diff --git a/IOB-WIN/DATA/CONF/EM63.ini b/IOB-WIN/DATA/CONF/EM63.ini
index 52254098..78c2e172 100644
--- a/IOB-WIN/DATA/CONF/EM63.ini
+++ b/IOB-WIN/DATA/CONF/EM63.ini
@@ -58,9 +58,11 @@ PZCOUNT_MODE=NONE
 DISABLE_PZCOUNT=TRUE
 ENABLE_DYN_DATA=TRUE
 FORCE_DYN_DATA=TRUE
-;ENABLE_SEND_PZC_BLOCK=TRUE
-;MIN_SEND_PZC_BLOCK=0
-;MAX_SEND_PZC_BLOCK=100
+ENABLE_SEND_PZC_BLOCK=TRUE
+MIN_SEND_PZC_BLOCK=0
+MAX_SEND_PZC_BLOCK=1200
+MAX_DELAY_SEC=15
+CACHE_MULT=8
 ; CONF variabili da recuperare in WebPage (stato macchina, contatori, variabili, ...)
 LUT_CONF=EM63.json
 timerIntMs=10
diff --git a/IOB-WIN/IobFileEurom63.cs b/IOB-WIN/IobFileEurom63.cs
index 541b9f1c..e17ba235 100644
--- a/IOB-WIN/IobFileEurom63.cs
+++ b/IOB-WIN/IobFileEurom63.cs
@@ -27,6 +27,11 @@ namespace IOB_WIN
         /// </summary>
         protected string appPath = Directory.GetCurrentDirectory();
 
+        /// <summary>
+        /// Moltiplicatore durata cache
+        /// </summary>
+        protected int cacheMult = 4;
+
         /// <summary>
         /// Oggetti decodificati da pagina
         /// </summary>
@@ -60,6 +65,12 @@ namespace IOB_WIN
         {
             lgInfo("INIT IobFileEurom63");
             appPath = Path.GetDirectoryName(Application.ExecutablePath);
+
+            string MAX_DELAY_SEC = getOptPar("MAX_DELAY_SEC");
+            string CACHE_MULT = getOptPar("CACHE_MULT");
+            int.TryParse(MAX_DELAY_SEC, out maxDelaySec);
+            int.TryParse(CACHE_MULT, out cacheMult);
+
 #if DEBUG
             maxDelaySec = 60 * 60 * 24;
 #endif
@@ -87,6 +98,7 @@ namespace IOB_WIN
                     // imposto livellotornando indietro di 1 alla volta... senza andare in negativoS
                     actLevel = actLevel - 1;
                     actLevel = actLevel > 0 ? actLevel : 0;
+                    lgInfo($"Sessione inattiva, {actLevel + 1} --> {actLevel}");
                 }
             }
         }
@@ -699,7 +711,7 @@ namespace IOB_WIN
                                             }
                                             // salvo in cache!
                                             Last_CurrStatus.Value = currStatus;
-                                            Last_CurrStatus.ValidUntil = DateTime.Now.AddSeconds(maxDelaySec * 4);
+                                            Last_CurrStatus.ValidUntil = DateTime.Now.AddSeconds(maxDelaySec * cacheMult);
 
                                             // ora verifico SE siano validi anche le dataora dei valori letti (< 20 sec ritardo da ora...)
                                             string data = statusData[0].Trim();
@@ -775,7 +787,7 @@ namespace IOB_WIN
                     }
                     // salvo B_Input in cache!
                     Last_B_Input.Value = B_input;
-                    Last_B_Input.ValidUntil = DateTime.Now.AddSeconds(maxDelaySec * 4);
+                    Last_B_Input.ValidUntil = DateTime.Now.AddSeconds(maxDelaySec * cacheMult);
                 }
                 // se disponibile riporto B_Input precedente
                 else