使用S7.net读取西门子1500PLC

使用S7.net通信库，可以不使用任何功能块，直接用C# 访问西门子PLC

配置文件：记得用ANSI格式。因为微软的库默认ANSI

[配置信息]
IP地址=192.168.1.198
CPU类型=S71500
存储周期=10
自动存储=0

读取配置文件的工具类

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;namespace IniHelper
{public class IniConfigHelper{#region API函数声明[DllImport("kernel32")]private static extern long WritePrivateProfileString(string section, string key,string val, string filePath);//需要调用GetPrivateProfileString的重载[DllImport("kernel32", EntryPoint = "GetPrivateProfileString")]private static extern long GetPrivateProfileString(string section, string key,string def, StringBuilder retVal, int size, string filePath);[DllImport("kernel32", EntryPoint = "GetPrivateProfileString")]private static extern uint GetPrivateProfileStringA(string section, string key,string def, Byte[] retVal, int size, string filePath);#endregion#region 读Ini文件public static string ReadIniData(string Section, string Key, string NoText, string iniFilePath){if (File.Exists(iniFilePath)){StringBuilder temp = new StringBuilder(1024);GetPrivateProfileString(Section, Key, NoText, temp, 1024, iniFilePath);return temp.ToString();}else return String.Empty;}#endregion#region 写Ini文件public static bool WriteIniData(string Section, string Key, string Value, string iniFilePath){long OpStation = WritePrivateProfileString(Section, Key, Value, iniFilePath);if (OpStation == 0)return false;else return true;}#endregion}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace IniHelper
{public class SettingManager{public SettingManager(string path)//ctor 构造方法快捷键{this.Path = path;}private string _path;SysSettings sysSettings = new SysSettings();public string Path { get => _path; set => _path = value; }//cirl+R+Epublic SysSettings LoadSysSettings(){sysSettings.IpAdress = IniConfigHelper.ReadIniData("配置信息", "IP地址", "1", _path);sysSettings.CpuType = IniConfigHelper.ReadIniData("配置信息", "CPU类型", "S71200", _path);sysSettings.StoreTime = IniConfigHelper.ReadIniData("配置信息", "存储周期", "10", _path);sysSettings.AutoSore = IniConfigHelper.ReadIniData("配置信息", "自动存储", "0", _path);return sysSettings;//try//{//}//catch (Exception)//{//    return null;//}//ConfigFile}//SysSettings sysSettings = new SysSettings();public bool SaveSysSettings(SysSettings sysSettings){bool result = true;result &= IniConfigHelper.WriteIniData("配置信息","IP地址",sysSettings.IpAdress, _path);result &= IniConfigHelper.WriteIniData("配置信息", "CPU类型", sysSettings.CpuType, _path);result &= IniConfigHelper.WriteIniData("配置信息", "存储周期", sysSettings.StoreTime.ToString(), _path);result &= IniConfigHelper.WriteIniData("配置信息", "自动存储", sysSettings.AutoSore.ToString(), _path);return result;}}
}

PLC的信息类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace IniHelper
{public class SysSettings{public string IpAdress { get; set; }public string CpuType { get; set; }public string StoreTime { get; set; }public string AutoSore { get; set; }}
}

定义15个ushort变量，对应1500里15个word变量

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace IniPractice
{public class CommunicationState{//建立15个变量，1500PLC使用word发送public ushort SatusValue { get; set; }public ushort LimitLeft { get; set; }public ushort RightLeft { get; set; }public ushort LimitOriginal { get; set; }public ushort RunState { get; set; }public ushort CurrentSpeed { get; set; }public ushort CurrentPosition { get; set; }public ushort SpeedSet1 { get; set; }public ushort SpeedSet2 { get; set; }public ushort SpeedSet3 { get; set; }public ushort SpeedSet4 { get; set; }public ushort SpeedSet5 { get; set; }public ushort SpeedSet6 { get; set; }public ushort SpeedSet7 { get; set; }public ushort SpeedSet8 { get; set; }}
}

