diff --git a/MTC_Adapter/MTC_Adapter/AdapterSiemens.cs b/MTC_Adapter/MTC_Adapter/AdapterSiemens.cs
index 53eb21e..7240624 100644
--- a/MTC_Adapter/MTC_Adapter/AdapterSiemens.cs
+++ b/MTC_Adapter/MTC_Adapter/AdapterSiemens.cs
@@ -27,8 +27,7 @@ namespace MTC_Adapter
         /// Area di memoria base x dati TESTE (DB254)
         /// </summary>
         protected int baseMemUO = 254;
-
-
+        
         /// <summary>
         /// wrapper chiamata lettura/scrittura SINGOLO BYTE...
         /// </summary>
@@ -159,7 +158,9 @@ namespace MTC_Adapter
 
             lg.Info("Start init Adapter SIEMENS", utils.CRS("ipPLC"));
 
+            parentForm.commPlcActive = true;
             Runtime.CreateNC(CNC.NcType.SIEMENS, utils.CRS("ipPLC"));
+            parentForm.commPlcActive = false;
 
             // inizializzo posizioni assi...
             prevPosAxis = new double[adpConf.nAxis];
@@ -332,9 +333,7 @@ namespace MTC_Adapter
             try
             {
                 inizio = DateTime.Now;
-#if false
                 SIEMENSMemRW_Byte(W, baseMemDb, memIndexAck, ref currACK_DW); 
-#endif
                 if (utils.CRB("recTime")) TimingData.addResult(string.Format("W{0}-ACK_DW0", currACK_DW.Length), DateTime.Now.Subtract(inizio).Ticks);
                 fatto = true;
             }
@@ -376,11 +375,8 @@ namespace MTC_Adapter
         /// <returns></returns>
         public override bool writeWatchDog(ref byte[] retACK_DW)
         {
-            return false;
-#if false
-            int memIndex = 38;
+            int memIndex = 8;
             return SIEMENSMemRW_Byte(W, baseMemDb, memIndex, ref retACK_DW); 
-#endif
         }
         /// <summary>
         /// Effettua lettura dati TESTING
@@ -413,12 +409,9 @@ namespace MTC_Adapter
         /// <returns></returns>
         public override bool writeAlarmAck(ref byte[] retACK_DW0)
         {
-            return false;
-#if false
             // DB1499.DBX0.0
             int memIndexAck = 0;
             return SIEMENSMemRW_Byte(W, baseMemDb, memIndexAck, ref retACK_DW0); 
-#endif
         }
 
         /// <summary>