ZZ-EFEM/Jet/Jet_001_2P_Jet/EfemRT/Devices/SuperMCProtocalPLC.cs

using Aitex.Core.RT.DataCenter;
using Aitex.Core.RT.Device;
using Aitex.Core.RT.Event;
using Aitex.Core.RT.Log;
using Aitex.Core.RT.OperationCenter;
using Aitex.Core.Util;
using MECF.Framework.Common.Communications;
using MECF.Framework.RT.Core.IoProviders;
using MECF.Framework.RT.Core.IoProviders.Mitsubishis;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Xml;

namespace EFEMRT.Devices
{
    public class SuperMCProtocolPLC : IoProvider
    { 
        private string _ip = "127.0.0.1";
        private string _localIp = "127.0.0.1";
        private int _port = 6731;
        private int _socketId = 101;
        private int _stationId = 102;

        private byte[] _bufferIn;
        private byte[] _bufferOut;

        private MCProtocol.MC_COMMAND_HEADER _header;
        //private MCProtocol.MC_RESPONSE_HEADER _response;

        private MCProtocol.MC_BATCH_COMMAND _batchCommand;

        private MCSocket _socket;

        private int demandAiFrom;  //should be the same the offset in lstBuffers
        private int demandAiSize;
        private int demandAoFrom;  //should be the same the offset in lstBuffers
        private int demandAoSize;
        private bool inDemanding = false;

        private string aiStoragename = "R";
        private string aoStoragename = "R";
        private string diStoragename = "M";
        private string doStoragename = "M";
        private int perIoLength = 960;

        private int diStartOffset=0;
        private int doStartOffset=0;
        private int aiStartOffset=0;
        private int aoStartOffset=0;

        private Stopwatch stopwatchDi = new Stopwatch();
        private Stopwatch stopwatchDo = new Stopwatch();
        private Stopwatch stopwatchAi = new Stopwatch();
        private Stopwatch stopwatchAo = new Stopwatch();
        private int comunicationSpanDi;
        private int comunicationSpanDo;
        private int comunicationSpanAi;
        private int comunicationSpanAo;
        protected int comunicationSpanTotal;
        private Stopwatch stopwatchTotal = new Stopwatch();

        private List<IoBlockItem> _blockSectionsDemand;
       
        public override void Initialize(string module, string name, List<IoBlockItem> lstBuffers, IIoBuffer buffer, XmlElement nodeParameter, Dictionary<int, string> ioMappingPathFile)
        {
            Module = module;
            Name = name;

            _source = module + "." + name;

            _buffer = buffer;

            _nodeParameter = nodeParameter;

            _blockSections = lstBuffers;

            buffer.SetBufferBlock(_source, lstBuffers);
            buffer.SetIoMap(_source, ioMappingPathFile);

            SetParameter(nodeParameter);

            State = IoProviderStateEnum.Uninitialized;

            _thread = new PeriodicJob(50, OnTimer, name);



            //Module = module;
            //Name = name;

            //_source = module + "." + name;

            //_buffer = buffer;

            //_nodeParameter = nodeParameter;

            //SetParameter(nodeParameter);

            //if (demandAiSize != 0 || demandAoSize != 0)
            //{
            //    var lstBuffersnew = new List<IoBlockItem>();
            //    foreach (var bf in lstBuffers)
            //    {
            //        if (demandAiSize > 0 && bf.Type == IoType.AI)
            //        {
            //            var bfNew = new IoBlockItem()
            //            {
            //                Offset = demandAiFrom + demandAiSize,
            //                Size = bf.Size - demandAiSize,
            //                Type = bf.Type,
            //            };

            //            lstBuffersnew.Add(bfNew);
            //        }
            //        else if (demandAoSize > 0 && bf.Type == IoType.AO)
            //        {
            //            var bfNew = new IoBlockItem()
            //            {
            //                Offset = demandAoFrom + demandAoSize,
            //                Size = bf.Size - demandAoSize,
            //                Type = bf.Type,
            //            };

            //            lstBuffersnew.Add(bfNew);
            //        }
            //        else
            //            lstBuffersnew.Add(bf);
            //    }

            //    _blockSectionsDemand = lstBuffersnew;
            //}

            //_blockSections = lstBuffers;

