diff --git a/src/AxiOmron.PcbCheck/Converters/ResultCodeToTagTextConverter.cs b/src/AxiOmron.PcbCheck/Converters/ResultCodeToTagTextConverter.cs
index 28cf4f1..723f293 100644
--- a/src/AxiOmron.PcbCheck/Converters/ResultCodeToTagTextConverter.cs
+++ b/src/AxiOmron.PcbCheck/Converters/ResultCodeToTagTextConverter.cs
@@ -5,7 +5,7 @@ using AxiOmron.PcbCheck.Models;
 namespace AxiOmron.PcbCheck.Converters;
 
 /// <summary>
-/// 将 <see cref="WorkflowResultCode"/>（以 <see cref="short"/> 存储）映射为简短 Tag 文本。
+/// 将 <see cref="WorkflowResultCode"/>（以 <see cref="ushort"/> 存储）映射为简短 Tag 文本。
 /// </summary>
 /// <remarks>
 /// 映射规则：Passed → "OK"；Processing → "处理中"；None → "-"；其余视为 "NG"。
@@ -22,19 +22,20 @@ public sealed class ResultCodeToTagTextConverter : IValueConverter
     /// <returns>简短标签文本。</returns>
     public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
     {
-        short code = value switch
+        ushort code = value switch
         {
-            short s => s,
-            int i => (short)i,
-            WorkflowResultCode rc => (short)rc,
+            ushort s => s,
+            short s when s >= 0 => (ushort)s,
+            int i when i >= 0 && i <= ushort.MaxValue => (ushort)i,
+            WorkflowResultCode rc => (ushort)rc,
             _ => 0
         };
 
         return code switch
         {
-            (short)WorkflowResultCode.Passed => "OK",
-            (short)WorkflowResultCode.Processing => "处理中",
-            (short)WorkflowResultCode.None => "-",
+            (ushort)WorkflowResultCode.Passed => "OK",
+            (ushort)WorkflowResultCode.Processing => "处理中",
+            (ushort)WorkflowResultCode.None => "-",
             _ => "NG"
         };
     }
diff --git a/src/AxiOmron.PcbCheck/DesignTime/DesignTimeAppStateStore.cs b/src/AxiOmron.PcbCheck/DesignTime/DesignTimeAppStateStore.cs
index fac8ace..063cb9d 100644
--- a/src/AxiOmron.PcbCheck/DesignTime/DesignTimeAppStateStore.cs
+++ b/src/AxiOmron.PcbCheck/DesignTime/DesignTimeAppStateStore.cs
@@ -32,7 +32,7 @@ public sealed class DesignTimeAppStateStore : IAppStateStore
             CurrentBarcode = "PCB240417000128",
             ResultDescription = "已扫码，等待 SFTP 文件确认",
             FaultMessage = string.Empty,
-            ResultCode = (short)WorkflowResultCode.Processing,
+            ResultCode = (ushort)WorkflowResultCode.Processing,
             LastTriggeredAt = now.AddSeconds(-18),
             LastCompletedAt = now.AddMinutes(-2),
             IsBusy = true,
@@ -44,7 +44,7 @@ public sealed class DesignTimeAppStateStore : IAppStateStore
         _snapshot.PlcMonitorItems.Add(new PlcMonitorItem { GroupName = "Inputs", Name = "PlcAckRelease", Address = "10003", CurrentValue = "False", LastUpdatedAt = now.AddSeconds(-1) });
         _snapshot.PlcMonitorItems.Add(new PlcMonitorItem { GroupName = "Outputs", Name = "PcBusy", Address = "51", CurrentValue = "True", LastUpdatedAt = now.AddSeconds(-1) });
         _snapshot.PlcMonitorItems.Add(new PlcMonitorItem { GroupName = "Outputs", Name = "ReleasePermit", Address = "52", CurrentValue = "False", LastUpdatedAt = now.AddSeconds(-1) });
-        _snapshot.PlcMonitorItems.Add(new PlcMonitorItem { GroupName = "Registers", Name = "ResultCode", Address = "40001", CurrentValue = ((short)WorkflowResultCode.Processing).ToString(), LastUpdatedAt = now.AddSeconds(-1) });
+        _snapshot.PlcMonitorItems.Add(new PlcMonitorItem { GroupName = "Registers", Name = "ResultCode", Address = "40001", CurrentValue = ((ushort)WorkflowResultCode.Processing).ToString(), LastUpdatedAt = now.AddSeconds(-1) });
 
