolutions\\WPFToolboxForSiemensPLCs\\Connections\\" + ConnectionName);
                //if (myConnectionKey != null)
                //{
                //    myConnectionKey.SetValue("EntryPoint", this.EntryPoint);
                //    myConnectionKey.SetValue("CpuRack", this.CpuRack);
                //    myConnectionKey.SetValue("CpuSlot", this.CpuSlot);
                //    myConnectionKey.SetValue("CpuMpi", this.CpuMpi);
                //    myConnectionKey.SetValue("CpuIP", this.CpuIP);
                //    myConnectionKey.SetValue("LokalMpi", this.LokalMpi);
                //    myConnectionKey.SetValue("ComPort", this.ComPort);
                //    myConnectionKey.SetValue("ConnectionType", (int)this.ConnectionType);
                //    myConnectionKey.SetValue("BusSpeed", (int)this.BusSpeed);
                //    myConnectionKey.SetValue("NetLinkReset", this.NetLinkReset);
                //    myConnectionKey.SetValue("ComPortSpeed", this.ComPortSpeed);
                //    myConnectionKey.SetValue("ComPortParity", (int)this.ComPortParity);
                //    myConnectionKey.SetValue("Routing", this.Routing);
                //    myConnectionKey.SetValue("RoutingDestinationRack", this.RoutingDestinationRack);
                //    myConnectionKey.SetValue("RoutingDestinationSlot", this.RoutingDestinationSlot);
                //    myConnectionKey.SetValue("RoutingSubnet1", this.RoutingSubnet1);
                //    myConnectionKey.SetValue("RoutingSubnet2", this.RoutingSubnet2);
                //    myConnectionKey.SetValue("RoutingDestination", this.RoutingDestination);
                //    myConnectionKey.SetValue("Port", this.Port);
                //    myConnectionKey.SetValue("WritePort", this.WritePort);
                //    myConnectionKey.SetValue("PLCConnectionType", (int)this.PLCConnectionType);
                //    myConnectionKey.SetValue("RoutingPLCConnectionType", (int)this.RoutingPLCConnectionType);
                //    myConnectionKey.SetValue("Timeout", this.Timeout);
                //    myConnectionKey.SetValue("TimeoutIPConnect", this.TimeoutIPConnect);
                //}
#endif
            }
        }

        public override string ToString()
        {
            string retVal = "";
            switch (ConnectionType)
            {

                case LibNodaveConnectionTypes.MPI_über_Serial_Adapter:
                    retVal = "MPI über seriell" + " (Port: " + ComPort + ", MPI: " + CpuMpi.ToString() + ")";
                    break;
                case LibNodaveConnectionTypes.MPI_über_Serial_Adapter_Andrews_Version_without_STX:
                    retVal = "MPI über seriell (Andrews Version)" + " (Port: " + ComPort + ", MPI: " + CpuMpi.ToString() + ")";
                    break;
                case  LibNodaveConnectionTypes.MPI_über_Serial_Adapter_Step_7_Version:
                    retVal = "MPI über seriell (Step7 Version)" + " (Port: " + ComPort + ", MPI: " + CpuMpi.ToString() + ")";
                    break;
                case  LibNodaveConnectionTypes.MPI_über_Serial_Adapter_Adrews_Version_with_STX:
                    retVal = "MPI über seriell" + " (Port: " + ComPort + ", MPI: " + CpuMpi.ToString() + ")";
                    break;
                case  LibNodaveConnectionTypes.PPI_über_Serial_Adapter:
                    retVal = "PPI über seriell";
                    break;
                case  LibNodaveConnectionTypes.AS_511:
                    retVal = "AS 511";
                    break;
                case LibNodaveConnectionTypes.Use_Step7_DLL:
                case LibNodaveConnectionTypes.Use_Step7_DLL_Without_TCP:
                    retVal = "Step7 DLL" + " (" + EntryPoint + ")";
                    break;
                case  LibNodaveConnectionTypes.ISO_over_TCP:
                    retVal = "ISO over TCP" + " (IP:" + CpuIP.ToString() + ",Rack:" + CpuRack.ToString() + ",Slot:" + CpuSlot.ToString() + ")";
                    break;
                case  LibNodaveConnectionTypes.ISO_over_TCP_CP_243:
                    retVal = "ISO over TCP (CP243)" + " (IP:" + CpuIP.ToString() + ",Rack:" + CpuRack.ToString() + ",Slot:" + CpuSlot.ToString() + ")";
                    break;
                case LibNodaveConnectionTypes.Netlink_lite:
                    retVal = "Netlink lite" + " (IP:" + CpuIP.ToString() + ")";
                    break;
                case LibNodaveConnectionTypes.Netlink_lite_PPI:
                    retVal = "Netlink lite PPI" + " (IP:" + CpuIP.ToString() + ")";
                    break;
                case LibNodaveConnectionTypes.Netlink_Pro:
                    retVal = "Netlink PRO" + " (IP:" + CpuIP.ToString() + ")";
                    break;
                case LibNodaveConnectionTypes.Fetch_Write_Active:
                    retVal = "Fetch/Write (Active)" + " (IP:" + CpuIP.ToString() + ", Port:" + Port + ", WritePort:" + WritePort + ")";
                    break;
                case LibNodaveConnectionTypes.Fetch_Write_Passive:
                    retVal = "Fetch/Write (Passive)" + " (IP:" + CpuIP.ToString() + ", Port:" + Port + ", WritePort:" + WritePort + ")";
                    break;
            }

