C#通过OPCUA链接WinCC（C#作为客户端《应用篇》）

调式结果

C#将OPCUA数据接口封装成类源码、智能控制算法源码、WinCC项目等完整项目源码：
https://download.csdn.net/download/weixin_37928884/53250225

主函数调用，其余类函数由于过多，这里不在给出，前往上述网址进行下载。

//方向：一级二级交叉应用
//功能：控制台、OpcUa读写操作
//说明：step7 v5.4本身不支持OpcUa功能、需要Scout.V10搭建OpcUa平台、连接至WinCC.V5.5

using System;
using System.Collections;
using System.Collections.Generic;
using Opc.Ua.UaHelper;
using Opc.Ua.Client;
using Opc.Ua;
using System.Threading.Tasks;
using System.Timers;
using System.Threading;


namespace YangZheng_OpcUa
{
    public struct Postn
    {
        public double Set_T; //设定值
        public double Now_T; //当前值
        public double Lst_T; //前一刻的值
    };

    public struct Flows  //流量结构体
    {
        public double Air;
        public double Gas;
    };

    public struct Error//误差结构体
    {
        public double E;//误差
        public double Lst_E;//前一刻的误差
        public double EC;//误差的变化量
    };

    public struct Times
    {
        public int    Run_Stag;
        public double Air_Gas;
        public double All_Time, Now_Time, Scn_Time;
        public double Air_incr;
        public double Gas_incr;
        public double Rst_Time;
    };


    /*------------------------------------------------------------------------------------------------------------------------*/
    class Program
    {
        static void Main(string[] args)
        {
            //WINCC端口号：4862  KEPWARE端口号：49321
            OpcUaClient client = new OpcUaClient();
            client.Connect("opc.tcp://127.0.0.1:4862");
            //client.Connect("opc.tcp://127.0.0.1:49320");

            /*-----------初始化结构体参数--------*/
            Postn Head,Tail;
            Error E_head, E_tail;
            Times T_para;

            T_para.Run_Stag = 1;
            T_para.Air_Gas = 0.50;
            T_para.All_Time = 3600.0; T_para.Now_Time = 0.0; T_para.Scn_Time = 3.0; T_para.Rst_Time = 0.0;
            T_para.Air_incr = 0.0; T_para.Gas_incr = 0.0;
            

            Head.Now_T = 0; Head.Lst_T = 0; Head.Set_T = 1300.00;
            Tail.Now_T = 0; Tail.Lst_T = 0; Tail.Set_T = 380.00;
            E_head.Lst_E = 0; E_head.E = 0; E_head.EC = 0;
            E_tail.Lst_E = 0; E_tail.E = 0; E_tail.EC = 0;

            FuzzyClass fuzzy = new FuzzyClass();
            fuzzy.Fuzzy_init();
            while (true)
            {
                Console.WriteLine("");
                Console.WriteLine(">>>>>>>>>>>>>>>>>>>>>>>>多读<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
                var retValues = client.ReadNodes(new List { "ns=1;s=t|xx", "ns=1;s=t|oo" });//{"value1", "value2" , "value3" , "value4" , .... }//连接 WinCC
                //var retValues = client.ReadNodes(new List { "ns=2;s=King.Win7.xx", "ns=2;s=King.Win7.oo" });//{"value1", "value2" , "value3" , "value4" , .... }//连接 Kepware
            
                //retValues.ForEach(x => Console.WriteLine(x));

                Tail.Now_T = Convert.ToDouble(retValues[0]);//
                Head.Now_T = Convert.ToDouble(retValues[1]);//

                Console.WriteLine("______________________烟温当前值_______________________");
                Console.WriteLine("—{0}—", Tail.Now_T);
                Console.WriteLine("______________________顶温当前值_______________________");
                Console.WriteLine("—{0}—", Head.Now_T);

                double ext_v = (Tail.Set_T - Tail.Now_T) / (T_para.All_Time - T_para.Now_Time);
                Console.WriteLine("_________________烟温上升速率理想值____________________");
                Console.WriteLine("—{0}—", ext_v);

                Console.WriteLine("_________________烟温上升速率实际值____________________");
                double now_v = (Tail.Now_T - Tail.Lst_T) / T_para.Scn_Time;
                Console.WriteLine("—{0}—", now_v);

                E_tail.E = now_v - ext_v;
                E_tail.EC = E_tail.E - E_tail.Lst_E;
                E_head.E = Head.Now_T - Head.Set_T;
                E_head.EC = E_head.E - E_head.Lst_E;
                
                Console.WriteLine("____________________顶温误差值_________________________");
                Console.WriteLine("—{0}—", E_head.E);
                Console.WriteLine("__________________顶温误差变化值_______________________");
                Console.WriteLine("—{0}—", E_head.EC);

                Console.WriteLine("____________________烟温误差值_________________________");
                Console.WriteLine("—{0}—", E_tail.E);
                Console.WriteLine("__________________烟温误差变化值_______________________");
                Console.WriteLine("—{0}—", E_tail.EC);

                if (T_para.Run_Stag == 1 && T_para.Now_Time > 0)
                {
                    T_para.Run_Stag = 2;
                }

                if (T_para.Run_Stag == 2 && Head.Now_T >= 1270)
                {
                    T_para.Run_Stag = 3;
                }

                if (T_para.Run_Stag == 3 && (Head.Now_T >= 1290 && Head.Now_T < 1310))
                {
                    T_para.Run_Stag = 4;
                }

                if (T_para.Run_Stag == 4 && Tail.Now_T >= 370)
                {
                    T_para.Run_Stag = 5;
                }

                if (Head.Now_T < 1270 && Tail.Now_T < 370)
                {
                    T_para.Run_Stag = 1;
                }
                
