diff --git a/CSI-H238M/CSI-H238M/Models/AppConfig.cs b/CSI-H238M/CSI-H238M/Models/AppConfig.cs
index f4b9666..f423c0d 100644
--- a/CSI-H238M/CSI-H238M/Models/AppConfig.cs
+++ b/CSI-H238M/CSI-H238M/Models/AppConfig.cs
@@ -174,6 +174,9 @@ namespace COFTester.Models
         public ushort TestStrokeRegister { get; set; } = 26;     // 測試行程 (mm)，Float，2個寄存器
         public ushort SamplingRateRegister { get; set; } = 28;   // 採樣頻率 (Hz)，Float，2個寄存器
         
+        // === 校準寄存器（寫入）===
+        public ushort CalibrationRegister { get; set; } = 1300;  // 校準命令寄存器 M1300
+        
         public int RetryCount { get; set; } = 3; // 重試次數
         public int RetryDelay { get; set; } = 500; // 重試延遲(毫秒)
     }
@@ -208,6 +211,9 @@ namespace COFTester.Models
         public ushort TestStrokeRegister { get; set; } = 26;     // 測試行程 (mm)，Float，2個寄存器
         public ushort SamplingRateRegister { get; set; } = 28;   // 採樣頻率 (Hz)，Float，2個寄存器
         
+        // === 校準寄存器（寫入）===
+        public ushort CalibrationRegister { get; set; } = 1300;  // 校準命令寄存器 M1300
+        
         public int RetryCount { get; set; } = 3;
         public int RetryDelay { get; set; } = 500;
     }
diff --git a/CSI-H238M/CSI-H238M/Models/Model.cs b/CSI-H238M/CSI-H238M/Models/Model.cs
index 81904ed..54d502b 100644
--- a/CSI-H238M/CSI-H238M/Models/Model.cs
+++ b/CSI-H238M/CSI-H238M/Models/Model.cs
@@ -338,6 +338,22 @@ namespace COFTester.Models
         void StartAcquisition(TestParameters parameters);
         void StopAcquisition();
         void ResetSensors();
+        
+        /// <summary>
+        /// 零點標定
+        /// </summary>
+        void ZeroCalibration();
+        
+        /// <summary>
+        /// 拉力校準
+        /// </summary>
+        void ForceCalibration();
+        
+        /// <summary>
+        /// 復歸
+        /// </summary>
+        void ReturnToOrigin();
+        
         bool IsConnected { get; }
     }
 
diff --git a/CSI-H238M/CSI-H238M/Resources/LanguageResources.cs b/CSI-H238M/CSI-H238M/Resources/LanguageResources.cs
index c500bc0..41809b3 100644
--- a/CSI-H238M/CSI-H238M/Resources/LanguageResources.cs
+++ b/CSI-H238M/CSI-H238M/Resources/LanguageResources.cs
@@ -130,6 +130,10 @@ namespace COFTester.Resources
                 ["CalibrationInstruction"] = "请确保设备已连接，然后执行以下标定步骤：",
                 ["ZeroCalibration"] = "零点标定",
                 ["ZeroCalibrationNote"] = "说明：在无负载状态下执行零点标定，将当前读数设为零点。",
+                ["ForceCalibration"] = "拉力校准",
+                ["ForceCalibrationNote"] = "说明：在已知标准负载下执行拉力校准，校准传感器精度。",
+                ["ReturnToOrigin"] = "复归",
+                ["ReturnToOriginNote"] = "说明：将设备返回到初始位置。",
                 
                 // 测试参数标签
                 ["SpeedLabel"] = "速度:",
@@ -271,6 +275,10 @@ namespace COFTester.Resources
                 ["CalibrationInstruction"] = "Please ensure the device is connected, then perform the following calibration steps:",
                 ["ZeroCalibration"] = "Zero Calibration",
                 ["ZeroCalibrationNote"] = "Note: Perform zero calibration under no-load condition to set the current reading as zero point.",
+                ["ForceCalibration"] = "Force Calibration",
+                ["ForceCalibrationNote"] = "Note: Perform force calibration under known standard load to calibrate sensor accuracy.",
+                ["ReturnToOrigin"] = "Return to Origin",
+                ["ReturnToOriginNote"] = "Note: Return the device to the initial position.",
                 