            if (Routing)
                if (!RoutingDestination.Contains("."))
                    retVal += " (Routing: MPI/PB:" + RoutingDestination + ",Netz:" + RoutingSubnet1.ToString("X") + "-" + RoutingSubnet2.ToString("X") + ")";
                else
                    retVal += " (Routing: IP:" + RoutingDestination + ",Rack:" + RoutingDestinationRack.ToString() + ",Slot:" + RoutingDestinationSlot.ToString() + ",Netz:" + RoutingSubnet1.ToString("X") + "-" + RoutingSubnet2.ToString("X") + ")";
            return retVal;
        }

        public void SaveConfigToFile(string filename)
        {
            string txt = General.SerializeToString<PLCConnectionConfiguration>.Serialize(this);
            StreamWriter strm = new StreamWriter(filename, false);
            strm.Write(txt);
            strm.Flush();
            strm.Close();
        }

        public static PLCConnectionConfiguration LoadConfigFromFile(string filename)
        {
            StreamReader strm = new StreamReader(filename);
            string txt = strm.ReadToEnd();
            strm.Close();
            return General.SerializeToString<PLCConnectionConfiguration>.DeSerialize(txt);              
        }
    }

    public enum LibNodaveConnectionConfigurationType
    {
        [XmlEnum("RegistrySavedConfiguration")]
        RegistrySavedConfiguration = 1,
        [XmlEnum("ObjectSavedConfiguration")]
        ObjectSavedConfiguration = 2
    }

    public enum LibNodaveConnectionTypes
    {
        // ReSharper disable InconsistentNaming
        [XmlEnum("0")]
        None = 0,

        /// <summary>
        /// Connection via MPI adapter connected to an Serial Com Port
        /// </summary>
        [XmlEnum("1")]
        MPI_über_Serial_Adapter = 1,
        [XmlEnum("2")]
        MPI_über_Serial_Adapter_Andrews_Version_without_STX = 2,
        [XmlEnum("3")]
        MPI_über_Serial_Adapter_Step_7_Version = 3,
        [XmlEnum("4")]
        MPI_über_Serial_Adapter_Adrews_Version_with_STX = 4,

        /// <summary>
        /// Connection via PPI protocoll of an MPI/PB adapter. This is usually used for S7-200 family
        /// </summary>
        [XmlEnum("10")]
        PPI_über_Serial_Adapter = 10,

        /// <summary>
        /// Connection via the AS511 Protocoll used by S5 series PLCs
        /// </summary>
        [XmlEnum("20")]
        AS_511 = 20,