                Console.WriteLine("_____________________工作模式号________________________");
                Console.WriteLine("—{0}—", T_para.Run_Stag);


                switch (T_para.Run_Stag)
                {
                    case 1://点火阶段
                        //固定风燃比例
                        T_para.Air_incr = 0;
                        T_para.Gas_incr = T_para.Air_incr / T_para.Air_Gas;
                        
                        Console.WriteLine("______________________点火阶段_________________________");
                        Console.WriteLine("—{0}—", T_para.Air_incr);
                        break;
                    case 2://快速升温阶段
                        //固定风燃比例
                        T_para.Air_incr = 80;
                        T_para.Gas_incr = T_para.Air_incr / T_para.Air_Gas;
                        
                        Console.WriteLine("______________________升温阶段_________________________");
                        Console.WriteLine("—{0}—", T_para.Air_incr);
                        break;
                    case 3://顶温恒定阶段 空燃比寻优
                        T_para.Air_incr = fuzzy.gdwd_fuzzy_control(E_head.E, E_head.EC);
                        T_para.Scn_Time = 5;
                        T_para.Gas_incr = T_para.Air_incr / T_para.Air_Gas;
                        Console.WriteLine("________________顶温恒定阶段 空燃比寻优________________");
                        Console.WriteLine("—{0}—", T_para.Air_incr);
                        break;
                    case 4://烟温增长阶段 空燃比寻优
                        T_para.Air_incr = fuzzy.yqwd_fuzzy_control(E_tail.E, E_tail.EC);
                        T_para.Scn_Time = 7;
                        T_para.Gas_incr = T_para.Air_incr / T_para.Air_Gas;
                        Console.WriteLine("________________烟温增长阶段 空燃比寻优________________");
                        Console.WriteLine("—{0}—", T_para.Air_incr);
                        break;
                    case 5://燃烧结束
                        T_para.Air_incr = 0;
                        T_para.Now_Time = 0;
                        T_para.Gas_incr = T_para.Air_incr / T_para.Air_Gas;
                        Console.WriteLine("______________________燃烧结束_________________________");
                        Console.WriteLine("—{0}—", T_para.Air_incr);
                        break;
                }

                T_para.Now_Time = T_para.Now_Time + T_para.Scn_Time;
                T_para.Rst_Time = T_para.All_Time - T_para.Now_Time;


                Head.Lst_T = Head.Now_T;
                Tail.Lst_T = Tail.Now_T;

                E_tail.Lst_E = E_tail.E;
                E_head.Lst_E = E_head.E;
         
                /*------------------------------------------------------------------------------------------------------------------------*/

                String A = Convert.ToString(T_para.Air_incr);//
                String B = Convert.ToString(T_para.Gas_incr);//

                Console.WriteLine(""); 
                Console.WriteLine(">>>>>>>>>>>>>>>>>>>>>>>>多写<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
                client.WriteNodes(new List { "ns=1;s=t|xx_out", "ns=1;s=t|oo_out" }, new List { A, B });//{"value1", "value2" , "value3" , "value4" , .... }, new List { A, B , C, D,...}//连接 WinCC
                //client.WriteNodes(new List { "ns=2;s=King.Win7.xx_out", "ns=2;s=King.Win7.oo_out" }, new List { E, F });//{"value1", "value2" , "value3" , "value4" , .... }, new List { A, B , C, D,...}//连接 Kepware
             
                Console.WriteLine("____________________空气开度输出_______________________");
                Console.WriteLine("—{0}—", A);
                Console.WriteLine("____________________煤气开度输出_______________________");
                Console.WriteLine("—{0}—", B);
                Thread.Sleep(Convert.ToInt32(T_para.Scn_Time)*1000);
            }
        }
    }
}

C#连接WinCC的地址怎么获取？

有一个简单的方法；想要获取C#（OPCUA）连接WinCC的地址（假设不知道以下四个地址ns=1;s=t|xx、ns=1;s=t|oo、ns=1;s=t|xx_out、ns=1;s=t|oo_out）。
可以通过Kepware以OPCUA通信协议连接WinCC，具体步骤如下：
注意：没有出现的截图均默认下一步，如果提示证书信任选择信任即可…

端口号更改为WinCC的端口号4862、安全策略和消息模式选择无。

观察地址：ns=1;s=t|xx、ns=1;s=t|oo、ns=1;s=t|xx_out、ns=1;s=t|oo_out，将地址输入C#中。

C#连接Kepware的地址怎么获取？

有一个简单的方法；想要获取C#（OPCUA）连接Kepware的地址（假设不知道以下四个地址ns=2;s=King.Win7.xx、ns=2;s=King.Win7.oo、ns=2;s=King.Win7.xx_out、ns=2;s=King.Win7.oo_out）。
可以通过WinCC以OPCUA通信协议连接Kepware，具体步骤如下：
注意：WinCC运行状态下…

选择连接参数。

双击添加服务器：输入127.0.0.1:49320；49320是Kepware的端口号。

选择浏览OPC服务器。

观察地址：ns=2;s=King.Win7.xx、ns=2;s=King.Win7.oo、ns=2;s=King.Win7.xx_out、ns=2;s=King.Win7.oo_out，将地址输入C#中。

学者浏览该篇文章时，如果遇到问题，建议先看以下两篇文章https://blog.csdn.net/weixin_37928884/article/details/128089765
https://blog.csdn.net/weixin_37928884/article/details/128087209
举一反三，C#通过OPCUA方式连接其它带有OPCUA功能的软件都可以用这种方法确认地址。