添加功能码，并添加可以选择读写耗时时间

ModbusDemo/Device/ModbusRTU.cs

@@ -25,7 +25,7 @@ namespace ModbusDemo.Device
         {
             _serialPort = serialPort;
             _modbusDbContext = modbusDbContext;
-            _portAdapter = new SerialPortAdapter(serialPort);
+            //_portAdapter = new SerialPortAdapter(serialPort);
         }
         /// <summary>
         /// 用来发送读写线圈的指令
@@ -63,11 +63,20 @@ namespace ModbusDemo.Device
             int attempt = 0;
             byte[] response = null;
             List<byte> responseData = new List<byte>();
-            _serialPort.Write(sendByte, 0, sendByte.Length);
+
             while (attempt < maxRetries)
             {
+                if (_serialPort.IsOpen)
+                {
+                    // 每次重试前清空缓冲区
+                    responseData.Clear();
+                    // 清除输入缓冲区残留数据
+                    _serialPort.DiscardInBuffer();
+                }
+                
                 try
                 {
+                    _serialPort.Write(sendByte, 0, sendByte.Length);
                     //使用时间去轮询查询数据
                     DateTime startTime = DateTime.Now;
                     while ((DateTime.Now - startTime).TotalMilliseconds < _serialPort.ReadTimeout)
@@ -80,11 +89,12 @@ namespace ModbusDemo.Device
                             responseData.AddRange(buffer.Take(bytesRead));
                         }
                         //延迟20毫秒，节约cpu资源
-                        Task.Delay(20);
+                        Thread.Sleep(20);
                     }
                     response = responseData.ToArray();
-                    if (response[0] == 0x00)
+                    if (response.Length == 0)
                     {
+                        attempt++;
                         continue;
                     }
                     resultValue = ParseCoilresponse(sendByte, response, numberOfPoints);
@@ -93,6 +103,10 @@ namespace ModbusDemo.Device
                 catch (Exception)
                 {
 
+
+                }
+                finally
+                {
                     attempt++;
                 }
 
@@ -112,7 +126,7 @@ namespace ModbusDemo.Device
             catch (Exception)
             {
 
-                MessageBox.Show("0x15:数据库插入错误");
+                MessageBox.Show(ErrorCode.ErrorCode.DatabaseException.ToString());
             }
 
             return resultValue;
@@ -132,17 +146,17 @@ namespace ModbusDemo.Device
                 //将操作的指令，插入数据库
                 string RequestStr = ByteArrayToString(sendByte);
                 string responseStr = ByteArrayToString(response);
-                ModbusLog m = new ModbusLog();
-                m.OperationType = "读线圈";
-                m.ResponseData = responseStr;
-                m.RequestData = RequestStr;
-                _modbusDbContext.Add(m);
+                ModbusLog modbusLog = new ModbusLog();
+                modbusLog.OperationType = "读线圈";
+                modbusLog.ResponseData = responseStr;
+                modbusLog.RequestData = RequestStr;
+                _modbusDbContext.Add(modbusLog);
                 _modbusDbContext.SaveChanges();
             }
             catch (Exception)
             {
 
-                MessageBox.Show("0x15:数据库插入错误");
+                MessageBox.Show(ErrorCode.ErrorCode.DatabaseException.ToString());
             }
 
 
@@ -222,11 +236,19 @@ namespace ModbusDemo.Device
             int attempt = 0;
             byte[] response = null;
             List<byte> responseData = new List<byte>();
-            _serialPort.Write(sendByte, 0, sendByte.Length);
+
             while (attempt < maxRetries)
             {
+                if (_serialPort.IsOpen)
+                {
+                    // 每次重试前清空缓冲区
+                    responseData.Clear();
+                    // 清除输入缓冲区残留数据
+                    _serialPort.DiscardInBuffer();
+                }
                 try
                 {
+                    _serialPort.Write(sendByte, 0, sendByte.Length);
                     //使用时间去轮询查询数据
                     DateTime startTime = DateTime.Now;
                     while ((DateTime.Now - startTime).TotalMilliseconds < _serialPort.ReadTimeout)
@@ -239,10 +261,10 @@ namespace ModbusDemo.Device
                             responseData.AddRange(buffer.Take(bytesRead));
                         }
                         //延迟20毫秒，节约cpu资源
-                        Task.Delay(20);
+                        Thread.Sleep(20);
                     }
                     response = responseData.ToArray();
-                    if (response[0] != 0x00)
+                    if (response.Length != 0)
                     {
                         break;
                     }
@@ -250,6 +272,10 @@ namespace ModbusDemo.Device
                 catch (Exception)
                 {
 
