开源 西门子PLC S7-200/300/400/1200/1500 TCP 通讯组件 C#开发

【实例简介】

1.C#语言开发，采用NET4.0框架，模块化设计，通信效率不怎么高 可以凑合用。

2.工程结构类似OPC通讯方式，采用Tag的方式，通过标签名就可以读写寄存器。

3.采用XML配置式标签的方式实时读写PLC内部寄存器，可读写寄存器包括I、Q、PI、PA、M、DB。

4.具有PLC断线重连功能，通讯稳定可靠。

5.完全开源免费、包括Dll文件、附件内包含源代码。

【实例截图】

【核心代码】 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using PLCComHelperProj;
using System.Net;
using System.IO;

namespace TestProj
{
    public partial class Form1 : Form
    {

        private ClientComHelper m_PLCComHelper = new ClientComHelper();

        public Form1()
        {
            InitializeComponent();


            m_PLCComHelper.TagConfigFile = Path.Combine(Application.StartupPath, "syscfg.xml");

            m_PLCComHelper.Init();

            Device s7 = m_PLCComHelper.GetDevice();

            int count = 0;

            foreach (KeyValuePair<string, TagGroup> ch in s7.TagGroups)
            {

                TagGroup c = ch.Value;


                foreach (KeyValuePair<string, Tag> tag in c.Tags)
                {
                    Tag ta = tag.Value;

                    string name = string.Format("{0}.{1}", c.Name, ta.Name);

                    ListViewItem item = new ListViewItem(name);
                  

                    item.SubItems.Add(ta.Desc);

                    item.SubItems.Add(ta.DataType);

                    item.SubItems.Add(ta.GetAddressName());

                    item.SubItems.Add("");

                    listView1.Items.Add(item);

                    count  ;
                }

            }

            toolStripStatusLabel2.Text = count.ToString()   "个" "    无使用限制";

        }

        private void button1_Click(object sender, EventArgs e)
        {
            m_PLCComHelper.IP = txtIP.Text;
            
            bool res = m_PLCComHelper.Start();


            if (!res)
            {
                MessageBox.Show("连接失败");
            }
            else
            {
                button1.Enabled = false;

                button2.Enabled = true;

                timer1.Start();

            }
        }

        private void button2_Click(object sender, EventArgs e)
        {

           timer1.Stop();

           m_PLCComHelper.Stop();

           button1.Enabled = true;

           button2.Enabled = false;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {

            // 0：未连接，1：TCP连接成功，2：PLC握手成功，3：读取过程中
            switch (m_PLCComHelper.CommStatus)
            {
                case 0:
                    label1.Text = "未连接";
                    break;

                case 1:
                    label1.Text = "正在进行TCP连接";
                    break;

                case 2:
                    label1.Text = "TCP连接成功";
                    break;

                case 3:
                    label1.Text = "PLC握手成功";
                    break;

                case 4:
                    label1.Text = "正常采集过程中...";
                    break;
                case 5:
                    label1.Text = "PLC握手错误";
                    break;

                case 6:
                    label1.Text = "通讯错误";
                    break;

                default:
                    break;
            }



            //label4.Text = m_PLCComHelper.GetRealValue("").ToString();

            //label4.Text = Convert.ToInt32(m_PLCComHelper.GetValue("M01.a1")).ToString();
            //label5.Text = m_PLCComHelper.GetValue("M01.a2").ToString();
            //label6.Text = m_PLCComHelper.GetValue("M01.a3").ToString();
            //label7.Text = Convert.ToInt32(m_PLCComHelper.GetValue("M01.a4")).ToString();
            //label8.Text = m_PLCComHelper.GetValue("M02.a4").ToString();


            Device s7 = m_PLCComHelper.GetDevice();

            
            foreach (KeyValuePair<string, TagGroup> ch in s7.TagGroups)
            {

                TagGroup c = ch.Value;
                foreach (KeyValuePair<string, Tag> tag in c.Tags)
                {

                    Tag ta = tag.Value;
                    string name = string.Format("{0}.{1}", c.Name, ta.Name);
                    ListViewItem item = listView1.FindItemWithText(name);
                    switch (ta.CheckDataType())
                    {
                        case e_PLC_DATA_TYPE.TYPE_INT:

                            item.SubItems[4].Text = Convert.ToInt32(m_PLCComHelper.GetValue(name)).ToString();

                            break;
                        case e_PLC_DATA_TYPE.TYPE_BYTE:

                            item.SubItems[4].Text = Convert.ToInt32(m_PLCComHelper.GetValue(name)).ToString();

                            break;

                        case e_PLC_DATA_TYPE.TYPE_FLOAT:

                            item.SubItems[4].Text =m_PLCComHelper.GetValue(name).ToString();

                            break;

                        case e_PLC_DATA_TYPE.TYPE_SHORT:

                            item.SubItems[4].Text = Convert.ToInt32(m_PLCComHelper.GetValue(name)).ToString();

                            break;

                        case e_PLC_DATA_TYPE.TYPE_BOOL:

                            item.SubItems[4].Text = Convert.ToInt32(m_PLCComHelper.GetValue(name)).ToString();

                            break;

                        default:
                            break;
                    }
                }
                
            }
            
        }


        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            m_PLCComHelper.Stop();
        }

        private void 修改数据ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string name = listView1.SelectedItems[0].SubItems[0].Text;

            Form2 frm = new Form2();

            frm.DataValue = Convert.ToDouble(listView1.SelectedItems[0].SubItems[4].Text);

            if (frm.ShowDialog() == DialogResult.OK)
            {
                m_PLCComHelper.WriteData(name, frm.DataValue);
            }
        }

        private void contextMenuStrip1_Opening(object sender, CancelEventArgs e)
        {
            if (listView1.SelectedItems.Count == 0)
            {
                e.Cancel = true;
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            button2.Enabled = false;
        }


    }
}

https://github.com/falionname/Siemens