         _logs = new List<UiLogEntry>
         {
@@ -64,7 +64,7 @@ public sealed class DesignTimeAppStateStore : IAppStateStore
                 Barcode = "PCB240417000125",
                 ScanTryCount = 1,
                 SftpTryCount = 1,
-                ResultCode = (short)WorkflowResultCode.Passed,
+                ResultCode = (ushort)WorkflowResultCode.Passed,
                 ResultDescription = "OK 放行",
                 ReleaseSent = true,
                 ExceptionSummary = string.Empty
@@ -76,7 +76,7 @@ public sealed class DesignTimeAppStateStore : IAppStateStore
                 Barcode = "PCB240417000126",
                 ScanTryCount = 3,
                 SftpTryCount = 0,
-                ResultCode = (short)WorkflowResultCode.NgReleased,
+                ResultCode = (ushort)WorkflowResultCode.NgReleased,
                 ResultDescription = "扫码失败后放行",
                 ReleaseSent = true,
                 ExceptionSummary = "扫码连续失败三次"
@@ -88,7 +88,7 @@ public sealed class DesignTimeAppStateStore : IAppStateStore
                 Barcode = "PCB240417000127",
                 ScanTryCount = 1,
                 SftpTryCount = 3,
-                ResultCode = (short)WorkflowResultCode.NgReleased,
+                ResultCode = (ushort)WorkflowResultCode.NgReleased,
                 ResultDescription = "处理结果 NG，随后放行",
                 ReleaseSent = true,
                 ExceptionSummary = "SFTP 文件查询超时"
@@ -97,8 +97,8 @@ public sealed class DesignTimeAppStateStore : IAppStateStore
 
         _snapshot.RecordStatisticDate = DateOnly.FromDateTime(now.LocalDateTime.Date);
         _snapshot.TodayProcessCount = _records.Count;
-        _snapshot.TodayOkCount = _records.Count(record => record.ResultCode == (short)WorkflowResultCode.Passed);
-        _snapshot.TodayNgCount = _records.Count(record => record.ResultCode != (short)WorkflowResultCode.Passed);
+        _snapshot.TodayOkCount = _records.Count(record => record.ResultCode == (ushort)WorkflowResultCode.Passed);
+        _snapshot.TodayNgCount = _records.Count(record => record.ResultCode != (ushort)WorkflowResultCode.Passed);
         _snapshot.RecordsLastUpdatedAt = now;
         foreach (BoardProcessRecord record in _records)
         {
diff --git a/src/AxiOmron.PcbCheck/Models/RuntimeSnapshot.cs b/src/AxiOmron.PcbCheck/Models/RuntimeSnapshot.cs
index 1911f6f..3b1c1f5 100644
--- a/src/AxiOmron.PcbCheck/Models/RuntimeSnapshot.cs
+++ b/src/AxiOmron.PcbCheck/Models/RuntimeSnapshot.cs
@@ -63,7 +63,7 @@ public sealed class RuntimeSnapshot
     /// <summary>
     /// 获取或设置结果代码。
     /// </summary>
-    public short ResultCode { get; set; }
+    public ushort ResultCode { get; set; }
 
     /// <summary>
     /// 获取或设置上次触发时间。
diff --git a/src/AxiOmron.PcbCheck/Models/WorkflowModels.cs b/src/AxiOmron.PcbCheck/Models/WorkflowModels.cs
index 06e9128..a4fb15a 100644
--- a/src/AxiOmron.PcbCheck/Models/WorkflowModels.cs
+++ b/src/AxiOmron.PcbCheck/Models/WorkflowModels.cs
@@ -69,7 +69,7 @@ public enum WorkflowState
 /// <summary>
 /// 表示最终结果代码定义。
 /// </summary>
-public enum WorkflowResultCode : short
+public enum WorkflowResultCode : ushort
 {
     /// <summary>
     /// 无结果。
@@ -182,7 +182,7 @@ public sealed class PlcProcessState
     /// <summary>
     /// 获取或设置结果代码寄存器值。
     /// </summary>
-    public short ResultCode { get; set; }
+    public ushort ResultCode { get; set; }
 
     /// <summary>
     /// 创建当前状态对象的浅拷贝。
@@ -496,7 +496,7 @@ public sealed class BoardProcessRecord
     /// <summary>
     /// 获取或设置结果代码。
     /// </summary>
-    public short ResultCode { get; set; }
+    public ushort ResultCode { get; set; }
 
     /// <summary>
     /// 获取或设置结果描述。
diff --git a/src/AxiOmron.PcbCheck/Options/AppConfig.cs b/src/AxiOmron.PcbCheck/Options/AppConfig.cs
index 87713c7..1ef4701 100644
--- a/src/AxiOmron.PcbCheck/Options/AppConfig.cs
+++ b/src/AxiOmron.PcbCheck/Options/AppConfig.cs
@@ -130,9 +130,9 @@ public sealed class PlcOptions
     public byte SourceNodeAddress { get; set; } = 25;
 
