C#与西门子S7-1200PLC通信

【实例简介】

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Sharp7;

namespace Sharp7Example
{
    class Program
    {
        static void Main(string[] args)
        {
            //-------------- Create and connect the client
            var client = new S7Client();
            int result = client.ConnectTo("127.0.0.1", 0, 1);
            if (result == 0)
            {
                Console.WriteLine("Connected to 127.0.0.1");
            }
            else
            {
                Console.WriteLine(client.ErrorText(result));
                Console.ReadKey();
                return;
            }

            //-------------- Read db1
            Console.WriteLine("\n---- Read DB 1");

            byte[] db1Buffer = new byte[18];
            result = client.DBRead(1, 0, 18, db1Buffer);
            if (result != 0)
            {
                Console.WriteLine("Error: "   client.ErrorText(result));
            }
            int db1dbw2 = S7.GetIntAt(db1Buffer, 2);
            Console.WriteLine("DB1.DBW2: "   db1dbw2);

            double db1dbd4 = S7.GetRealAt(db1Buffer, 4);
            Console.WriteLine("DB1.DBD4: "   db1dbd4);

            double db1dbd8 = S7.GetDIntAt(db1Buffer, 8);
            Console.WriteLine("DB1.DBD8: "   db1dbd8);

            double db1dbd12 = S7.GetDWordAt(db1Buffer, 12);
            Console.WriteLine("DB1.DBD12: "   db1dbd12);

            double db1dbw16 = S7.GetWordAt(db1Buffer, 16);
            Console.WriteLine("DB1.DBD16: "   db1dbw16);

            //-------------- Read DB3
            Console.WriteLine("\n---- Read DB 3");

            byte[] db3Buffer = new byte[18];
            result = client.DBRead(3, 0, 18, db3Buffer);
            if (result != 0)
            {
                Console.WriteLine("Error: "   client.ErrorText(result));
            }
            int db3dbw2 = S7.GetIntAt(db3Buffer, 2);
            Console.WriteLine("DB3.DBW2: "   db3dbw2);

            double db3dbd4 = S7.GetRealAt(db3Buffer, 4);
            Console.WriteLine("DB3.DBD4: "   db3dbd4);

            double db3dbd8 = S7.GetDIntAt(db3Buffer, 8);
            Console.WriteLine("DB3.DBD8: "   db3dbd8);

            uint db3dbd12 = S7.GetDWordAt(db3Buffer, 12);
            Console.WriteLine("DB3.DBD12: "   db3dbd12);

            ushort db3dbd16 = S7.GetWordAt(db3Buffer, 16);
            Console.WriteLine("DB3.DBD16: "   db3dbd16);

            //-------------- Write Db1
            Console.WriteLine("\n---- Write BD 1");

            db1Buffer = new byte[12];
            const int START_INDEX = 4;
            S7.SetRealAt(db1Buffer, 4 - START_INDEX, (float)54.36);
            S7.SetDIntAt(db1Buffer, 8 - START_INDEX, 555666);
            S7.SetDWordAt(db1Buffer, 12 - START_INDEX, 123456);
            result = client.DBWrite(1, START_INDEX, db1Buffer.Length, db1Buffer);
            if (result != 0)
            {
                Console.WriteLine("Error: "   client.ErrorText(result));
            }

            //-------------- Read multi vars
            var s7MultiVar = new S7MultiVar(client);
            byte[] db1 = new byte[18];
            s7MultiVar.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, 1, 0, db1.Length, ref db1);
            byte[] db3 = new byte[18];
            s7MultiVar.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, 3, 0, db3.Length, ref db3);
            result = s7MultiVar.Read();
            if (result != 0)
            {
                Console.WriteLine("Error on s7MultiVar.Read()");
            }

            db1dbw2 = S7.GetIntAt(db1, 2);
            Console.WriteLine("DB1.DBW2.0 = {0}", db1dbw2);

            db1dbd4 = S7.GetRealAt(db1, 4);
            Console.WriteLine("DB1.DBW4.0 = {0}", db1dbd4);

            db1dbd8 = S7.GetDIntAt(db1, 8);
            Console.WriteLine("DB1.DBW8.0 = {0}", db1dbd8);

            db3dbw2 = S7.GetIntAt(db3, 2);
            Console.WriteLine("DB3.DBW2.0 = {0}", db3dbw2);

            db3dbd4 = S7.GetRealAt(db3, 4);
            Console.WriteLine("DB3.DBW4.0 = {0}", db3dbd4);

            db3dbd8 = S7.GetDIntAt(db3, 8);
            Console.WriteLine("DB3.DBW8.0 = {0}", db3dbd8);

            //-------------- Write multi vars
            s7MultiVar = new S7MultiVar(client);
            const int DB1_START_INDEX = 2;
            db1 = new byte[10];
            S7.SetIntAt(db1, 2 - DB1_START_INDEX, 50);
            S7.SetRealAt(db1, 4 - DB1_START_INDEX, (float)36.5);
            S7.SetDIntAt(db1, 8 - DB1_START_INDEX, 123456);
            s7MultiVar.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, 1, DB1_START_INDEX, db1.Length, ref db1);

            const int DB3_START_INDEX = 2;
            db3 = new byte[10];
            S7.SetIntAt(db3, 2 - DB3_START_INDEX, -50);
            S7.SetRealAt(db3, 4 - DB3_START_INDEX, (float)-25.36);
            S7.SetDIntAt(db3, 8 - DB3_START_INDEX, -123456);
            s7MultiVar.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, 3, DB3_START_INDEX, db3.Length, ref db3);
            result = s7MultiVar.Write();
            if (result != 0)
            {
                Console.WriteLine("Error on s7MultiVar.Read()");
            }

            //-------------- Disconnect the client
            client.Disconnect();
            Console.ReadKey();
        }
    }
}