C# Telnet into PLC-Motion Controller

Question

Hi- I'd appreciate some advice related to C# Coding of a Telnet Session to a Motion Controller. The Motion Controller allows for a Telnet connection, however these devices give priority to other tasks (namely controlling motor position, velocity, etc.) ahead of servicing Communications. It also requires a login with password. I have the code generated, and working when I step thru it in the debugger. However, when it runs full throttle, it never gets thru the login process. Are there settings in my C# Code that can "dumb it down" or open it up to be more forgiving?? Here is the test code--- public void StartClient() { // data buffer byte[] bytes = new byte[1024]; try { // Connect setup... IPAddress ipA = IPAddress.Parse("192.168.2.18"); IPEndPoint remoteEP = new IPEndPoint(ipA, 23); Socket sender = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); // Connect... try { // sender.Blocking = true; // sender.ReceiveTimeout.Equals(2000); sender.Connect(remoteEP); Console.WriteLine("Socket Connection... {0}", sender.RemoteEndPoint.ToString()); // Start Login Process... do { bytesRec = sender.Receive(bytes); s = Encoding.ASCII.GetString(bytes, 0, bytesRec); } while (!s.Contains("Login: ")); connection += s; s = null; // encode & send login msg... msg = Encoding.ASCII.GetBytes("admin\r"); bytesSent = sender.Send(msg); // connection += ("admin\r"); msg = null; do { bytesRec = sender.Receive(bytes); s = Encoding.ASCII.GetString(bytes, 0, bytesRec); } while (!s.Contains("Password: ")); connection += s; s = null; // encode & send msg... msg = Encoding.ASCII.GetBytes("BlueFusion\r"); bytesSent = sender.Send(msg); // connection += ("BlueFusion\r"); // receive and process response... bytesRec = sender.Receive(bytes); s = Encoding.ASCII.GetString(bytes, 0, bytesRec); connection += s; s = null; // Send Data Request for Registers 500-525... msg = Encoding.ASCII.GetBytes("500-525\r"); bytesSent = sender.Send(msg); // receive and process response... bytesRec = sender.Receive(bytes); s = Encoding.ASCII.GetString(bytes, 0, bytesRec); connection += s; s = null; // release socket connection... sender.Shutdown(SocketShutdown.Both); sender.Close(); richTextBox1.AppendText(connection); } catch (ArgumentNullException ane) { richTextBox1.AppendText(ane.ToString()); } catch (SocketException se) { richTextBox1.AppendText(se.ToString()); } catch (Exception e) { richTextBox1.AppendText(e.ToString()); } } catch (Exception e) { richTextBox1.AppendText(e.ToString()); } } Thanks in advance... Lee Clore Onyx Industries Makers of Industrial Signal Systems