diff --git a/Test-S7/NLog.config b/Test-S7/NLog.config
index a55caaa4..ba967607 100644
--- a/Test-S7/NLog.config
+++ b/Test-S7/NLog.config
@@ -5,22 +5,19 @@
       autoReload="true"
       throwExceptions="false"
       internalLogLevel="Off" internalLogFile="c:\temp\nlog-internal.log">
-
-  <!-- optional, add some variables
-  https://github.com/nlog/NLog/wiki/Configuration-file#variables
-  -->
   <variable name="myvar" value="myvalue"/>
-
-  <!--
-  See https://github.com/nlog/nlog/wiki/Configuration-file
-  for information on customizing logging rules and outputs.
-   -->
+  <!--fileName="${basedir}/logs/${shortdate}.log"-->
+  <!--fileName="${basedir}/logs/logfile.txt"-->
   <targets>
-
     <target xsi:type="File"
             name="f"
-            fileName="${basedir}/logs/${shortdate}.log"
             layout="${longdate} ${uppercase:${level}} ${message}"
+            fileName="${basedir}/logs/${shortdate}.log"
+            archiveFileName="${basedir}/logs/archives/${shortdate}.zip"
+            archiveEvery="Minute"
+            archiveNumbering="Rolling"
+            maxArchiveFiles="365"
+            enableArchiveFileCompression="true"
             />
   </targets>
 
diff --git a/Test-S7/TestMainForm.Designer.cs b/Test-S7/TestMainForm.Designer.cs
index 2cbcea44..afeeb793 100644
--- a/Test-S7/TestMainForm.Designer.cs
+++ b/Test-S7/TestMainForm.Designer.cs
@@ -157,7 +157,7 @@
       this.groupBox1.Controls.Add(this.txtMemSize);
       this.groupBox1.Controls.Add(this.label3);
       this.groupBox1.Controls.Add(this.label2);
-      this.groupBox1.Location = new System.Drawing.Point(466, 12);
+      this.groupBox1.Location = new System.Drawing.Point(468, 12);
       this.groupBox1.Name = "groupBox1";
       this.groupBox1.Size = new System.Drawing.Size(386, 105);
       this.groupBox1.TabIndex = 8;
@@ -193,9 +193,9 @@
             | System.Windows.Forms.AnchorStyles.Right)));
       this.groupBox2.AutoSize = true;
       this.groupBox2.Controls.Add(this.txtOut);
-      this.groupBox2.Location = new System.Drawing.Point(12, 185);
+      this.groupBox2.Location = new System.Drawing.Point(12, 189);
       this.groupBox2.Name = "groupBox2";
-      this.groupBox2.Size = new System.Drawing.Size(843, 624);
+      this.groupBox2.Size = new System.Drawing.Size(842, 402);
       this.groupBox2.TabIndex = 9;
       this.groupBox2.TabStop = false;
       this.groupBox2.Text = "Risultati";
@@ -209,7 +209,7 @@
       this.txtOut.Multiline = true;
       this.txtOut.Name = "txtOut";
       this.txtOut.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
-      this.txtOut.Size = new System.Drawing.Size(837, 603);
+      this.txtOut.Size = new System.Drawing.Size(836, 381);
       this.txtOut.TabIndex = 0;
       this.txtOut.Text = "...";
       // 
@@ -295,9 +295,9 @@
             this.toolStripStatusLabel1,
             this.toolStripProgressBar1,
             this.tslRTime});
-      this.statusStrip1.Location = new System.Drawing.Point(0, 812);
+      this.statusStrip1.Location = new System.Drawing.Point(0, 599);
       this.statusStrip1.Name = "statusStrip1";
-      this.statusStrip1.Size = new System.Drawing.Size(867, 25);
+      this.statusStrip1.Size = new System.Drawing.Size(869, 25);
       this.statusStrip1.TabIndex = 11;
       this.statusStrip1.Text = "statusStrip1";
       // 
@@ -326,6 +326,8 @@
       // 
       // groupBox4
       // 
+      this.groupBox4.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
       this.groupBox4.Controls.Add(this.btnStrWrite);
       this.groupBox4.Controls.Add(this.btnNumWrite);
       this.groupBox4.Controls.Add(this.txtWriteVal2);
@@ -338,7 +340,7 @@
       this.groupBox4.Controls.Add(this.label7);
       this.groupBox4.Location = new System.Drawing.Point(12, 117);
       this.groupBox4.Name = "groupBox4";
-      this.groupBox4.Size = new System.Drawing.Size(840, 71);
+      this.groupBox4.Size = new System.Drawing.Size(842, 71);
       this.groupBox4.TabIndex = 12;
       this.groupBox4.TabStop = false;
       this.groupBox4.Text = "Memoria: WRITE param";
@@ -439,7 +441,7 @@
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-      this.ClientSize = new System.Drawing.Size(867, 837);
+      this.ClientSize = new System.Drawing.Size(869, 624);
       this.Controls.Add(this.groupBox4);
       this.Controls.Add(this.statusStrip1);
       this.Controls.Add(this.groupBox3);
diff --git a/Test-S7/TestMainForm.cs b/Test-S7/TestMainForm.cs
index 71d995a6..6b62a468 100644
--- a/Test-S7/TestMainForm.cs
+++ b/Test-S7/TestMainForm.cs
@@ -17,10 +17,6 @@ namespace Test_S7
 {
   public partial class TestMainForm : Form
   {
-    /// <summary>
-    /// Ogetto plc impiegato...
