python通过opc读plc实例_OPC通讯实例(C#通过OPC连接PLC读写数据)

【实例简介】C#通过OPC连接PLC读写数据

【实例截图】

【核心代码】

using System;

using System.Collections.Generic;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using OPCAutomation;

using System.Diagnostics;

namespace OPC_Client

{

public partial class Form1 : Form

{

OPCServer objServer;

OPCGroups objGroups;

OPCGroup objGroup;

OPCItems objItems;

Array strItemIDs;

Array lClientHandles;

Array lserverhandles;

Array lErrors;

// int ltransID_Rd = 1;

// int lCancelID_Rd;

object RequestedDataTypes = null;