diff --git a/DOAN.ServiceCore/BackgroundService.cs b/DOAN.ServiceCore/BackgroundService.cs
index 0d40ea4..d528f87 100644
--- a/DOAN.ServiceCore/BackgroundService.cs
+++ b/DOAN.ServiceCore/BackgroundService.cs
@@ -75,7 +75,7 @@ namespace DOAN.ServiceCore
 
 
                 await Task.Delay(3000, stoppingToken);
-
+                Console.WriteLine("永驻线程，正在读取plc值  ");
 
                 index++;
                 if (index > 16)