diff --git a/AppData/ComLib.cs b/AppData/ComLib.cs
index 317ced6..ec32b7c 100644
--- a/AppData/ComLib.cs
+++ b/AppData/ComLib.cs
@@ -184,7 +184,7 @@ namespace AppData
         public static string redOutPath = "NKC:SERV:BREQ";
         public static string redMsgCount = "NKC:SERV:BREQ:MCount";
         public static string redMsgList = "NKC:SERV:BREQ:MList";
-        public static string redMLCurrStack = "NKC:SERV:TAKT:CurrStack";
+        public static string redMLCurrBunk = "NKC:SERV:TAKT:CurrBunk";
 
         public static string redNestAnsw = "NKC:NEST:BANSW";
 
@@ -1165,29 +1165,121 @@ namespace AppData
         /// <summary>
         /// Chiave bunk corrente su redis
         /// </summary>
+        /// <param name="machine"></param>
+        /// <returns></returns>
         protected static string redCurrBunkTabKey(string machine)
         {
+            string answ = "";
             if (string.IsNullOrEmpty(machine))
             {
-                machine = "WRK001";
+                answ = $"{redProdReq}:CurrBunks";
             }
-            return $"{redProdReq}:CurrBunks:{machine}";
+            else
+            {
+                answ = $"{redProdReq}:CurrBunks:{machine}";
+            }
+            return answ;
         }
         /// <summary>
-        /// Chiave bunk corrente su redis
+        /// Chiave sheets correnti su redis
         /// </summary>
-        protected static string redCurrSheetTabKey()
+        /// <param name="machine"></param>
+        /// <returns></returns>
+        protected static string redCurrSheetTabKey(string machine)
         {
-            return $"{redProdReq}:CurrSheets";
+            string answ = "";
+            if (string.IsNullOrEmpty(machine))
+            {
+                answ = $"{redProdReq}:CurrSheets";
+            }
+            else
+            {
+                answ = $"{redProdReq}:CurrSheets:{machine}";
+            }
+            return answ;
+        }
+        /// <summary>
+        /// Chiave Bunk corrente su redis
+        /// </summary>
+        /// <param name="machine"></param>
+        /// <returns></returns>
+        protected static string redCurrBunkId(string machine)
+        {
+            string answ = "";
+            if (string.IsNullOrEmpty(machine))
+            {
+                answ = $"{redProdReq}:CurrBunkID";
+            }
+            else
+            {
+                answ = $"{redProdReq}:CurrBunkID:{machine}";
+            }
+            return answ;
+        }
+        /// <summary>
+        /// Chiave Sheets corrente su redis
+        /// </summary>
+        /// <param name="machine"></param>
+        /// <returns></returns>
+        protected static string redCurrSheetId(string machine)
+        {
+            string answ = "";
+            if (string.IsNullOrEmpty(machine))
+            {
+                answ = $"{redProdReq}:CurrSheetID";
+            }
+            else
+            {
+                answ = $"{redProdReq}:CurrSheetID:{machine}";
+            }
+            return answ;
         }
         /// <summary>
         /// Resetto in REDIS i dati di bunk (corrente e successivi)
         /// </summary>
-        public static void resetRedisBunkData()
+        public static void resetRedisBunkData(string machine)
         {
+            resetCurrBunk();
+            resetCurrSheet();
+            setCurrBunkId(machine, -2);
+            setCurrSheetId(machine, -2);
             redisFirstBunk = null;
         }
         /// <summary>
+        /// Cache redis del BunkID in lavorazione sulla macchina
+        /// </summary>
+        public static int getCurrBunkId(string macchina)
+        {
+            int answ = -1;
+            string rawData = memLayer.ML.getRSV(redCurrBunkId(macchina));
+            int.TryParse(rawData, out answ);
+            return answ;
+        }
+        /// <summary>
+        /// Salvataggio in redis del BunkID in lavorazione sulla macchina
+        /// </summary>
+        public static void setCurrBunkId(string macchina, int BunkID)
+        {
+            memLayer.ML.setRSV(redCurrBunkId(macchina), BunkID.ToString());
+        }
+        /// <summary>
+        /// Cache redis del SheetID in lavorazione sulla macchina
+        /// </summary>
+        public static int getCurrSheetId(string macchina)
+        {
+            int answ = -1;
+            string rawData = memLayer.ML.getRSV(redCurrSheetId(macchina));
+            int.TryParse(rawData, out answ);
+            return answ;
+        }
+        /// <summary>
+        /// Salvataggio in redis del SheetID in lavorazione sulla macchina
+        /// </summary>
+        public static void setCurrSheetId(string macchina, int SheetID)
+        {
+            memLayer.ML.setRSV(redCurrBunkId(macchina), SheetID.ToString());
+        }
+        /// <summary>
         /// Cache redis del PRIMO bunk da lavorare
         /// </summary>
         private static ProdBunk redisFirstBunk
@@ -1465,7 +1557,7 @@ namespace AppData
         /// resetto curr bunk
         /// </summary>
         /// <param name="machine"></param>
-        protected static void resetCurrBunk(string machine = "WRK001")
+        public static void resetCurrBunk(string machine = "WRK001")
         {
             // svuoto"
             memLayer.ML.redFlushKey(redCurrBunkTabKey(machine));
@@ -1523,8 +1615,9 @@ namespace AppData
         /// Recupera lo sheet corrente da un BUNK come quello in status 5...
