diff --git a/MTC_Adapter/MTC_Adapter/AdapterOsai.cs b/MTC_Adapter/MTC_Adapter/AdapterOsai.cs
index 12a690f..d423d77 100644
--- a/MTC_Adapter/MTC_Adapter/AdapterOsai.cs
+++ b/MTC_Adapter/MTC_Adapter/AdapterOsai.cs
@@ -1109,10 +1109,10 @@ namespace MTC_Adapter
         private void getMtzDataFromPlc()
         {
             // recupero i dati di manutenzione dall'area di memoria IN BLOCCO
-            int memIndex = 19166;
+            int memIndex = 1000;
             uint[] tabDatiMtz = new uint[maintData.Length];
             inizio = DateTime.Now;
-            OsaiMemRW_DWord(R, OSAI.MemTypeWord.MW_CODE, memIndex, ref tabDatiMtz);
+            OsaiMemRW_DWord(R, OSAI.MemTypeWord.GW_CODE, memIndex, ref tabDatiMtz);
             if (utils.CRB("recTime")) TimingData.addResult(string.Format("R{0}-DatiMtz", tabDatiMtz.Length * 4), DateTime.Now.Subtract(inizio).Ticks);
             // decodifico aree memoria secondo tab configurazione
             processMaintData(tabDatiMtz, maintData);