                 // Test Parameter Labels
                 ["SpeedLabel"] = "Speed:",
@@ -406,6 +414,10 @@ namespace COFTester.Resources
         public string CalibrationInstruction => GetString("CalibrationInstruction");
         public string ZeroCalibration => GetString("ZeroCalibration");
         public string ZeroCalibrationNote => GetString("ZeroCalibrationNote");
+        public string ForceCalibration => GetString("ForceCalibration");
+        public string ForceCalibrationNote => GetString("ForceCalibrationNote");
+        public string ReturnToOrigin => GetString("ReturnToOrigin");
+        public string ReturnToOriginNote => GetString("ReturnToOriginNote");
         
         // Test Parameter Labels
         public string SpeedLabel => GetString("SpeedLabel");
@@ -542,6 +554,10 @@ namespace COFTester.Resources
             OnPropertyChanged(nameof(CalibrationInstruction));
             OnPropertyChanged(nameof(ZeroCalibration));
             OnPropertyChanged(nameof(ZeroCalibrationNote));
+            OnPropertyChanged(nameof(ForceCalibration));
+            OnPropertyChanged(nameof(ForceCalibrationNote));
+            OnPropertyChanged(nameof(ReturnToOrigin));
+            OnPropertyChanged(nameof(ReturnToOriginNote));
             
             // Test Parameter Labels
             OnPropertyChanged(nameof(SpeedLabel));
diff --git a/CSI-H238M/CSI-H238M/Services/ModbusService.cs b/CSI-H238M/CSI-H238M/Services/ModbusService.cs
index 6c56a19..55a5e71 100644
--- a/CSI-H238M/CSI-H238M/Services/ModbusService.cs
+++ b/CSI-H238M/CSI-H238M/Services/ModbusService.cs
@@ -22,6 +22,21 @@ namespace COFTester.Services
         Reset = 2
     }
 
+    /// <summary>
+    /// Modbus 校準命令枚舉（寄存器 M1300）
+    /// </summary>
+    public enum ModbusCalibrationCommand : ushort
+    {
+        /// <summary>無操作</summary>
+        None = 0,
+        /// <summary>零點標定</summary>
+        ZeroCalibration = 1,
+        /// <summary>拉力校準</summary>
+        ForceCalibration = 2,
+        /// <summary>復歸</summary>
+        Return = 3
+    }
+
     /// <summary>
     /// Modbus 設備狀態枚舉
     /// </summary>
@@ -139,10 +154,72 @@ namespace COFTester.Services
             }
         }
 
+        /// <summary>
+        /// 零點標定，向 M1300 寫入命令 1
+        /// </summary>
+        public virtual void ZeroCalibration()
+        {
+            try
+            {
+                if (_modbusMaster != null && _isConnected)
+                {
+                    System.Diagnostics.Debug.WriteLine("[Modbus] 發送零點標定命令 (1) 到 M1300");
+                    WriteCalibrationRegisterAsync((ushort)ModbusCalibrationCommand.ZeroCalibration).Wait();
+                }
+            }
+            catch (Exception ex)
+            {
+                OnErrorOccurred($"零點標定失敗: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 拉力校準，向 M1300 寫入命令 2
+        /// </summary>
+        public virtual void ForceCalibration()
+        {
+            try
+            {
+                if (_modbusMaster != null && _isConnected)
+                {
+                    System.Diagnostics.Debug.WriteLine("[Modbus] 發送拉力校準命令 (2) 到 M1300");
+                    WriteCalibrationRegisterAsync((ushort)ModbusCalibrationCommand.ForceCalibration).Wait();
+                }
+            }
+            catch (Exception ex)
+            {
+                OnErrorOccurred($"拉力校準失敗: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 復歸，向 M1300 寫入命令 3
+        /// </summary>
+        public virtual void ReturnToOrigin()
+        {
+            try
+            {
+                if (_modbusMaster != null && _isConnected)
+                {
+                    System.Diagnostics.Debug.WriteLine("[Modbus] 發送復歸命令 (3) 到 M1300");
+                    WriteCalibrationRegisterAsync((ushort)ModbusCalibrationCommand.Return).Wait();
+                }
+            }
+            catch (Exception ex)
+            {
+                OnErrorOccurred($"復歸失敗: {ex.Message}");
+            }
+        }
+
         protected abstract Task AcquisitionLoopAsync(TestParameters parameters, CancellationToken token);
         protected abstract Task<TestDataPoint?> ReadSensorDataAsync();
         protected abstract Task WriteControlRegisterAsync(ushort value);
         
