diff --git a/Thermo.Active.Database/Controllers/RedisController.cs b/Thermo.Active.Database/Controllers/RedisController.cs
index 74ec5ec5..bb5df791 100644
--- a/Thermo.Active.Database/Controllers/RedisController.cs
+++ b/Thermo.Active.Database/Controllers/RedisController.cs
@@ -36,6 +36,10 @@ namespace Thermo.Active.Database.Controllers
         private const string machineEventKpis = "Events:Kpis";
         private const string machineMessagePath = "Events:Messages";
 
+
+        private const string thermoSemRecipe = "Thermo:Semaphore:Recipe";
+        private const string thermoSemWarmers = "Thermo:Semaphore:Warmers";
+
         public static void WriteProductionNotification(uint ProductionProcess, string Notification)
         {
             string redisHash = redUtil.man.redHash(redisNotificationAddress).Replace("%NN%", ProductionProcess.ToString("00"));
@@ -246,5 +250,89 @@ namespace Thermo.Active.Database.Controllers
             return true;
         }
 
+        /// <summary>
+        /// Imposta semaforo Recipe
+        /// </summary>
+        /// <param name="doLock">true: imposto lock per 5 sec, false: tolgo lock (stringa vuota)</param>
+        /// <returns></returns>
+        public static bool setRecipeReadSem(bool doLock)
+        {
+            return setSemaphore(doLock, redUtil.man.redHash(thermoSemRecipe));
+        }
+
+
+        /// <summary>
+        /// Restituisce semaforo Recipe
+        /// </summary>
+        /// <returns></returns>
+        public static bool getRecipeReadSem
+        {
+            get
+            {
+                return getSemaphore(redUtil.man.redHash(thermoSemRecipe));
+            }
+        }
+        /// <summary>
+        /// Imposta semaforo Warmers
+        /// </summary>
+        /// <param name="doLock">true: imposto lock per 5 sec, false: tolgo lock (stringa vuota)</param>
+        /// <returns></returns>
+        public static bool setWarmersReadSem(bool doLock)
+        {
+            return setSemaphore(doLock, redUtil.man.redHash(thermoSemWarmers));
+        }
+        /// <summary>
+        /// Restituisce semaforo Warmers
+        /// </summary>
+        /// <returns></returns>
+        public static bool getWarmersReadSem
+        {
+            get
+            {
+                return getSemaphore(redUtil.man.redHash(thermoSemWarmers));
+            }
+        }
+
+        /// <summary>
+        /// Gestione generica SET semaforo
+        /// </summary>
+        /// <param name="doLock"></param>
+        /// <param name="redisHash"></param>
+        /// <returns></returns>
+        private static bool setSemaphore(bool doLock, string redisHash)
+        {
+            bool answ = true;
+            int ttlSec = 5;
+            string rawData = $"{DateTime.Now}";
+            try
+            {
+                if (doLock)
+                {
+                    // imposto lock
+                    answ = redUtil.man.setRSV(redisHash, rawData, ttlSec);
+                }
+                else
+                {
+                    // metto empty string a 1 sec
+                    answ = redUtil.man.setRSV(redisHash, "", 1);
+                }
+            }
+            catch
+            { }
+            return answ;
+        }
+        /// <summary>
+        /// Gestione generica GET semafoto
+        /// </summary>
+        /// <param name="redisHash"></param>
+        /// <returns></returns>
+        private static bool getSemaphore(string redisHash)
+        {
+            bool answ = true;
+            string rawData = redUtil.man.getRSV(redisHash);
+            // se non nulla --> ho semaforo!
+            answ = !string.IsNullOrEmpty(rawData);
+            return answ;
+        }
     }
 }