diff --git a/Sharp7.Rx/Extensions/PlcExtensions.cs b/Sharp7.Rx/Extensions/PlcExtensions.cs
index 619dd24..14e3e58 100644
--- a/Sharp7.Rx/Extensions/PlcExtensions.cs
+++ b/Sharp7.Rx/Extensions/PlcExtensions.cs
@@ -18,7 +18,7 @@ namespace Sharp7.Rx.Extensions
                 var subscriptions = new CompositeDisposable();
 
                 var notification = plc
-                    .CreateNotification<bool>(triggerAddress, TransmissionMode.OnChange, TimeSpan.Zero)
+                    .CreateNotification<bool>(triggerAddress, TransmissionMode.OnChange)
                     .Publish()
                     .RefCount();
 
diff --git a/Sharp7.Rx/Interfaces/IPlc.cs b/Sharp7.Rx/Interfaces/IPlc.cs
index e5c4c89..a438957 100644
--- a/Sharp7.Rx/Interfaces/IPlc.cs
+++ b/Sharp7.Rx/Interfaces/IPlc.cs
@@ -7,7 +7,7 @@ namespace Sharp7.Rx.Interfaces
 {
     public interface IPlc : IDisposable
     {
-        IObservable<TValue> CreateNotification<TValue>(string variableName, TransmissionMode transmissionMode, TimeSpan cycleSpan);
+        IObservable<TValue> CreateNotification<TValue>(string variableName, TransmissionMode transmissionMode);
         Task SetValue<TValue>(string variableName, TValue value);
         Task<TValue> GetValue<TValue>(string variableName);
 		IObservable<ConnectionState> ConnectionState { get; }
diff --git a/Sharp7.Rx/Sharp7Plc.cs b/Sharp7.Rx/Sharp7Plc.cs
index a1a7664..fb0a4f4 100644
--- a/Sharp7.Rx/Sharp7Plc.cs
+++ b/Sharp7.Rx/Sharp7Plc.cs
@@ -153,7 +153,7 @@ namespace Sharp7.Rx
             }
         }
 
-        public IObservable<TValue> CreateNotification<TValue>(string variableName, TransmissionMode transmissionMode, TimeSpan cycleTime)
+        public IObservable<TValue> CreateNotification<TValue>(string variableName, TransmissionMode transmissionMode)
         {
             return Observable.Create<TValue>(observer =>
             {