-    /// </summary>
-    protected Plc currPLC;
     /// <summary>
     /// Oggetto cronometro x test vari...
     /// </summary>
@@ -29,7 +25,14 @@ namespace Test_S7
     /// parametri di connessione
     /// </summary>
     protected connParam parametri;
-
+    /// <summary>
+    /// titolo x log/debug
+    /// </summary>
+    protected string titolo = "";
+    /// <summary>
+    /// contenuto x log/debug
+    /// </summary>
+    protected string contenuto = "";
     /// <summary>
     /// oggetto logging
     /// </summary>
@@ -62,36 +65,33 @@ namespace Test_S7
     /// </summary>
     private void setParamPlc()
     {
+      txtOut.Text = "";
       try
       {
         short.TryParse(txtSlot.Text, out parametri.slot);
         short.TryParse(txtRack.Text, out parametri.rack);
         parametri.tipoCpu = (CpuType)Enum.Parse(typeof(CpuType), cbCpuType.SelectedItem.ToString());
         parametri.ipAdrr = txtIP.Text.Trim();
+        titolo = "PARAM PLC";
+        contenuto = string.Format("IP: {0}{1}", parametri.ipAdrr, Environment.NewLine);
+        contenuto += string.Format("CPU: {0}{1}", parametri.tipoCpu, Environment.NewLine);
+        contenuto += string.Format("RACK: {0}{1}", parametri.rack, Environment.NewLine);
+        contenuto += string.Format("SLOT: {0}", parametri.slot, Environment.NewLine);
+        showOut(titolo, contenuto);
       }
       catch (Exception exc)
       {
         lg.Error(exc, "Errore in parse parametri");
       }
-      if (parametri.ipAdrr != "" && parametri.rack >= 0 && parametri.slot >= 0)
-      {
-        // inizializzo il PLC...
-        currPLC = new Plc(parametri.tipoCpu, parametri.ipAdrr, parametri.rack, parametri.slot);
-      }
     }
 
     private void eseguiLettura()
     {
       //Stopwatch sw = new Stopwatch();
-      sw.Start();
+      sw.Restart();
       // inizializzo
-      string titolo = "";
-      string contenuto = "";
-      txtOut.Text = "";
       //if (parametri.ipAdrr != "" && parametri.rack >= 0 && parametri.slot >= 0)
       //{
-      //  using (var plc = new Plc(tipoCpu, txtIP.Text, rack, slot))
-      //  {
       // test ping!!!