+        /// <summary>
+        /// 寫入校準命令到 M1300 寄存器
+        /// </summary>
+        protected abstract Task WriteCalibrationRegisterAsync(ushort value);
+        
         /// <summary>
         /// 寫入測試參數到 PLC 寄存器
         /// </summary>
@@ -392,6 +469,23 @@ namespace COFTester.Services
             }
         }
 
+        /// <summary>
+        /// 寫入校準命令到 M1300
+        /// 0 = 無操作
+        /// 1 = 零點標定
+        /// 2 = 拉力校準
+        /// 3 = 復歸
+        /// </summary>
+        protected override async Task WriteCalibrationRegisterAsync(ushort value)
+        {
+            if (_modbusMaster != null)
+            {
+                await _modbusMaster.WriteSingleRegisterAsync(
+                    _config.SlaveId, _config.CalibrationRegister, value);
+                System.Diagnostics.Debug.WriteLine($"[ModbusTCP] 校準寄存器[{_config.CalibrationRegister}] = {value}");
+            }
+        }
+
         /// <summary>
         /// 寫入測試參數到 PLC 寄存器
         /// 參數映射：
@@ -674,6 +768,23 @@ namespace COFTester.Services
             }
         }
 
+        /// <summary>
+        /// 寫入校準命令到 M1300
+        /// 0 = 無操作
+        /// 1 = 零點標定
+        /// 2 = 拉力校準
+        /// 3 = 復歸
+        /// </summary>
+        protected override async Task WriteCalibrationRegisterAsync(ushort value)
+        {
+            if (_modbusMaster != null)
+            {
+                await _modbusMaster.WriteSingleRegisterAsync(
+                    _config.SlaveId, _config.CalibrationRegister, value);
+                System.Diagnostics.Debug.WriteLine($"[ModbusRTU] 校準寄存器[{_config.CalibrationRegister}] = {value}");
+            }
+        }
+
         /// <summary>
         /// 寫入測試參數到 PLC 寄存器
         /// </summary>
@@ -957,6 +1068,19 @@ namespace COFTester.Services
             }
         }
 
+        /// <summary>
+        /// 寫入校準命令到 M1300
+        /// </summary>
+        protected override async Task WriteCalibrationRegisterAsync(ushort value)
+        {
+            if (_modbusMaster != null)
+            {
+                await _modbusMaster.WriteSingleRegisterAsync(
+                    _config.SlaveId, _config.CalibrationRegister, value);
+                System.Diagnostics.Debug.WriteLine($"[ModbusASCII] 校準寄存器[{_config.CalibrationRegister}] = {value}");
+            }
+        }
+
         /// <summary>
         /// 寫入測試參數到 PLC 寄存器
         /// </summary>
@@ -1164,6 +1288,51 @@ namespace COFTester.Services
             }
         }
 
