diff --git a/Models/PlcConfiguration.cs b/Models/PlcConfiguration.cs
index ac77530..4d2455f 100644
--- a/Models/PlcConfiguration.cs
+++ b/Models/PlcConfiguration.cs
@@ -23,6 +23,7 @@
         public ushort HardnessOver { get; set; }
         public ushort HardnessCompleteCoil { get; set; }
         public ushort HardnessPoSun { get; set; }
+        public ushort HardnessPressure { get; set; }
         // 脆碎度
         public ushort FriabilityStartCoil { get; set; }
         public ushort FriabilityTestTime { get; set; }
diff --git a/Views/SettingsWindow.xaml b/Views/SettingsWindow.xaml
index e9cc271..cd4d31d 100644
--- a/Views/SettingsWindow.xaml
+++ b/Views/SettingsWindow.xaml
@@ -87,6 +87,10 @@
                                 <TextBlock Text="测试次数:" Style="{StaticResource ParamLabel}"/>
                                 <TextBox x:Name="HardnessCountBox" helpers:NumericInput.AllowDecimal="False"/>
                             </StackPanel>
+                            <StackPanel Style="{StaticResource ParamRow}">
+                                <TextBlock Text="加压压力:" Style="{StaticResource ParamLabel}"/>
+                                <TextBox x:Name="HardnessPressureBox"/>
+                            </StackPanel>
                         </WrapPanel>
                         <TextBlock Text="硬度没有统一药典数值限度，此处作为企业内控范围和本机测试次数。"
                                    Style="{StaticResource StandardNote}"/>
diff --git a/Views/SettingsWindow.xaml.cs b/Views/SettingsWindow.xaml.cs
index cf958a8..0b51ff9 100644
--- a/Views/SettingsWindow.xaml.cs
+++ b/Views/SettingsWindow.xaml.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using TabletTester2025.Models;
@@ -12,6 +13,12 @@ namespace TabletTester2025
         {
             InitializeComponent();
             LoadSettings();
+            Loaded += SettingsWindow_Loaded;
+        }
+
+        private async void SettingsWindow_Loaded(object sender, RoutedEventArgs e)
+        {
+            await LoadHardnessPressureAsync();
         }
 
         private void LoadSettings()
@@ -39,7 +46,7 @@ namespace TabletTester2025
             SampleTimesBox.Text = string.Join(",", p.DissolutionSampleTimes ?? Array.Empty<int>());
         }
 
-        private void SaveButton_Click(object sender, RoutedEventArgs e)
+        private async void SaveButton_Click(object sender, RoutedEventArgs e)
         {
             try
             {
@@ -50,6 +57,7 @@ namespace TabletTester2025
                 p.HardnessMin_N = ParseFiniteDouble(HardnessMinBox.Text, "硬度内控下限");
                 p.HardnessMax_N = ParseFiniteDouble(HardnessMaxBox.Text, "硬度内控上限");
                 p.HardnessTestCount = int.Parse(HardnessCountBox.Text);
+                double hardnessPressure = ParseFiniteDouble(HardnessPressureBox.Text, "加压压力");
                 p.FriabilityTargetRpm = ParseFiniteDouble(FriabilityRpmBox.Text, "脆碎度转速");
                 p.FriabilityTargetTimeMin = ParseFiniteDouble(FriabilityTimeBox.Text, "脆碎度试验时间");
                 p.FriabilityTargetRounds = CalculateFriabilityRounds(p.FriabilityTargetTimeMin, p.FriabilityTargetRpm);
@@ -70,6 +78,7 @@ namespace TabletTester2025
                     .ToArray();
 
                 ValidateParameters(p);
+                await WriteHardnessPressureAsync(hardnessPressure);
                 App.CurrentPharmaParams = p;
                 App.SaveCurrentPharmaParameters();
 
@@ -169,10 +178,44 @@ namespace TabletTester2025
         {
             if (!double.TryParse(text, out double value) || !double.IsFinite(value))
                 throw new InvalidOperationException($"{fieldName}必须为有效数字。");
+            if (value < 0)
+                throw new InvalidOperationException($"{fieldName}不能小于0。");
 
             return value;
         }
 
+        private async Task LoadHardnessPressureAsync()
+        {
+            ushort registerAddress = ResolveHardnessPressureRegister();
+            if (registerAddress == 0)
+                return;
+
+            try
+            {
+                float value = await App.PlcService.ReadFloatAsync(registerAddress);
+                if (float.IsFinite(value))
+                    HardnessPressureBox.Text = value.ToString("0.###");
+            }
+            catch
+            {
+                HardnessPressureBox.Text = "";
+            }
+        }
+
+        private static async Task WriteHardnessPressureAsync(double value)
+        {
+            ushort registerAddress = ResolveHardnessPressureRegister();
+            if (registerAddress == 0)
+                throw new InvalidOperationException("加压压力PLC寄存器地址未配置。");
+
+            await App.PlcService.WriteFloatAsync(registerAddress, (float)value);
+        }
+
+        private static ushort ResolveHardnessPressureRegister()
+        {
+            return App.PlcConfig.HardnessPressure != 0 ? App.PlcConfig.HardnessPressure : (ushort)1480;
+        }
+
         private static double ResolveFriabilityTargetTimeMin(PharmaParameters p)
         {
             if (p.FriabilityTargetTimeMin > 0)
diff --git a/appsettings.json b/appsettings.json
index 4cbf562..f1e4f7a 100644
--- a/appsettings.json
+++ b/appsettings.json
@@ -21,6 +21,7 @@
     "HardnessSudu": 300, // 硬度速度输入mm/min
     "HardnessWeiyi": 310, // 硬度位移输入mm/min
     "HardnessPoSun": 400, // 硬度破损判定输入N
+    "HardnessPressure": 1480, // 加压压力
     "HardnessMax": 72, //最大力采集
     "HardnessShishilizhi": 1314, //力显示