       Ping pingSender = new Ping();
       IPAddress address = IPAddress.Loopback;
@@ -106,64 +106,57 @@ namespace Test_S7
       }
       else
       {
-        currPLC.Open();
-        if (!currPLC.IsAvailable)
+        using (var plc = new Plc(parametri.tipoCpu, parametri.ipAdrr, parametri.rack, parametri.slot))
         {
-          titolo = "Errore Disponibilità";
-          contenuto = string.Format("{0} | {1}", currPLC.LastErrorCode, currPLC.LastErrorString);
-          currPLC.ClearLastError();
-          showOut(titolo, contenuto);
-        }
-        else
-        {
-          if (!currPLC.IsConnected)
+          //plc.ClearLastError();
+          plc.Open();
+          if (!plc.IsAvailable)
           {
-            titolo = "Errore connessione";
-            contenuto = string.Format("{0} | {1}", currPLC.LastErrorCode, currPLC.LastErrorString);
-            currPLC.ClearLastError();
+
+            titolo = "Errore Disponibilità";
+            contenuto = string.Format("{0} | {1}", plc.LastErrorCode, plc.LastErrorString);
+            plc.ClearLastError();
             showOut(titolo, contenuto);
-            tslConn.Text = "NO Connection";
           }
           else
           {
-            tslConn.Text = "Connection OK";
-            // inizio riportando dati connessione...
-            titolo = "CONNESSIONE AVVENUTA";
-            contenuto = string.Format("IP: {0}{1}", address, Environment.NewLine);
-            contenuto += string.Format("CPU: {0}{1}", parametri.tipoCpu, Environment.NewLine);
-            contenuto += string.Format("RACK: {0}{1}", parametri.rack, Environment.NewLine);
-            contenuto += string.Format("SLOT: {0}{1}", parametri.slot, Environment.NewLine);
-            showOut(titolo, contenuto);
-            // decodifico memoria...
-            memAddress memoria = new memAddress(txtMemArea.Text);
-            int numByte = 1;
-            int.TryParse(txtMemSize.Text, out numByte);
-            // se sono + di 200 byte leggo 200 alla volta...
-            int startAddr = 0;
-            int memSize = 0;
-            if (numByte > 200)
+            if (!plc.IsConnected)
             {
-              while (startAddr + memSize < numByte)
+              titolo = "Errore connessione";
+              contenuto = string.Format("{0} | {1}", plc.LastErrorCode, plc.LastErrorString);
+              plc.ClearLastError();
+              showOut(titolo, contenuto);
+              tslConn.Text = "NO Connection";
+            }
+            else
+            {
+              tslConn.Text = "Connection OK";
+              // inizio riportando dati connessione...
+              titolo = "CONNESSIONE AVVENUTA";
+              contenuto = string.Format("IP: {0}{1}", parametri.ipAdrr, Environment.NewLine);
+              contenuto += string.Format("CPU: {0}{1}", parametri.tipoCpu, Environment.NewLine);
+              contenuto += string.Format("RACK: {0}{1}", parametri.rack, Environment.NewLine);
+              contenuto += string.Format("SLOT: {0}", parametri.slot, Environment.NewLine);
+              showOut(titolo, contenuto);
+              // decodifico memoria...
+              memAddress memoria = new memAddress(txtMemArea.Text);
+              int numByte = 1;
+              int.TryParse(txtMemSize.Text, out numByte);
+              Byte[] memByteRead = plc.ReadBytes(DataType.DataBlock, memoria.DbNum, memoria.indiceMem, numByte);
+              titolo = string.Format("READ BLOCK MEM: {0} --> {1} byte", txtMemArea.Text, numByte);
+              contenuto = "";
+              string byteVal = "";
+              for (int i = 0; i < memByteRead.Length; i++)
               {
-
+                byteVal = Convert.ToString(memByteRead[i], 2).PadLeft(8, '0');
+                contenuto += string.Format("B{0:000}: {1} | {2}{3}", i, byteVal, memByteRead[i], Environment.NewLine);
               }
+              showOut(titolo, contenuto);
             }
-            Byte[] memByteRead = currPLC.ReadBytes(DataType.DataBlock, memoria.DbNum, memoria.indiceMem, numByte);
-            titolo = string.Format("READ BLOCK MEM: {0} --> {1} byte", txtMemArea.Text, numByte);
-            contenuto = "";
-            string byteVal = "";
-            for (int i = 0; i < memByteRead.Length; i++)
-            {
-              byteVal = Convert.ToString(memByteRead[i], 2).PadLeft(8, '0');
-              contenuto += string.Format("B{0:000}: {1} | {2}{3}", i, byteVal, memByteRead[i], Environment.NewLine);
-            }
-            showOut(titolo, contenuto);
           }
+          plc.Close();
         }
-        currPLC.Close();
       }
-      //  }
-      //}
       sw.Stop();
       tslRTime.Text = string.Format("{0}", sw.Elapsed);
     }