        /// <summary>
        /// Connection via the Simatic Net libraries. Simatic Net must be installed
        /// </summary>
        [XmlEnum("50")]
        Use_Step7_DLL = 50,
        [XmlEnum("51")]
        Use_Step7_DLL_Without_TCP = 51,
        [XmlEnum("52")]
        Use_Step7_DLL_Automatic_TCP_Detection = 52,

        /// <summary>
        /// Connections via the TCP/IP protocoll
        /// </summary>
        [XmlEnum("122")]
        ISO_over_TCP = 122,

        /// <summary>
        /// Connections via TCP/IP to an CP243 for S7-200 series PLCs
        /// </summary>
        [XmlEnum("123")]
        ISO_over_TCP_CP_243 = 123,
        [XmlEnum("223")]
        Netlink_lite = 223,
        [XmlEnum("224")]
        Netlink_lite_PPI = 224,
        [XmlEnum("230")]
        Netlink_Pro = 230,
        [XmlEnum("9122")]
        ISO_over_TCP_Managed = 9122,
        [XmlEnum("500")]
        Fetch_Write_Active = 500,
        [XmlEnum("501")]
        Fetch_Write_Passive = 501,
        // ReSharper restore InconsistentNaming
    }

    /// <summary>
    /// Communication Speeds for Profibus and MPI bus connection Adapters.
    /// The possible speeds can not be chosen freely, but are rather defined by the ProfiBus Standard
    /// </summary>
    public enum LibNodaveConnectionBusSpeed
    {
        // ReSharper disable InconsistentNaming
        /// <summary>
        /// 9.6 kbps
        /// </summary>
        [XmlEnum("0")]
        Speed_9k = 0,

        /// <summary>
        /// 19.2 kbps
        /// </summary>
        [XmlEnum("1")]
        Speed_19k = 1,

        /// <summary>
        /// 187,5 kbps
        /// </summary>
        [XmlEnum("2")]
        Speed_187k = 2,

        /// <summary>
        /// 0,5 Mbps
        /// </summary>
        [XmlEnum("3")]
        Speed_500k = 3,

        /// <summary>
        /// 1.5 Mbps
        /// </summary>
        [XmlEnum("4")]
        Speed_1500k = 4,

        /// <summary>
        /// 45.45 kbps
        /// </summary>
        [XmlEnum("5")]
        Speed_45k = 5,

        /// <summary>
        /// 93.75 kbps
        /// </summary>
        [XmlEnum("6")]
        Speed_93k = 6
        // ReSharper restore InconsistentNaming
    }

    public enum LibNodaveConnectionBusParity
    {
        [XmlEnum("101")]
        even = 'e',
        [XmlEnum("111")]
        odd = 'o',
        [XmlEnum("110")]
        none = 'n'
    }

    /// <summary>
    /// Defines the type of connection resource to use for communiction with the PLC
    /// Depending on the connection partner and connection type, the range of values is automatically limited to valid values or the value of the connection resource is assigned permanently. 
    /// </summary>
    public enum LibNodaveConnectionResource
    {
        /// <summary>
        ///Unknown connection resource
        /// </summary>
        [XmlEnum("0")]
        unknown = 0,

        /// <summary>
        /// Programming device connection
        /// Free connection (not configured)
        /// At least one resource per CPU is reserved for programming device connections. However, for certain S7-300 CPUs it is possible to reserve multiple resources in the CPU properties.
        /// S7 connections that are typically set up from a programming device or from a PC (with ES functionality). This type of connection is used to configure and program the addressed station/module as well as to test and commission it;
        /// afterwards, the connection is typically cleared again. This connection resource allows both read and write access (e.g., monitoring and loading). 
        /// </summary>
        [XmlEnum("1")]
        PG = 1,

        /// <summary>
        /// OP connection
        /// Free connection (not configured)
        /// At least one resource per CPU is reserved for OP connections. However, for certain S7-300 CPUs it is possible to reserve multiple resources in the CPU properties.
        /// S7 connections that are typically set up from an OP or from a PC (with OS functionality). This type of connection is used to monitor the addressed station/module with regard to the process that is being controlled.
        /// </summary>
        [XmlEnum("2")]
        OP = 2,

