C#通过ADS通讯实现与倍福PLC通讯

1.引入倍福的TWINCAT的文件

引用--管理NUGET程序包--搜索Twincat--选择下图这个包安装

 2.安装完成后，写一个倍福ADS通讯操作类

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
using TwinCAT.Ads;



namespace SIC上位.BeckoffHelp
{

    public class BHelp
    {

        /// <summary>
        /// 创建Ads对象
        /// </summary>
        public TwinCAT.Ads.TcAdsClient _adsClient = new TcAdsClient();

        ///// <summary>
        ///// 定义连接PLC的AMSNetID
        ///// </summary>
        public string string_AmsNetID = "";

        ///// <summary>
        ///// 定义连接PLC的端口号
        ///// TwinCAT2，端口号801；TwinCAT3，端口号为851
        ///// </summary>
        public int iPort = 851;

        ////public  int iPort = 851;

        /// <summary>
        /// PLC连接成功的标志
        /// </summary>
        public bool bConnectToBeckhoffOK = false;

        public ArrayList notificationHandles = new ArrayList();





        public void ADS()
        {
            _adsClient = new TcAdsClient();
        }
        /// <summary>
        /// 连接到PLC
        /// </summary>
        public void ConnectPLC()
        {
            try
            {
                _adsClient.Connect(string_AmsNetID, iPort);
                //_adsClient.Connect(iPort);
                bConnectToBeckhoffOK = true;
            }
            catch
            {
                bConnectToBeckhoffOK = false;
            }
        }


        /// <summary>
        /// 断开PLC
        /// </summary>
        public void DisConnectPLC()
        {
            
                _adsClient.Dispose();
           
        }




        /// <summary>
        /// 读取int类型的变量，非实时刷新
        /// </summary>
        /// <param name="PlcVariableName"></param>
        /// <returns></retur