            //buffer.SetBufferBlock(_source, lstBuffers);
            //buffer.SetIoMap(_source, ioMappingPathFile);



            //State = IoProviderStateEnum.Uninitialized;

            //_thread = new PeriodicJob(50, OnTimer, name);

            //DATA.Subscribe($"{Name}.ComunicationSpanTotal", () => comunicationSpanTotal);
            //DATA.Subscribe($"{Name}.ComunicationSpanDi", () => comunicationSpanDi);
            //DATA.Subscribe($"{Name}.ComunicationSpanDo", () => comunicationSpanDo);
            //DATA.Subscribe($"{Name}.ComunicationSpanAi", () => comunicationSpanAi);
            //DATA.Subscribe($"{Name}.ComunicationSpanAo", () => comunicationSpanAo);
        }

        protected override bool OnTimer()
        {
            if (State == IoProviderStateEnum.Uninitialized)
            {
                SetState(IoProviderStateEnum.Opening);
                Open();
            }

            if (State == IoProviderStateEnum.Opened)
            {
                try
                {
                    stopwatchTotal.Start();
                    foreach (var bufferSection in _blockSections)
                    {
                        if (bufferSection.Type == IoType.DI)
                        {
                            stopwatchDi.Start();
                            bool[] diBuffer = ReadDi(bufferSection.Offset, bufferSection.Size);
                            if (diBuffer != null)
                            {
                                _buffer.SetDiBuffer(_source, bufferSection.Offset, diBuffer);

                                //TraceArray(diBuffer);
                            }
                            stopwatchDi.Stop();
                        }
                        else if (bufferSection.Type == IoType.AI)
                        {
                            stopwatchAi.Start();
                            if (inDemanding)
                            {
                                short[] aiBuffer = ReadAi(bufferSection.Offset, bufferSection.Size);
                                if (aiBuffer != null)
                                {
                                    _buffer.SetAiBuffer(_source, bufferSection.Offset, aiBuffer);
                                }
                            }
                            else
                            {
                                if (_blockSectionsDemand != null)
                                {
                                    var section = _blockSectionsDemand.Find(x => x.Type == IoType.AI);
                                    if (section != null && demandAiSize > 0)
                                    {
                                        short[] aiBuffer = ReadAi(section.Offset, section.Size);
                                        if (aiBuffer != null)
                                        {
                                            _buffer.SetAiBuffer(_source, demandAiFrom, aiBuffer, demandAiSize);
                                        }
                                    }
                                }
                                else
                                {
                                    short[] aiBuffer = ReadAi(bufferSection.Offset, bufferSection.Size);
                                    if (aiBuffer != null)
                                    {
                                        _buffer.SetAiBuffer(_source, bufferSection.Offset, aiBuffer);
                                    }
                                }
                            }

                            stopwatchAi.Stop();
                        }
                    }

                    comunicationSpanDi = (int)stopwatchDi.ElapsedMilliseconds;
                    stopwatchDi.Reset();

                    comunicationSpanAi = (int)stopwatchAi.ElapsedMilliseconds;
                    stopwatchAi.Reset();

                    stopwatchAo.Start();
                    Dictionary<int, short[]> aos = _buffer.GetAoBuffer(_source);
                    if (aos != null)
                    {
                        if (inDemanding)
                        {
                            if (demandAoSize > 0)
                            {
                                foreach (var ao in aos)
                                {
                                    WriteAo(ao.Key, ao.Value);
                                }
                            }
                        }
                        else
                        {
                            foreach (var ao in aos)
                            {
                                if (ao.Key == demandAoFrom)
                                {
                                    short[] data = new short[ao.Value.Length - demandAoSize];
                                    Array.Copy(ao.Value, demandAoSize, data, 0, data.Length);
                                    WriteAo(demandAoFrom + demandAoSize, data);
                                }
                                else
                                    WriteAo(ao.Key, ao.Value);
                            }
                        }
                    }
                    stopwatchAo.Stop();
                    comunicationSpanAo = (int)stopwatchAo.ElapsedMilliseconds;
                    stopwatchAo.Reset();

                    stopwatchDo.Start();
                    Dictionary<int, bool[]> dos = _buffer.GetDoBuffer(_source);
                    if (dos != null)
                    {
                        foreach (var doo in dos)
                        {
                            WriteDo(doo.Key, doo.Value);
                        }
                    }

