Upcount version

- added property for currentlly queued messages
- added (optional) progress to ReadByteRange

Examples/Program.cs

@@ -4,63 +4,204 @@ using MewtocolNet;
 using MewtocolNet.Logging;
 using MewtocolNet.Registers;
 
-namespace Examples {
+namespace Examples;
 
-    class Program {
+class Program {
 
-        static void Main(string[] args) { 
+    static void Main(string[] args) {
 
-            Task.Factory.StartNew(async () => {
+        Console.WriteLine("Enter your scenario number:\n" +
+                          "1 = Permanent connection\n" +
+                          "2 = Dispose connection");
 
-                //attaching the logger
+        var line = Console.ReadLine();
-                Logger.LogLevel = LogLevel.Verbose;
-                Logger.OnNewLogMessage((date, msg) => {
-                    Console.WriteLine($"{date.ToString("HH:mm:ss")} {msg}");
-                });
-                   
-                //setting up a new PLC interface and register collection
-                MewtocolInterface interf = new MewtocolInterface("10.237.191.3");
-                TestRegisters registers = new TestRegisters();
 
-                //attaching the register collection and an automatic poller
+        if(line == "1") {
-                interf.WithRegisterCollection(registers).WithPoller();
+            Scenario1();
-
-                await interf.ConnectAsync(
-                    (plcinf) => {
-
-                        //reading a value from the register collection
-                        Console.WriteLine($"BitValue is: {registers.BitValue}");
-                        Console.WriteLine($"TestEnum is: {registers.TestEnum}");
-
-                        //writing a value to the registers
-                        Task.Factory.StartNew(async () => {
-
-                            //set plc to run mode if not already
-                            await interf.SetOperationMode(OPMode.Run);
-
-                            await Task.Delay(2000);
-
-                            Console.WriteLine("Testregister was toggled");
-
-                            //adds 10 each time the plc connects to the PLCs INT regíster
-                            interf.SetRegister(nameof(registers.TestInt16), (short)(registers.TestInt16 + 10));
-                            //adds 1 each time the plc connects to the PLCs DINT regíster
-                            interf.SetRegister(nameof(registers.TestInt32), (registers.TestInt32 + 1));
-                            //adds 11.11 each time the plc connects to the PLCs REAL regíster
-                            interf.SetRegister(nameof(registers.TestFloat32), (float)(registers.TestFloat32 + 11.11));
-                            //writes 'Hello' to the PLCs string register
-                            interf.SetRegister(nameof(registers.TestString2), "Hello");
-                            //set the current second to the PLCs TIME register
-                            interf.SetRegister(nameof(registers.TestTime), TimeSpan.FromSeconds(DateTime.Now.Second));
-
-                        });
-
-                    }
-                );
-
-            });
-            
-            Console.ReadLine();
         }
+
+        if (line == "2") {
+            Scenario2();
+        }
+
+        Console.ReadLine();
     }
+
+    private static bool isProgressReadout = false;
+
+    static void Scenario1 () {
+
+        Task.Factory.StartNew(async () => {
+
+            //attaching the logger
+            Logger.LogLevel = LogLevel.Critical;
+            Logger.OnNewLogMessage((date, msg) => {
+                Console.WriteLine($"{date.ToString("HH:mm:ss")} {msg}");
+            });
+
+            //setting up a new PLC interface and register collection
+            MewtocolInterface interf = new MewtocolInterface("10.237.191.3");
+            TestRegisters registers = new TestRegisters();
+
+            //attaching the register collection and an automatic poller
+            interf.WithRegisterCollection(registers).WithPoller();
+
+            _ = Task.Factory.StartNew(async () => {
+                while (true) {
+                    if (isProgressReadout) continue;
+                    Console.Title = $"Polling Paused: {interf.PollingPaused}, " +
+                    $"Speed UP: {interf.BytesPerSecondUpstream} B/s, " +
+                    $"Speed DOWN: {interf.BytesPerSecondDownstream} B/s, " +
+                    $"Poll delay: {interf.PollerDelayMs} ms, " +
+                    $"Queued MSGs: {interf.QueuedMessages}";
+                    await Task.Delay(1000);
+                }
+            });
+
+            await interf.ConnectAsync((plcinf) => AfterConnect(interf, registers));
+
+        });
+
+    }
+
+    static void AfterConnect (MewtocolInterface interf, TestRegisters registers) {
+
+        //reading a value from the register collection
+        Console.WriteLine($"BitValue is: {registers.BitValue}");
+        Console.WriteLine($"TestEnum is: {registers.TestEnum}");
+
+        _ = Task.Factory.StartNew(async () => {
+
+            while(true) {
+
+                isProgressReadout = true;
+
+                await interf.ReadByteRange(1000, 2000, (p) => {
+
+                    var totSteps = 10;
+                    var cSteps = totSteps * p;
+
+                    string progBar = "";
+                    for (int i = 0; i < totSteps; i++) {
+
+                        if(i < (int)cSteps) {
+                            progBar += "⬛";
+                        } else {
+                            progBar += "⬜";
+                        }
+                        
+                    }
+
+                    Console.Title = $"Prog read range: {(p * 100).ToString("N1")}% {progBar} Queued MSGs: {interf.QueuedMessages}";
+
+                });
+
+                isProgressReadout = false;
+
+                await Task.Delay(3000);
+
+            }
+
+        });
+
+        //writing a value to the registers
+        _ = Task.Factory.StartNew(async () => {
+
+            //set plc to run mode if not already
+            await interf.SetOperationMode(OPMode.Run);
+
+            int startAdress = 10000;
+            int entryByteSize = 20 * 20;
+
+            var bytes = await interf.ReadByteRange(startAdress, entryByteSize);
+            Console.WriteLine($"Bytes: {string.Join('-', bytes)}");
+
+            await Task.Delay(2000);
+
+            await interf.SetRegisterAsync(nameof(registers.TestInt32), 100);
+
+            //adds 10 each time the plc connects to the PLCs INT regíster
+            interf.SetRegister(nameof(registers.TestInt16), (short)(registers.TestInt16 + 10));
+            //adds 1 each time the plc connects to the PLCs DINT regíster
+            interf.SetRegister(nameof(registers.TestInt32), (registers.TestInt32 + 1));
+            //adds 11.11 each time the plc connects to the PLCs REAL regíster
+            interf.SetRegister(nameof(registers.TestFloat32), (float)(registers.TestFloat32 + 11.11));
+            //writes 'Hello' to the PLCs string register
+            interf.SetRegister(nameof(registers.TestString2), "Hello");
+            //set the current second to the PLCs TIME register
+            interf.SetRegister(nameof(registers.TestTime), TimeSpan.FromSeconds(DateTime.Now.Second));
+
+            //test pausing poller
+
+            bool pollerPaused = false;
+
+            while (true) {
+
+                await Task.Delay(5000);
+
+                pollerPaused = !pollerPaused;
+
+                if (pollerPaused) {
+                    Console.WriteLine("Pausing poller");
+                    await interf.PausePollingAsync();
+                    //interf.PollerDelayMs += 10;
+                    Console.WriteLine("Paused poller");
+                } else {
+                    interf.ResumePolling();
+                    Console.WriteLine("Resumed poller");
+                }
+
+            }
+
+
+        });
+
+    } 
+
+    static void Scenario2 () {
+
+        Logger.LogLevel = LogLevel.Critical;
+        Logger.OnNewLogMessage((date, msg) => {
+            Console.WriteLine($"{date.ToString("HH:mm:ss")} {msg}");
+        });
+
+        Task.Factory.StartNew(async () => {
+
+            //automatic endpoint
+            using (var interf = new MewtocolInterface("10.237.191.3")) {
+
+                await interf.ConnectAsync();
+
+                if (interf.IsConnected) {
+
+                    await Task.Delay(5000);
+
+                }
+
+                interf.Disconnect();
+
+            }
+
+            //manual endpoint
+            using (var interf = new MewtocolInterface("10.237.191.3")) {
+
+                interf.HostEndpoint = new System.Net.IPEndPoint(System.Net.IPAddress.Parse("10.237.191.77"), 0);
+
+                await interf.ConnectAsync();
+
+                if(interf.IsConnected) {
+
+                    await Task.Delay(5000);
+
+                }
+
+                interf.Disconnect();
+
+            }
+
+
+        });
+
+    }
+
 }