+        public void ZeroCalibration()
+        {
+            try
+            {
+                if (_serialPort != null && _isConnected)
+                {
+                    _serialPort.WriteLine("ZERO_CAL");
+                }
+            }
+            catch (Exception ex)
+            {
+                OnErrorOccurred($"零點標定失败: {ex.Message}");
+            }
+        }
+
+        public void ForceCalibration()
+        {
+            try
+            {
+                if (_serialPort != null && _isConnected)
+                {
+                    _serialPort.WriteLine("FORCE_CAL");
+                }
+            }
+            catch (Exception ex)
+            {
+                OnErrorOccurred($"拉力校準失败: {ex.Message}");
+            }
+        }
+
+        public void ReturnToOrigin()
+        {
+            try
+            {
+                if (_serialPort != null && _isConnected)
+                {
+                    _serialPort.WriteLine("RETURN");
+                }
+            }
+            catch (Exception ex)
+            {
+                OnErrorOccurred($"復歸失败: {ex.Message}");
+            }
+        }
+
         private async Task AcquisitionLoopAsync(TestParameters parameters, CancellationToken token)
         {
             try
diff --git a/CSI-H238M/CSI-H238M/Services/Services.cs b/CSI-H238M/CSI-H238M/Services/Services.cs
index 40fade8..533329e 100644
--- a/CSI-H238M/CSI-H238M/Services/Services.cs
+++ b/CSI-H238M/CSI-H238M/Services/Services.cs
@@ -511,5 +511,23 @@ namespace COFTester.Services
         {
             // 模擬傳感器清零（無實際操作）
         }
+
+        public void ZeroCalibration()
+        {
+            // 模擬零點標定（無實際操作）
+            System.Diagnostics.Debug.WriteLine("[Simulated] 零點標定完成");
+        }
+
+        public void ForceCalibration()
+        {
+            // 模擬拉力校準（無實際操作）
+            System.Diagnostics.Debug.WriteLine("[Simulated] 拉力校準完成");
+        }
+
+        public void ReturnToOrigin()
+        {
+            // 模擬復歸（無實際操作）
+            System.Diagnostics.Debug.WriteLine("[Simulated] 復歸完成");
+        }
     }
 }
diff --git a/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs b/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs
index 3ce4d56..fb60cf9 100644
--- a/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs
+++ b/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs
@@ -66,6 +66,11 @@ namespace COFTester.ViewModels
             OpenConfigCommand = new RelayCommand(OpenConfig);
             ClearAllTestsCommand = new RelayCommand(ClearAllTests, () => !_isTesting && TestRecords?.Count > 0);
             GenerateReportCommand = new RelayCommand(GenerateReport, () => TestRecords?.Count > 0);
+            
+            // 校準命令
+            ZeroCalibrationCommand = new RelayCommand(ZeroCalibration, () => !_isTesting && IsConnected);
+            ForceCalibrationCommand = new RelayCommand(ForceCalibration, () => !_isTesting && IsConnected);
+            ReturnToOriginCommand = new RelayCommand(ReturnToOrigin, () => !_isTesting && IsConnected);
 
             Parameters = _config.DefaultTestParameters ?? new TestParameters();
             TestRecords = new ObservableCollection<TestResult>();
@@ -418,6 +423,11 @@ namespace COFTester.ViewModels
         public ICommand OpenConfigCommand { get; }
         public ICommand ClearAllTestsCommand { get; }
         public ICommand GenerateReportCommand { get; }
+        
+        // 校準命令
+        public ICommand ZeroCalibrationCommand { get; }
+        public ICommand ForceCalibrationCommand { get; }
+        public ICommand ReturnToOriginCommand { get; }
         #endregion
 
         #region Event Handlers
@@ -622,6 +632,111 @@ namespace COFTester.ViewModels
             _daqService.ResetSensors();
         }
         
