mes-client/PLCDataReader/PublicMethod/ModBusTCPClient.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace UAS_PLCDataReader.PublicMethod
{
    class ModBusTCPClient
    {
        private Socket socket;

        private IPEndPoint serverFullAddr;//完整终端地址

        private bool isOpen = false;

        private bool receiveData;

        private Dictionary<string, string> returnvalue = new Dictionary<string, string>();

        public bool IsOpen
        {
            get
            {
                return isOpen;
            }

            set
            {
                isOpen = value;
            }
        }

        public string IP
        {
            get
            {
                return iP;
            }

            set
            {
                iP = value;
            }
        }

        public string Port
        {
            get
            {
                return port;
            }

            set
            {
                port = value;
            }
        }

        public bool ReceiveData
        {
            get
            {
                return receiveData;
            }

            set
            {
                receiveData = value;
            }
        }

        public Dictionary<string, string> Returnvalue
        {
            get
            {
                return returnvalue;
            }

            set
            {
                returnvalue = value;
            }
        }

        private string iP;

        private string port;

        string decode = "";
        string dename = "";

        public ModBusTCPClient(string IP, int Port,string Decode,string Dename)
        {
            decode = Decode;
            dename = Dename;
            socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            serverFullAddr = new IPEndPoint(IPAddress.Parse(IP), Port);//设置IP，端口
            try
            {
                socket.Connect(serverFullAddr);
            }
            catch (Exception)
            {
                LogicHandler.UpdateDeviceStatus(decode, dename,"disconnect");
            }
        }

        public void Send(string Command)
        {
            try
            {
                if (!socket.Connected)
                {
                    socket.Close();
                    socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    socket.Connect(serverFullAddr);
                }
                Command = Command.Replace(" ", "");
                byte[] arr = new byte[Command.Length / 2];
                for (int i = 0; i < Command.Length / 2; i++)
                {
                    arr[i] = (byte)Convert.ToInt32(Command.Substring(i * 2, 2), 16);
                }
                socket.Send(arr);

                byte[] receive = new byte[1024 * 1024];
                LogicHandler.UpdateDeviceStatus(decode, dename, "noanswer");
                int length = socket.Receive(receive);
                LogicHandler.UpdateDeviceStatus(decode, dename, "running");
                if (!returnvalue.ContainsKey(socket.RemoteEndPoint.ToString()))
                {
                    returnvalue.Add(socket.RemoteEndPoint.ToString(), BaseUtil.ByteToHexadecimalString(receive, length));
                }
              
            }
            catch (Exception e)
            {
                LogicHandler.UpdateDeviceStatus(decode, dename, "disconnect");
            }
        }
    }
}