Picproje Elektronik Sitesi

using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Sharp7;

namespace WindowsFormsApplication_MultiRW_Example
{
    public partial class Form1 : Form
    {
        static S7Client client = new S7Client();
        static S7MultiVar s7MultiVar = new S7MultiVar(client);
        public static byte[] bufferx = new byte[Constants.BUFFER_SIZE];
        public static int result;

        //------------------------------------------------------------------------------
        // Constants
        //------------------------------------------------------------------------------
        static class Constants
        {
            public const int START_NUMBER = 0;
            public const int OPTION_READ_NUMBER = 1;
            public const int OPTION_WRITE_NUMBER = 2;
            public const int BUFFER_SIZE = 400;
            public const int NO_ERROR_NUMBER = 0;
            public const int RACK_NUMBER = 0;
            public const int SLOT_NUMBER = 1;
            // BUFFER_SIZE'ın DB_Size'dan büyük olması sorun çıkartabiliyor. BUFFER_SIZE 458'den büyükse sorun çıkıyor
        }

        //------------------------------------------------------------------------------
        // Connect to PLC
        //------------------------------------------------------------------------------
        private void connect_to_plc(string plc_adress)
        {
            result = client.ConnectTo(plc_adress, Constants.RACK_NUMBER, Constants.SLOT_NUMBER);
            if (result == Constants.NO_ERROR_NUMBER)
            {
                lbl_result.Text = "Connected to " + plc_adress;
            }
            else
            {
                lbl_result.Text = client.ErrorText(result);
                return;
            }
        }

        //------------------------------------------------------------------------------
        // Multi Read
        //------------------------------------------------------------------------------
        private void multi_read_from_db(int db_number, int data_adress)
        {
            s7MultiVar.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, db_number, Constants.START_NUMBER, bufferx.Length, ref bufferx);
            result = s7MultiVar.Read();
            if (result == Constants.NO_ERROR_NUMBER)
            {
                lbl_result.Text = "DB" + db_number + ", " + data_adress + ".0 = " + S7.GetWordAt(bufferx, data_adress);
            }
            else
            {
                lbl_result.Text = ("Error on s7MultiVar.Read() " + result);
            }
            txb_dataValue.Text = "";
            // DB'den BUFFER_SIZE kadar data, bufferx'e aktarıldı.
        }

        
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            txb_plcAdress.Text = "192.168.0.1";
            lbl_result.Text = "";
        }

        private void btn_connect_Click(object sender, EventArgs e)
        {
            string plc_adress = txb_plcAdress.Text;
            connect_to_plc(plc_adress);
            
        }

        private void btn_read_Click(object sender, EventArgs e)
        {
            int db_number = int.Parse(txb_dbNumber.Text);
            int data_adress = int.Parse(txb_dataAdress.Text);
            multi_read_from_db(db_number, data_adress);
        }
    }
}

                        int StartIndex = 0;
                        byte[] readBuffer = new byte[836];
                        int resultDBRead = client.DBRead(DBNumber, StartIndex, readBuffer.Length, readBuffer);
                        foreach (var tag in tags)//Elinizdeki tagler burada olacak ve okumayı buradan yapacaksınız
                        {
                            pLCTag.TagValue = S7.GetByteAt(readBuffer, tag.Offset);//byte
                            pLCTag.TagValue = S7.GetWordAt(readBuffer, tag.Offset);//word
                            pLCTag.TagValue = S7.GetRealAt(readBuffer, tag.Offset);//dword
                            //Stringte iş biraz karışık. 20 lik bir alanın 0 indexte alanın toplam boyutu yazar, 1. indexte de içerisindeki değerin toplam boyutu yazar o sebeple aslında 18lik alan vardır
                            pLCTag.stringset = S7.GetStringAt(readBuffer, tag.Offset);//String ise bu ama bazen alttaki
                            pLCTag.charset = S7.GetCharsAt(readBuffer, tag.Offset , tag.DataTypeSize);//String ancak boyut vermeniz gerekiyor
                        }