在虛擬機中使用NetToPLCSim和PLC相連.

1,虛擬機...系統Win10...里面安裝了VS.

2,本機...系統Win10...里面安裝了博圖15.

3,轉換軟件:NetToPLCSIM.

4,本機和虛擬機連接同一個路由器.注意:

5,設置虛擬機為橋接模式,並且選擇連接了路由器的網卡.

6,網卡設置自動獲取IP地址,並且禁止,啟用,讓網卡獲取IP地址.

本機IP:

虛擬機IP:

正常情況,兩台機器能夠互相ping 成功!,則基本准備,網絡配置完畢.否則,檢查防火牆.我沒遇到,就沒弄.

然后打開博圖,必須要進行get/put打勾!

  1,設置PLC ip

2,GET/PUT 打勾

                 

3,模擬的時候,先點擊模擬,但是不要下載PLC.

4,打開Nettoplcsim軟件:(其中有 stop server start server 默認即可),注意,一定要先打開這個軟件.

5,打開添加對接畫面:點擊PLCSIM IP.注意,如果先模擬再添加就不會顯示.

沒有PLC

6,打開PLC模擬器,並下載PLC 點擊 PLCSIM IP:這個很關鍵,必須它自己跳出來的.選擇PLC.

7,選擇 NET IP ADDR:

8,ok注意 rack和slot選擇

9,在虛擬機的VS里面測試通訊

 internal static void TestS7()
        {


            Plc plc = new Plc(CpuType.S71200, "192.168.3.62", 0, 1);
            try
            {
                log("begin open plc");
                plc.Open();//一個PLC異步函數,注意,異步函數的異常只能通過
                log("plc is open!");
            }
            catch(Exception e)
            {
                log(e.Message);
            }
        }

結果:

10,嘗試讀取寫入byte[]數組:

  RecipePLC 數據類型具有:(配方)

    一個字符串: string[20] 占用了22個字節.Index0是其大小,應該是22,index1 是實際字符長度.應該是0.現在

   一個step數組:step是一個plc數據類型. 其為30個step元素.

每個step含有:

OK,我們先來完成如何讀取寫入這個結構:

10.1首先在vs中架構一個PLCSTRING類,因為 string這個類不好投射.

 public class PlcString:IPlcParse
    {
        private readonly byte[] bytes;
        public PlcString() : this(256) { }
        public PlcString(int len )
        {
            bytes = new byte[len];
            bytes[0] = len <= 0xfe ? (byte)len : (byte)0xfe;



        }
        public void SetString(string str)
        {
            int len = bytes.Length;
            if (str != string.Empty)
            {
                byte[] str_bytes = ASCIIEncoding.ASCII.GetBytes(str);
                bytes[1] = (byte)str_bytes.Length;
                str_bytes.CopyTo(bytes, 2);
            }
            else
            {
                bytes[1] = 0;

            }
        }
        public string GetString()
        {
            if (bytes[1] != 0)
            {
                byte[] strs = new byte[(int)bytes[1]];
                Buffer.BlockCopy(bytes, 2, strs, 0, (int)bytes[1]);
                return ASCIIEncoding.ASCII.GetString(strs);
            }
            else
            {
                return string.Empty;
            }


        }

        public static explicit operator String(PlcString obj)
        {
            return obj.GetString();
        }

        public  object FromBytes(byte[] bytes, ref double numBytes)
        {
            numBytes = Math.Ceiling(numBytes);
            if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                numBytes++;
            Buffer.BlockCopy(bytes, (int)numBytes, this.bytes, 0, this.bytes.Length);
            numBytes += this.bytes.Length;
            return this;
        }

        public int GetSize()
        {
            return bytes.Length;
        }

        public void ToBytes(byte[] bytes, ref double numBytes)
        {
            numBytes = Math.Ceiling(numBytes);
            if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                numBytes++;
            Buffer.BlockCopy(this.bytes, 0,bytes, (int)numBytes, this.bytes.Length);
            numBytes += this.bytes.Length;
        }
        public void Display()
        {
            foreach (var x in bytes)
                Console.Write(" {0:X2}", x);
            Console.WriteLine();
        }
    }

