diff --git a/MECF.Framework.Common/Aitex/Core/RT/IOCore/IOType.cs b/MECF.Framework.Common/Aitex/Core/RT/IOCore/IOType.cs
index 27202ad..dbe7039 100644
--- a/MECF.Framework.Common/Aitex/Core/RT/IOCore/IOType.cs
+++ b/MECF.Framework.Common/Aitex/Core/RT/IOCore/IOType.cs
@@ -9,29 +9,4 @@ namespace Aitex.Core.RT.IOCore
 		AI = 2,
 		AO = 3
 	}
-
-	public static class IoCoreExtensions
-	{
-		public static IOType ToIoType(this string ioName)
-		{
-			IOType ioType;
-			// 根据IO名称前缀确定IO类型
-			if (ioName.StartsWith("DI_"))
-				ioType = IOType.DI;
-			else if(ioName.StartsWith("DO_"))
-				ioType = IOType.DO;
-			else if(ioName.StartsWith("AI_"))
-				ioType = IOType.AI;
-			else if(ioName.StartsWith("AO_"))
-				ioType = IOType.AO;
-			else
-			{
-				var err = $"Undefined prefix of io name '{ioName}' of interlock limit.";
-				LOG.Error(err);
-				throw new InvalidIoNameException(err);
-			}
-
-			return ioType;
-		}
-	}
 }
diff --git a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockAction.cs b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockAction.cs
index c48d089..db167ad 100644
--- a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockAction.cs
+++ b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockAction.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Text;
 
 namespace Aitex.Core.RT.IOCore
 {
@@ -48,32 +49,38 @@ namespace Aitex.Core.RT.IOCore
 			
 			// 如果DO已经输出Action定义的电平，则反向
 			if (_do.SetValue(!_actionValue, out reason))
-				reason = $"Force setting DO-{_do.IoTableIndex}({_do.Name}) = [{((!_actionValue) ? "ON" : "OFF")}]";
+				reason = $"Interlock Force set DO-{_do.IoTableIndex}({_do.Name}) = [{((!_actionValue) ? "ON" : "OFF")}]";
 			return true;
 		}
 
 		public bool CanDo(out string reason)
 		{
 			reason = string.Empty;
-			bool result = true;
+			var sbReason = new StringBuilder();
+			var result = true;
 			foreach (var limit in _limits)
 			{
-				if (!limit.CanDo(out var reason2))
+				if (!limit.CanDo(out var limitReason))
 				{
-					if (reason.Length > 0)
-					{
-						reason += "\n";
-					}
-					else
-					{
-						reason =
-							$"Interlock triggered, DO-{_do.IoTableIndex}({_do.Name}) can not be [{(_actionValue ? "ON" : "OFF")}], {_tip} \n";
-					}
-					reason += reason2;
+					sbReason.AppendLine(limitReason);
 					result = false;
 				}
 			}
+
+			// 如果有互锁被触发，则打印互锁信息
+			if (!result)
+			{
+				sbReason.Insert(0,
+					$"Interlock triggered, DO-{_do.IoTableIndex}({_do.Name}) can not be [{(_actionValue ? "ON" : "OFF")}], {_tip} \r\n");
+				reason = sbReason.ToString();
+			}
+			
 			return result;
 		}
+
+		public override string ToString()
+		{
+			return $"{ActionName}, Action={_actionValue}, Limit Count={_limits.Count}";
+		}
 	}
 }
diff --git a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeDouble.cs b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeDouble.cs
index d861c70..dafc0c2 100644
--- a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeDouble.cs
+++ b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeDouble.cs
@@ -16,8 +16,8 @@ public class InterlockLimitRangeDouble : IAnalogInterlockLimitRange<double>
             Min = min;
             Max = max;
         }
-
-        throw new InvalidCastException($"unable to convert {value} to double range.");
+        else
+            throw new InvalidCastException($"unable to convert {value} to double range.");
     }
     
     public InterlockLimitRangeDouble(double min, double max)
diff --git a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeInt.cs b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeInt.cs
index 3cdd457..bc1aad6 100644
--- a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeInt.cs
+++ b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeInt.cs
@@ -1,9 +1,25 @@
+using System;
+
 namespace Aitex.Core.RT.IOCore;
 
 public class InterlockLimitRangeInt: IAnalogInterlockLimitRange<int>
 {
     #region Constructors
 