         /// </summary>
         /// <param name="BatchID"></param>
+        /// <param name="machine"></param>
         /// <returns></returns>
-        public static DS_App.SheetListRow getCurrSheet(int BatchID)
+        public static DS_App.SheetListRow getCurrSheet(int BatchID, string machine)
         {
             DS_App.SheetListRow answ = null;
             if (BatchID > 0)
@@ -1533,17 +1626,18 @@ namespace AppData
                 {
                     DS_App.SheetListDataTable tabSheets = null;
                     // cerco in cache....
-                    if (cachedCurrSheetTab != null)
+                    if (getCurrSheetTab(machine) != null)
                     {
-                        tabSheets = cachedCurrSheetTab;
+                        tabSheets = getCurrSheetTab(machine);
                     }
                     else
                     {
                         // recupero sheet corrente da Bunk...
                         tabSheets = DataLayer.man.taSHL.getByMLStatus(BatchID, 5, 5);
                         // salvo in redis
-                        cachedCurrSheetTab = tabSheets;
+                        setCurrSheetTab(machine, tabSheets);
                     }
+                    // leggo prima riga --> foglio corrente
                     if (tabSheets != null && tabSheets.Count > 0)
                     {
                         answ = tabSheets[0];
@@ -1554,31 +1648,44 @@ namespace AppData
             }
             return answ;
         }
-
-        protected static DS_App.SheetListDataTable cachedCurrSheetTab
+        /// <summary>
+        /// resetto curr sheets
+        /// </summary>
+        /// <param name="machine"></param>
+        public static void resetCurrSheet(string machine = "WRK001")
         {
-            get
+            // svuoto"
+            memLayer.ML.redFlushKey(redCurrSheetTabKey(machine));
+        }
+        /// <summary>
+        /// Recupero da redis tab fogli correnti
+        /// </summary>
+        protected static DS_App.SheetListDataTable getCurrSheetTab(string machine)
+        {
+            DS_App.SheetListDataTable answ = null;
+            string rawData = memLayer.ML.getRSV(redCurrSheetTabKey(machine));
+            if (!string.IsNullOrEmpty(rawData))
             {
-                DS_App.SheetListDataTable answ = null;
-                string rawData = memLayer.ML.getRSV(redCurrSheetTabKey());
-                if (!string.IsNullOrEmpty(rawData))
+                try
                 {
-                    try
-                    {
-                        // deserializzo...
-                        answ = JsonConvert.DeserializeObject<DS_App.SheetListDataTable>(rawData);
-                    }
-                    catch
-                    { }
+                    // deserializzo...