Examples/TestRegisters.cs

@@ -18,11 +18,11 @@ namespace Examples {
         public bool TestBoolInputXD { get; private set; } 
 
         //corresponds to a DT1101 - DT1104 string register in the PLC with (STRING[4])
-        [Register(1101, 4)]
+        //[Register(1101, 4)]
-        public string TestString1 { get; private set; }
+        //public string TestString1 { get; private set; }
 
         //corresponds to a DT7000 16 bit int register in the PLC
-        [Register(7000)]
+        [Register(899)]
         public short TestInt16 { get; private set; }
 
         //corresponds to a DTD7001 - DTD7002 32 bit int register in the PLC
@@ -68,6 +68,8 @@ namespace Examples {
         [Register(50)]
         public CurrentState TestEnum { get; private set; }
 
+        [Register(100)]
+        public TimeSpan TsTest2 { get; private set; }
 
     }
 }

MewtocolNet/Mewtocol/CpuInfo.cs

@@ -1,14 +1,28 @@
 using System;
 
 namespace MewtocolNet.Registers {
+
+    /// <summary>
+    /// Contains information about the plc and its cpu
+    /// </summary>
     public partial class CpuInfo {
 
+        /// <summary>
+        /// The cpu type of the plc
+        /// </summary>
         public CpuType Cputype { get; set; }
+
+        /// <summary>
+        /// Program capacity in 1K steps
+        /// </summary>
         public int ProgramCapacity { get; set; }
+
+        /// <summary>
+        /// Version of the cpu
+        /// </summary>
         public string CpuVersion { get; set; }
 
-
+        internal static CpuInfo BuildFromHexString (string _cpuType, string _cpuVersion, string _progCapacity) {
-        public static CpuInfo BuildFromHexString (string _cpuType, string _cpuVersion, string _progCapacity) {
 
             CpuInfo retInf = new CpuInfo();
 
@@ -47,8 +61,7 @@ namespace MewtocolNet.Registers {
             return retInf;
 
         }
+    
     }
 
-
-
 }

MewtocolNet/Mewtocol/DynamicInterface.cs

@@ -14,17 +14,61 @@ namespace MewtocolNet {
     /// </summary>
     public partial class MewtocolInterface {
 
+        /// <summary>
+        /// True if the auto poller is currently paused
+        /// </summary>
+        public bool PollingPaused => pollerIsPaused;
+
         internal event Action PolledCycle;
-        internal CancellationTokenSource cTokenAutoUpdater;
+        
-        internal bool ContinousReaderRunning;
+        internal volatile bool pollerTaskRunning;
+        internal volatile bool pollerTaskStopped;
+        internal volatile bool pollerIsPaused;
+
         internal bool usePoller = false;
 
         #region Register Polling
 
+        /// <summary>
+        /// Kills the poller completely
+        /// </summary>
         internal void KillPoller () {
 
-            ContinousReaderRunning = false;
+            pollerTaskRunning = false;
-            cTokenAutoUpdater?.Cancel();
+            pollerTaskStopped = true;
+
+        }
+
+        /// <summary>
+        /// Pauses the polling and waits for the last message to be sent
+        /// </summary>
+        /// <returns></returns>
+        public async Task PausePollingAsync () {
+
+            if (!pollerTaskRunning)
+                return;
+
+            pollerTaskRunning = false;
+
+            while (!pollerIsPaused) {
+
+                if (pollerIsPaused)
+                    break;
+                
+                await Task.Delay(10);
+            
+            }
+
+            pollerTaskRunning = false;
+
+        }
+
+        /// <summary>
+        /// Resumes the polling
+        /// </summary>
+        public void ResumePolling () {
+
+            pollerTaskRunning = true;
 
         }
 
@@ -33,134 +77,108 @@ namespace MewtocolNet {
         /// </summary>
         internal void AttachPoller () {
 
-            if (ContinousReaderRunning) return;
+            if (pollerTaskRunning)
+                return;
 
-            cTokenAutoUpdater = new CancellationTokenSource();
+            Task.Factory.StartNew(async () => {
 
-            Logger.Log("Poller is attaching", LogLevel.Info, this);
+                Logger.Log("Poller is attaching", LogLevel.Info, this);
 
-            try {
+                int iteration = 0;
 
-                Task.Factory.StartNew(async () => {
+                pollerTaskStopped = false;
+                pollerTaskRunning = true;
+                pollerIsPaused = false;
 
-                    var plcinf = await GetPLCInfoAsync();
+                while (!pollerTaskStopped) {
-                    if (plcinf == null) {
-                        Logger.Log("PLC not reachable, stopping logger", LogLevel.Info, this);
-                        return;
-                    }
 
-                    PolledCycle += MewtocolInterface_PolledCycle;
+                    while (pollerTaskRunning) {
-                    void MewtocolInterface_PolledCycle () {
 
-                        StringBuilder stringBuilder = new StringBuilder();
+                        if (iteration >= Registers.Count + 1) {
-                        foreach (var reg in GetAllRegisters()) {
+                            iteration = 0;
-                            string address = $"{reg.GetRegisterString()}{reg.GetStartingMemoryArea()}".PadRight(8, (char)32);
+                            //invoke cycle polled event
-                            stringBuilder.AppendLine($"{address}{(reg.Name != null ? $" ({reg.Name})" : "")}: {reg.GetValueString()}");
+                            InvokePolledCycleDone();
+                            continue;
                         }
 
-                        Logger.Log($"Registers loaded are: \n" +
+                        if (iteration >= Registers.Count) {
-                                   $"--------------------\n" +
-                                   $"{stringBuilder.ToString()}" +
-                                   $"--------------------",
-                                   LogLevel.Verbose, this);
-
-                        Logger.Log("Logger did its first cycle successfully", LogLevel.Info, this);
-
-                        PolledCycle -= MewtocolInterface_PolledCycle;
-                    }
-
-                    ContinousReaderRunning = true;
-
-                    int getPLCinfoCycleCount = 0;
-
-                    while (ContinousReaderRunning) {
-
-                        //do priority tasks first
-                        if (PriorityTasks != null && PriorityTasks.Count > 0) {
-
-                            try {
-                                await PriorityTasks?.FirstOrDefault(x => !x.IsCompleted);
-                            } catch (NullReferenceException) { }
-
-                        } else if (getPLCinfoCycleCount > 25) {
-
                             await GetPLCInfoAsync();
-                            getPLCinfoCycleCount = 0;
+                            iteration++;
-
+                            continue;
                         }
 
-                        foreach (var reg in Registers) {
+                        var reg = Registers[iteration];
 
