Merge branch 'master' of http://111.9.47.105:10244/xxe/HKCard

HKControl/Siemens.cs

@@ -82,7 +82,11 @@ namespace HKControl
         {
             try
             {
-                if (!IsConnected) return default;
+                if (!IsConnected)
+                {
+                    ExceptionDis();
+                    return default;
+                } 
                 return (TResult)myPlc?.Read(address);
             }
             catch (Exception ex)