C#项目，跟西门子PLC通讯

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using S7.Net;namespace MeProgram
{public class S7NetPlc{Plc plc;/// <summary>/// 初始化S7NetPLC/// </summary>/// <param name="IP"></param>/// <param name="CPUType"></param>public S7NetPlc(string IP, string CPUType ="S71200"){CreatePlc(IP, CPUType);}/// <summary>/// 实例化PLC  IP和CPU型号  CPU型号默认S71200/// </summary>/// <param name="ip"></param>/// <param name="cpu"></param>void CreatePlc(string ip, string cpu){CpuType cputype = new CpuType();if (Enum.TryParse(cpu.ToUpper(), out cputype)){plc = new Plc(cputype, ip, 0, 1);}else{Console.WriteLine("CPU型号错误");}}/// <summary>/// 连接PLC 再次调用可重新连接/// </summary>public async void Connet(){try{await plc.OpenAsync();}catch (Exception ex){Console.WriteLine(ex.Message);}}/// <summary>/// PLC连接状态/// </summary>/// <returns></returns>public bool ConnetStatus(){return plc.IsConnected;}#region 读取PLC数据/// <summary>/// 读取PLC 输入点 i/// </summary>/// <param name="start">开始的地址</param>/// <param name="字节数">读取字节数量</param>/// <returns></returns>public BitArray Get_I(int 地址I点, int 数量){BitArray bitArray = new BitArray(数量);try{if (plc.IsConnected){bitArray = (BitArray)plc.Read(DataType.Input, 0, 地址I点, VarType.Bit, 数量);}}catch (Exception ex){Console.WriteLine(ex.Message);}return bitArray;}/// <summary>/// 读取PLC 输出点Q/// </summary>/// <param name="start">开始的地址</param>/// <param name="字节数">读取字节数量</param>/// <returns></returns>public BitArray Get_Q(int 地址Q点, int 数量){BitArray bitArray = new BitArray(数量);try{if (plc.IsConnected){bitArray = (BitArray)plc.Read(DataType.Output, 0, 地址Q点, VarType.Bit, 数量);}}catch (Exception ex){Console.WriteLine(ex.Message);}return bitArray;}/// <summary>/// 读取PLC默认寄存器地址/// </summary>/// <param name="地址M点"></param>/// <param name="字节数"></param>/// <returns></returns>public BitArray Get_M(int 地址M点, int 数量){BitArray bitArray = new BitArray(数量);try{if (plc.IsConnected){bitArray = (BitArray)plc.Read(DataType.Memory, 0, 地址M点, VarType.Bit, 数量);}}catch (Exception ex){Console.WriteLine(ex.Message);}return bitArray;}/// <summary>/// 批量读取连续的 bool 值/// </summary>/// <param name="DB"></param>/// <param name="起始地址"></param>/// <param name="数量"></param>/// <returns></returns>public BitArray Get_BitArray(int DB, int 偏移量, int 数量){BitArray bitArray = new BitArray(数量);try{if (plc.IsConnected){bitArray = (BitArray)plc.Read(DataType.DataBlock, DB, 偏移量, VarType.Bit, 数量);}}catch (Exception ex){Console.WriteLine(ex.Message);}return bitArray;}/// <summary>/// 读取PLC DB块字节数据/// </summary>/// <param name="DB">DB块</param>/// <param name="start">开始的偏移量</param>/// <param name="字节数">读取的长度</param>/// <returns></returns>public byte[] Get_bytes(int DB, int 偏移量, int 数量){byte[] db_byte = new byte[数量];try{if (plc.IsConnected){db_byte = plc.ReadBytes(DataType.DataBlock, DB, 偏移量, 数量);}}catch (Exception ex){Console.WriteLine("读取PLC_byte_Error:" + ex.Message);}return db_byte;}/// <summary>/// 读取PLC DB快16位有符号数据 /// </summary>/// <param name="绝对地址"></param>/// <returns></returns>public short Get_int(int DB, int 