西门子PLC与上位机C#源码Snap7.rar

西门子PLC使用C#读写PLC数据，采用S7 dll库连接下位，在上位显示相关数据。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using Snap7;
using System.Threading;

namespace Snap7_read
{
    public partial class Form1 : Form
    {
        private S7Client client1=new S7Client（）;
        private S7Client client2 = new S7Client（）;

        private byte[] DB_A = new byte[256];
        private byte[] DB_B = new byte[256];
        

        delegate void setTextCallback（string text）;


        private void SetText（string text）
        {
            if （this.textBox1.InvokeRequired）
            {
                while （!this.textBox1.IsHandleCreated）
                {
                    if （this.textBox1.Disposing || this.textBox1.IsDisposed）
                    {
                        return;
                    }
                }
                setTextCallback d = new setTextCallback（SetText）;
                this.textBox1.Invoke（d new object[] { text }）;
            }
            else
            {
                this.textBox1.Text = text;
            }  
        }

        private void SetText1（string text）
        {
            if （this.textBox2.InvokeRequired）
            {
                while （!this.textBox2.IsHandleCreated）
                {
                    if （this.textBox2.Disposing || this.textBox2.IsDisposed）
                    {
                        return;
                    }
                }
                setTextCallback d = new setTextCallback（SetText1）;
                this.textBox2.Invoke（d new object[] { text }）;
            }
            else
            {
                this.textBox2.Text = text;
            }
        }
        private void ShowResult（int Result）
        {
            // This function returns a textual explaination of the error code
           // TextError.Text = Client.ErrorText（Result）;
        }

        private string Dump（TextBox Box byte[] Buffer int Size）
        {
            string str = ““;
            // Declaration separated from the code for readability
            int y;
            //Box.Text = ““;
            y = 0;
            for （int c = 0; c < Size; c++）
            {
                String S = Convert.ToString（Buffer[c] 16）;
                if （S.Length == 1） S = “0“ + S;
                str = str+ “0x“ + S + “ “;
                y++;
                if （y == 8）
                {
                    y = 0;
                   str = str + （char）13 + （char）10; 
                }
            }
            return str;
        }
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void Form1_Load（object sender EventArgs e）
        {

        }

        private void button2_Click（object sender EventArgs e）
        {
            Thread thread1 = new Thread（（） =>
            {

                int result1 = client1.ConnectTo（“192.168.1.110“ 0 1

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

    .......      2518  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\.gitattributes

    .......      4305  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\.gitignore

    .......      2518  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\NewRepo\.gitattributes

    .......      4305  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\NewRepo\.gitignore

    .......       184  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\App.config

    .......      5074  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Form1.cs

    .......      4382  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Form1.Designer.cs

    .......      5889  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Form1.resx

    .......       500  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Program.cs

    .......      1282  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Properties\AssemblyInfo.cs

    .......      2762  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Properties\Resources.Designer.cs

    .......      5496  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Properties\Resources.resx

    .......      1067  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Properties\Settings.Designer.cs

    .......       242  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Properties\Settings.settings

    .......      3565  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Snap7 read.csproj

    .......    108239  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\snap7.net.cs

    .......      1104  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read.sln

     目录          0  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read\Properties

     目录          0  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\NewRepo

     目录          0  2018-10-29 14:55  Snap7-read-master\Snap7-read-master\Snap7 read

     目录          0  2018-10-29 14:55  Snap7-read-master\Snap7-read-master

     目录          0  2019-06-24 14:52  Snap7-read-master

----------- ---------  ---------- -----  ----

               153432                    22