diff --git a/CMS_CORE_Library/NcThermo.cs b/CMS_CORE_Library/NcThermo.cs
index 1d486f0..2354e4a 100644
--- a/CMS_CORE_Library/NcThermo.cs
+++ b/CMS_CORE_Library/NcThermo.cs
@@ -636,9 +636,11 @@ namespace CMS_CORE_Library
         /// <summary>
         /// Write recipe updated MULTIPLE parameter
         /// </summary>
-        /// <param name="updtParam"></param>
+        /// <param name="newParameters">Oggetto parametri da aggiornare (from HMI)</param>
+        /// <param name="nMaxParamWrite">num max parametri da scrivere singolarmente</param>
+        /// <param name="delayParamWrite">delay in scriottura multi parametri singoli</param>
         /// <returns></returns>
-        public abstract CmsError PLC_WRecipeParameters(Dictionary<int, int> newParameters);
+        public abstract CmsError PLC_WRecipeParameters(Dictionary<int, int> newParameters, int nMaxParamWrite, int delayParamWrite);
         /// <summary>
         /// Confirm/Cancel recipe modifications
         /// </summary>
diff --git a/CMS_CORE_Library/S7Net/Nc_S7Net.cs b/CMS_CORE_Library/S7Net/Nc_S7Net.cs
index cfec263..bd4aee4 100644
--- a/CMS_CORE_Library/S7Net/Nc_S7Net.cs
+++ b/CMS_CORE_Library/S7Net/Nc_S7Net.cs
@@ -2098,9 +2098,11 @@ namespace CMS_CORE_Library.S7Net
         /// <summary>
         /// Write recipe updated MULTIPLE parameter
         /// </summary>
-        /// <param name="updtParam"></param>
+        /// <param name="newParameters">Oggetto parametri da aggiornare (from HMI)</param>
+        /// <param name="nMaxParamWrite">num max parametri da scrivere singolarmente</param>
+        /// <param name="delayParamWrite">delay in scriottura multi parametri singoli</param>
         /// <returns></returns>
-        public override CmsError PLC_WRecipeParameters(Dictionary<int, int> newParameters)
+        public override CmsError PLC_WRecipeParameters(Dictionary<int, int> newParameters, int nMaxParamWrite, int delayParamWrite)
         {
             // init variabili accessorie
             CmsError libraryError = NO_ERROR;
@@ -2108,9 +2110,9 @@ namespace CMS_CORE_Library.S7Net
             int memIndex = 0;
             int packSize = 20;
 
-            // 2020.08.07
-            // limite a 5 parametri x scrivere tutto (era 30)
-            bool writeSingle = newParameters.Count < 5;
+
+            // 2020.09.03: ricevuto da chiamata, dovrebbe essere 5 parametri x scrivere tutto (era 30 prima di 2008.08.07)
+            bool writeSingle = newParameters.Count < nMaxParamWrite;
 
             // leggo da PLC a array di byte di appoggio...
             libraryError = MEM_RWByteList(R, 0, PARAMETER_DATA.MemType, PARAMETER_DATA.Address, PARAMETER_DATA.SubAddress, 0, PARAMETER_DATA.Size, ref currMem);
@@ -2143,6 +2145,8 @@ namespace CMS_CORE_Library.S7Net
                             libraryError = MEM_RWByteList(W, 0, PARAMETER_DATA.MemType, PARAMETER_DATA.Address, PARAMETER_DATA.SubAddress + packSize * (currParam.Id - 1) + 2, 0, 4, ref newMem);
                             if (libraryError.IsError())
                                 return libraryError;
+                            // attendo x sicurezza...
+                            Thread.Sleep(delayParamWrite);
                         }
                         else
                         {