                    stopwatchDo.Stop();
                    comunicationSpanDo = (int)stopwatchDo.ElapsedMilliseconds;
                    stopwatchDo.Reset();

                    stopwatchTotal.Stop();
                    comunicationSpanTotal = (int)stopwatchTotal.ElapsedMilliseconds;
                    stopwatchTotal.Reset();
                }
                catch (Exception ex)
                {
                    LOG.Write($"{Name} {ex}");
                    //SetState(IoProviderStateEnum.Error);
                    Thread.Sleep(1000);
                    Close();
                    Open();
                }
            }

            _trigError.CLK = State == IoProviderStateEnum.Error;
            if (_trigError.Q)
            {
                EV.PostMessage(Module, EventEnum.DefaultAlarm, string.Format("{0} error", _source));
            }

            return true;
        }

        protected override void SetParameter(XmlElement nodeParameter)
        {
            string strIp = nodeParameter.GetAttribute("ip");
            _localIp = nodeParameter.GetAttribute("localIp");
            string strPort = nodeParameter.GetAttribute("port");
            string networkId = nodeParameter.GetAttribute("network_id");
            string stationId = nodeParameter.GetAttribute("station_id");
            aiStoragename = nodeParameter.GetAttribute("aiStoragename");
            aoStoragename = nodeParameter.GetAttribute("aoStoragename");
            diStoragename = nodeParameter.GetAttribute("diStoragename");
            doStoragename = nodeParameter.GetAttribute("doStoragename");
            int.TryParse(nodeParameter.GetAttribute("perIoLength"), out perIoLength);
            perIoLength = perIoLength == 0 ? 960 : perIoLength;

            int.TryParse(nodeParameter.GetAttribute("demandAiFrom"), out demandAiFrom);
            int.TryParse(nodeParameter.GetAttribute("demandAiSize"), out demandAiSize);
            int.TryParse(nodeParameter.GetAttribute("demandAoFrom"), out demandAoFrom);
            int.TryParse(nodeParameter.GetAttribute("demandAoSize"), out demandAoSize);

            if (nodeParameter.HasAttribute("diStartOffset"))
                int.TryParse(nodeParameter.GetAttribute("diStartOffset"), out diStartOffset);
            if (nodeParameter.HasAttribute("doStartOffset"))
                int.TryParse(nodeParameter.GetAttribute("doStartOffset"), out doStartOffset);


            _port = int.Parse(strPort);
            _ip = strIp;
            _socketId = int.Parse(networkId);
            _stationId = int.Parse(stationId);

            DATA.Subscribe($"{Name}.CommunicationStatus", () => _socket == null ? false : _socket.Connected);

            OP.Subscribe($"{Name}.Reconnect", (string cmd, object[] args) =>
            {
                Close();
                Open();
                return true;
            });
        }

        protected override void Open()
        {
            _socket = new MCSocket();

            _header = new MCProtocol.MC_COMMAND_HEADER()
            {
                ProtocolID = MCProtocol.MC_SUBHEADER_COMMAND_MESSAGE,
                NetworkID = (byte)_socketId,
                StationID = (byte)_stationId,
                RequestIONumber = MCProtocol.MC_REQUEST_MODULE_IO_NUMBER,
                RequestStationNumber = MCProtocol.MC_REQUEST_MODULE_STATION_NUMBER,
                RequestDataLen = 0,
                CPUMonitorTimer = (ushort)(MCProtocol.MC_CPU_MONITOR_TIMER * 2),
            };

            _batchCommand = new MCProtocol.MC_BATCH_COMMAND()
            {
                Command = MCProtocol.MC_COMMAND_BATCH_READ,
                DeviceCode = MCProtocol.MC_DEVICE_CODE_DATA_REGISTER_WORD,
                DevicePoints = 0,
                HeadAddr = 0,
                Reserved = 0,
                SubCommand = MCProtocol.MC_SUBCOMMAND_WORD_UNITS,
            };

            _bufferOut = new byte[2048];
            _bufferIn = new byte[2048];

            _socket.Open(_ip, _port, _localIp);

