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   源码介绍

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C# OMRON FINS UDP通信

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        UdpClient udpClient;
        byte Registertype=0x82;      
        IPAddress locateIp;
        IPEndPoint locatePoint;
        IPAddress remoteIp;
        IPEndPoint remotePoint;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

            txtLocateIP.Text = getIPAddress();
            txtRemoteIP.Text = getIPAddress();
            //禁止夸线程监视
            Control.CheckForIllegalCrossThreadCalls = false;//这种方法不好，只是方便，不提倡

        }
        private void btnServer_Click(object sender, EventArgs e)
        {
            if (udpClient != null)
                return;

            locateIp = IPAddress.Parse(txtLocateIP.Text);
            locatePoint = new IPEndPoint(locateIp, Convert.ToInt32(txtLocatePort.Text));
            udpClient = new UdpClient(locatePoint);

            remoteIp = IPAddress.Parse(txtRemoteIP.Text);
            remotePoint = new IPEndPoint(remoteIp, Convert.ToInt32(txtRemotePort.Text));
            //监听创建好后，就开始接收信息，并创建一个线程
            Thread th = new Thread(Receive);
            th.IsBackground = true;
            th.Start();

        }
        /// <summary>
        /// 接收线程方法
        /// </summary>
        void Receive()
        {

            byte[] recBuffer;
            //远端IP
            IPEndPoint remotePoint = new IPEndPoint(IPAddress.Any, 0);
            while (true)
            {
                try
                {

                    recBuffer = udpClient.Receive(ref remotePoint);
                    if (cBoxHex.Checked)
                    {
                        rtxtRec.AppendText(StringtoHex(recBuffer)   "\r\n");

                    }
                    else { 
                    if (recBuffer != null)
                    {
                        byte[] Num = new byte[2] { recBuffer[recBuffer.Length-2], recBuffer[recBuffer.Length-1] };
                        string zas = StringtoHex(Num);
                        Int32 xx = Convert.ToInt32(zas, 16);

                        rtxtRec.AppendText(xx   "\r\n");
                        
                    }
                    }
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.ToString());
                }
            }
        }
        string StringtoHex(byte[] myBytes)
        {
            string result=null;
            foreach (byte b in myBytes)
            {
                string val = b.ToString("X");
                result  = (val.Length == 2 ? val : "0"   val);
            }
            return result;
        }

        private void btnSend_Click(object sender, EventArgs e)
        {

            if (string.IsNullOrEmpty(rtxtSend.Text.Trim()))
                return;

            byte[] buffer = System.Text.Encoding.UTF8.GetBytes(rtxtSend.Text.Trim());

            udpClient.Send(buffer, buffer.Length, remotePoint);

        }
        /// <summary>
        /// 获取本地IP的方法
        /// </summary>
        /// <returns></returns>
        private string getIPAddress()
        {

            //获取本地所有IP地址
            IPHostEntry ipe = Dns.GetHostEntry(Dns.GetHostName());
            IPAddress[] ip = ipe.AddressList;
            for (int i = 0; i < ip.Length; i  )
            {
                if (ip[i].AddressFamily.ToString().Equals("InterNetwork"))
                {

                    return ip[i].ToString();
                }
            }
            return null;
        }

        private void btnwriter_Click(object sender, EventArgs e)
        {
       
            byte waddressL = Convert.ToByte((Convert.ToUInt16(wtxtaddress.Text) % 256).ToString());
            byte waddressH= Convert.ToByte(((Convert.ToUInt16(wtxtaddress.Text) /256)%256).ToString());
            byte wCountL = Convert.ToByte((Convert.ToUInt16(wtxtCount.Text) % 256).ToString());
            byte wCountH = Convert.ToByte(((Convert.ToUInt16(wtxtCount.Text) / 256) % 256).ToString());
            byte wdataL = Convert.ToByte((Convert.ToUInt16(wdata.Text) % 256).ToString());
            byte wdataH = Convert.ToByte(((Convert.ToUInt16(wdata.Text) / 256) % 256).ToString());
            IPAddress remoteIp = IPAddress.Parse(txtRemoteIP.Text);
         
            IPEndPoint remotePoint = new IPEndPoint(remoteIp, Convert.ToInt32(txtRemotePort.Text));
            byte[] wbuffer = { 0x80, 0x00, 0x02, 0x00, remoteIp.GetAddressBytes()[3], 0x00, 0x00, locateIp.GetAddressBytes()[3], 0x00, 0x00, 0x01, 0x02, Registertype, waddressH, waddressL, 0x00, wCountH, wCountL, wdataH, wdataL };
            udpClient.Send(wbuffer, wbuffer.Length, remotePoint);

            rtxtSend.Text = Convert.ToString(BitConverter.ToString(wbuffer, 0));
            
            
        }
    

        private void cnbRegistertype_SelectedIndexChanged(object sender, EventArgs e)
        {
            switch (cnbRegistertype.Text)
            {
                case "DR": Registertype = 0x82; break;
                case "WR": Registertype = 0xB1; break;
                case "CIO": Registertype = 0xB0;break;
                case "ER": Registertype = 0xA0; break;
                case "TIM": Registertype = 0x89;break;
                case "CNT": Registertype = 0x89;break;
                default: Registertype = 0x82; break;
            }
        }

        private void btnread_Click(object sender, EventArgs e)
        {
           // 800002000100002800000101820068000001
            byte RaddressL = Convert.ToByte((Convert.ToUInt16(Rtxtaddress.Text) % 256).ToString());
            byte RaddressH = Convert.ToByte(((Convert.ToUInt16(Rtxtaddress.Text) / 256) % 256).ToString());
            byte wCountL = Convert.ToByte((Convert.ToUInt16(RtxtCount.Text) % 256).ToString());
            byte RCountH = Convert.ToByte(((Convert.ToUInt16(RtxtCount.Text) / 256) % 256).ToString());
           // byte RdataL = Convert.ToByte((Convert.ToUInt16(Rdata.Text) % 256).ToString());
           // byte RdataH = Convert.ToByte(((Convert.ToUInt16(Rdata.Text) / 256) % 256).ToString());
            IPAddress remoteIp = IPAddress.Parse(txtRemoteIP.Text);
            IPEndPoint remotePoint = new IPEndPoint(remoteIp, Convert.ToInt32(txtRemotePort.Text));
            byte[] Rbuffer = { 0x80, 0x00, 0x02, 0x00, remoteIp.GetAddressBytes()[3], 0x00, 0x00, locateIp.GetAddressBytes()[3], 0x00, 0x00, 0x01, 0x01, Registertype, RaddressH, RaddressL, 0x00, RCountH, wCountL };
         
            udpClient.Send(Rbuffer, Rbuffer.Length, remotePoint);

        }


    }
}