+        /// <summary>
+        /// 零點標定 - 向 M1300 寫入命令 1
+        /// </summary>
+        private void ZeroCalibration()
+        {
+            try
+            {
+                if (!IsConnected)
+                {
+                    StatusMessage = "请先连接设备";
+                    MessageBox.Show("请先连接设备后再执行零点标定", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                    return;
+                }
+
+                StatusMessage = "正在执行零点标定...";
+                _daqService.ZeroCalibration();
+                StatusMessage = "零点标定完成";
+                
+                System.Diagnostics.Debug.WriteLine("[ViewModel] 零点标定命令已发送");
+                
+                MessageBox.Show("零点标定完成！\n\n当前读数已设为零点。", 
+                    "标定成功", 
+                    MessageBoxButton.OK, 
+                    MessageBoxImage.Information);
+            }
+            catch (Exception ex)
+            {
+                StatusMessage = $"零点标定失败: {ex.Message}";
+                MessageBox.Show($"零点标定时发生错误：\n{ex.Message}", 
+                    "错误", 
+                    MessageBoxButton.OK, 
+                    MessageBoxImage.Error);
+            }
+        }
+        
+        /// <summary>
+        /// 拉力校准 - 向 M1300 写入命令 2
+        /// </summary>
+        private void ForceCalibration()
+        {
+            try
+            {
+                if (!IsConnected)
+                {
+                    StatusMessage = "请先连接设备";
+                    MessageBox.Show("请先连接设备后再执行拉力校准", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                    return;
+                }
+
+                StatusMessage = "正在执行拉力校准...";
+                _daqService.ForceCalibration();
+                StatusMessage = "拉力校准完成";
+                
+                System.Diagnostics.Debug.WriteLine("[ViewModel] 拉力校准命令已发送");
+                
+                MessageBox.Show("拉力校准完成！\n\n传感器已校准。", 
+                    "校准成功", 
+                    MessageBoxButton.OK, 
+                    MessageBoxImage.Information);
+            }
+            catch (Exception ex)
+            {
+                StatusMessage = $"拉力校准失败: {ex.Message}";
+                MessageBox.Show($"拉力校准时发生错误：\n{ex.Message}", 
+                    "错误", 
+                    MessageBoxButton.OK, 
+                    MessageBoxImage.Error);
+            }
+        }
+        
+        /// <summary>
+        /// 复归 - 向 M1300 写入命令 3
+        /// </summary>
+        private void ReturnToOrigin()
+        {
+            try
+            {
+                if (!IsConnected)
+                {
+                    StatusMessage = "请先连接设备";
+                    MessageBox.Show("请先连接设备后再执行复归", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                    return;
+                }
+
+                StatusMessage = "正在执行复归...";
+                _daqService.ReturnToOrigin();
+                StatusMessage = "复归完成";
+                
+                System.Diagnostics.Debug.WriteLine("[ViewModel] 复归命令已发送");
+                
+                MessageBox.Show("复归完成！\n\n设备已返回原点。", 
+                    "复归成功", 
+                    MessageBoxButton.OK, 
+                    MessageBoxImage.Information);
+            }
+            catch (Exception ex)
+            {
+                StatusMessage = $"复归失败: {ex.Message}";
+                MessageBox.Show($"复归时发生错误：\n{ex.Message}", 
+                    "错误", 
+                    MessageBoxButton.OK, 
+                    MessageBoxImage.Error);
+            }
+        }
+        
         /// <summary>
         /// 添加曲线到图表
         /// </summary>
diff --git a/CSI-H238M/CSI-H238M/Views/CalibrationPage.xaml b/CSI-H238M/CSI-H238M/Views/CalibrationPage.xaml
index 556ab6c..a04a81c 100644
--- a/CSI-H238M/CSI-H238M/Views/CalibrationPage.xaml
+++ b/CSI-H238M/CSI-H238M/Views/CalibrationPage.xaml
@@ -71,7 +71,8 @@
                     <TextBlock Text="{Binding Lang.CalibrationOperation}" FontWeight="Bold" Margin="0,0,0,10" FontSize="14"/>
                     <TextBlock Text="{Binding Lang.CalibrationInstruction}" TextWrapping="Wrap" Margin="0,0,0,15" FontSize="12"/>
                     