            SetState(IoProviderStateEnum.Opened);
        }

        protected override void Close()
        {
            _socket.Close();
            SetState(IoProviderStateEnum.Closed);
        }

        protected override bool[] ReadDi(int _offset, int size)
        {
            int offset = _offset + diStartOffset;
            bool[] buff = new bool[size];

            int count = size / perIoLength;
            if (count < 1)
            {
                bool[] dibuffer = DoReadDi(offset, size);
                if (dibuffer != null)
                    Array.Copy(dibuffer, 0, buff, 0, dibuffer.Length);
            }
            else
            {
                bool[] dibuffer;
                for (int i = 0; i < count; i++)
                {
                    dibuffer = DoReadDi(i * perIoLength + offset, perIoLength);
                    if (dibuffer != null)
                        Array.Copy(dibuffer, 0, buff, i * perIoLength, dibuffer.Length);
                }

                if (size % perIoLength != 0)
                {
                    dibuffer = DoReadDi(offset + perIoLength * count, size % perIoLength);
                    if (dibuffer != null)
                        Array.Copy(dibuffer, 0, buff, size - size % perIoLength, dibuffer.Length);
                }
            }

            return buff;
        }

        public bool SetDemandReadWrite()
        {
            inDemanding = true;
            Thread.Sleep(500);

            inDemanding = false;

            return true;
        }

        protected override short[] ReadAi(int offset, int size)
        {
            short[] buff = new short[size];

            int count = size / perIoLength;
            if (count < 1)
            {
                short[] aibuffer = DoReadAi(offset, size);
                if (aibuffer != null)
                    Array.Copy(aibuffer, 0, buff, 0, aibuffer.Length);
            }
            else
            {
                short[] aibuffer;
                for (int i = 0; i < count; i++)
                {
                    aibuffer = DoReadAi(i * perIoLength + offset, perIoLength);
                    if (aibuffer != null)
                        Array.Copy(aibuffer, 0, buff, i * perIoLength, aibuffer.Length);
                }

                if (size % perIoLength != 0)
                {
                    aibuffer = DoReadAi(offset + perIoLength * count, size % perIoLength);
                    if (aibuffer != null)
                        Array.Copy(aibuffer, 0, buff, size - size % perIoLength, aibuffer.Length);
                }
            }

            return buff;
        }

        protected override void WriteDo(int _offset, bool[] data)
        {
            int offset = _offset + doStartOffset;
            bool[] databuffer = new bool[perIoLength];
            int count = data.Length / perIoLength;
            if (count < 1)
            {
                Array.Copy(data, 0, databuffer, 0, data.Length);
                Array.Resize(ref databuffer, data.Length);

                DoWriteDo(offset, databuffer);
            }
            else
            {
                for (int i = 0; i < count; i++)
                {
                    Array.Copy(data, i * perIoLength, databuffer, 0, databuffer.Length);
                    DoWriteDo(offset + perIoLength * i, databuffer);
                }

                if (data.Length % perIoLength != 0)
                {
                    Array.Copy(data, perIoLength * count, databuffer, 0, data.Length % perIoLength);
                    Array.Resize(ref databuffer, data.Length % perIoLength);
                    DoWriteDo(offset + perIoLength * count, databuffer);
                }
            }
        }

        protected override void WriteAo(int offset, short[] data)
        {
            short[] databuffer = new short[perIoLength];

            int count = data.Length / perIoLength;
            if (count < 1)
            {
                Array.Copy(data, 0, databuffer, 0, data.Length);
                Array.Resize(ref databuffer, data.Length);

                DoWriteAo(offset, databuffer);
            }
            else
            {
                for (int i = 0; i < count; i++)
                {
                    Array.Copy(data, i * perIoLength, databuffer, 0, databuffer.Length);
                    DoWriteAo(offset + perIoLength * i, databuffer, data.Length, i);
                }

                if (data.Length % perIoLength != 0)
                {
                    Array.Copy(data, perIoLength * count, databuffer, 0, data.Length % perIoLength);
                    Array.Resize(ref databuffer, data.Length % perIoLength);
                    DoWriteAo(offset + perIoLength * count, databuffer, data.Length);
                }
            }
        }

        private bool WriteData(byte[] data, int length)
        {
            return _socket.Write(data, length);
        }

        private int ReceiveData(byte[] data)
        {
            return _socket.Read(data);
        }

        private short[] DoReadAi(int offset, int size)
        {
            _batchCommand.DeviceCode = (byte)MelsecElement.ChooseMelsecElement(aiStoragename).m_nBinCode;