     /// <summary>
-    /// 获取或设置 PLC 寄存器字节序，默认使用 BADC 以匹配现场 D 区 Int16 高低字节顺序。
+    /// 获取或设置 PLC 寄存器字节序，默认使用 ABCD 以避免 UInt16 结果代码发生高低字节交换。
     /// </summary>
-    public string? EndianFormat { get; set; } = "BADC";
+    public string? EndianFormat { get; set; } = "ABCD";
 
     /// <summary>
     /// 获取或设置轮询周期，单位为毫秒。
diff --git a/src/AxiOmron.PcbCheck/Services/Implementations/CsvBoardRecordRepository.cs b/src/AxiOmron.PcbCheck/Services/Implementations/CsvBoardRecordRepository.cs
index ea680eb..1f786de 100644
--- a/src/AxiOmron.PcbCheck/Services/Implementations/CsvBoardRecordRepository.cs
+++ b/src/AxiOmron.PcbCheck/Services/Implementations/CsvBoardRecordRepository.cs
@@ -247,10 +247,10 @@ public sealed class CsvBoardRecordRepository : IBoardRecordRepository
             {
                 StatisticDate = date,
                 TotalCount = records.Count,
-                OkCount = records.Count(record => record.ResultCode == (short)WorkflowResultCode.Passed),
-                NgCount = records.Count(record => record.ResultCode != (short)WorkflowResultCode.Passed
-                    && record.ResultCode != (short)WorkflowResultCode.Processing
-                    && record.ResultCode != (short)WorkflowResultCode.None),
+                OkCount = records.Count(record => record.ResultCode == (ushort)WorkflowResultCode.Passed),
+                NgCount = records.Count(record => record.ResultCode != (ushort)WorkflowResultCode.Passed
+                    && record.ResultCode != (ushort)WorkflowResultCode.Processing
+                    && record.ResultCode != (ushort)WorkflowResultCode.None),
                 LastUpdatedAt = _timeProvider.GetLocalNow()
             };
 
@@ -400,7 +400,7 @@ public sealed class CsvBoardRecordRepository : IBoardRecordRepository
             || !DateTimeOffset.TryParse(fields[1], out DateTimeOffset completedAt)
             || !int.TryParse(fields[3], out int scanTryCount)
             || !int.TryParse(fields[4], out int sftpTryCount)
-            || !short.TryParse(fields[5], out short resultCode)
+            || !ushort.TryParse(fields[5], out ushort resultCode)
             || !bool.TryParse(fields[7], out bool releaseSent)
             || !bool.TryParse(fields[8], out bool alarmRaised))
         {
diff --git a/src/AxiOmron.PcbCheck/Services/Implementations/OmronFinsPlcService.cs b/src/AxiOmron.PcbCheck/Services/Implementations/OmronFinsPlcService.cs
index 4e50ea2..e5630fa 100644
--- a/src/AxiOmron.PcbCheck/Services/Implementations/OmronFinsPlcService.cs
+++ b/src/AxiOmron.PcbCheck/Services/Implementations/OmronFinsPlcService.cs
@@ -89,7 +89,7 @@ public sealed class OmronFinsPlcService : IPlcService, IDisposable
                 {
                     PcBusy = ReadBoolean(ToDataMemoryAddress(_options.Outputs.PcBusy)),
                     ReleasePermit = ReadBoolean(ToDataMemoryAddress(_options.Outputs.ReleasePermit)),
-                    ResultCode = ReadInt16(ToDataMemoryAddress(_options.Registers.ResultCode))
+                    ResultCode = ReadUInt16(ToDataMemoryAddress(_options.Registers.ResultCode))
                 },
                 CapturedAt = capturedAt
             };
@@ -276,15 +276,15 @@ public sealed class OmronFinsPlcService : IPlcService, IDisposable
     }
 
     /// <summary>
-    /// 读取单个 D 区有符号 16 位整数。
+    /// 读取单个 D 区无符号 16 位整数。
     /// </summary>
     /// <param name="address">FINS 地址。</param>
     /// <returns>读取到的寄存器值。</returns>
-    private short ReadInt16(string address)
+    private ushort ReadUInt16(string address)
     {
         var client = _client ?? throw new InvalidOperationException("PLC 客户端尚未初始化。");
-        var result = client.ReadInt16(address);
-        EnsureSuccess(result.IsSucceed, result.Err, $"读取 FINS Int16 失败，地址={address}");
+        var result = client.ReadUInt16(address);
+        EnsureSuccess(result.IsSucceed, result.Err, $"读取 FINS UInt16 失败，地址={address}");
         return result.Value;
     }
 