-                    <Button Content="{Binding Lang.ZeroCalibration}" Command="{Binding ResetCommand}" Height="50" Foreground="White" FontSize="14" Margin="0,0,0,10">
+                    <!-- 零点标定 -->
+                    <Button Content="{Binding Lang.ZeroCalibration}" Command="{Binding ZeroCalibrationCommand}" Height="50" Foreground="White" FontSize="14" Margin="0,0,0,10">
                         <Button.Style>
                             <Style TargetType="Button">
                                 <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
@@ -95,6 +96,60 @@
                     </Button>
                     
                     <TextBlock Text="{Binding Lang.ZeroCalibrationNote}" 
+                               TextWrapping="Wrap" FontSize="11" Foreground="{StaticResource GrayBrush}" Margin="0,0,0,15"/>
+                    
+                    <!-- 拉力校准 -->
+                    <Button Content="{Binding Lang.ForceCalibration}" Command="{Binding ForceCalibrationCommand}" Height="50" Foreground="White" FontSize="14" Margin="0,0,0,10">
+                        <Button.Style>
+                            <Style TargetType="Button">
+                                <Setter Property="Background" Value="{StaticResource SuccessBrush}"/>
+                                <Setter Property="BorderThickness" Value="0"/>
+                                <Setter Property="Cursor" Value="Hand"/>
+                                <Setter Property="Template">
+                                    <Setter.Value>
+                                        <ControlTemplate TargetType="Button">
+                                            <Border x:Name="border" 
+                 Background="{TemplateBinding Background}" 
+                 CornerRadius="8"
+                 Padding="{TemplateBinding Padding}">
+                                                <ContentPresenter HorizontalAlignment="Center" 
+                               VerticalAlignment="Center"/>
+                                            </Border>
+                                        </ControlTemplate>
+                                    </Setter.Value>
+                                </Setter>
+                            </Style>
+                        </Button.Style>
+                    </Button>
+                    
+                    <TextBlock Text="{Binding Lang.ForceCalibrationNote}" 
+                               TextWrapping="Wrap" FontSize="11" Foreground="{StaticResource GrayBrush}" Margin="0,0,0,15"/>
+                    
+                    <!-- 复归 -->
+                    <Button Content="{Binding Lang.ReturnToOrigin}" Command="{Binding ReturnToOriginCommand}" Height="50" Foreground="White" FontSize="14" Margin="0,0,0,10">
+                        <Button.Style>
+                            <Style TargetType="Button">
+                                <Setter Property="Background" Value="#95A5A6"/>
+                                <Setter Property="BorderThickness" Value="0"/>
+                                <Setter Property="Cursor" Value="Hand"/>
+                                <Setter Property="Template">
+                                    <Setter.Value>
+                                        <ControlTemplate TargetType="Button">
+                                            <Border x:Name="border" 
+                 Background="{TemplateBinding Background}" 
+                 CornerRadius="8"
+                 Padding="{TemplateBinding Padding}">
+                                                <ContentPresenter HorizontalAlignment="Center" 
+                               VerticalAlignment="Center"/>
+                                            </Border>
+                                        </ControlTemplate>
+                                    </Setter.Value>
+                                </Setter>
+                            </Style>
+                        </Button.Style>
+                    </Button>
+                    
+                    <TextBlock Text="{Binding Lang.ReturnToOriginNote}" 
                                TextWrapping="Wrap" FontSize="11" Foreground="{StaticResource GrayBrush}" Margin="0,5,0,0"/>
                 </StackPanel>
             </Border>
diff --git a/CSI-H238M/config.json b/CSI-H238M/config.json
index 6562d32..892a603 100644
--- a/CSI-H238M/config.json
+++ b/CSI-H238M/config.json
@@ -15,6 +15,7 @@
     "TestDurationRegister": 24,
     "TestStrokeRegister": 26,
     "SamplingRateRegister": 28,
+    "CalibrationRegister": 1300,
     "RetryCount": 3,
     "RetryDelay": 500
   },
@@ -37,6 +38,7 @@
     "TestDurationRegister": 24,
     "TestStrokeRegister": 26,
     "SamplingRateRegister": 28,
+    "CalibrationRegister": 1300,
     "RetryCount": 3,
     "RetryDelay": 500
   },