diff --git a/RIZO.Service/PLCbackTask/MES_PLC_InterationTask.cs b/RIZO.Service/PLCbackTask/MES_PLC_InterationTask.cs
index 4fc6d84..65b47dd 100644
--- a/RIZO.Service/PLCbackTask/MES_PLC_InterationTask.cs
+++ b/RIZO.Service/PLCbackTask/MES_PLC_InterationTask.cs
@@ -50,7 +50,8 @@ namespace RIZO.Service.PLCbackTask
                             if (!isConnected)
                             {
                                 _logger.Error("Failed to connect to PLC.");
-                                break;
+                                Task.Delay(1000, stoppingToken);
+                                continue;
                             }
                         }