+
+                }
+                finally
+                {
                     attempt++;
                 }
 
@@ -260,16 +286,16 @@ namespace ModbusDemo.Device
                 //将操作的指令，插入数据库
                 string RequestStr = ByteArrayToString(sendByte);
                 string responseStr = ByteArrayToString(response);
-                ModbusLog m = new ModbusLog();
-                m.OperationType = "写线圈";
-                m.ResponseData = responseStr;
-                m.RequestData = RequestStr;
-                _modbusDbContext.Add(m);
+                ModbusLog modbusLog = new ModbusLog();
+                modbusLog.OperationType = "写线圈";
+                modbusLog.ResponseData = responseStr;
+                modbusLog.RequestData = RequestStr;
+                _modbusDbContext.Add(modbusLog);
                 _modbusDbContext.SaveChanges();
             }
             catch (Exception)
             {
-                MessageBox.Show("0x15:数据库插入错误");
+                MessageBox.Show(ErrorCode.ErrorCode.DatabaseException.ToString());
 
             }
             //判断发送回来的数据是否正确
@@ -334,12 +360,18 @@ namespace ModbusDemo.Device
             int attempt = 0;
             List<byte> responseData = new List<byte>();
             byte[] response = null;
-            _serialPort.Write(sendByte, 0, sendByte.Length);
             while (attempt < maxRetries)
             {
+                if (_serialPort.IsOpen)
+                {
+                    // 每次重试前清空缓冲区
+                    responseData.Clear();
+                    // 清除输入缓冲区残留数据
+                    _serialPort.DiscardInBuffer();
+                }
                 try
                 {
-
+                    _serialPort.Write(sendByte, 0, sendByte.Length);
                     //使用时间去轮询查询数据
                     DateTime startTime = DateTime.Now;
                     while ((DateTime.Now - startTime).TotalMilliseconds < _serialPort.ReadTimeout)
@@ -352,10 +384,10 @@ namespace ModbusDemo.Device
                             responseData.AddRange(buffer.Take(bytesRead));
                         }
                         //延迟20毫秒，节约cpu资源
-                        Task.Delay(20);
+                        Thread.Sleep(20);
                     }
                     response = responseData.ToArray();
-                    if (response[0] == 0x00)
+                    if (response.Length == 0)
                     {
                         continue;
                     }
@@ -365,26 +397,31 @@ namespace ModbusDemo.Device
                 catch (Exception)
                 {
 
+
+                }
+                finally
+                {
                     attempt++;
                 }
 
             }
-            //将操作失败的指令，插入数据库
-            string RequestStr = ByteArrayToString(sendByte);
+
 
             try
             {
-                ModbusLog m = new ModbusLog();
-                m.OperationType = "读寄存器";
-                m.ResponseData = "";
-                m.RequestData = RequestStr;
-                _modbusDbContext.Add(m);
+                //将操作失败的指令，插入数据库
+                string RequestStr = ByteArrayToString(sendByte);
+                ModbusLog modbusLog = new ModbusLog();
+                modbusLog.OperationType = "读寄存器";
+                modbusLog.ResponseData = "";
+                modbusLog.RequestData = RequestStr;
+                _modbusDbContext.Add(modbusLog);
                 _modbusDbContext.SaveChanges();
             }
             catch (Exception)
             {
 
-                MessageBox.Show("0x15:数据库插入错误");
+                MessageBox.Show(ErrorCode.ErrorCode.DatabaseException.ToString());
             }
 
             return resultValue;
@@ -406,16 +443,16 @@ namespace ModbusDemo.Device
                 //将操作的指令，插入数据库
                 string RequestStr = ByteArrayToString(sendByte);
                 string responseStr = ByteArrayToString(response);
-                ModbusLog m = new ModbusLog();
-                m.OperationType = "读寄存器";
-                m.ResponseData = responseStr;
-                m.RequestData = RequestStr;
-                _modbusDbContext.Add(m);
+                ModbusLog modbusLog = new ModbusLog();
+                modbusLog.OperationType = "读寄存器";
+                modbusLog.ResponseData = responseStr;
+                modbusLog.RequestData = RequestStr;
+                _modbusDbContext.Add(modbusLog);
                 _modbusDbContext.SaveChanges();
             }
             catch (Exception)
             {
-                MessageBox.Show("0x15:数据库插入错误");
+                MessageBox.Show(ErrorCode.ErrorCode.DatabaseException.ToString());
 