+                    answ = JsonConvert.DeserializeObject<DS_App.SheetListDataTable>(rawData);
                 }
-                return answ;
-            }
-            set
-            {
-                string rawData = JsonConvert.SerializeObject(value);
-                // TTL 5 sec
-                memLayer.ML.setRSV(redCurrSheetTabKey(), rawData, 5);
+                catch
+                { }
             }
+            return answ;
+        }
+        /// <summary>
+        /// Salvataggio in redis tab fogli correnti
+        /// </summary>
+        /// <param name="machine"></param>
+        /// <param name="tabella"></param>
+        protected static void setCurrSheetTab(string machine, DS_App.SheetListDataTable tabella)
+        {
+            string rawData = JsonConvert.SerializeObject(tabella);
+            // TTL 5 sec
+            memLayer.ML.setRSV(redCurrSheetTabKey(machine), rawData, 2);
         }
         /// <summary>
         /// Restituisce il PROSSIMO bunk secondo criterio:
@@ -1791,17 +1898,17 @@ namespace AppData
             return answ;
         }
         /// <summary>
-        /// Valore dello Stack correntemente in processing per ML (MachineLoad)
+        /// ID del BUNK correntemente in processing per ML (MachineLoad)
         /// </summary>
-        public static string taktMLCurrStack
+        public static string taktMLCurrBunk
         {
             get
             {
-                return memLayer.ML.getRSV(redMLCurrStack);
+                return memLayer.ML.getRSV(redMLCurrBunk);
             }
             set
             {
-                memLayer.ML.setRSV(redMLCurrStack, value);
+                memLayer.ML.setRSV(redMLCurrBunk, value);
             }
         }
 
diff --git a/NKC_WF/Controllers/BunkController.cs b/NKC_WF/Controllers/BunkController.cs
index a657d43..00c51f5 100644
--- a/NKC_WF/Controllers/BunkController.cs
+++ b/NKC_WF/Controllers/BunkController.cs
@@ -8,6 +8,10 @@ namespace NKC_WF.Controllers
 {
     public class BunkController : ApiController
     {
+        /// <summary>
+        /// COdice macchina (HARD CODED)
+        /// </summary>
+        protected string machine = "WRK001";
         /// <summary>
         /// Restituisce il FIRST BUNK da lavorare
         /// GET: api/Bunk
@@ -101,7 +105,7 @@ namespace NKC_WF.Controllers
                 }
             }
             // INVALIDO eventuale valore BUNK in REDIS...
-            ComLib.resetRedisBunkData();
+            ComLib.resetRedisBunkData(machine);
         }
 
         /// <summary>
diff --git a/NKC_WF/Controllers/SheetController.cs b/NKC_WF/Controllers/SheetController.cs
index 7b9e50a..fbe76af 100644
--- a/NKC_WF/Controllers/SheetController.cs
+++ b/NKC_WF/Controllers/SheetController.cs
@@ -8,6 +8,10 @@ namespace NKC_WF.Controllers
 {
     public class SheetController : ApiController
     {
+        /// <summary>
+        /// COdice macchina (HARD CODED)
+        /// </summary>
+        protected string machine = "WRK001";
         /// <summary>
         /// Restituisce un array di sheet da lavorare (quindi NON ancora scaricati, anche di + BUNK)
         /// GET: api/Sheet
@@ -95,7 +99,7 @@ namespace NKC_WF.Controllers
                                 if (currSheet.Machining.DtEnd != null)
                                 {
                                     // hard coded su multiax
-                                    DataLayer.man.taIL.updateSheetStatus(currSheet.SheetId, 1, "WRK001");
+                                    DataLayer.man.taIL.updateSheetStatus(currSheet.SheetId, 1, machine);
                                 }
                             }
                             // segnalo avanzamento su redis x pagina unload
@@ -113,7 +117,7 @@ namespace NKC_WF.Controllers
                 // ricalcolo stato BUNK
                 ComLib.updateBatchPosition(BatchId);
                 // INVALIDO eventuale valore BUNK in REDIS...
-                ComLib.resetRedisBunkData();
+                ComLib.resetRedisBunkData(machine);
             }
         }
 
@@ -175,6 +179,8 @@ namespace NKC_WF.Controllers
                     }
                     // ricalcolo stato BUNK
                     ComLib.updateBatchPosition(BatchId);
+                    // INVALIDO eventuale valore BUNK in REDIS...