+    public InterlockLimitRangeInt(string value)
+    {
+        var strValues = value.Split(':');
+        if (strValues.Length == 2
+            && int.TryParse(strValues[0], out var min)
+            && int.TryParse(strValues[1], out var max))
+        {
+            Min = min;
+            Max = max;
+        }
+        else
+            throw new InvalidCastException($"unable to convert {value} to double range.");
+    }
+    
     public InterlockLimitRangeInt(short min, short max)
     {
         Min = min;
diff --git a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeShort.cs b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeShort.cs
index 1f1631f..b109aaf 100644
--- a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeShort.cs
+++ b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockLimitRangeShort.cs
@@ -1,8 +1,24 @@
+using System;
+
 namespace Aitex.Core.RT.IOCore;
 
 public class InterlockLimitRangeShort : IAnalogInterlockLimitRange<short>
 {
     #region Constructors
+    
+    public InterlockLimitRangeShort(string value)
+    {
+        var strValues = value.Split(':');
+        if (strValues.Length == 2
+            && short.TryParse(strValues[0], out var min)
+            && short.TryParse(strValues[1], out var max))
+        {
+            Min = min;
+            Max = max;
+        }
+        else
+            throw new InvalidCastException($"unable to convert {value} to double range.");
+    }
 
     public InterlockLimitRangeShort(short min, short max)
     {
diff --git a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockManager.cs b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockManager.cs
index 1c5b474..f22f19e 100644
--- a/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockManager.cs
+++ b/MECF.Framework.Common/Aitex/Core/RT/IOCore/Interlock/InterlockManager.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Text;
 using System.Xml;
@@ -158,12 +159,15 @@ namespace Aitex.Core.RT.IOCore
 			        {
 				        // 检查InterlockLimit是否已经存在于字典中
 				        var limitInDic = _dicLimitToActionMap.Keys.FirstOrDefault(x => x.UniqueId == limit.UniqueId);
+				        Debug.Assert(limitInDic != null, "The condition should never be hit");
 				        
 				        // 存在则插入InterlockAction；不存在则新建
 				        if (limitInDic != null)
 					        _dicLimitToActionMap[limitInDic].Add(newAction);
 				        else
+				        {
 					        _dicLimitToActionMap[limit] = new List<InterlockAction> { newAction };
+				        }
 			        }
 		        }
 	        }
@@ -249,22 +253,25 @@ namespace Aitex.Core.RT.IOCore
 		/// <param name="cultureTip">多国语言提示信息。</param>
 		/// <param name="reason">创建失败并返回null的原因。</param>
 		/// <returns>互锁限制条件对象的实例。</returns>
-		private static IInterlockLimit CreateInterlockLimit(string ioName, string limitValue, string tip,
+		private static IInterlockLimit CreateInterlockLimit(IOType ioType, string ioName, string limitValue, string tip,
 			Dictionary<string, string> cultureTip , out string reason)
 		{
+			Debug.Assert(Enum.TryParse<IOType>(ioType.ToString(), out _),"Undefined IO Type");
+			Debug.Assert(!string.IsNullOrEmpty(ioName),"IO Name can not be empty");
+			Debug.Assert(!string.IsNullOrEmpty(limitValue),"LimitValue can not be empty");
+			
 			reason = "";
-			var type = ioName.ToIoType();
 			
 			// 创建一个InterlockLimit实例。
 			IIOAccessor io;
 			IInterlockLimit limit;
 			try
 			{
-				io = GetIoByIoType(ioName.ToIoType(), ioName);
+				io = GetIoByIoType(ioType, ioName);
 			}
 			catch (IoNotFoundException)
 			{
-				reason = $"limit node {ioName} no such {ioName.ToIoType()} defined";
+				reason = $"limit node {ioName} no such {ioType} defined";
 				return null;
 			}
 			catch (InvalidIoTypeExeption)
@@ -273,7 +280,7 @@ namespace Aitex.Core.RT.IOCore
 				return null;
 			}
 				