             }
 
@@ -493,11 +530,19 @@ namespace ModbusDemo.Device
             int attempt = 0;
             byte[] response = null;
             List<byte> responseData = new List<byte>();
-            _serialPort.Write(sendByte, 0, sendByte.Length);
+
             while (attempt < maxRetries)
             {
+                if (_serialPort.IsOpen)
+                {
+                    // 每次重试前清空缓冲区
+                    responseData.Clear();
+                    // 清除输入缓冲区残留数据
+                    _serialPort.DiscardInBuffer();
+                }
                 try
                 {
+                    _serialPort.Write(sendByte, 0, sendByte.Length);
                     //使用时间去轮询查询数据
                     DateTime startTime = DateTime.Now;
                     while ((DateTime.Now - startTime).TotalMilliseconds < _serialPort.ReadTimeout)
@@ -510,15 +555,19 @@ namespace ModbusDemo.Device
                             responseData.AddRange(buffer.Take(bytesRead));
                         }
                         //延迟20毫秒，节约cpu资源
-                        Task.Delay(20);
+                        Thread.Sleep(20);
                     }
                     response = responseData.ToArray();
-                    if (response[0] != 0x00)
+                    if (response.Length != 0)
                     {
                         break;
                     }
                 }
                 catch (Exception)
+                {
+
+                }
+                finally
                 {
                     attempt++;
                 }
@@ -528,11 +577,11 @@ namespace ModbusDemo.Device
                 //将操作的指令，插入数据库
                 string RequestStr = ByteArrayToString(sendByte);
                 string responseStr = ByteArrayToString(response);
-                ModbusLog m = new ModbusLog();
-                m.OperationType = "写寄存器";
-                m.ResponseData = responseStr;
-                m.RequestData = RequestStr;
-                _modbusDbContext.Add(m);
+                ModbusLog modbusLog = new ModbusLog();
+                modbusLog.OperationType = "写寄存器";
+                modbusLog.ResponseData = responseStr;
+                modbusLog.RequestData = RequestStr;
+                _modbusDbContext.Add(modbusLog);
                 _modbusDbContext.SaveChanges();
             }
             catch (Exception)

ModbusDemo/ErrorCode/ErrorCode.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ModbusDemo.ErrorCode
+{
+    public class ErrorCode
+    {
+
+        // 静态列表：存储所有错误码
+        public static readonly List<ErrorCode> AllErrors = new List<ErrorCode>();
+
+        // 错误码值
+        public byte Code { get; }
+
+        // 错误描述
+        public string Description { get; }
+
+        // 私有构造函数，只能通过静态方法创建错误码
+        private ErrorCode(byte code, string description)
+        {
+            Code = code;
+            Description = description;
+
+            // 自动添加到错误码列表
+            AllErrors.Add(this);
+        }
+
+        // 重写 ToString 方法
+        public override string ToString() => $"Error 0x{Code:X2}: {Description}";
+
+        // 隐式转换为 byte
+        public static implicit operator byte(ErrorCode error) => error.Code;
+
+        // 根据错误码值查找错误码
+        public static ErrorCode FromByte(byte code) => AllErrors.FirstOrDefault(e => e.Code == code);
+
+        // 定义所有错误码
+        public static readonly ErrorCode FunctionCodeError = new ErrorCode(0x01, "功能码错误");
+        public static readonly ErrorCode DomainStartAddressError = new ErrorCode(0x02, "域数据首地址错误");
+        public static readonly ErrorCode DataContentError = new ErrorCode(0x03, "数据内容错误");
+        public static readonly ErrorCode DataTypeError = new ErrorCode(0x10, "数据类型错误");
+        public static readonly ErrorCode DomainDataCountError = new ErrorCode(0x11, "域数据个数错误");
+        public static readonly ErrorCode DataCountMismatch = new ErrorCode(0x12, "数据个数与内部区域数据个数不符");
+        public static readonly ErrorCode WriteOperationDenied = new ErrorCode(0x13, "不能进行写操作");
+        public static readonly ErrorCode CrcCheckError = new ErrorCode(0x14, "CRC校验错误");
+        public static readonly ErrorCode DatabaseException = new ErrorCode(0x15, "数据库异常");
+    }
+
+}

