diff --git a/IOB-WIN-FORM/AdapterForm.cs b/IOB-WIN-FORM/AdapterForm.cs
index a1137d03..e36ab976 100644
--- a/IOB-WIN-FORM/AdapterForm.cs
+++ b/IOB-WIN-FORM/AdapterForm.cs
@@ -169,7 +169,7 @@ namespace IOB_WIN_FORM
 
         #region Public Properties
 
-        public int alQueueLen
+        public long alQueueLen
         {
             set
             {
@@ -442,7 +442,7 @@ namespace IOB_WIN_FORM
 
         public bool enableEditMes2Plc { get; set; }
 
-        public int evQueueLen
+        public long evQueueLen
         {
             set
             {
@@ -467,7 +467,7 @@ namespace IOB_WIN_FORM
             }
         }
 
-        public int flQueueLen
+        public long flQueueLen
         {
             set
             {
@@ -554,7 +554,7 @@ namespace IOB_WIN_FORM
             }
         }
 
-        public int msQueueLen
+        public long msQueueLen
         {
             set
             {
@@ -601,7 +601,7 @@ namespace IOB_WIN_FORM
             }
         }
 
-        public int rtrQueueLen
+        public long rtrQueueLen
         {
             set
             {
@@ -701,7 +701,7 @@ namespace IOB_WIN_FORM
             }
         }
 
-        public int ulQueueLen
+        public long ulQueueLen
         {
             set
             {
@@ -1049,31 +1049,31 @@ namespace IOB_WIN_FORM
         /// </summary>
         protected DateTime logWatchWriteVeto { get; set; } = DateTime.Now;
 
-        protected int maxAlQueue { get; set; }
+        protected long maxAlQueue { get; set; }
 
-        protected int maxEvQueue { get; set; }
+        protected long maxEvQueue { get; set; }
 
-        protected int maxFlQueue { get; set; }
+        protected long maxFlQueue { get; set; }
 
-        protected int maxMsQueue { get; set; }
+        protected long maxMsQueue { get; set; }
 
-        protected int maxRwTrQueue { get; set; }
+        protected long maxRwTrQueue { get; set; }
 
-        protected int maxUlQueue { get; set; }
+        protected long maxUlQueue { get; set; }
 
-        protected int qAlLen { get; set; }
+        protected long qAlLen { get; set; }
 
-        protected int qEvLen { get; set; }
+        protected long qEvLen { get; set; }
 
-        protected int qFlLen { get; set; }
+        protected long qFlLen { get; set; }
 
-        protected int qMsLen { get; set; }
+        protected long qMsLen { get; set; }
 
-        protected int qRTrLen { get; set; }
+        protected long qRTrLen { get; set; }
 
-        protected int qUlLen { get; set; }
+        protected long qUlLen { get; set; }
 
-        protected int totQueue
+        protected long totQueue
         {
             get
             {
diff --git a/IOB-WIN-FORM/Iob/PingWatchDog.cs b/IOB-WIN-FORM/Iob/PingWatchDog.cs
index 21595418..865d5319 100644
--- a/IOB-WIN-FORM/Iob/PingWatchDog.cs
+++ b/IOB-WIN-FORM/Iob/PingWatchDog.cs
@@ -258,12 +258,12 @@ namespace IOB_WIN_FORM.Iob
         protected bool pingStatusOk()
         {
             bool answ = true;
-            int numVal = PingQueue.Count;
+            long numVal = PingQueue.Count;
             if (numVal > maxQueuePing / 2)
             {
                 var listaValori = PingQueue.ToList();
-                int numOk = listaValori.Where(x => x == "1").Count();
-                int numKo = numVal - numOk;
+                long numOk = listaValori.Where(x => x == "1").Count();
+                long numKo = numVal - numOk;
                 answ = numOk >= numKo;
                 lgTrace($"PING ok per: {numOk} > {numKo}");
             }