            _batchCommand.Command = MCProtocol.MC_COMMAND_BATCH_READ;
            _batchCommand.SubCommand = MCProtocol.MC_SUBCOMMAND_WORD_UNITS;

            _batchCommand.HeadAddr = (ushort)(offset & 0xFFFF);
            _batchCommand.Reserved = (byte)(offset >> 16);

            _batchCommand.DevicePoints = (ushort)size;

            _header.RequestDataLen = (ushort)(MCProtocol.MC_BATCH_COMMAND_SIZE + MCProtocol.JUNK_SIZE);

            byte[] buffer = MCProtocol.Struct2Bytes(_header);
            byte[] command = MCProtocol.Struct2Bytes(_batchCommand);

            Array.Copy(buffer, 0, _bufferOut, 0, buffer.Length);
            Array.Copy(command, 0, _bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE, command.Length);


            if (!WriteData(_bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE + MCProtocol.MC_BATCH_COMMAND_SIZE))
            {
                return null;
            }

            //receiveLen < MCProtocol.MC_QHEADER_RESPONSE_SIZE means no data in bufferIn
            int receiveLen = ReceiveData(_bufferIn);
            int dataLength = receiveLen - MCProtocol.MC_QHEADER_RESPONSE_SIZE;
            if (dataLength < 0)
            {
                return null;
            }


            MCProtocol.MC_RESPONSE_HEADER responseHeader =
                MCProtocol.ToStruct<MCProtocol.MC_RESPONSE_HEADER>(_bufferIn);

            if (responseHeader.ProtocolId != 0x00d0 && responseHeader.CompleteCode != MCProtocol.MC_COMPLETE_CODE_SUCCESS)
            {
                return null;
            }

            short[] datas = new short[size];
            byte[] dataBuff = new byte[dataLength];
            Array.Copy(_bufferIn, MCProtocol.MC_QHEADER_RESPONSE_SIZE, dataBuff, 0, dataBuff.Length);
            for (int i = 0, dataBuffIndex = 0; i < datas.Length & dataBuffIndex < dataBuff.Length; i++, dataBuffIndex += 2)
            {
                datas[i] = (short)BitConverter.ToUInt16(dataBuff, 0 + i * 2);
            }

            return datas;

        }

        private void DoWriteAo(int offset, short[] data, int total = 0, int count = 100)
        {
            ushort[] uData = new ushort[data.Length];
            uData = data.Select(x => (ushort)x).ToArray();

            _batchCommand.DeviceCode = (byte)MelsecElement.ChooseMelsecElement(aoStoragename).m_nBinCode;

            _batchCommand.Command = MCProtocol.MC_COMMAND_BATCH_WRITE;
            _batchCommand.SubCommand = MCProtocol.MC_SUBCOMMAND_WORD_UNITS;

            _batchCommand.HeadAddr = (ushort)(offset & 0xFFFF);
            _batchCommand.Reserved = (byte)(offset >> 16);

            _batchCommand.DevicePoints = (ushort)data.Length;

            _header.RequestDataLen = (ushort)(MCProtocol.MC_BATCH_COMMAND_SIZE + MCProtocol.JUNK_SIZE + MCProtocol.ShortSize * data.Length);

            byte[] header = MCProtocol.Struct2Bytes(_header);
            byte[] command = MCProtocol.Struct2Bytes(_batchCommand);
            byte[] byteData = MCProtocol.Ushort2Byte(uData);

            Array.Copy(header, 0, _bufferOut, 0, header.Length);
            Array.Copy(command, 0, _bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE, command.Length);
            Array.Copy(byteData, 0, _bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE + MCProtocol.MC_BATCH_COMMAND_SIZE, byteData.Length);

            if (!WriteData(_bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE + MCProtocol.MC_BATCH_COMMAND_SIZE + MCProtocol.ShortSize * data.Length))
            {
                return;
            }

            if (ReceiveData(_bufferIn) <= 0)
            {
                return;
            }