-                            if (reg is NRegister<short> shortReg) {
+                        if (reg is NRegister<short> shortReg) {
-                                var lastVal = shortReg.Value;
+                            var lastVal = shortReg.Value;
-                                var readout = (await ReadNumRegister(shortReg)).Register.Value;
+                            var readout = (await ReadNumRegister(shortReg)).Register.Value;
-                                if (lastVal != readout) {
+                            if (lastVal != readout) {
-                                    InvokeRegisterChanged(shortReg);
+                                InvokeRegisterChanged(shortReg);
-                                }
                             }
-                            if (reg is NRegister<ushort> ushortReg) {
+                        }
-                                var lastVal = ushortReg.Value;
+                        if (reg is NRegister<ushort> ushortReg) {
-                                var readout = (await ReadNumRegister(ushortReg)).Register.Value;
+                            var lastVal = ushortReg.Value;
-                                if (lastVal != readout) {
+                            var readout = (await ReadNumRegister(ushortReg)).Register.Value;
-                                    InvokeRegisterChanged(ushortReg);
+                            if (lastVal != readout) {
-                                }
+                                InvokeRegisterChanged(ushortReg);
                             }
-                            if (reg is NRegister<int> intReg) {
+                        }
-                                var lastVal = intReg.Value;
+                        if (reg is NRegister<int> intReg) {
-                                var readout = (await ReadNumRegister(intReg)).Register.Value;
+                            var lastVal = intReg.Value;
-                                if (lastVal != readout) {
+                            var readout = (await ReadNumRegister(intReg)).Register.Value;
-                                    InvokeRegisterChanged(intReg);
+                            if (lastVal != readout) {
-                                }
+                                InvokeRegisterChanged(intReg);
                             }
-                            if (reg is NRegister<uint> uintReg) {
+                        }
-                                var lastVal = uintReg.Value;
+                        if (reg is NRegister<uint> uintReg) {
-                                var readout = (await ReadNumRegister(uintReg)).Register.Value;
+                            var lastVal = uintReg.Value;
-                                if (lastVal != readout) {
+                            var readout = (await ReadNumRegister(uintReg)).Register.Value;
-                                    InvokeRegisterChanged(uintReg);
+                            if (lastVal != readout) {
-                                }
+                                InvokeRegisterChanged(uintReg);
                             }
-                            if (reg is NRegister<float> floatReg) {
+                        }
-                                var lastVal = floatReg.Value;
+                        if (reg is NRegister<float> floatReg) {
-                                var readout = (await ReadNumRegister(floatReg)).Register.Value;
+                            var lastVal = floatReg.Value;
-                                if (lastVal != readout) {
+                            var readout = (await ReadNumRegister(floatReg)).Register.Value;
-                                    InvokeRegisterChanged(floatReg);
+                            if (lastVal != readout) {
-                                }
+                                InvokeRegisterChanged(floatReg);
                             }
-                            if (reg is NRegister<TimeSpan> tsReg) {
+                        }
-                                var lastVal = tsReg.Value;
+                        if (reg is NRegister<TimeSpan> tsReg) {
-                                var readout = (await ReadNumRegister(tsReg)).Register.Value;
+                            var lastVal = tsReg.Value;
-                                if (lastVal != readout) {
+                            var readout = (await ReadNumRegister(tsReg)).Register.Value;
-                                    InvokeRegisterChanged(tsReg);
+                            if (lastVal != readout) {
-                                }
+                                InvokeRegisterChanged(tsReg);
                             }
-                            if (reg is BRegister boolReg) {
+                        }
-                                var lastVal = boolReg.Value;
+                        if (reg is BRegister boolReg) {
-                                var readout = (await ReadBoolRegister(boolReg)).Register.Value;
+                            var lastVal = boolReg.Value;
-                                if (lastVal != readout) {
+                            var readout = (await ReadBoolRegister(boolReg)).Register.Value;
-                                    InvokeRegisterChanged(boolReg);
+                            if (lastVal != readout) {
-                                }
+                                InvokeRegisterChanged(boolReg);
                             }
-                            if (reg is SRegister stringReg) {
+                        }
-                                var lastVal = stringReg.Value;
+                        if (reg is SRegister stringReg) {
-                                var readout = (await ReadStringRegister(stringReg)).Register.Value;
+                            var lastVal = stringReg.Value;
-                                if (lastVal != readout) {
+                            var readout = (await ReadStringRegister(stringReg)).Register.Value;
-                                    InvokeRegisterChanged(stringReg);
+                            if (lastVal != readout) {
-                                }
+                                InvokeRegisterChanged(stringReg);
-
                             }
-
                         }
 
-                        getPLCinfoCycleCount++;
+                        iteration++;
 
-                        //invoke cycle polled event
+                        await Task.Delay(pollerDelayMs);
-                        InvokePolledCycleDone();
 
                     }
 
-                }, cTokenAutoUpdater.Token);
+                    pollerIsPaused = !pollerTaskRunning;
 
-            } catch (TaskCanceledException) { }  
+                }
+
+                pollerIsPaused = false;
+
+            });
 
         }
 

MewtocolNet/Mewtocol/MewtocolHelpers.cs

@@ -75,7 +75,7 @@ namespace MewtocolNet {
             var res = new Regex(@"\%([0-9]{2})\$RD.{8}(.*)...").Match(_onString);
             if(res.Success) {
                 string val = res.Groups[2].Value;
-                return val.GetStringFromAsciiHex().Trim();
+                return val.GetStringFromAsciiHex()?.Trim();
             }
             return null;
         }
@@ -143,7 +143,7 @@ namespace MewtocolNet {
 
         internal static string GetStringFromAsciiHex (this string input) {
             if (input.Length % 2 != 0)
-                throw new ArgumentException("input not a hex string");
+                return null;
             byte[] bytes = new byte[input.Length / 2];
             for (int i = 0; i < input.Length; i += 2) {
                 String hex = input.Substring(i, 2);
@@ -158,6 +158,8 @@ namespace MewtocolNet {
         }
 
         internal static byte[] HexStringToByteArray(this string hex) {
+            if (hex == null)
+                return null;
             return Enumerable.Range(0, hex.Length)
                              .Where(x => x % 2 == 0)
                              .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))

MewtocolNet/Mewtocol/MewtocolInterface.cs

@@ -12,13 +12,16 @@ using MewtocolNet.Logging;
 using System.Collections;
 using System.Diagnostics;
 using System.ComponentModel;
+using System.Net;
+using System.Threading;
+using MewtocolNet.Queue;
 
 namespace MewtocolNet {
 
     /// <summary>
     /// The PLC com interface class
     /// </summary>
-    public partial class MewtocolInterface : INotifyPropertyChanged {
+    public partial class MewtocolInterface : INotifyPropertyChanged, IDisposable {
 
         /// <summary>
         /// Gets triggered when the PLC connection was established
@@ -40,6 +43,40 @@ namespace MewtocolNet {
         /// </summary>
         public event PropertyChangedEventHandler PropertyChanged;
 
+        private int connectTimeout = 3000;
+        /// <summary>
+        /// The initial connection timeout in milliseconds
+        /// </summary>
+        public int ConnectTimeout {
+            get { return connectTimeout; }
+            set { connectTimeout = value; }
+        }
+
+        private volatile int pollerDelayMs = 0;
+        /// <summary>
+        /// Delay for each poller cycle in milliseconds, default = 0
+        /// </summary>
+        public int PollerDelayMs {
+            get => pollerDelayMs;
+            set { 
+                pollerDelayMs = value;
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(PollerDelayMs)));
+            }
+        }
+
+        private volatile int queuedMessages;
+        /// <summary>
+        /// Currently queued Messages
+        /// </summary>
+        public int QueuedMessages {
+            get => queuedMessages;
+        }
+
+        /// <summary>
+        /// The host ip endpoint, leave it null to use an automatic interface
+        /// </summary>
+        public IPEndPoint HostEndpoint { get; set; }
+
         private bool isConnected;
         /// <summary>
         /// The current connection state of the interface
@@ -52,6 +89,16 @@ namespace MewtocolNet {
             }
         }
 