ModbusDemo/Extension/EnumBindingSourceExtension.cs

@@ -4,7 +4,8 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Markup;
-
+using System;
+using System.Reflection;
 namespace ModbusDemo.Extension
 {
     /// <summary>

ModbusDemo/ModbusDemo.csproj

@@ -9,6 +9,11 @@
     <ApplicationIcon>ModbusRTU_64x64.ico</ApplicationIcon>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Compile Remove="ErrorCode\ErrorCodeExtensions.cs" />
+    <Compile Remove="ErrorCode\ErrorInfoAttribute.cs" />
+  </ItemGroup>
+
   <ItemGroup>
     <Content Include="ModbusRTU_64x64.ico">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>

ModbusDemo/Model/ErrorCode.cs

@@ -0,0 +1,10 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ModbusDemo.Model
+{
+    
+}

ModbusDemo/Uitls/CheckData.cs

@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
-
+using ModbusDemo.ErrorCode;
 namespace ModbusDemo.Uitls
 {
     public static class CheckData
@@ -32,7 +32,9 @@ namespace ModbusDemo.Uitls
                 // 判断高4位是否等于8
                 if (highNibble == 8)
                 {
-                    MessageBox.Show($"数据错误：错误码为：0x{response[2]:X2}");
+                    var error = ErrorCode.ErrorCode.FromByte(response[2]);
+                    
+                    MessageBox.Show(error.ToString());
                     return false;
                 }
             }
@@ -40,7 +42,7 @@ namespace ModbusDemo.Uitls
 
             if (!CRCUitl.ValidateCRC(response))
             {
-                MessageBox.Show("0x14:CRC校验错误");
+                MessageBox.Show(ErrorCode.ErrorCode.CrcCheckError.ToString());
                 return false;
             }
 

ModbusDemo/VIew/SettingsUC.xaml

@@ -31,7 +31,6 @@
             <RowDefinition>
             </RowDefinition>
         </Grid.RowDefinitions>
-
         <Grid Grid.Row="1">
             <Grid.ColumnDefinitions>
                 <ColumnDefinition>
@@ -44,7 +43,8 @@
                 </ColumnDefinition>
                 <ColumnDefinition>
                 </ColumnDefinition>
-
+                <ColumnDefinition>
+                </ColumnDefinition>
             </Grid.ColumnDefinitions>
             <!--  这是设置串口的选择  -->
             <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
@@ -131,6 +131,32 @@
                 </ComboBox>
             </StackPanel>
 
+            <!--  超时时间  -->
+            <StackPanel Grid.Column="5" HorizontalAlignment="Center" VerticalAlignment="Center">
+                <TextBlock Margin="10,0,0,5" Text="超时时间">
+                </TextBlock>
+                <ComboBox
+                    Width="80"
+                    Height="30"
+                    Margin="10,0,0,5"
+                    HorizontalAlignment="Left"
+                    materialDesign:HintAssist.Hint="200"
+                    SelectedItem="{Binding TimeOut}">
+                    <ComboBoxItem Content="20">
+                    </ComboBoxItem>
+                    <ComboBoxItem Content="50">
+                    </ComboBoxItem>
+                    <ComboBoxItem Content="100">
+                    </ComboBoxItem>
+                    <ComboBoxItem Content="200">
+                    </ComboBoxItem>
+                    <ComboBoxItem Content="300">
+                    </ComboBoxItem>
+                    <ComboBoxItem Content="500">
+                    </ComboBoxItem>
+                </ComboBox>
+            </StackPanel>
+
         </Grid>
         <!--  两个按钮的定义  -->
         <Grid Grid.Row="2">

ModbusDemo/VIewModel/AttachUCViewModel.cs

@@ -50,7 +50,7 @@ namespace ModbusDemo.VIewModel
         }
         public AttachUCViewModel(SerialPort serialPort)
         {
-            ReadOddRegisterCmm = new DelegateCommand(ReadOddRegister);
+            ReadOddRegisterCmm = new DelegateCommand(ReadOddRegister2);
             _serialPort = serialPort;
         }
         /// <summary>
@@ -124,18 +124,18 @@ namespace ModbusDemo.VIewModel
                 ushort currentChunkSize = 100;
 
                 int chunkIndex = i;
-                tasks[i] = Task.Run(async () =>
-                {
+               
+                
 
