diff --git a/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs b/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs
index f303d3834..653ff95d4 100644
--- a/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs
@@ -3,6 +3,7 @@
 /// Author: Milan Hanajík
 ///
 using System;
+using System.IO.Ports;
 using System.Collections.Generic;
 using log4net;
 using TBF.BenchControl;
@@ -35,6 +36,27 @@ namespace TBF.BenchControl.TestMethods.iPerlCommunication
 
         public void Initialize()
         {
+			if (DebugLevel == Entities.DebugMode.Normal)
+			{
+				/// Check whether RFID serial ports are free
+				SerialPort rfidPort;
+				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard1), 9600, Parity.None, 8, StopBits.One);
+				rfidPort.Open();
+				rfidPort.Close();
+
+				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard2), 9600, Parity.None, 8, StopBits.One);
+				rfidPort.Open();
+				rfidPort.Close();
+
+				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard3), 9600, Parity.None, 8, StopBits.One);
+				rfidPort.Open();
+				rfidPort.Close();
+
+				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard4), 9600, Parity.None, 8, StopBits.One);
+				rfidPort.Open();
+				rfidPort.Close();
+			}
+			
  			Version ver = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
             rfidDataLogger.Fatal("------------------------------------------------------------------------");
             rfidDataLogger.FatalFormat("Test Bench Framework  ver. {0}.{1}.{2}", ver.Major, ver.Minor, ver.Build);
diff --git a/TestBenchFramework/Properties/AssemblyInfo.cs b/TestBenchFramework/Properties/AssemblyInfo.cs
index 62d67ebf9..ecc69c56a 100644
--- a/TestBenchFramework/Properties/AssemblyInfo.cs
+++ b/TestBenchFramework/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("1.5.103.1")]
-[assembly: AssemblyFileVersion("1.5.103.1")]
+[assembly: AssemblyVersion("1.5.105.1")]
+[assembly: AssemblyFileVersion("1.5.105.1")]