@@ -295,10 +295,10 @@ public sealed class OmronFinsPlcService : IPlcService, IDisposable
     private void WriteChangedState(PlcProcessState state)
     {
         var previous = _lastWrittenState;
-        short? previousResultCode = previous is null ? null : previous.ResultCode;
+        ushort? previousResultCode = previous is null ? null : previous.ResultCode;
         WriteBooleanIfChanged(previous?.PcBusy, state.PcBusy, ToDataMemoryAddress(_options.Outputs.PcBusy));
         WriteBooleanIfChanged(previous?.ReleasePermit, state.ReleasePermit, ToDataMemoryAddress(_options.Outputs.ReleasePermit));
-        WriteInt16IfChanged(previousResultCode, state.ResultCode, ToDataMemoryAddress(_options.Registers.ResultCode));
+        WriteUInt16IfChanged(previousResultCode, state.ResultCode, ToDataMemoryAddress(_options.Registers.ResultCode));
     }
 
     /// <summary>
@@ -320,12 +320,12 @@ public sealed class OmronFinsPlcService : IPlcService, IDisposable
     }
 
     /// <summary>
-    /// 仅当值发生变化时写入单个 D 区有符号 16 位整数。
+    /// 仅当值发生变化时写入单个 D 区无符号 16 位整数。
     /// </summary>
     /// <param name="previous">上一值。</param>
     /// <param name="current">当前值。</param>
     /// <param name="address">FINS 地址。</param>
-    private void WriteInt16IfChanged(short? previous, short current, string address)
+    private void WriteUInt16IfChanged(ushort? previous, ushort current, string address)
     {
         if (previous.HasValue && previous.Value == current)
         {
@@ -334,7 +334,7 @@ public sealed class OmronFinsPlcService : IPlcService, IDisposable
 
         var client = _client ?? throw new InvalidOperationException("PLC 客户端尚未初始化。");
         var result = client.Write(address, current);
-        EnsureSuccess(result.IsSucceed, result.Err, $"写入 FINS Int16 失败，地址={address}，值={current}");
+        EnsureSuccess(result.IsSucceed, result.Err, $"写入 FINS UInt16 失败，地址={address}，值={current}");
     }
 
     /// <summary>
diff --git a/src/AxiOmron.PcbCheck/Services/Implementations/WorkflowHostedService.cs b/src/AxiOmron.PcbCheck/Services/Implementations/WorkflowHostedService.cs
index 25c8d8f..f34f8a7 100644
--- a/src/AxiOmron.PcbCheck/Services/Implementations/WorkflowHostedService.cs
+++ b/src/AxiOmron.PcbCheck/Services/Implementations/WorkflowHostedService.cs
@@ -848,7 +848,7 @@ public sealed class WorkflowHostedService : BackgroundService, IWorkflowControlS
                 Barcode = _currentBarcode,
                 ScanTryCount = _scanTryCount,
                 SftpTryCount = _sftpTryCount,
-                ResultCode = (short)_resultCode,
+                ResultCode = (ushort)_resultCode,
                 ResultDescription = GetResultDescription(_resultCode),
                 ReleaseSent = _releaseSent,
                 AlarmRaised = false,
@@ -1082,7 +1082,7 @@ public sealed class WorkflowHostedService : BackgroundService, IWorkflowControlS
             lock (_stateSyncRoot)
             {
                 updateAction(_plcState);
-                _plcState.ResultCode = (short)_resultCode;
+                _plcState.ResultCode = (ushort)_resultCode;
                 snapshot = _plcState.Clone();
             }
 
@@ -1103,7 +1103,7 @@ public sealed class WorkflowHostedService : BackgroundService, IWorkflowControlS
     {
         DateTimeOffset? startedAt;
         string barcode;
-        short resultCode;
+        ushort resultCode;
         bool isBusy;
         string faultMessage;
 
@@ -1111,7 +1111,7 @@ public sealed class WorkflowHostedService : BackgroundService, IWorkflowControlS
         {
             startedAt = _currentBoardStartedAt;
             barcode = _currentBarcode;
-            resultCode = (short)_resultCode;
+            resultCode = (ushort)_resultCode;
             isBusy = _plcState.PcBusy;
             faultMessage = _faultLatched ? description : string.Empty;
         }
diff --git a/src/AxiOmron.PcbCheck/ViewModels/MainWindowViewModel.cs b/src/AxiOmron.PcbCheck/ViewModels/MainWindowViewModel.cs
index 1102cf1..bdb5393 100644
--- a/src/AxiOmron.PcbCheck/ViewModels/MainWindowViewModel.cs
+++ b/src/AxiOmron.PcbCheck/ViewModels/MainWindowViewModel.cs
@@ -150,7 +150,7 @@ public partial class MainWindowViewModel : ObservableObject
     /// 获取或设置结果代码。
     /// </summary>
     [ObservableProperty]
-    private short _resultCode;
+    private ushort _resultCode;
 
