hoseman

I am using the demo ComDriver code as follows: using System; using Unitronics.ComDriver; namespace Com_Drive_Net___Example { class AccessClass { static PLC plc; public static void Test (){ Ethernet eth = new Ethernet ("192.168.1.152", 20256, EthProtocol.TCP, 3, 3000); try{ plc = PLCFactory.GetPLC(eth, 0); plc.EventAbortCompleted+=new PLC.AbortCompletedDelegate(plc_EventAbortCompleted); }catch(Exception e){ eth.Disconnect(); Console.WriteLine ("Error1:"+e.Message+"-->("+e.TargetSite+")"+e.StackTrace+"-->"+e.Source); } try{ Console.WriteLine(plc.Version.OPLCModel); Console.WriteLine (plc.PlcName); Console.WriteLine(eth.Connected); Console.WriteLine(plc.UnitId); }catch(Exception e){ eth.Disconnect(); Console.WriteLine ("Error2:"+e.Message+"-->("+e.TargetSite+")"+e.StackTrace); } Console.Read (); } public static void plc_EventAbortCompleted(){ Console.WriteLine ("dunno"); } } } It is pretty much straight out of the book. I continue to get the following error: Unhandled Exception: Unitronics.ComDriver.ComDriveExceptions: Cannot communicate with the PLC with the specified UnitID! at Unitronics.ComDriver.PLC..ctor (Int32 unitId, Unitronics.ComDriver.Channel channel, Boolean suppressEthernetHeader) [0x00000] in <filename unknown>:0 at Unitronics.ComDriver.PLCFactory.getPLC (Unitronics.ComDriver.Channel& channel, Int32 unitId, System.Boolean& isConnected, Boolean suppressEthernetHeader) [0x00000] in <filename unknown>:0 [ERROR] FATAL UNHANDLED EXCEPTION: Unitronics.ComDriver.ComDriveExceptions: Cannot communicate with the PLC with the specified UnitID! at Unitronics.ComDriver.PLC..ctor (Int32 unitId, Unitronics.ComDriver.Channel channel, Boolean suppressEthernetHeader) [0x00000] in <filename unknown>:0 at Unitronics.ComDriver.PLCFactory.getPLC (Unitronics.ComDriver.Channel& channel, Int32 unitId, System.Boolean& isConnected, Boolean suppressEthernetHeader) [0x00000] in <filename unknown>:0 I have tried three different versions of Unitronics.ComDriver.dll, dated 7/26/15, 7/29/15 and compiled myself yesterday, 3/2/16. Same error on everyone. I am not a C# expert by no means, but I can't see what I might be doing wrong. We set the the PLC to TCP/slave and set its Socket 0 Port to 20256 (mostly in desperation) I'm not sure what to try next? Thanks