            MCProtocol.MC_RESPONSE_HEADER responseHeader =
                MCProtocol.ToStruct<MCProtocol.MC_RESPONSE_HEADER>(_bufferIn);

            if (responseHeader.ProtocolId != 0x00d0 && responseHeader.CompleteCode != MCProtocol.MC_COMPLETE_CODE_SUCCESS)
            {
                LOG.Write("  failed with code," + responseHeader.CompleteCode);
                return;
            }
        }

        private bool[] DoReadDi(int offset, int size)
        {
            _batchCommand.DeviceCode = (byte)MelsecElement.ChooseMelsecElement(diStoragename).m_nBinCode;

            _batchCommand.Command = MCProtocol.MC_COMMAND_BATCH_READ;
            _batchCommand.SubCommand = MCProtocol.MC_SUBCOMMAND_WORD_UNITS;

            _batchCommand.HeadAddr = (ushort)(offset & 0xFFFF);
            _batchCommand.Reserved = (byte)(offset >> 16);

            _batchCommand.DevicePoints = (ushort)(size % 16 > 0 ? size / 16 + 1 : size / 16);

            _header.RequestDataLen = (ushort)(MCProtocol.MC_BATCH_COMMAND_SIZE + MCProtocol.JUNK_SIZE);

            byte[] buffer = MCProtocol.Struct2Bytes(_header);
            byte[] command = MCProtocol.Struct2Bytes(_batchCommand);

            Array.Copy(buffer, 0, _bufferOut, 0, buffer.Length);
            Array.Copy(command, 0, _bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE, command.Length);

            if (!WriteData(_bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE + MCProtocol.MC_BATCH_COMMAND_SIZE))
            {
                return null;
            }

            //receiveLen < MCProtocol.MC_QHEADER_RESPONSE_SIZE means no data in bufferIn
            int receiveLen = ReceiveData(_bufferIn);
            int dataLength = receiveLen - MCProtocol.MC_QHEADER_RESPONSE_SIZE;
            if (dataLength < 0)
            {
                return null;
            }

            MCProtocol.MC_RESPONSE_HEADER responseHeader =
                MCProtocol.ToStruct<MCProtocol.MC_RESPONSE_HEADER>(_bufferIn);

            if (responseHeader.ProtocolId != 0x00d0 && responseHeader.CompleteCode != MCProtocol.MC_COMPLETE_CODE_SUCCESS)
            {
                return null;
            }

            bool[] datas = new bool[dataLength * 8];
            byte[] dataBuff = new byte[dataLength];
            Array.Copy(_bufferIn, MCProtocol.MC_QHEADER_RESPONSE_SIZE, dataBuff, 0, dataBuff.Length);
            var bitArray = new BitArray(dataBuff);
            for (int i = 0; i < datas.Length; i++)
            {
                datas[i] = bitArray.Get(i);
            }

            return datas.Select(x => x).Take(size).ToArray();
        }

        private void DoWriteDo(int offset, bool[] data)
        {
            _batchCommand.DeviceCode = (byte)MelsecElement.ChooseMelsecElement(doStoragename).m_nBinCode;

            _batchCommand.Command = MCProtocol.MC_COMMAND_BATCH_WRITE;
            _batchCommand.SubCommand = MCProtocol.MC_SUBCOMMAND_WORD_UNITS;

            _batchCommand.HeadAddr = (ushort)(offset & 0xFFFF);
            _batchCommand.Reserved = (byte)(offset >> 16);

            _batchCommand.DevicePoints = (ushort)(data.Length % 16 > 0 ? data.Length / 16 + 1 : data.Length / 16);

            _header.RequestDataLen = (ushort)(MCProtocol.MC_BATCH_COMMAND_SIZE + MCProtocol.JUNK_SIZE + _batchCommand.DevicePoints * 2);