+                    ComLib.resetRedisBunkData(machine);
                 }
             }
             catch
diff --git a/NKC_WF/WebUserControls/cmp_secScreen.ascx.cs b/NKC_WF/WebUserControls/cmp_secScreen.ascx.cs
index e3dfdcd..8ccc0ad 100644
--- a/NKC_WF/WebUserControls/cmp_secScreen.ascx.cs
+++ b/NKC_WF/WebUserControls/cmp_secScreen.ascx.cs
@@ -17,6 +17,11 @@ namespace NKC_WF.WebUserControls
     public partial class cmp_secScreen : BaseUserControl
     {
 
+        /// <summary>
+        /// Codice macchina (HARD CODED x ora)
+        /// </summary>
+        protected string machine = "WRK001";
+
         protected void timerRefresh_Tick(object sender, EventArgs e)
         {
             countDown--;
@@ -38,7 +43,7 @@ namespace NKC_WF.WebUserControls
             DS_App.StackListRow currBunk = ComLib.getCurrBunk();
             if (currBunk != null)
             {
-                DS_App.SheetListRow currSheet = ComLib.getCurrSheet(currBunk.BatchID);
+                DS_App.SheetListRow currSheet = ComLib.getCurrSheet(currBunk.BatchID, machine);
                 if (currSheet != null)
                 {
                     // se variato...
diff --git a/NKC_WF/WebUserControls/cmp_stackLoading.ascx.cs b/NKC_WF/WebUserControls/cmp_stackLoading.ascx.cs
index 5bdb762..29d3f25 100644
--- a/NKC_WF/WebUserControls/cmp_stackLoading.ascx.cs
+++ b/NKC_WF/WebUserControls/cmp_stackLoading.ascx.cs
@@ -162,7 +162,8 @@ namespace NKC_WF.WebUserControls
                                     if (currentBunkPrinted)
                                     {
                                         cmp_barcode.showOutput("badge badge-success", $"BUNK OK, {decoData.rawData}");
-                                        ComLib.taktMLCurrStack = decoData.code;
+                                        ComLib.resetCurrBunk();
+                                        ComLib.taktMLCurrBunk = decoData.codeInt.ToString();
                                         // processo DB e salvo che lo stack è stato caricato in MACHINE LOAD
                                         int stackId = 0;
                                         try
diff --git a/NKC_WF/site/DBG_QRCode_Unload.aspx.cs b/NKC_WF/site/DBG_QRCode_Unload.aspx.cs
index 1f97738..8da202f 100644
--- a/NKC_WF/site/DBG_QRCode_Unload.aspx.cs
+++ b/NKC_WF/site/DBG_QRCode_Unload.aspx.cs
@@ -7,6 +7,8 @@ namespace NKC_WF.site
 {
     public partial class DBG_QRCode_Unload : System.Web.UI.Page
     {
+
+        string machine ="WRK001";
         protected void Page_Load(object sender, EventArgs e)
         {
             if (!Page.IsPostBack)
@@ -92,7 +94,7 @@ namespace NKC_WF.site
             if (currBunk != null)
             {
                 BatchId = currBunk.BatchID;
-                DS_App.SheetListRow currSheet = ComLib.getCurrSheet(BatchId);
+                DS_App.SheetListRow currSheet = ComLib.getCurrSheet(BatchId, machine);
                 if (currSheet != null)
                 {
                     SheetId = currSheet.SheetID;
diff --git a/NKC_WF/site/MachineUnload.aspx b/NKC_WF/site/MachineUnload.aspx
index 3f5cd7c..49aa670 100644
--- a/NKC_WF/site/MachineUnload.aspx
+++ b/NKC_WF/site/MachineUnload.aspx
@@ -9,7 +9,11 @@
 <asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
     <div class="mx-0">
         <div class="card text-center" style="width: 100%;">
-            <h4 class="card-header bg-secondary text-light"><%: traduci("MachineUnload") %> <sub>(<%: hfBatchID.Value %>)</sub></h4>
+            <asp:UpdatePanel runat="server" ID="upnlTitle" UpdateMode="Conditional">
+                <ContentTemplate>
+                    <h4 class="card-header bg-secondary text-light"><%: traduci("MachineUnload") %> <sub>(<%: hfBatchID.Value %>)</sub></h4>
+                </ContentTemplate>
+            </asp:UpdatePanel>
             <div class="card-body py-1 bg-dark">
                 <asp:UpdatePanel runat="server" ID="upnlStats" UpdateMode="Conditional">
                     <ContentTemplate>
@@ -36,7 +40,7 @@
                     <div class="col-2 pl-0">
                         <asp:UpdatePanel runat="server" ID="upnlCarts" UpdateMode="Conditional">
                             <ContentTemplate>