+        private bool disposed;
+        /// <summary>
+        /// True if the current interface was disposed
+        /// </summary>
+        public bool Disposed {
+            get { return disposed; }
+            private set { disposed = value; }
+        }
+
+
         private PLCInfo plcInfo;
         /// <summary>
         /// Generic information about the connected PLC
@@ -72,6 +119,10 @@ namespace MewtocolNet {
         private string ip;
         private int port;
         private int stationNumber;
+        private int cycleTimeMs = 25;
+
+        private int bytesTotalCountedUpstream = 0;
+        private int bytesTotalCountedDownstream = 0;
 
         /// <summary>
         /// The current IP of the PLC connection
@@ -86,7 +137,6 @@ namespace MewtocolNet {
         /// </summary>
         public int StationNumber => stationNumber;
 
-        private int cycleTimeMs;
         /// <summary>
         /// The duration of the last message cycle
         /// </summary>
@@ -98,10 +148,39 @@ namespace MewtocolNet {
             }
         }
 
+        private int bytesPerSecondUpstream = 0;
+        /// <summary>
+        /// The current transmission speed in bytes per second
+        /// </summary>
+        public int BytesPerSecondUpstream {
+            get { return bytesPerSecondUpstream; }  
+            private set {
+                bytesPerSecondUpstream = value;
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(BytesPerSecondUpstream)));
+            }
+        }
 
-        internal List<Task> PriorityTasks { get; set; } = new List<Task>();
+        private int bytesPerSecondDownstream = 0;
+        /// <summary>
+        /// The current transmission speed in bytes per second
+        /// </summary>
+        public int BytesPerSecondDownstream {
+            get { return bytesPerSecondDownstream; }
+            private set {
+                bytesPerSecondDownstream = value;
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(BytesPerSecondDownstream)));
+            }
+        }
 
+        internal NetworkStream stream;
+        internal TcpClient client;
+        internal readonly SerialQueue queue = new SerialQueue();
+        private int RecBufferSize = 128;
         internal int SendExceptionsInRow = 0;
+        internal bool ImportantTaskRunning = false;
+
+        private Stopwatch speedStopwatchUpstr;
+        private Stopwatch speedStopwatchDownstr;
 
         #region Initialization
 
@@ -131,7 +210,6 @@ namespace MewtocolNet {
             RegisterChanged += (o) => {
 
                 string address = $"{o.GetRegisterString()}{o.MemoryAdress}".PadRight(5, (char)32);
-                ;
 
                 Logger.Log($"{address} " +
                            $"{(o.Name != null ? $"({o.Name}) " : "")}" +
@@ -196,16 +274,31 @@ namespace MewtocolNet {
         }
 
         /// <summary>
-        /// Closes all permanent polling 
+        /// Changes the connections parameters of the PLC, only applyable when the connection is offline
+        /// </summary>
+        /// <param name="_ip">Ip adress</param>
+        /// <param name="_port">Port number</param>
+        /// <param name="_station">Station number</param>
+        public void ChangeConnectionSettings (string _ip, int _port, int _station = 1) {
+
+            if (IsConnected)
+                throw new Exception("Cannot change the connection settings while the PLC is connected");
+
+            ip = _ip;
+            port = _port;
+            stationNumber = _station;
+
+        }
+
+        /// <summary>
+        /// Closes the connection all cyclic polling 
         /// </summary>
         public void Disconnect () {
 
             if (!IsConnected)
                 return;
 
-            OnMajorSocketException();
+            OnMajorSocketExceptionWhileConnected();
-
-            PriorityTasks.Clear();
 
         }
 
@@ -223,6 +316,87 @@ namespace MewtocolNet {
 
         #endregion
 
+        #region TCP connection state handling
+
+        private async Task ConnectTCP () {
+
+            if (!IPAddress.TryParse(ip, out var targetIP)) {
+                throw new ArgumentException("The IP adress of the PLC was no valid format");
+            }
+
+            try {
+
+                if(HostEndpoint != null) {
+                    
+                    client = new TcpClient(HostEndpoint) {
+                        ReceiveBufferSize = RecBufferSize,
+                        NoDelay = false,
+                    };
+                    var ep = (IPEndPoint)client.Client.LocalEndPoint;
+                    Logger.Log($"Connecting [MAN] endpoint: {ep.Address}:{ep.Port}", LogLevel.Verbose, this);
+
+                } else {
+
+                    client = new TcpClient() {
+                        ReceiveBufferSize = RecBufferSize,
+                        NoDelay = false,
+                        ExclusiveAddressUse = true,
+                    };
+
+                }
+
+                var result = client.BeginConnect(targetIP, port, null, null);
+                var success = result.AsyncWaitHandle.WaitOne(TimeSpan.FromMilliseconds(ConnectTimeout));
+
+                if(!success || !client.Connected) {
+                    OnMajorSocketExceptionWhileConnecting();
+                    return;
+                }
+
+                if(HostEndpoint == null) {
+                    var ep = (IPEndPoint)client.Client.LocalEndPoint;
+                    Logger.Log($"Connecting [AUTO] endpoint: {ep.Address.MapToIPv4()}:{ep.Port}", LogLevel.Verbose, this);
+                }
+
+                stream = client.GetStream();
+                stream.ReadTimeout = 1000;
+
+                await Task.CompletedTask;
+
+            } catch (SocketException) {
+
+                OnMajorSocketExceptionWhileConnecting();
+
+            }
+
+        }
+
+        private void OnMajorSocketExceptionWhileConnecting () {
+
+            Logger.Log("The PLC connection timed out", LogLevel.Error, this);
+            CycleTimeMs = 0;
+            IsConnected = false;
+            KillPoller();
+
+        }
+
+        private void OnMajorSocketExceptionWhileConnected () {
+
+            if (IsConnected) {
+
+                Logger.Log("The PLC connection was closed", LogLevel.Error, this);
+                CycleTimeMs = 0;
+                IsConnected = false;
+                Disconnected?.Invoke();
+                KillPoller();
+                client.Close();
+
+            }
+
+        }
+
+        #endregion
+
         #region Register Collection
 
         /// <summary>
@@ -335,9 +509,12 @@ namespace MewtocolNet {
 
                             var bytes = BitConverter.GetBytes(reg16.Value);
                             BitArray bitAr = new BitArray(bytes);
-                            prop.SetValue(collection, bitAr[bitIndex]);
-                            collection.TriggerPropertyChanged(prop.Name);
 
+                            if (bitIndex < bitAr.Length && bitIndex >= 0) {
+                                prop.SetValue(collection, bitAr[bitIndex]);
+                                collection.TriggerPropertyChanged(prop.Name);
+                            }
+                                
                         } else if (bitWiseFound != null && reg is NRegister<int> reg32) {
                             var casted = (RegisterAttribute)bitWiseFound;
                             var bitIndex = casted.AssignedBitIndex;
@@ -553,29 +730,44 @@ namespace MewtocolNet {
             _msg += "\r";
 