     /// <summary>
     /// 获取或设置最近触发时间。
@@ -557,6 +557,7 @@ public partial class MainWindowViewModel : ObservableObject
         await AppendLogOnUiAsync(entry).ConfigureAwait(false);
     }
 
+    /// <summary>
     /// 处理管理员解锁倒计时，超时后自动恢复锁定。
     /// </summary>
     /// <param name="sender">事件源。</param>
diff --git a/src/AxiOmron.PcbCheck/appConfig.json b/src/AxiOmron.PcbCheck/appConfig.json
index 6eab135..65c240b 100644
--- a/src/AxiOmron.PcbCheck/appConfig.json
+++ b/src/AxiOmron.PcbCheck/appConfig.json
@@ -1,92 +1,92 @@
-{
-  "Plc": {
-    "Host": "127.0.0.1",
-    "Port": 9600,
-    "UnitAddress": 0,
-    "SourceNodeAddress": 25,
-    "EndianFormat": "BADC",
-    "PollIntervalMs": 200,
-    "ConnectTimeoutMs": 3000,
-    "ReleasePulseMs": 500,
-    "ReleaseAckTimeoutMs": 2000,
-    "Inputs": {
-      "PcbArrived": 101,
-      "PlcReset": 102,
-      "PlcAckRelease": 103
-    },
-    "Outputs": {
-      "PcBusy": 51,
-      "ReleasePermit": 52
-    },
-    "Registers": {
-      "ResultCode": 401
-    }
-  },
-  "Scanner": {
-    "Scanner1": {
-      "Name": "扫码枪1",
-      "Host": "127.0.0.1",
-      "Port": 2001
-    },
-    "Scanner2": {
-      "Name": "扫码枪2",
-      "Host": "127.0.0.1",
-      "Port": 2001
-    },
-    "ConnectTimeoutMs": 3000,
-    "ReadTimeoutMs": 3000,
-    "TriggerCommand": "T",
-    "ResponseTerminator": "\\r",
-    "TriggerInParallel": true
-  },
-  "FileCheck": {
-    "Provider": "Local",
-    "FileNamePattern": "${barcode}.txt",
-    "RetryIntervalSeconds": 2,
-    "MaxRetryCount": 3,
-    "Local": {
-      "RootPath": "D:\\PcbCheck\\Files"
-    }
-  },
-  "Sftp": {
-    "Host": "127.0.0.1",
-    "Port": 22,
-    "Username": "uaesadmin",
-    "Password": "uaes,123",
-    "PrivateKeyPath": "",
-    "PrivateKeyPassphrase": "",
-    "RootPath": "/home/uaesadmin/",
-    "FileNamePattern": "${barcode}.txt",
-    "RetryIntervalSeconds": 2,
-    "MaxRetryCount": 3,
-    "ConnectTimeoutMs": 3000
-  },
-  "Andon": {
-    "Enable": false,
-    "Url": "https://shp.prod.aliyun.mit.uaes.com/api/mit/MAE/Station/Status/alarm",
-    "Method": "POST",
-    "TimeoutMs": 3000,
-    "AndonTheme": "SS7_Auto_Andon",
-    "Eid": "PR1965269806334783488",
-    "FromSign": "IOT",
-    "ServiceId": "4dccd822-86b2-47dd-89bd-ca472ba0d14d",
-    "EnableScanFailAlarm": true,
-    "EnableFileNotFoundAlarm": false,
-    "Headers": {
-      "Accept": "application/json"
-    }
-  },
-  "Workflow": {
-    "RequireManualResetAfterFault": true,
-    "MaxUiLogEntries": 200,
-    "MaxBoardRecords": 100
-  },
-  "RecordPersistence": {
-    "DirectoryPath": "Data\\Records",
-    "DayChangeCheckIntervalSeconds": 30
-  },
-  "Security": {
-    "AdminPassword": "AxiOmron@123",