偏移量){short data = 0;try{if (plc.IsConnected){data = (short)plc.Read(DataType.DataBlock, DB, 偏移量, VarType.Int, 1);}}catch (Exception ex){Console.WriteLine("读取PLC_int_Error:" + ex.Message);}return data;}/// <summary>/// 读取PLC DB块32位有符号数据/// </summary>/// <param name="DB"></param>/// <param name="偏移量"></param>/// <returns></returns>public int Get_Dint(int DB, int 偏移量){int data = 0;try{if (plc.IsConnected){data = (int)plc.Read(DataType.DataBlock, DB, 偏移量, VarType.DInt, 1);}}catch (Exception ex){Console.WriteLine("读取PLC_Dint出错:" + ex.Message);}return data;}/// <summary>/// 读取PLC DB快16位无符号数据/// </summary>/// <param name="绝对地址"></param>/// <returns></returns>public ushort Get_Word(int DB, int 偏移量){ushort data = 0;try{if (plc.IsConnected){data = (ushort)plc.Read(DataType.DataBlock, DB, 偏移量, VarType.Word, 1);}}catch (Exception ex){Console.WriteLine("读取PLC_Word_Error:" + ex.Message);}return data;}/// <summary>/// 读取PLC DB快32位无符号数据/// </summary>/// <param name="DB"></param>/// <param name="偏移量"></param>/// <returns></returns>public uint Get_DWord(int DB, int 偏移量){uint data = 0;try{if (plc.IsConnected){data = (uint)plc.Read(DataType.DataBlock, DB, 偏移量, VarType.DWord, 1);}}catch (Exception ex){Console.WriteLine("读取PLC_DWord出错:" + ex.Message);}return data;}/// <summary>/// 读取PLC Timer 类型数据/// </summary>/// <param name="绝对地址"></param>/// <returns></returns>public int Get_Timer(string 绝对地址){object ss = 0;try{if (plc.IsConnected){ss = plc.Read(绝对地址.ToUpper());}}catch (Exception ex){Console.WriteLine("读取PLC_Timer_Error:" + ex.Message);}int fs = Convert.ToInt32(ss);return fs;}/// <summary>/// 读取PLC Real 类型数据/// </summary>/// <param name="绝对地址">PLC绝对地址</param>/// <returns></returns>public float Get_Real(int DB, int 偏移量){float result = 0;try{if (plc.IsConnected){result = (float)plc.Read(DataType.DataBlock, DB, 偏移量, VarType.Real, 1);}}catch (Exception ex){Console.WriteLine("读取PLC_Real_Error:" + ex.Message);}return result;}/// <summary>/// 读取PLC string 类型数据/// </summary>/// <param name="DB">DB块</param>/// <param name="偏移地址">开始的偏移量</param>/// <returns></returns>public string Get_String(int DB, int 偏移量){string 返回值 = string.Empty;try{if (plc.IsConnected){//西门子字符串长度 第一个字节是字符串的总长度 第二个是字符串的当前长度 要从当前字节的+1字节读取当前长度var bytelen = (byte)plc.Read(DataType.DataBlock, DB, 偏移量 + 1, VarType.Byte, 1);返回值 = (string)plc.Read(DataType.DataBlock, DB, 偏移量 + 2, VarType.String, bytelen);}}catch (Exception ex){Console.WriteLine("读取PLC_String_Error:" + ex.Message);}return 返回值;}#endregion#region 写入PLC数据/// <summary>/// 写入PLC输出点Q 地址/// </summary>/// <param name="输出Q">Q5.0 的5</param>/// <param name="第几位">Q5.4 的4</param>/// <param name="值">值</param>public void Set_Q(int 输出Q, int 第几位, bool 值){try{if (plc.IsConnected){plc.WriteBit(DataType.Output, 0, 输出Q, 第几位, 值);}}catch (Exception ex){Console.WriteLine("写入Q点出错:" + ex.Message);}}/// <summary>/// 写入PLC默认寄存器地址/// </summary>/// <param name="地址M"></param>/// <param name="第几位"></param>/// <param name="值"></param>public void Set_M(int 地址M, int 第几位, bool 值){try{if (plc.IsConnected){plc.WriteBit(DataType.Memory, 0, 地址M, 第几位, 值);}}catch (Exception ex){Console.WriteLine("写入M地址:" + ex.Message);}}/// <summary>/// 写入PLCDB块 bool 类型地址/// </summary>/// <param name="DB"></param>/// <param name="偏移量">分配的第几个字节</param>/// <param name="第几位">字节里的第几位</param>/// <param name="值"></param>public void Set_Bit(int DB, int 偏移量, int 第几位, bool 值){try{if (plc.IsConnected){plc.WriteBit(DataType.DataBlock, DB, 偏移量, 第几位, 值);}}catch (Exception ex){Console.WriteLine("写入PLC_bool出错:" + ex.Message);}}/// <summary>/// 写入PLC DB块16位有符号数据/// </summary>/// <param name="绝对地址"></param>/// <param name="值"></param>public void Set_int(string 绝对地址, short 值){try{if (plc.IsConnected){plc.Write(绝对地址.ToUpper(), 值);}}catch (Exception ex){Console.WriteLine("写入PLC_int出错:" + ex.Message);}}/// <summary>/// 写入PLC DB块32位有符号数据/// </summary>/// <param name="绝对地址"></param>/// <param name="值"></param>public void Set_Dint(string 绝对地址, int 值){try{if (plc.IsConnected){plc.Write(绝对地址.ToUpper(), 值);}}catch (Exception ex){Console.WriteLine("写入PLC_Dint出错:" + ex.Message);}}/// <summary>/// 写入PLC DB块16位无符号数据/// </summary>/// <param name="绝对地址"></param>/// <param name="值"></param>public void Set_Word(string 绝对地址, ushort 值){try{if (plc.IsConnected){plc.Write(绝对地址.ToUpper(), 值);}}catch (Exception ex){Console.WriteLine("写入PLC_Word出错:" + ex.Message);}}/// <summary>/// 写入PLC DB块32位无符号数据/// </summary>/// <param name="绝对地址"></param>/// <param name="值"></param>public void Set_DWord(string 绝对地址, uint 值){try{if (plc.IsConnected){plc.Write(绝对地址.ToUpper(), 值);}}catch (Exception ex){Console.WriteLine("写入PLC_DWord出错:" + ex.Message);}}/// <summary>/// 写入PLC Real 类型地址/// </summary>/// <param name="绝对地址"></param>/// <param name="值"></param>public void Set_Real(string 绝对地址, float 值){try{if (plc.IsConnected){plc.Write(绝对地址.ToUpper(), 值);}}catch (Exception ex){Console.WriteLine("写入PLC_Real出错:" + ex.Message);}}/// <summary>/// 写入PLC Timer 类型地址/// </summary>/// <param name="绝对地址"></param>/// <param name="值"></param>public void Set_Timer(string 绝对地址, int 值){try{if (plc.IsConnected){plc.Write(绝对地址.ToUpper(), 值);}}catch (Exception ex){Console.WriteLine("写入PLC_Timer出错:" + ex.Message);}}/// <summary>/// 写入PLC string 类型地址/// </summary>/// <param name="DB">DB块</param>/// <param name="偏移地址">分配的偏移量</param>/// <param name="值"></param>public void Set_String(int DB, int 偏移量, string Values){try{if (plc.IsConnected){var lenMax = (byte)plc.Read(DataType.DataBlock, DB, 偏移量, VarType.Byte, 1);//拿到地址申请的字节长度plc.Write(DataType.DataBlock, DB, 偏移量, GetStringByteArray(lenMax, Values));}}catch (Exception ex){Console.WriteLine("写入PLC_String出错:" + ex.Message);}}/// <summary>/// 把 string数据 转换成西门子String数据格式/// </summary>/// <param name="datastring"></param>/// <returns></returns>private byte[] GetStringByteArray(byte LenMax, string Values){byte[] byteArray = Encoding.Default.GetBytes(Values);byte[] sheel = new byte[2];sheel[0] = Convert.ToByte(LenMax);//申请的最大内存sheel[1] = Convert.ToByte(Values.Length);//当前字符长度return sheel.Concat(byteArray).ToArray();}#endregion}
}