             //send request
+            try {
 
-            string response = null;
+                queuedMessages++;
+                var response = await queue.Enqueue(() => SendSingleBlock(_msg));
+                queuedMessages--;
 
-            if (ContinousReaderRunning) {
+                if (response == null) {
+                    return new CommandResult {
+                        Success = false,
+                        Error = "0000",
+                        ErrorDescription = "null result"
+                    };
+                }
 
-                //if the poller is active then add all messages to a qeueue
+                //error catching
+                Regex errorcheck = new Regex(@"\%[0-9]{2}\!([0-9]{2})", RegexOptions.IgnoreCase);
+                Match m = errorcheck.Match(response.ToString());
+                if (m.Success) {
+                    string eCode = m.Groups[1].Value;
+                    string eDes = Links.LinkedData.ErrorCodes[Convert.ToInt32(eCode)];
+                    Console.ForegroundColor = ConsoleColor.Red;
+                    Console.WriteLine($"Response is: {response}");
+                    Logger.Log($"Error on command {_msg.Replace("\r", "")} the PLC returned error code: {eCode}, {eDes}", LogLevel.Error);
+                    Console.ResetColor();
+                    return new CommandResult {
+                        Success = false,
+                        Error = eCode,
+                        ErrorDescription = eDes
+                    };
+                }
 
-                var awaittask = SendSingleBlock(_msg);
+                return new CommandResult {
-                PriorityTasks.Add(awaittask);
+                    Success = true,
-                await awaittask;
+                    Error = "0000",
+                    Response = response.ToString()
+                };
 
-                PriorityTasks.Remove(awaittask);
+            } catch {
-                response = awaittask.Result;
-
-            } else {
-
-                //poller not active let the user manage message timing
-
-                response = await SendSingleBlock(_msg);
-
-            }
-
-            if (response == null) {
                 return new CommandResult {
                     Success = false,
                     Error = "0000",
@@ -583,112 +775,122 @@ namespace MewtocolNet {
                 };
             }
 
-            //error catching
-            Regex errorcheck = new Regex(@"\%[0-9]{2}\!([0-9]{2})", RegexOptions.IgnoreCase);
-            Match m = errorcheck.Match(response.ToString());
-            if (m.Success) {
-                string eCode = m.Groups[1].Value;
-                string eDes = Links.LinkedData.ErrorCodes[Convert.ToInt32(eCode)];
-                Console.ForegroundColor = ConsoleColor.Red;
-                Console.WriteLine($"Response is: {response}");
-                Console.WriteLine($"Error on command {_msg.Replace("\r", "")} the PLC returned error code: {eCode}, {eDes}");
-                Console.ResetColor();
-                return new CommandResult {
-                    Success = false,
-                    Error = eCode,
-                    ErrorDescription = eDes
-                };
-            }
-
-            return new CommandResult {
-                Success = true,
-                Error = "0000",
-                Response = response.ToString()
-            };
-
         }
 
         private async Task<string> SendSingleBlock (string _blockString) {
 
-            Stopwatch sw = Stopwatch.StartNew();
+            if (client == null || !client.Connected ) {
+                await ConnectTCP();
+            }
 
-            using (TcpClient client = new TcpClient() { ReceiveBufferSize = 64, NoDelay = true, ExclusiveAddressUse = true }) {
+            if (client == null || !client.Connected)
+                return null;
 
-                try {
+            var message = _blockString.ToHexASCIIBytes();
 
-                    await client.ConnectAsync(ip, port);
+            //time measuring
+            if(speedStopwatchUpstr == null) {
+                speedStopwatchUpstr = Stopwatch.StartNew();
+            }
 
-                    using (NetworkStream stream = client.GetStream()) {
+            if(speedStopwatchUpstr.Elapsed.TotalSeconds >= 1) {
+                speedStopwatchUpstr.Restart();
+                bytesTotalCountedUpstream = 0;
+            }
 
-                        var message = _blockString.ToHexASCIIBytes();
+            //send request
-                        var messageAscii = BitConverter.ToString(message).Replace("-", " ");
+            using (var sendStream = new MemoryStream(message)) {
+                await sendStream.CopyToAsync(stream);
+                Logger.Log($"[--------------------------------]", LogLevel.Critical, this);
+                Logger.Log($"--> OUT MSG: {_blockString}", LogLevel.Critical, this);
+            }
 
-                        //send request
+            //calc upstream speed
-                        try {
+            bytesTotalCountedUpstream += message.Length;
-                            using (var sendStream = new MemoryStream(message)) {
+
-                                await sendStream.CopyToAsync(stream);
+            var perSecUpstream = (double)((bytesTotalCountedUpstream / speedStopwatchUpstr.Elapsed.TotalMilliseconds) * 1000);
-                                Logger.Log($"OUT MSG: {_blockString}", LogLevel.Critical, this);
+            if (perSecUpstream <= 10000)
-                                //log message sent
+                BytesPerSecondUpstream = (int)Math.Round(perSecUpstream, MidpointRounding.AwayFromZero);
-                                ASCIIEncoding enc = new ASCIIEncoding();
+
-                                string characters = enc.GetString(message);
+            //await result
-                            }
+            StringBuilder response = new StringBuilder();
-                        } catch (IOException) {
+            try {
-                            Logger.Log($"Critical IO exception on send", LogLevel.Critical, this);
+
-                            return null;
+                byte[] responseBuffer = new byte[128 * 16];
-                        } catch (SocketException) {
+
-                            OnMajorSocketException();
+                bool endLineCode = false;
-                            return null;
+                bool startMsgCode = false;
+
+                while (!endLineCode && !startMsgCode) {
+
+                    do {
+
+                        //time measuring
+                        if (speedStopwatchDownstr == null) {
+                            speedStopwatchDownstr = Stopwatch.StartNew();
                         }
 
-                        //await result
+                        if (speedStopwatchDownstr.Elapsed.TotalSeconds >= 1) {
-                        StringBuilder response = new StringBuilder();
+                            speedStopwatchDownstr.Restart();
-                        try {
+                            bytesTotalCountedDownstream = 0;
-                            byte[] responseBuffer = new byte[256];
-                            do {
-                                int bytes = stream.Read(responseBuffer, 0, responseBuffer.Length);
-                                response.Append(Encoding.UTF8.GetString(responseBuffer, 0, bytes));
-                            }
-                            while (stream.DataAvailable);
-                        } catch (IOException) {
-                            Logger.Log($"Critical IO exception on receive", LogLevel.Critical, this);
-                            return null;
-                        } catch (SocketException) {
-                            OnMajorSocketException();
-                            return null;
                         }
 
-                        sw.Stop();
+                        int bytes = await stream.ReadAsync(responseBuffer, 0, responseBuffer.Length);
-                        var curCycle = (int)sw.ElapsedMilliseconds;
-                        if (Math.Abs(CycleTimeMs - curCycle) > 2) {
-                            CycleTimeMs = curCycle;
-                        }
 
-                        Logger.Log($"IN MSG ({(int)sw.Elapsed.TotalMilliseconds}ms): {response}", LogLevel.Critical, this);
+                        endLineCode = responseBuffer.Any(x => x == 0x0D);
-                        return response.ToString();
+                        startMsgCode = responseBuffer.Count(x => x == 0x25) > 1;
+
+                        if (!endLineCode && !startMsgCode) break;
+
+                        response.Append(Encoding.UTF8.GetString(responseBuffer, 0, bytes));
                     }
-
+                    while (stream.DataAvailable);
-                } catch (SocketException) {
-
-                    OnMajorSocketException();
-                    return null;
 
