diff --git a/ViewModels/StationViewModel.cs b/ViewModels/StationViewModel.cs
index 830d527..8fa7c10 100644
--- a/ViewModels/StationViewModel.cs
+++ b/ViewModels/StationViewModel.cs
@@ -1306,7 +1306,10 @@ namespace TabletTester2025.ViewModels
             try
             {
                 int count = Math.Max(1, HardnessTestCount);
+                ushort startCoil = ResolveHardnessStartCoil();
                 ushort completeCoil = ResolveHardnessCompleteCoil();
+                if (startCoil == 0)
+                    throw new InvalidOperationException("硬度启动线圈未配置");
                 if (completeCoil == 0)
                     throw new InvalidOperationException("硬度完成线圈未配置");
                 if (_plcConfig.HardnessMax == 0)
@@ -1315,10 +1318,11 @@ namespace TabletTester2025.ViewModels
                 await _plc.WriteFloatAsync(_plcConfig.HardnessSudu, (float)HardnessSudu);
                 await _plc.WriteFloatAsync(_plcConfig.HardnessWeiyi, (float)HardnessWeiyi);
 
-                if (await _plc.ReadCoilAsync(completeCoil))
-                    await WaitForCoilStateAsync(completeCoil, false, TimeSpan.FromSeconds(10), "硬度完成信号未复位");
+                bool completeWasActiveBeforeStart = await _plc.ReadCoilAsync(completeCoil);
+                await PulseCoilAsync(startCoil);
 
-                await PulseCoilAsync(_plcConfig.HardnessStartCoil);
+                if (completeWasActiveBeforeStart)
+                    await WaitForCoilStateAsync(completeCoil, false, TimeSpan.FromSeconds(10), "硬度完成信号未复位");
 
                 while (Phase == TestPhase.Running && _hardnessResults.Count < count)
                 {
@@ -1357,6 +1361,13 @@ namespace TabletTester2025.ViewModels
                 : _plcConfig.HardnessCompleteCoil;
         }
 
+        private ushort ResolveHardnessStartCoil()
+        {
+            return _plcConfig.HardnessStartCoil != 0
+                ? _plcConfig.HardnessStartCoil
+                : (ushort)70;
+        }
+
         private async Task<double> ReadHardnessResultAsync()
         {
             double value = await _plc.ReadFloatAsync(_plcConfig.HardnessMax);