-                                <asp:Timer ID="timerSvg" runat="server" Interval="1200" OnTick="timerSvg_Tick"></asp:Timer>
+                                <asp:Timer ID="timerSvg" runat="server" Interval="1100" OnTick="timerSvg_Tick"></asp:Timer>
                                 <uc1:cmp_MU_carts runat="server" ID="cmp_MU_carts" />
                             </ContentTemplate>
                         </asp:UpdatePanel>
diff --git a/NKC_WF/site/MachineUnload.aspx.cs b/NKC_WF/site/MachineUnload.aspx.cs
index b41a4f4..5f514cf 100644
--- a/NKC_WF/site/MachineUnload.aspx.cs
+++ b/NKC_WF/site/MachineUnload.aspx.cs
@@ -30,10 +30,11 @@ namespace NKC_WF
             set
             {
                 hfBatchID.Value = value.ToString();
+                ComLib.setCurrBunkId(machine, value);
             }
             get
             {
-                int answ = 0;
+                int answ = ComLib.getCurrBunkId(machine);
                 int.TryParse(hfBatchID.Value, out answ);
                 return answ;
             }
@@ -46,10 +47,11 @@ namespace NKC_WF
             set
             {
                 hfSheetID.Value = value.ToString();
+                ComLib.setCurrSheetId(machine, value);
             }
             get
             {
-                int answ = 0;
+                int answ = ComLib.getCurrSheetId(machine);
                 int.TryParse(hfSheetID.Value, out answ);
                 return answ;
             }
@@ -61,15 +63,16 @@ namespace NKC_WF
         {
             // imposto dati correnti
             bool doUpdate = setCurrData();
+            // aggiorno child
+            cmp_MU_stats.BatchId = BatchId;
+            cmp_MU_bins.BatchId = BatchId;
+            cmp_MU_carts.BatchId = BatchId;
+            cmp_MU_svgViewer.BatchId = BatchId;
+            cmp_MU_svgViewer.SheetId = SheetId;
             if (doUpdate)
             {
-                // aggiorno child
-                cmp_MU_stats.BatchId = BatchId;
-                cmp_MU_bins.BatchId = BatchId;
-                cmp_MU_carts.BatchId = BatchId;
-                cmp_MU_svgViewer.BatchId = BatchId;
-                cmp_MU_svgViewer.SheetId = SheetId;
                 cmp_MU_svgViewer.doUpdate();
+                upnlTitle.Update();
             }
         }
         /// <summary>
@@ -88,7 +91,7 @@ namespace NKC_WF
                     needUpdate = true;
                 }
 
-                DS_App.SheetListRow currSheet = ComLib.getCurrSheet(BatchId);
+                DS_App.SheetListRow currSheet = ComLib.getCurrSheet(BatchId, machine);
                 if (currSheet != null)
                 {
                     if (SheetId != currSheet.SheetID)
@@ -101,10 +104,12 @@ namespace NKC_WF
             else
             {
                 BatchId = 0;
+                ComLib.setCurrBunkId(machine, 0);
+                ComLib.setCurrSheetId(machine, 0);
                 ComLib.man.resetSheetUnload(0);
             }
             // se sheet/bunk 0 --> update!
-            if (BatchId == 0 && SheetId == 0)
+            if (BatchId <= 0 && SheetId <= 0)
             {
                 needUpdate = true;
             }
@@ -168,9 +173,10 @@ namespace NKC_WF
         /// </summary>
         protected void incrNumWait()
         {
-            if (numWaitSvg > 30)
+            if (numWaitSvg > 20)
             {
                 memLayer.ML.resetRCnt(redProdReq);
+                Response.Redirect(Request.RawUrl);
             }
             memLayer.ML.setRCntI(redProdReq);
         }
diff --git a/NKC_WF/site/MachineUnload.aspx.designer.cs b/NKC_WF/site/MachineUnload.aspx.designer.cs
index be25b73..655bc4e 100644
--- a/NKC_WF/site/MachineUnload.aspx.designer.cs
+++ b/NKC_WF/site/MachineUnload.aspx.designer.cs
@@ -14,6 +14,15 @@ namespace NKC_WF
     public partial class MachineUnload
     {
 
+        /// <summary>
+        /// Controllo upnlTitle.
+        /// </summary>
+        /// <remarks>
+        /// Campo generato automaticamente.
+        /// Per la modifica, spostare la dichiarazione di campo dal file di progettazione al file code-behind.
+        /// </remarks>
+        protected global::System.Web.UI.UpdatePanel upnlTitle;
+
         /// <summary>
         /// Controllo upnlStats.
         /// </summary>