-    "AdminSessionTimeoutMinutes": 15
-  }
+{
+  "Plc": {
+    "Host": "192.168.2.100",
+    "Port": 9600,
+    "UnitAddress": 0,
+    "SourceNodeAddress": 0,
+    "EndianFormat": "ABCD",
+    "PollIntervalMs": 200,
+    "ConnectTimeoutMs": 3000,
+    "ReleasePulseMs": 500,
+    "ReleaseAckTimeoutMs": 2000,
+    "Inputs": {
+      "PcbArrived": 101,
+      "PlcReset": 102,
+      "PlcAckRelease": 103
+    },
+    "Outputs": {
+      "PcBusy": 51,
+      "ReleasePermit": 52
+    },
+    "Registers": {
+      "ResultCode": 401
+    }
+  },
+  "Scanner": {
+    "Scanner1": {
+      "Name": "\u626B\u7801\u67AA1",
+      "Host": "192.168.2.13",
+      "Port": 2001
+    },
+    "Scanner2": {
+      "Name": "\u626B\u7801\u67AA2",
+      "Host": "192.168.2.14",
+      "Port": 2001
+    },
+    "ConnectTimeoutMs": 3000,
+    "TriggerCommand": "T",
+    "ResponseTerminator": "",
+    "TriggerInParallel": true,
+    "ReadTimeoutMs": 5000
+  },
+  "FileCheck": {
+    "Provider": "Local",
+    "FileNamePattern": "${barcode}.txt",
+    "RetryIntervalSeconds": 2,
+    "MaxRetryCount": 3,
+    "Local": {
+      "RootPath": "D:\\test"
+    }
+  },
+  "Sftp": {
+    "Host": "127.0.0.1",
+    "Port": 22,
+    "Username": "uaesadmin",
+    "Password": "uaes,123",
+    "PrivateKeyPath": "",
+    "PrivateKeyPassphrase": "",
+    "RootPath": "/home/uaesadmin/",
+    "FileNamePattern": "${barcode}.txt",
+    "RetryIntervalSeconds": 2,
+    "MaxRetryCount": 3,
+    "ConnectTimeoutMs": 3000
+  },
+  "Andon": {
+    "Enable": false,
+    "Url": "https://shp.prod.aliyun.mit.uaes.com/api/mit/MAE/Station/Status/alarm",
+    "Method": "POST",
+    "TimeoutMs": 3000,
+    "AndonTheme": "SS7_Auto_Andon",
+    "Eid": "PR1965269806334783488",
+    "FromSign": "IOT",
+    "ServiceId": "4dccd822-86b2-47dd-89bd-ca472ba0d14d",
+    "EnableScanFailAlarm": false,
+    "EnableFileNotFoundAlarm": false,
+    "Headers": {
+      "Accept": "application/json"
+    }
+  },
+  "Workflow": {
+    "RequireManualResetAfterFault": true,
+    "MaxUiLogEntries": 200,
+    "MaxBoardRecords": 100
+  },
+  "RecordPersistence": {
+    "DirectoryPath": "Data\\Records",
+    "DayChangeCheckIntervalSeconds": 30
+  },
+  "Security": {
+    "AdminPassword": "AxiOmron@123",
+    "AdminSessionTimeoutMinutes": 15
+  }
 }
\ No newline at end of file
diff --git a/tests/AxiOmron.PcbCheck.Tests/CsvBoardRecordRepositoryTests.cs b/tests/AxiOmron.PcbCheck.Tests/CsvBoardRecordRepositoryTests.cs
index c109899..94a1a49 100644
--- a/tests/AxiOmron.PcbCheck.Tests/CsvBoardRecordRepositoryTests.cs
+++ b/tests/AxiOmron.PcbCheck.Tests/CsvBoardRecordRepositoryTests.cs
@@ -37,10 +37,10 @@ public sealed class CsvBoardRecordRepositoryTests : IDisposable
             timeProvider);
 