                 }
 
+            } catch (IOException) {
+                OnMajorSocketExceptionWhileConnected();
+                return null;
+            } catch (SocketException) {
+                OnMajorSocketExceptionWhileConnected();
+                return null;
+            }
+
+            if(!string.IsNullOrEmpty(response.ToString())) {
+                
+                Logger.Log($"<-- IN MSG: {response}", LogLevel.Critical, this);
+
+                bytesTotalCountedDownstream += Encoding.ASCII.GetByteCount(response.ToString());
+
+                var perSecDownstream = (double)((bytesTotalCountedDownstream / speedStopwatchDownstr.Elapsed.TotalMilliseconds) * 1000);
+
+                if(perSecUpstream <= 10000) 
+                    BytesPerSecondDownstream = (int)Math.Round(perSecUpstream, MidpointRounding.AwayFromZero);
+
+                return response.ToString();
+
+            } else {
+                return null;
             }
 
         }
 
-        private void OnMajorSocketException () {
+        #endregion
 
-            if (IsConnected) {
+        #region Disposing
 
-                Logger.Log("The PLC connection was closed", LogLevel.Error, this);
+        /// <summary>
-                CycleTimeMs = 0;
+        /// Disposes the current interface and clears all its members
-                IsConnected = false;
+        /// </summary>
-                Disconnected?.Invoke();
+        public void Dispose () {
-                KillPoller();
 
-            }
+            if (Disposed) return;
+
+            Disconnect();
+
+            GC.SuppressFinalize(this);
+
+            Disposed = true;
 
         }
 
@@ -709,4 +911,5 @@ namespace MewtocolNet {
 
     }
 
+
 }

MewtocolNet/Mewtocol/MewtocolInterfaceRequests.cs

@@ -112,29 +112,47 @@ namespace MewtocolNet {
         /// </summary>
         /// <param name="start">Start adress</param>
         /// <param name="count">Number of bytes to get</param>
+        /// <param name="onProgress">Gets invoked when the progress changes, contains the progress as a double</param>
         /// <returns>A byte array or null of there was an error</returns>
-        public async Task<byte[]> ReadByteRange (int start, int count) {
+        public async Task<byte[]> ReadByteRange (int start, int count, Action<double> onProgress = null) {
 
-            string startStr = start.ToString().PadLeft(5, '0');
+            var byteList = new List<byte>();
+            
             var wordLength = count / 2;
-            bool wasOdd = false;
             if (count % 2 != 0) 
                 wordLength++;
 
-            string endStr = (start + wordLength - 1).ToString().PadLeft(5, '0');
 
-            string requeststring = $"%{GetStationNumber()}#RDD{startStr}{endStr}";
+            //read blocks of max 4 words per msg
-            var result = await SendCommandAsync(requeststring);
+            for (int i = 0; i < wordLength; i+=8) {
 
-            if(result.Success && !string.IsNullOrEmpty(result.Response)) {
+                int curWordStart = start + i;
+                int curWordEnd = curWordStart + 7;
 
-                var bytes = result.Response.ParseDTByteString(wordLength * 4).HexStringToByteArray();
+                string startStr = curWordStart.ToString().PadLeft(5, '0');
+                string endStr = (curWordEnd).ToString().PadLeft(5, '0');
 
-                return bytes.BigToMixedEndian().Take(count).ToArray();
+                string requeststring = $"%{GetStationNumber()}#RDD{startStr}{endStr}";
+                var result = await SendCommandAsync(requeststring);
+
+                if (result.Success && !string.IsNullOrEmpty(result.Response)) {
+
+                    var bytes = result.Response.ParseDTByteString(8 * 4).HexStringToByteArray();
+
+                    if (bytes == null) {
+                        return null;
+                    }
+
+                    byteList.AddRange(bytes.BigToMixedEndian().Take(count).ToArray());
+
+                }
+
+                if(onProgress != null)  
+                    onProgress((double)i / wordLength);
 
             }
 
-            return null;
+            return byteList.ToArray();  
 
         }
 
@@ -176,6 +194,7 @@ namespace MewtocolNet {
         /// Writes to the given bool register on the PLC
         /// </summary>
         /// <param name="_toWrite">The register to write to</param>
+        /// <param name="value">The value to write</param>
         /// <returns>The success state of the write operation</returns>
         public async Task<bool> WriteBoolRegister (BRegister _toWrite, bool value) {
 
@@ -196,7 +215,6 @@ namespace MewtocolNet {
         /// </summary>
         /// <typeparam name="T">Type of number (short, ushort, int, uint, float)</typeparam>
         /// <param name="_toRead">The register to read</param>
-        /// <param name="_stationNumber">Station number to access</param>
         /// <returns>A result with the given NumberRegister containing the readback value and a result struct</returns>
         public async Task<NRegisterResult<T>> ReadNumRegister<T> (NRegister<T> _toRead) {
 
@@ -205,40 +223,47 @@ namespace MewtocolNet {
             string requeststring = $"%{GetStationNumber()}#RD{_toRead.BuildMewtocolIdent()}";
             var result = await SendCommandAsync(requeststring);
 
-            if(!result.Success || string.IsNullOrEmpty(result.Response)) {
+            var failedResult = new NRegisterResult<T> {
-                return new NRegisterResult<T> {
+                Result = result,
-                    Result = result,
+                Register = _toRead
-                    Register = _toRead
+            };
-                };
+
+            if (!result.Success || string.IsNullOrEmpty(result.Response)) {
+                return failedResult;
             }
                 
             if (numType == typeof(short)) {
 
                 var resultBytes = result.Response.ParseDTByteString(4).ReverseByteOrder();
+                if (resultBytes == null) return failedResult;
                 var val = short.Parse(resultBytes, NumberStyles.HexNumber);
                 _toRead.SetValueFromPLC(val);
 
             } else if (numType == typeof(ushort)) {
 
                 var resultBytes = result.Response.ParseDTByteString(4).ReverseByteOrder();
+                if (resultBytes == null) return failedResult;
                 var val = ushort.Parse(resultBytes, NumberStyles.HexNumber);
                 _toRead.SetValueFromPLC(val);
 
             } else if (numType == typeof(int)) {
 
                 var resultBytes = result.Response.ParseDTByteString(8).ReverseByteOrder();
+                if (resultBytes == null) return failedResult;
                 var val = int.Parse(resultBytes, NumberStyles.HexNumber);
                 _toRead.SetValueFromPLC(val);
 
             } else if (numType == typeof(uint)) {
 
                 var resultBytes = result.Response.ParseDTByteString(8).ReverseByteOrder();
+                if (resultBytes == null) return failedResult;
                 var val = uint.Parse(resultBytes, NumberStyles.HexNumber);
                 _toRead.SetValueFromPLC(val);
 
             } else if (numType == typeof(float)) {
 
                 var resultBytes = result.Response.ParseDTByteString(8).ReverseByteOrder();
+                if (resultBytes == null) return failedResult;
                 //convert to unsigned int first
                 var val = uint.Parse(resultBytes, NumberStyles.HexNumber);
 
