using HslCommunication.Profinet.Siemens; namespace TestProject1 { [TestClass] public class UnitTest1 { [TestMethod] public void TestMethod1() { SiemensS7Net plc_Conv = new SiemensS7Net(SiemensPLCS.S1500, "127.0.0.1"); plc_Conv.ConnectTimeOut = 3; OperateResult res = plc_Conv.ConnectServer(); if (res.IsSuccess) { Console.WriteLine(1); } else { Console.WriteLine(2); } Console.ReadKey(); } } }