         await repository.AppendAsync(
-            CreateRecord("PCB-001", new DateTimeOffset(2026, 4, 19, 8, 0, 0, TimeSpan.FromHours(8)), (short)WorkflowResultCode.Passed),
+            CreateRecord("PCB-001", new DateTimeOffset(2026, 4, 19, 8, 0, 0, TimeSpan.FromHours(8)), (ushort)WorkflowResultCode.Passed),
             CancellationToken.None);
         await repository.AppendAsync(
-            CreateRecord("PCB-002", new DateTimeOffset(2026, 4, 19, 8, 5, 0, TimeSpan.FromHours(8)), (short)WorkflowResultCode.NgReleased),
+            CreateRecord("PCB-002", new DateTimeOffset(2026, 4, 19, 8, 5, 0, TimeSpan.FromHours(8)), (ushort)WorkflowResultCode.NgReleased),
             CancellationToken.None);
 
         BoardRecordLoadResult result = await repository.LoadCurrentDayAsync(CancellationToken.None);
@@ -100,7 +100,7 @@ public sealed class CsvBoardRecordRepositoryTests : IDisposable
             timeProvider);
 
         await repository.AppendAsync(
-            CreateRecord("PCB-OLD", new DateTimeOffset(2026, 4, 19, 23, 59, 55, TimeSpan.FromHours(8)), (short)WorkflowResultCode.Passed),
+            CreateRecord("PCB-OLD", new DateTimeOffset(2026, 4, 19, 23, 59, 55, TimeSpan.FromHours(8)), (ushort)WorkflowResultCode.Passed),
             CancellationToken.None);
 
         timeProvider.SetLocalNow(new DateTimeOffset(2026, 4, 20, 0, 0, 10, TimeSpan.FromHours(8)));
@@ -131,7 +131,7 @@ public sealed class CsvBoardRecordRepositoryTests : IDisposable
     /// <param name="completedAt">完成时间。</param>
     /// <param name="resultCode">结果代码。</param>
     /// <returns>测试记录。</returns>
-    private static BoardProcessRecord CreateRecord(string barcode, DateTimeOffset completedAt, short resultCode)
+    private static BoardProcessRecord CreateRecord(string barcode, DateTimeOffset completedAt, ushort resultCode)
     {
         return new BoardProcessRecord
         {
@@ -141,7 +141,7 @@ public sealed class CsvBoardRecordRepositoryTests : IDisposable
             ScanTryCount = 1,
             SftpTryCount = 1,
             ResultCode = resultCode,
-            ResultDescription = resultCode == (short)WorkflowResultCode.Passed ? "OK" : "NG",
+            ResultDescription = resultCode == (ushort)WorkflowResultCode.Passed ? "OK" : "NG",
             ReleaseSent = true,
             AlarmRaised = false,
             ExceptionSummary = string.Empty
diff --git a/tests/AxiOmron.PcbCheck.Tests/MainWindowViewModelTests.cs b/tests/AxiOmron.PcbCheck.Tests/MainWindowViewModelTests.cs
index 85eecdf..c08f786 100644
--- a/tests/AxiOmron.PcbCheck.Tests/MainWindowViewModelTests.cs
+++ b/tests/AxiOmron.PcbCheck.Tests/MainWindowViewModelTests.cs
@@ -50,7 +50,7 @@ public sealed class MainWindowViewModelTests
                 Barcode = $"PCB-{index:D3}",
                 ScanTryCount = 1,
                 SftpTryCount = 1,
-                ResultCode = index % 2 == 0 ? (short)WorkflowResultCode.Passed : (short)WorkflowResultCode.NgReleased,
+                ResultCode = index % 2 == 0 ? (ushort)WorkflowResultCode.Passed : (ushort)WorkflowResultCode.NgReleased,
                 ResultDescription = index % 2 == 0 ? "OK" : "NG",
                 ReleaseSent = true,
                 AlarmRaised = false
diff --git a/tests/AxiOmron.PcbCheck.Tests/OmronFinsPlcServiceTests.cs b/tests/AxiOmron.PcbCheck.Tests/OmronFinsPlcServiceTests.cs
index 5016fc4..79eee1a 100644
--- a/tests/AxiOmron.PcbCheck.Tests/OmronFinsPlcServiceTests.cs
+++ b/tests/AxiOmron.PcbCheck.Tests/OmronFinsPlcServiceTests.cs
@@ -11,16 +11,16 @@ namespace AxiOmron.PcbCheck.Tests;
 public sealed class OmronFinsPlcServiceTests
 {
     /// <summary>
-    /// 默认字节序应使用 BADC，以匹配现场 D 区 Int16 的高低字节顺序。
+    /// 默认字节序应使用 ABCD，避免 UInt16 结果代码发生高低字节交换。
     /// </summary>
     [Fact]
-    public void ResolveEndianFormat_ShouldUseBadc_WhenConfigurationIsDefault()
+    public void ResolveEndianFormat_ShouldUseAbcd_WhenConfigurationIsDefault()
     {
         var options = new PlcOptions();
 
         EndianFormat result = OmronFinsPlcService.ResolveEndianFormat(options);
 
-        Assert.Equal(EndianFormat.BADC, result);
+        Assert.Equal(EndianFormat.ABCD, result);
     }
 
     /// <summary>
diff --git a/tests/AxiOmron.PcbCheck.Tests/ResultCodeTypeTests.cs b/tests/AxiOmron.PcbCheck.Tests/ResultCodeTypeTests.cs
index ca67826..3cc880d 100644
--- a/tests/AxiOmron.PcbCheck.Tests/ResultCodeTypeTests.cs
+++ b/tests/AxiOmron.PcbCheck.Tests/ResultCodeTypeTests.cs
@@ -5,29 +5,29 @@ using Xunit;
 namespace AxiOmron.PcbCheck.Tests;
 
