diff --git a/MECF.Framework.Common/MECF/Framework/Common/IOCore/IoManager.cs b/MECF.Framework.Common/MECF/Framework/Common/IOCore/IoManager.cs
index 323f301..50a87b4 100644
--- a/MECF.Framework.Common/MECF/Framework/Common/IOCore/IoManager.cs
+++ b/MECF.Framework.Common/MECF/Framework/Common/IOCore/IoManager.cs
@@ -50,7 +50,7 @@ namespace MECF.Framework.Common.IOCore
 		private Dictionary<string, List<NotifiableIoItem>> _ioItemList = new Dictionary<string, List<NotifiableIoItem>>();
 
 		private PeriodicJob _monitorThread;
-
+		
 		public void Initialize(string interlockConfigFile)
 		{
 			string reason = string.Empty;
@@ -58,7 +58,6 @@ namespace MECF.Framework.Common.IOCore
 			{
 				throw new Exception($"interlock define file found error: \r\n {reason}");
 			}
-			_monitorThread = new PeriodicJob(200, OnTimer, "IO Monitor Thread", isStartNow: true);
 		}
 
 		private bool OnTimer()
@@ -113,6 +112,8 @@ namespace MECF.Framework.Common.IOCore
 			OP.Subscribe("System.SetAoValueWithPrivoder", InvokeSetAoWithPrivoder);
 			OP.Subscribe("System.SetAiBuffer", InvokeSetAiBuffer);
 			OP.Subscribe("System.SetDiBuffer", InvokeSetDiBuffer);
+			
+			_monitorThread = new PeriodicJob(200, OnTimer, "IO Monitor Thread", isStartNow: true);
 		}
 
 		private bool InvokeSetDo(string arg1, object[] args)