14.03.2016 12:11:47,System.NullReferenceException: Object reference not set to an instance of an object.
   at TCPDeviceTester.TCPConnection.set_CommunicationTimeOut(Int32 value) in E:\__DropboxWorks\Dropbox\C#.NET\C# Projects\DeviceTester\DeviceTester\App_Code\TCPConnection.cs:line 30
   at TCPDeviceTester.frmMain.SendBytesToDevice(Byte[] bytesToSend) in E:\__DropboxWorks\Dropbox\C#.NET\C# Projects\DeviceTester\DeviceTester\frmMainSenderMethods.cs:line 45
14.03.2016 12:41:50,02 05 01 00 01 55 2E 49,Get Status,06 05 01 00 03 55 39 A0 B2 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
14.03.2016 12:56:38,,06 05 01 00 03 55 3C A0 CC A2 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
14.03.2016 14:43:34,02 05 01 00 01 50 79 E4,Select System A,06 05 01 00 01 50 69 48 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