這個類實現了如下的接口:

 public interface IPlcParse
    {
        void ToBytes(byte[] bytes, ref double numBytes);
        object FromBytes(byte[] bytes, ref double numBytes);
        int GetSize();
    }

https://gitee.com/mao_qin_bin/s7netplus

算了,太多了,大家到這個地方下載吧. 注意版權.是我的!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

在原有的S7的基礎上更改的實現.(git下來之后,我們再開始下一步)

下面我們來實現VS中的step步:

public class Recipe_Step
    {
        public short element1;
        public short element2;
        public short element3;
        public short element4;
        public short element5;
        public short element6;
        public double element7;
        public double element8;
        public double element9;
        public double element10;
        public double element11;
        public double element12;
        public double element13;
        public bool element14;
        public bool element15;
        public short element16;
    }

1,int--投射成short

2,real-投射成double

3,注意大小是64個字節.我們來計算下我們的類的大小.

 public static void demo5()
        {

            PlcClassHelper.DisplayObject(new Recipe_Step());


        }

結果:

 Recipe_Step : ConsoleApp1.PlcClass.Recipe_Step   Size:44

Class of Recipe_Step
   Int16 : 0   Size:2
   Int16 : 0   Size:2
   Int16 : 0   Size:2
   Int16 : 0   Size:2
   Int16 : 0   Size:2
   Int16 : 0   Size:2
   Double : 0   Size:4
   Double : 0   Size:4
   Double : 0   Size:4
   Double : 0   Size:4
   Double : 0   Size:4
   Double : 0   Size:4
   Double : 0   Size:4
   Boolean : False   Size:2
   Boolean : False   Size:2
   Int16 : 0   Size:2

OK.

然后再測試下Recipe1:

 public class Recipe
    {
        public static Recipe StaticInstance=new Recipe();
        public PlcString Recipe_Name = new PlcString(20, "");
        public Recipe_Step[] Recipe_Steps = new Recipe_Step[30];
        private Recipe()
        {
            for(var i = 0; i < Recipe_Steps.Length; i++)
            {
                Recipe_Steps[i] = new Recipe_Step();
            }
        }
    }

這是PLC數據塊(非優化)編譯好的

這是我測試的:

Recipe : ConsoleApp1.PlcClass.Recipe   Size:1342

Class of Recipe
   PlcString :  String =   Bytes = : 14  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0    Size:22

Array of ConsoleApp1.PlcClass.Recipe_Step[] :
     Recipe_Step : ConsoleApp1.PlcClass.Recipe_Step   Size:44

Class of Recipe_Step
       Int16 : 0   Size:2
       Int16 : 0   Size:2
       Int16 : 0   Size:2
       Int16 : 0   Size:2
       Int16 : 0   Size:2
       Int16 : 0   Size:2
       Double : 0   Size:4
       Double : 0   Size:4
       Double : 0   Size:4
       Double : 0   Size:4
       Double : 0   Size:4
       Double : 0   Size:4
       Double : 0   Size:4
       Boolean : False   Size:2
       Boolean : False   Size:2
       Int16 : 0   Size:2
     Recipe_Step : ConsoleApp1.PlcClass.Recipe_Step   Size:44

完全正確.下面設定下一些數據並且從PLC的讀取:

10.5 設置PLC數據

10.6 從PLC讀取數據:

完全一致:

10.7 將數據寫入PLC:

 public static void demo6()
        {

            Recipe curRecipe = Recipe.StaticInstance;//引用配方
            Recipe.Initial();
            short t = 0;
            foreach(var step in curRecipe.Recipe_Steps)
            {
                step.element1 = t++;
                step.element16 = t++;


            }






            Plc plc = new Plc(CpuType.S71200, "192.168.3.62", 0, 1);
            try
            {
                plc.Open();
                plc.WriteBytes(DataType.DataBlock, 1, 0, PlcClass.ToBytes(curRecipe));
                PlcClassHelper.DisplayObject(curRecipe);
            }
            catch (PlcException e)
            {
                Console.WriteLine("Exception'Message is {0},Exception's Errcode is {1}", e.Message, e.ErrorCode.ToString());
            }
            finally
            {
                plc.Close();
            }

        }

上面的Initial是將staticInstance實列給初始化了.

查看結果: PLC

查看結果:VS