        /// <summary>
        /// Other
        /// Free connection (configured, unspecified connection)
        /// This connection resource can operate multiple connections. Use: Connection configured at one end with unspecified connection partner! The connection partner does not have to be configured if the connection resource 0x03 is addressed.
        /// Use is not specified. For example, this resource is used automatically when an S7 connection configured at both ends is configured from an S7-400 to an S7-300.
        /// </summary>
        [XmlEnum("3")]
        Other = 3,

        /// <summary>
        /// CPU
        /// Connections that are typically set up from a CPU to another module (CPU, FM, etc.) within a subnet. The connection setup is initiated by the application program,
        /// in which a connection configuration does not exist. This type of connection allows process data to be exchanged between the modules. For certain S7-300 CPUs, it is possible to reserve resources for S7 basic communication. 
        /// </summary>
        [XmlEnum("253")]
        CPU = 253

    }
}

<MSG> Updated LibNoDave and also teh Library.
It is now possible to specify the Connection Type on the PLC (PG Connection, OP Connection),
but this option is not yet in the Connection Editor (but it will come)

For this you have to use the new updated libnodave included in the lib! (Will not work with the old one!)


<DFF> @@ -113,6 +113,20 @@ namespace DotNetSiemensPLCToolBoxLibrary.Communication
             set { _comPort = value; NotifyPropertyChanged("ComPort"); NotifyPropertyChanged("ObjectAsString"); }
         }
 
+        private int _plcConnectionType = 1;
+        public int PLCConnectionType
+        {
+            get { return _plcConnectionType; }
+            set { _plcConnectionType = value; NotifyPropertyChanged("PLCConnectionType"); NotifyPropertyChanged("ObjectAsString"); }
+        }
+
+        private int _routingplcConnectionType = 1;
+        public int RoutingPLCConnectionType
+        {
+            get { return _routingplcConnectionType; }
+            set { _routingplcConnectionType = value; NotifyPropertyChanged("RoutingPLCConnectionType"); NotifyPropertyChanged("ObjectAsString"); }
+        }
+        
         private int _connectionType;
         public int ConnectionType
         {
@@ -305,6 +319,9 @@ namespace DotNetSiemensPLCToolBoxLibrary.Communication
                     this.RoutingDestination = Convert.ToString(myConnectionKey.GetValue("RoutingDestination", "2"));
                     this.Port = Convert.ToInt32(myConnectionKey.GetValue("Port", "102"));
 
+                    this.PLCConnectionType = Convert.ToInt32(myConnectionKey.GetValue("PLCConnectionType", "1"));
+                    this.RoutingPLCConnectionType = Convert.ToInt32(myConnectionKey.GetValue("RoutingPLCConnectionType", "1"));
+
                     this.Timeout = Convert.ToInt32(myConnectionKey.GetValue("Timeout", "5000000"));
                     this.TimeoutIPConnect = Convert.ToInt32(myConnectionKey.GetValue("TimeoutIPConnect", "5000"));
                 }
@@ -365,6 +382,8 @@ namespace DotNetSiemensPLCToolBoxLibrary.Communication
                     myConnectionKey.SetValue("RoutingSubnet2", this.RoutingSubnet2);
                     myConnectionKey.SetValue("RoutingDestination", this.RoutingDestination);
                     myConnectionKey.SetValue("Port", this.Port);
+                    myConnectionKey.SetValue("PLCConnectionType", this.PLCConnectionType);
+                    myConnectionKey.SetValue("RoutingPLCConnectionType", this.RoutingPLCConnectionType);
                     myConnectionKey.SetValue("Timeout", this.Timeout);
                     myConnectionKey.SetValue("TimeoutIPConnect", this.TimeoutIPConnect);
                 }

Updated LibNoDave and also teh Library. It is now possible to specify the Connection Type on the PLC (PG Connection, OP Connection), but this option is not yet in the Connection Editor (but it will come)