-			switch (type)
+			switch (ioType)
 			{
 				case IOType.DI:
 					limit = new DiLimit((DIAccessor)io, limitValue, tip, cultureTip);
@@ -301,7 +308,10 @@ namespace Aitex.Core.RT.IOCore
 
 			// 如果不存在，则返回新创建的对象。
 			if (limitExist == null)
+			{
+				_dicLimitToActionMap.Add(limit, new List<InterlockAction>());
 				return limit;
+			}
 
 			// 返回已存在的对象。
 			return limitExist;
@@ -330,18 +340,29 @@ namespace Aitex.Core.RT.IOCore
 				return null;
 			}
 			
-			// 节点不包含‘di’、‘do’、‘ai’、‘ao’、‘io’，或者不包含‘value’属性
+			// 节点不包含‘di’、‘do’、‘ai’、‘ao’，或者不包含‘value’属性
 			string limitIoName;
+			IOType limitIoType;
 			if (xmlNodeLimit.HasAttribute("di"))
+			{
 				limitIoName = xmlNodeLimit.GetAttribute("di");
+				limitIoType = IOType.DI;
+			}
 			else if (xmlNodeLimit.HasAttribute("do"))
+			{
 				limitIoName = xmlNodeLimit.GetAttribute("do");
+				limitIoType = IOType.DO;
+			}
 			else if (xmlNodeLimit.HasAttribute("ai"))
+			{
 				limitIoName = xmlNodeLimit.GetAttribute("ai");
+				limitIoType = IOType.AI;
+			}
 			else if (xmlNodeLimit.HasAttribute("ao"))
+			{
 				limitIoName = xmlNodeLimit.GetAttribute("ao");
-			else if (xmlNodeLimit.HasAttribute("io"))
-				limitIoName = xmlNodeLimit.GetAttribute("io");
+				limitIoType = IOType.AO;
+			}
 			else
 			{
 				reason = "limit node lack of di/do/ai/ao/io attribute";
@@ -374,7 +395,7 @@ namespace Aitex.Core.RT.IOCore
 				dicLimitTips["en-US"] = xmlNodeLimit.GetAttribute("tip.en-US");
 			}
 
-			var limit = CreateInterlockLimit(limitIoName, limitValue, tip, dicLimitTips, out reason);
+			var limit = CreateInterlockLimit(limitIoType, limitIoName, limitValue, tip, dicLimitTips, out reason);
 			return limit;
 		}
 		
diff --git a/MECF.Framework.Common/MECF/Framework/Common/SCCore/ISCManager.cs b/MECF.Framework.Common/MECF/Framework/Common/SCCore/ISCManager.cs
index f20a088..6705cdc 100644
--- a/MECF.Framework.Common/MECF/Framework/Common/SCCore/ISCManager.cs
+++ b/MECF.Framework.Common/MECF/Framework/Common/SCCore/ISCManager.cs
@@ -34,13 +34,13 @@ namespace MECF.Framework.Common.SCCore
 
 
         /// <summary>
-        /// ע��һ���ص���������ָ������������仯ʱ�����ô˺�����
+        /// 注册一个回调函数，当指定的配置项发生变化时，调用此函数。
         /// </summary>
-        /// <param name="name">ϵͳ���������ơ�</param>
+        /// <param name="name">系统配置项名称。</param>
         /// <param name="callback">
-        /// ��������ֵ�仯ʱ�����ô�ί�С�
+        /// 当配置项值变化时，调用此委托。
         /// <br/>
-        /// ��ί�еĴ������Ϊϵͳ����ֵ��������ֵ��
+        /// 此委托的传入参数为系统配置值变更后的新值。
         /// </param>
         void RegisterValueChangedCallback(string name, Action<object> callback);
     }