-                    ushort[] registers = await ReadRegisters(slaveId, startAddress, currentChunkSize);
+                    ushort[] registers =  ReadRegisters(slaveId, startAddress, currentChunkSize);
                     Array.Copy(registers, 0, allRegisters, chunkIndex * chunkSize, currentChunkSize);
 
 
-                });
+                
             }
 
             // 等待所有任务完成
-            Task.WaitAll(tasks);
+            
             Time = (int)(DateTime.Now - startTime).TotalMilliseconds;
             StringBuilder result = new StringBuilder();
             int count = 0;
@@ -151,27 +151,25 @@ namespace ModbusDemo.VIewModel
             ReadResult = result.ToString();
         }
 
-
-        public async Task<ushort[]> ReadRegisters(byte slaveAddress, ushort startAddress, ushort numberOfPoints)
+        public ushort[] ReadRegisters(byte slaveAddress, ushort startAddress, ushort numberOfPoints)
         {
-
             ushort[] resultValue = null;
             if (!_serialPort.IsOpen)
             {
                 MessageBox.Show("串口没有链接，请先链接");
                 return resultValue;
             }
-            List<byte> sendByteList = new List<byte>();
-            //设置从站地址
-            sendByteList.Add(slaveAddress);
-            //设置功能码
-            sendByteList.Add(0x03);
-            //设置起始地址的高位和低位
-            sendByteList.Add(BitConverter.GetBytes(startAddress)[1]);
-            sendByteList.Add(BitConverter.GetBytes(startAddress)[0]);
-            //设置读取几个线圈的高位和低位
-            sendByteList.Add(BitConverter.GetBytes(numberOfPoints)[1]);
-            sendByteList.Add(BitConverter.GetBytes(numberOfPoints)[0]);
+            var sendByteList = new List<byte>(8)
+            {
+                slaveAddress,        // 从站地址
+                0x03,                // 功能码：读保持寄存器
+            };
+
+            // 添加起始地址（高字节在前）
+            sendByteList.AddRange(BitConverter.GetBytes(startAddress).Reverse());
+
+            // 添加读取点数（高字节在前）
+            sendByteList.AddRange(BitConverter.GetBytes(numberOfPoints).Reverse());
             //获取CRC校验码
             byte[] getCRC = sendByteList.ToArray();
             byte[] resultCRC = CRCUitl.CalculateCRC(getCRC, getCRC.Length);
@@ -183,14 +181,15 @@ namespace ModbusDemo.VIewModel
             int attempt = 0;
             List<byte> responseData = new List<byte>();
             byte[] response = null;
-            _serialPort.Write(sendByte, 0, sendByte.Length);
             while (attempt < maxRetries)
             {
+                // 每次重试前清空缓冲区
+                responseData.Clear();
+                // 清除输入缓冲区残留数据
+                _serialPort.DiscardInBuffer();
                 try
                 {
-
-
-
+                    _serialPort.Write(sendByte, 0, sendByte.Length);
                     //使用时间去轮询查询数据
                     DateTime startTime = DateTime.Now;
                     while ((DateTime.Now - startTime).TotalMilliseconds < _serialPort.ReadTimeout)
@@ -203,33 +202,42 @@ namespace ModbusDemo.VIewModel
                             responseData.AddRange(buffer.Take(bytesRead));
                         }
                         //延迟20毫秒，节约cpu资源
-                        await Task.Delay(20);
+                        Thread.Sleep(20);
                     }
                     response = responseData.ToArray();
-                    if (response[0] == 0x00)
+                    if (response.Length == 0)
                     {
                         continue;
                     }
                     resultValue = ParseRegistersresponse(sendByte, response, numberOfPoints);
                     return resultValue;
-
                 }
                 catch (Exception)
                 {
 
+
+                }
+                finally
+                {
                     attempt++;
                 }
 
             }
-
             return resultValue;
 
 
 