建立通信类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using IniHelper;
using S7.Net;
using thinger.cn.DataConvertHelper;namespace IniPractice
{public class CoreLogicManager{private Plc simensS7 = null;//public int MyProperty { get; set; }public CommunicationState CurentState { get; set; } = new CommunicationState();private CancellationTokenSource cts = new CancellationTokenSource();//连接public bool ConnectPLC(SysSettings sysSettings){try{simensS7 = new Plc((CpuType)Enum.Parse(typeof(CpuType), sysSettings.CpuType), sysSettings.IpAdress, 0,0);simensS7.Open();}catch (Exception){return false;}//采集 多线程执行Task.Run(() =>{PLCCommucation();}, cts.Token);return true;}private void PLCCommucation(){while (!cts.IsCancellationRequested){byte[] result = simensS7.ReadBytes(S7.Net.DataType.DataBlock, 1, 0,30);//起始地址，数量30//数据解析 截取字节数组，转换为需要的值if (result!=null && result.Length==30){CurentState.SatusValue = UShortLib.GetUShortFromByteArray(result, 0);//状态值 偏移量CurentState.LimitLeft = UShortLib.GetUShortFromByteArray(result, 2);//状态值CurentState.RightLeft = UShortLib.GetUShortFromByteArray(result, 4);//状态值CurentState.LimitOriginal = UShortLib.GetUShortFromByteArray(result, 6);//状态值CurentState.RunState = UShortLib.GetUShortFromByteArray(result, 8);//状态值//CurentState.SatusValue = ByteLib.GetByteFromByteArray(result,0);//状态值//CurentState.LimitLeft = BitLib.GetBitFromByteArray(result, 20, 5);//20个字节第5个位}}}//断开private void PLCClose(){if (cts!=null){cts.Cancel();}if(simensS7!=null){simensS7.Close();}}}
}

主窗体

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 IniHelper;
using S7.Net;namespace IniPractice
{public partial class FrmMain : Form{public FrmMain(){InitializeComponent();this.SetsManager = new SettingManager(Application.StartupPath + "\\config.ini");this.SysSets = SetsManager.LoadSysSettings();}//声明2个对象 private SysSettings _sysSets;private SettingManager _setsManager;public SysSettings SysSets { get => _sysSets; set => _sysSets = value; }public SettingManager SetsManager { get => _setsManager; set => _setsManager = value; }private void button1_Click(object sender, EventArgs e){FrmCommonSet frmCommonSet = new FrmCommonSet(_setsManager, _sysSets);//对外传值用属性frmCommonSet.Show();}}
}

通信窗体

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 IniHelper;namespace IniPractice
{public partial class FrmCommonSet : Form{public FrmCommonSet(SettingManager settingManager, SysSettings sysSettings){InitializeComponent();this.SetsManager = settingManager;this.SysSets = sysSettings;if (sysSettings!=null){this.txtAutoSore.Text = SysSets.AutoSore.Trim();this.txtIpAdress.Text = SysSets.IpAdress.Trim();this.txtStoreTime.Text = SysSets.StoreTime.Trim();this.cmbConfig.Text = SysSets.CpuType.Trim();}}//声明2个对象private SysSettings _sysSets;private SettingManager _setsManager;private CoreLogicManager PlcConnect = new CoreLogicManager();public SysSettings SysSets { get => _sysSets; set => _sysSets = value; }public SettingManager SetsManager { get => _setsManager; set => _setsManager = value; }private void btnSave_Click(object sender, EventArgs e){}private void btnSet_Click(object sender, EventArgs e){SysSets.IpAdress = this.txtIpAdress.Text.Trim();SysSets.CpuType = this.cmbConfig.Text.ToString();           this.cmbConfig.Text.Trim();SysSets.StoreTime = this.txtStoreTime.Text.Trim();SysSets.AutoSore = this.txtAutoSore.Text.Trim();bool result = SetsManager.SaveSysSettings(SysSets);if (result){MessageBox.Show("配置信息存储成功！","配置存储");}else{MessageBox.Show("配置信息存储失败！", "配置存储");}}private void FrmCommonSet_Load(object sender, EventArgs e){//cmbConfig.Items.Add("S7200");//0//cmbConfig.Items.Add("Logo0BA8");//1//cmbConfig.Items.Add("S7200Smart");//2//cmbConfig.Items.Add("S7300");//10//cmbConfig.Items.Add("S7400");//20//cmbConfig.Items.Add("S71200");//30//cmbConfig.Items.Add("S71500");//40cmbConfig.Items.AddRange(new string[] {"S7200", "Logo0BA8", "S7200Smart","S7300","S7400","S71200","S71500"});}private void btnConnect_Click(object sender, EventArgs e){bool res = PlcConnect.ConnectPLC(_sysSets);if (res){MessageBox.Show("PLC连接成功");this.label1.Text = PlcConnect.CurentState.SatusValue.ToString();this.label2.Text = PlcConnect.CurentState.LimitLeft.ToString();this.label3.Text = PlcConnect.CurentState.RightLeft.ToString();}else{MessageBox.Show("PLC连接失败");}}}
}

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