@@ -250,6 +275,7 @@ namespace MewtocolNet {
             } else if (numType == typeof(TimeSpan)) {
 
                 var resultBytes = result.Response.ParseDTByteString(8).ReverseByteOrder();
+                if (resultBytes == null) return failedResult;
                 //convert to unsigned int first
                 var vallong = long.Parse(resultBytes, NumberStyles.HexNumber);
                 var valMillis = vallong * 10;
@@ -273,7 +299,7 @@ namespace MewtocolNet {
         /// </summary>
         /// <typeparam name="T">Type of number (short, ushort, int, uint, float)</typeparam>
         /// <param name="_toWrite">The register to write</param>
-        /// <param name="_stationNumber">Station number to access</param>
+        /// <param name="_value">The value to write</param>
         /// <returns>The success state of the write operation</returns>
         public async Task<bool> WriteNumRegister<T> (NRegister<T> _toWrite, T _value) {
 

MewtocolNet/Mewtocol/PLCMode.cs

@@ -6,13 +6,38 @@ namespace MewtocolNet.Registers {
     /// All modes
     /// </summary>
     public class PLCMode {
+
+        /// <summary>
+        /// PLC is running
+        /// </summary>
         public bool RunMode { get; set; }
+        /// <summary>
+        /// PLC is in test
+        /// </summary>
         public bool TestRunMode { get; set; }
+        /// <summary>
+        /// BreakExcecuting
+        /// </summary>
         public bool BreakExcecuting { get; set; }
+        /// <summary>
+        /// BreakValid
+        /// </summary>
         public bool BreakValid { get; set; }
+        /// <summary>
+        /// PLC output is enabled
+        /// </summary>
         public bool OutputEnabled { get; set; }
+        /// <summary>
+        /// PLC runs step per step
+        /// </summary>
         public bool StepRunMode { get; set; }
+        /// <summary>
+        /// Message executing
+        /// </summary>
         public bool MessageExecuting { get; set; }
+        /// <summary>
+        /// PLC is in remote mode
+        /// </summary>
         public bool RemoteMode { get; set; }
 
         /// <summary>

MewtocolNet/Mewtocol/RegisterAttributes/RegisterAttribute.cs

@@ -6,22 +6,39 @@ using System.Threading.Tasks;
 
 namespace MewtocolNet.RegisterAttributes {
 
+    /// <summary>
+    /// The size of the bitwise register
+    /// </summary>
     public enum BitCount {
+        /// <summary>
+        /// 16 bit
+        /// </summary>
         B16,
+        /// <summary>
+        /// 32 bit
+        /// </summary>
         B32
     }
 
+    /// <summary>
+    /// Defines the behavior of a register property
+    /// </summary>
     [AttributeUsage(AttributeTargets.Property)]
     public class RegisterAttribute : Attribute {
 
-        public int MemoryArea;
+        internal int MemoryArea;
-        public int StringLength;
+        internal int StringLength;
-        public RegisterType RegisterType;
+        internal RegisterType RegisterType;
-        public SpecialAddress SpecialAddress = SpecialAddress.None;
+        internal SpecialAddress SpecialAddress = SpecialAddress.None;
-        public BitCount BitCount;
+        internal BitCount BitCount;
-        public int AssignedBitIndex = -1;
+        internal int AssignedBitIndex = -1;
 
 
+        /// <summary>
+        /// Attribute for string type or numeric registers 
+        /// </summary>
+        /// <param name="memoryArea">The area in the plcs memory</param>
+        /// <param name="stringLength">The max string length in the plc</param>
         public RegisterAttribute (int memoryArea, int stringLength = 1) {
 
             MemoryArea = memoryArea;
@@ -29,6 +46,11 @@ namespace MewtocolNet.RegisterAttributes {
 
         }
 
+        /// <summary>
+        /// Attribute for boolean registers
+        /// </summary>
+        /// <param name="memoryArea">The area in the plcs memory</param>
+        /// <param name="type">The type of boolean register</param>
         public RegisterAttribute (int memoryArea, RegisterType type) {
 
             if (type.ToString().StartsWith("DT"))
@@ -40,6 +62,11 @@ namespace MewtocolNet.RegisterAttributes {
 
         }
 
+        /// <summary>
+        /// Attribute for boolean registers
+        /// </summary>
+        /// <param name="spAdress">The special area in the plcs memory</param>
+        /// <param name="type">The type of boolean register</param>
         public RegisterAttribute (RegisterType type, SpecialAddress spAdress) {
 
             if (type.ToString().StartsWith("DT"))
@@ -50,7 +77,11 @@ namespace MewtocolNet.RegisterAttributes {
 
         }
 
-
+        /// <summary>
+        /// Attribute to read numeric registers as bitwise
+        /// </summary>
+        /// <param name="memoryArea">The area in the plcs memory</param>
+        /// <param name="bitcount">The number of bits to parse</param>
         public RegisterAttribute (int memoryArea, BitCount bitcount) {
 
             MemoryArea = memoryArea;
@@ -59,6 +90,12 @@ namespace MewtocolNet.RegisterAttributes {
 
         }
 
+        /// <summary>
+        /// Attribute to read numeric registers as bitwise
+        /// </summary>
+        /// <param name="memoryArea">The area in the plcs memory</param>
+        /// <param name="bitcount">The number of bits to parse</param>
+        /// <param name="assignBit">The index of the bit that gets linked to the bool</param>
         public RegisterAttribute (int memoryArea, uint assignBit, BitCount bitcount) {
 
             if(assignBit > 15 && bitcount == BitCount.B16) {

MewtocolNet/Mewtocol/RegisterAttributes/RegisterCollectionBase.cs

@@ -34,8 +34,17 @@ namespace MewtocolNet.RegisterAttributes {
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
         }
 
+        /// <summary>
+        /// Gets called when the register collection base was linked to its parent mewtocol interface
+        /// </summary>
+        /// <param name="plc">The parent interface</param>
         public virtual void OnInterfaceLinked (MewtocolInterface plc) { }
 
+        /// <summary>
+        /// Gets called when the register collection base was linked to its parent mewtocol interface
+        /// and the plc connection is established
+        /// </summary>
+        /// <param name="plc">The parent interface</param>
         public virtual void OnInterfaceLinkedAndOnline (MewtocolInterface plc) { }
 
     }

MewtocolNet/Mewtocol/Subregisters/BRegister.cs

@@ -12,8 +12,7 @@ namespace MewtocolNet.Registers {
         internal RegisterType RegType { get; private set; }     
         internal SpecialAddress SpecialAddress { get; private set; }        
 
-        public bool NeedValue;
+        internal bool LastValue;
-        public bool LastValue;
 
         /// <summary>
         /// The value of the register
@@ -54,6 +53,9 @@ namespace MewtocolNet.Registers {
 
         }
 
+        /// <summary>
+        /// Builds the register area name
+        /// </summary>
         public override string BuildMewtocolIdent () {
 
             //build area code from register type
@@ -73,9 +75,7 @@ namespace MewtocolNet.Registers {
             TriggerChangedEvnt(this);
             TriggerNotifyChange();
         }
-        public override string ToString() {
+
-            return $"Adress: {MemoryAdress} Val: {Value}";
-        }
     }
 
 }

MewtocolNet/Mewtocol/Subregisters/BRegisterResult.cs

@@ -1,13 +1,20 @@
 namespace MewtocolNet.Registers {
+
+    /// <summary>
+    /// Result for a boolean register
+    /// </summary>
     public class BRegisterResult {
 
+        /// <summary>
+        /// The command result
+        /// </summary>
         public CommandResult Result { get; set; }
+
+        /// <summary>
+        /// The used register
+        /// </summary>
         public BRegister Register { get; set; }
 
-        public override string ToString() {
-            string errmsg = Result.Success ? "" : $", Error [{Result.ErrorDescription}]";
-            return $"Result [{Result.Success}], Register [{Register.ToString()}]{errmsg}";
-        }
-
     }
+
 }