 /// <summary>
-/// 验证结果代码在模型与界面层统一使用 16 位有符号整数。
+/// 验证结果代码在模型与界面层统一使用 16 位无符号整数。
 /// </summary>
 public sealed class ResultCodeTypeTests
 {
     /// <summary>
-    /// 结果代码枚举应以 Int16 作为底层类型，匹配 PLC 的 ResultCode 定义。
+    /// 结果代码枚举应以 UInt16 作为底层类型，匹配 PLC 的 ResultCode 定义。
     /// </summary>
     [Fact]
-    public void WorkflowResultCode_ShouldUseInt16UnderlyingType()
+    public void WorkflowResultCode_ShouldUseUInt16UnderlyingType()
     {
-        Assert.Equal(typeof(short), Enum.GetUnderlyingType(typeof(WorkflowResultCode)));
+        Assert.Equal(typeof(ushort), Enum.GetUnderlyingType(typeof(WorkflowResultCode)));
     }
 
     /// <summary>
-    /// 结果代码属性应统一使用 Int16，避免经过界面或快照时被误建模为 UInt16 或 Int32。
+    /// 结果代码属性应统一使用 UInt16，避免经过界面或快照时被误建模为 Int16 或 Int32。
     /// </summary>
     [Theory]
     [InlineData(typeof(RuntimeSnapshot))]
     [InlineData(typeof(PlcProcessState))]
     [InlineData(typeof(BoardProcessRecord))]
     [InlineData(typeof(MainWindowViewModel))]
-    public void ResultCodeProperties_ShouldUseInt16(Type ownerType)
+    public void ResultCodeProperties_ShouldUseUInt16(Type ownerType)
     {
-        Assert.Equal(typeof(short), ownerType.GetProperty("ResultCode")?.PropertyType);
+        Assert.Equal(typeof(ushort), ownerType.GetProperty("ResultCode")?.PropertyType);
     }
 }
diff --git a/tests/AxiOmron.PcbCheck.Tests/WorkflowHostedServiceTests.cs b/tests/AxiOmron.PcbCheck.Tests/WorkflowHostedServiceTests.cs
index e88a761..05b7c8f 100644
--- a/tests/AxiOmron.PcbCheck.Tests/WorkflowHostedServiceTests.cs
+++ b/tests/AxiOmron.PcbCheck.Tests/WorkflowHostedServiceTests.cs
@@ -148,12 +148,12 @@ public sealed class WorkflowHostedServiceTests
 
         Assert.True(scannerService.TriggerCount > 0);
         Assert.Contains(plcService.WrittenStates, state => state.ReleasePermit);
-        Assert.Contains(plcService.WrittenStates, state => state.ResultCode == (short)WorkflowResultCode.Passed);
+        Assert.Contains(plcService.WrittenStates, state => state.ResultCode == (ushort)WorkflowResultCode.Passed);
 
         RuntimeSnapshot snapshot = stateStore.GetSnapshot();
         Assert.Contains(snapshot.PlcMonitorItems, item => item.Name == "PcbArrived" && item.CurrentValue == "False");
         Assert.Contains(snapshot.PlcMonitorItems, item => item.Name == "PcBusy" && item.CurrentValue == "False");
-        Assert.Contains(snapshot.PlcMonitorItems, item => item.Name == "ResultCode" && item.CurrentValue == ((short)WorkflowResultCode.Passed).ToString());
+        Assert.Contains(snapshot.PlcMonitorItems, item => item.Name == "ResultCode" && item.CurrentValue == ((ushort)WorkflowResultCode.Passed).ToString());
         Assert.All(snapshot.PlcMonitorItems, item => Assert.NotEqual(default, item.LastUpdatedAt));
     }
 
@@ -217,7 +217,7 @@ public sealed class WorkflowHostedServiceTests
 
         Assert.Equal(1, scannerService.TriggerCount);
         Assert.Equal("PCB-MERGED", fileCheckService.LastBarcode);
-        Assert.Contains(plcService.WrittenStates, state => state.ResultCode == (short)WorkflowResultCode.Passed);
+        Assert.Contains(plcService.WrittenStates, state => state.ResultCode == (ushort)WorkflowResultCode.Passed);
     }
 
     /// <summary>
@@ -304,7 +304,7 @@ public sealed class WorkflowHostedServiceTests
                         Barcode = "PCB-RESTORED",
                         ScanTryCount = 1,
                         SftpTryCount = 1,
-                        ResultCode = (short)WorkflowResultCode.Passed,
+                        ResultCode = (ushort)WorkflowResultCode.Passed,
                         ResultDescription = "OK",
                         ReleaseSent = true
                     }
@@ -409,7 +409,7 @@ public sealed class WorkflowHostedServiceTests
 
         RuntimeSnapshot snapshot = stateStore.GetSnapshot();
         Assert.NotEqual(WorkflowState.Faulted, snapshot.WorkflowState);
-        Assert.Equal((short)WorkflowResultCode.Passed, snapshot.ResultCode);
+        Assert.Equal((ushort)WorkflowResultCode.Passed, snapshot.ResultCode);
     }
 
     private sealed class FakePlcService : IPlcService