         }
-
+        /// <summary>
+        /// 解析读取到的操作
+        /// </summary>
+        /// <param name="sendByte"></param>
+        /// <param name="response"></param>
+        /// <param name="numberOfPoints"></param>
+        /// <returns></returns>
         public ushort[] ParseRegistersresponse(byte[] sendByte, byte[] response, ushort numberOfPoints)
         {
+           
 
 
             //判断发送回来的数据是否正确
@@ -249,7 +257,12 @@ namespace ModbusDemo.VIewModel
             {
                 return null;
             }
+
+
+
+
         }
+
     }
 
 }

ModbusDemo/VIewModel/SettingsUCViewModel.cs

@@ -14,7 +14,7 @@ using System.Windows;
 
 namespace ModbusDemo.VIewModel
 {
-    
+
     class SettingsUCViewModel : BindableBase
     {
         //事件聚合器
@@ -22,9 +22,9 @@ namespace ModbusDemo.VIewModel
         //控制页面跳转
         private readonly IRegionManager _regionManager;
         //断开连接的命令
-        public DelegateCommand DisConnectionCmm {  get; set; }
+        public DelegateCommand DisConnectionCmm { get; set; }
         //链接窗口的命令
-        public DelegateCommand ConnectionCmm {  get; set; }
+        public DelegateCommand ConnectionCmm { get; set; }
 
         //获取串口
         private SerialPort _serialPort;
@@ -93,9 +93,23 @@ namespace ModbusDemo.VIewModel
             }
         }
 
+        //设置读取和写入时间
+        private string _timeOut = "200";
+
+        public string TimeOut
+        {
+            get { return _timeOut; }
+            set
+            {
+                _timeOut = value;
+                RaisePropertyChanged();
+            }
+        }
+
+
         public SettingsUCViewModel()
         {
-            
+
         }
         /// <summary>
         /// 从容器中获取创建的窗口
@@ -115,7 +129,7 @@ namespace ModbusDemo.VIewModel
             if (_serialPort.IsOpen)
             {
                 _serialPort.Close();
-                
+
             }
             MessageBox.Show("连接已经断开");
         }
@@ -139,11 +153,11 @@ namespace ModbusDemo.VIewModel
                 }
                 _serialPort.StopBits = this.StopBits;
                 _serialPort.DataBits = int.Parse(GetComboBoxItemValue(this.DataBits));
-                
+
                 //读取超时时间
-                _serialPort.ReadTimeout = 500;
+                _serialPort.ReadTimeout = int.Parse(GetComboBoxItemValue(this.TimeOut));
                 //写入超时时间
-                _serialPort.WriteTimeout = 500;
+                _serialPort.WriteTimeout = int.Parse(GetComboBoxItemValue(this.TimeOut));
                 try
                 {
                     _serialPort.Open();
@@ -156,14 +170,14 @@ namespace ModbusDemo.VIewModel
                 catch (Exception)
                 {
 
-                    MessageBox.Show("串口已经链接或者断开，请重新检查在尝试","warning",MessageBoxButton.OK,MessageBoxImage.Warning);
+                    MessageBox.Show("串口已经链接或者断开，请重新检查在尝试", "warning", MessageBoxButton.OK, MessageBoxImage.Warning);
                 }
             }
             else
             {
                 MessageBox.Show("当前串口已经连接，请先断开,再连接");
             }
-            
+
         }
         /// <summary>
         /// 处理下拉框的选择信息
@@ -177,7 +191,7 @@ namespace ModbusDemo.VIewModel
             string cleanText = displayText.Replace("System.Windows.Controls.ComboBoxItem: ", "");
             return cleanText;
         }
-       
+
 
     }
 }

ModbusTest/UnitTest1.cs

@@ -1,3 +1,5 @@
+//using ModbusDemo.Enum;
+
 namespace ModbusTest
 {
     public class Tests
@@ -10,7 +12,10 @@ namespace ModbusTest
         [Test]
         public void Test1()
         {
-            Assert.Pass();
+            byte[] byteStream = new byte[] { 0x01, 0x81, 0x01, 0x10, 0x00, 0x00, 0xAB, 0x17 };
+            byte errorCodeByte = byteStream[2]; // 0x01
+            //ErrorCode errorCode = (ErrorCode)errorCodeByte; // ת»»Îª ErrorCode.FunctionCodeError
+            //string message = errorCode.GetMessage();
         }
     }
 }