diff --git a/Service/MyTask/PlcHeartTask.cs b/Service/MyTask/PlcHeartTask.cs
index ca9ff38..cb13f51 100644
--- a/Service/MyTask/PlcHeartTask.cs
+++ b/Service/MyTask/PlcHeartTask.cs
@@ -20,7 +20,7 @@ public class PlcHeartTask: ITask
 
     public int Interval()
     {
-        return 1000 * 2;
+        return 1000 * 4;
     }