MewtocolNet/Mewtocol/Subregisters/NRegister.cs

@@ -7,8 +7,7 @@ namespace MewtocolNet.Registers {
     /// <typeparam name="T">The type of the numeric value</typeparam>
     public class NRegister<T> : Register {
 
-        public T NeedValue;
+        internal T LastValue;
-        public T LastValue;
 
         /// <summary>
         /// The value of the register
@@ -78,10 +77,6 @@ namespace MewtocolNet.Registers {
             TriggerNotifyChange();
         }
 
-        public override string ToString() {
-            return $"Adress: {MemoryAdress} Val: {Value}";
-        }
-
     }
 
 

MewtocolNet/Mewtocol/Subregisters/NRegisterResult.cs

@@ -6,13 +6,16 @@ namespace MewtocolNet.Registers {
     /// </summary>
     /// <typeparam name="T">The type of the numeric value</typeparam>
     public class NRegisterResult<T> {
-        public CommandResult Result { get; set; }
-        public NRegister<T> Register { get; set; }
 
-        public override string ToString() {
+        /// <summary>
-            string errmsg = Result.Success ? "" : $", Error [{Result.ErrorDescription}]";
+        /// Command result
-            return $"Result [{Result.Success}], Register [{Register.ToString()}]{errmsg}";
+        /// </summary>
-        }
+        public CommandResult Result { get; set; }
+
+        /// <summary>
+        /// The used register
+        /// </summary>
+        public NRegister<T> Register { get; set; }
 
         /// <summary>
         /// Trys to get the value of there is one

MewtocolNet/Mewtocol/Subregisters/Register.cs

@@ -75,6 +75,9 @@ namespace MewtocolNet.Registers {
             };
         }
 
+        /// <summary>
+        /// Builds the register area name
+        /// </summary>
         public virtual string BuildMewtocolIdent() {
 
             StringBuilder asciistring = new StringBuilder("D");
@@ -112,9 +115,14 @@ namespace MewtocolNet.Registers {
         public string GetValueString () {
 
             if (enumType != null && this is NRegister<int> intEnumReg) {
+
                 var dict = new Dictionary<int, string>();
+
                 foreach (var name in Enum.GetNames(enumType)) {
-                    dict.Add((int)Enum.Parse(enumType, name), name);
+                    int enumKey = (int)Enum.Parse(enumType, name);
+                    if(!dict.ContainsKey(enumKey)) {
+                        dict.Add(enumKey, name);
+                    }
                 }
 
                 if(dict.ContainsKey(intEnumReg.Value)) {
@@ -122,6 +130,7 @@ namespace MewtocolNet.Registers {
                 } else {
                     return $"{intEnumReg.Value} (Missing Enum)";
                 }   
+
             }
             if (this is NRegister<short> shortReg) {
                 return $"{shortReg.Value}{(isUsedBitwise ? $" [{shortReg.GetBitwise().ToBitString()}]" : "")}";
@@ -145,7 +154,7 @@ namespace MewtocolNet.Registers {
                 return boolReg.Value.ToString();
             }
             if (this is SRegister stringReg) {
-                return stringReg.Value.ToString();
+                return stringReg.Value ?? "";
             }
 
             return "Type of the register is not supported.";
@@ -178,6 +187,9 @@ namespace MewtocolNet.Registers {
 
         }
 
+        /// <summary>
+        /// Gets the register dataarea string DT for 16bit and DDT for 32 bit types
+        /// </summary>
         public string GetRegisterString () {
 
             if (this is NRegister<short> shortReg) {

MewtocolNet/Mewtocol/Subregisters/SRegister.cs

@@ -9,9 +9,12 @@ namespace MewtocolNet.Registers {
 
         private string lastVal = "";
 
+        /// <summary>
+        /// The current value of the register
+        /// </summary>
         public string Value => lastVal;
 
-        public short ReservedSize { get; set; }
+        internal short ReservedSize { get; set; }
 
         /// <summary>
         /// Defines a register containing a string
@@ -32,10 +35,9 @@ namespace MewtocolNet.Registers {
             memoryLength = (int)Math.Round(wordsize + 1);
         }
 
-        public override string ToString() {
+        /// <summary>
-            return $"Adress: {MemoryAdress} Val: {Value}";
+        /// Builds the register identifier for the mewotocol protocol
-        }
+        /// </summary>
-
         public override string BuildMewtocolIdent() {
 
             StringBuilder asciistring = new StringBuilder("D");
@@ -65,7 +67,6 @@ namespace MewtocolNet.Registers {
             TriggerNotifyChange();
         }
 
-
     }
 
 }

MewtocolNet/Mewtocol/Subregisters/SRegisterResult.cs

@@ -1,15 +1,19 @@
 namespace MewtocolNet.Registers {
+
+    /// <summary>
+    /// The results of a string register operation
+    /// </summary>
     public class SRegisterResult {
+
+        /// <summary>
+        /// The command result
+        /// </summary>
         public CommandResult Result { get; set; }
+        /// <summary>
+        /// The register definition used
+        /// </summary>
         public SRegister Register { get; set; }
 
-        public override string ToString() {
-            string errmsg = Result.Success ? "" : $", Error [{Result.ErrorDescription}]";
-            return $"Result [{Result.Success}], Register [{Register.ToString()}]{errmsg}";
-        }
     }
 
-
-
-
 }

MewtocolNet/MewtocolNet.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <PackageId>MewtocolNet</PackageId>
-    <Version>0.4.3</Version>
+    <Version>0.5.8</Version>
     <Authors>Felix Weiss</Authors>
     <Company>Womed</Company>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>

MewtocolNet/Queue/SerialQueue.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Threading.Tasks;
+
+namespace MewtocolNet.Queue {
+
+    internal class SerialQueue {
+
+        readonly object _locker = new object();
+        readonly WeakReference<Task> _lastTask = new WeakReference<Task>(null);
+
+        internal Task<T> Enqueue<T> (Func<Task<T>> asyncFunction) {
+            lock (_locker) {
+                Task lastTask;
+                Task<T> resultTask;
+
+                if (_lastTask.TryGetTarget(out lastTask)) {
+                    resultTask = lastTask.ContinueWith(_ => asyncFunction(), TaskContinuationOptions.ExecuteSynchronously).Unwrap();
+                } else {
+                    resultTask = Task.Run(asyncFunction);
+                }
+
+                _lastTask.SetTarget(resultTask);
+
+                return resultTask;
+            }
+        }
+
+    }
+
+}

README.md

@@ -28,7 +28,7 @@ This software was written by WOLF Medizintechnik GmbH (@WOmed/dev).
 
 ## .NET Support
 
-This library was written in **netstandard2.0** and should by compatible with a lot of .NET environments.
+This library was written in **netstandard2.0** and should be compatible with a lot of .NET environments.
 
 For a full list of supported .NET clrs see [this page](https://docs.microsoft.com/de-de/dotnet/standard/net-standard?tabs=net-standard-2-0#select-net-standard-version)
 
@@ -53,7 +53,7 @@ Where is the RS232/Serial support?
 
 Install this package by using [Nuget](https://www.nuget.org/packages/MewtocolNet/) or reference 
 ```XML
-<PackageReference Include="MewtocolNet" Version="0.4.2" />
+<PackageReference Include="MewtocolNet" Version="0.5.2" />
 ```
 in your dependencies.
 Alternatively use the dotnet CLI and run