            //one word = two bytes , so _batchCommand.DevicePoints * 2
            byte[] byteData = new byte[_batchCommand.DevicePoints * 2];
            for (int i = 0, byteDataIndex = 0; i < data.Length & byteDataIndex < byteData.Length; i += 8, byteDataIndex++)
            {
                byteData[byteDataIndex] += (byte)(data[i] ? 1 : 0);
                byteData[byteDataIndex] += (byte)(i + 1 < data.Length && data[i + 1] ? 1 << 1 : 0);
                byteData[byteDataIndex] += (byte)(i + 2 < data.Length && data[i + 2] ? 1 << 2 : 0);
                byteData[byteDataIndex] += (byte)(i + 3 < data.Length && data[i + 3] ? 1 << 3 : 0);
                byteData[byteDataIndex] += (byte)(i + 4 < data.Length && data[i + 4] ? 1 << 4 : 0);
                byteData[byteDataIndex] += (byte)(i + 5 < data.Length && data[i + 5] ? 1 << 5 : 0);
                byteData[byteDataIndex] += (byte)(i + 6 < data.Length && data[i + 6] ? 1 << 6 : 0);
                byteData[byteDataIndex] += (byte)(i + 7 < data.Length && data[i + 7] ? 1 << 7 : 0);
            }

            byte[] header = MCProtocol.Struct2Bytes(_header);
            byte[] command = MCProtocol.Struct2Bytes(_batchCommand);

            Array.Copy(header, 0, _bufferOut, 0, header.Length);
            Array.Copy(command, 0, _bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE, command.Length);
            Array.Copy(byteData, 0, _bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE + MCProtocol.MC_BATCH_COMMAND_SIZE, byteData.Length);

            if (!WriteData(_bufferOut, MCProtocol.MC_QHEADER_COMMAND_SIZE + MCProtocol.MC_BATCH_COMMAND_SIZE + byteData.Length))
            {
                return;
            }

            if (ReceiveData(_bufferIn) <= 0)
            {
                return;
            }

            MCProtocol.MC_RESPONSE_HEADER responseHeader =
                MCProtocol.ToStruct<MCProtocol.MC_RESPONSE_HEADER>(_bufferIn);

            if (responseHeader.CompleteCode != MCProtocol.MC_COMPLETE_CODE_SUCCESS)
            {
                LOG.Write("Write PLC failed with code," + responseHeader.CompleteCode);
                return;
            }
        }
    }

    class MCSocket
    {
        private int m_nPort;
        private string m_strAddress;
        private Socket m_socket;
        private int m_nTimeOut;

        public MCSocket()
        {
            m_nTimeOut = 30000;
        }

        ~MCSocket()
        {
        }

        public bool Connected
        {
            get { return (m_socket != null && m_socket.Connected); }
        }

        public bool Open(string strAddress, int nPort, string strLocalAddress)
        {
            if (Connected)
                return true;

            Close();

            m_strAddress = strAddress;
            m_nPort = nPort;

            m_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            try
            {
                // Bind to specific local endpoint
                IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 0);
                m_socket.Bind(localEndPoint);

                IPAddress ipAddress = IPAddress.Parse(m_strAddress);
                IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, m_nPort);
                //m_socket = new Socket(ipEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
                m_socket.SendTimeout = m_nTimeOut;
                m_socket.ReceiveTimeout = m_nTimeOut;
                m_socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
                m_socket.Connect(ipEndPoint);
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
                return false;
            }

            return true;
        }

        public bool Close()
        {
            if (m_socket == null) return true;

            try
            {
                m_socket.Shutdown(SocketShutdown.Both);
                m_socket.Close();
                m_socket = null;
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
                return false;
            }

            return true;
        }

        public int Read(byte[] buffer)
        {
            int ret = -1;
            if (!Connected) return ret;

            return m_socket.Receive(buffer);
            //try
            //{
            //    ret = m_socket.Receive(buffer);
            //}
            //catch (Exception ex)
            //{
            //    LOG.Write(ex);
            //}

            //return ret;
        }

        public bool Read(byte[] buffer, int length)
        {
            if (!Connected) return false;

            try
            {
                m_socket.Receive(buffer, SocketFlags.None);
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
                return false;
            }

            return true;
        }

        public bool Write(byte[] buffer)
        {
            if (!Connected) return false;

            try
            {
                m_socket.Send(buffer, SocketFlags.None);
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
                return false;
            }

            return true;
        }

        public bool Write(byte[] buffer, int length)
        {
            if (!Connected) return false;

            return m_socket.Send(buffer, length, SocketFlags.None) >= 0;
            //try
            //{
            //    m_socket.Send(buffer, length, SocketFlags.None);
            //}
            //catch (Exception ex)
            //{
            //    LOG.Write(ex);
            //    return false;
            //}

            //return true;
        }
    }
}