/// <summary>
/// 从Modbus服务器批量读取寄存器的信息，需要指定起始地址，读取长度
/// </summary>
/// <param name="address">起始地址，格式为"1234"，或者是带功能码格式x=3;1234</param>
/// <param name="length">读取的数量</param>
/// <returns>带有成功标志的字节信息</returns>
/// <remarks>
/// 富地址格式，支持携带站号信息，功能码信息，具体参照类的示例代码
/// </remarks>
/// <example>
/// 此处演示批量读取的示例
/// <code lang="cs" source="Communication_Net45.Test\Documentation\Samples\Modbus\Modbus.cs" region="ReadExample1" title="Read示例" />
/// </example>
public override OperateResult <byte[]> Read(string address, ushort length)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisAddress(address, isAddressStartWithZero, ModbusInfo.ReadRegister);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
List <byte> lists = new List <byte>();
ushort alreadyFinished = 0;
while (alreadyFinished < length)
{
ushort lengthTmp = (ushort)Math.Min((length - alreadyFinished), 120);
OperateResult <byte[]> read = ReadModBusBase(analysis.Content.AddressAdd(alreadyFinished), lengthTmp);
if (!read.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(read));
}
lists.AddRange(read.Content);
alreadyFinished += lengthTmp;
}
return(OperateResult.CreateSuccessResult(lists.ToArray()));
}
/// <summary>
/// 生成一个读取寄存器的指令头
/// </summary>
/// <param name="address">地址</param>
/// <param name="length">长度</param>
/// <returns>包含结果对象的报文</returns>
private OperateResult <byte[]> BuildReadRegisterCommand(ModbusAddress address, ushort length)
{
// 获取消息号
ushort messageId = (ushort)softIncrementCount.GetCurrentValue();
// 生成最终tcp指令
byte[] buffer = ModbusInfo.PackCommandToTcp(address.CreateReadRegister(station, length), messageId);
return(OperateResult.CreateSuccessResult(buffer));
}
/// <summary>
/// 生成批量写入寄存器的报文信息
/// </summary>
/// <param name="address">地址</param>
/// <param name="values">实际值</param>
/// <returns>包含结果对象的报文</returns>
public OperateResult <byte[]> BuildWriteRegisterCommand(string address, byte[] values)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisAddress(address, isAddressStartWithZero, ModbusInfo.WriteRegister);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
// 生成最终rtu指令
byte[] buffer = ModbusInfo.PackCommandToRtu(analysis.Content.CreateWriteRegister(station, values));
return(OperateResult.CreateSuccessResult(buffer));
}
/// <summary>
/// 生成一个读取离散信息的指令头
/// </summary>
/// <param name="address">地址</param>
/// <param name="length">长度</param>
/// <returns>携带有命令字节</returns>
public OperateResult <byte[]> BuildReadDiscreteCommand(string address, ushort length)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisAddress(address, isAddressStartWithZero, ModbusInfo.ReadDiscrete);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
// 生成最终tcp指令
byte[] buffer = ModbusInfo.PackCommandToRtu(analysis.Content.CreateReadDiscrete(station, length));
return(OperateResult.CreateSuccessResult(buffer));
}
/// <summary>
/// 检查当前的Modbus-Tcp响应是否是正确的
/// </summary>
/// <param name="send">发送的数据信息</param>
/// <returns>带是否成功的结果数据</returns>
private OperateResult <byte[]> CheckModbusTcpResponse(byte[] send)
{
OperateResult <byte[]> resultBytes = ReadFromCoreServer(send);
if (resultBytes.IsSuccess)
{
if ((send[7] + 0x80) == resultBytes.Content[7])
{
// 发生了错误
resultBytes.IsSuccess = false;
resultBytes.Message = ModbusInfo.GetDescriptionByErrorCode(resultBytes.Content[8]);
resultBytes.ErrorCode = resultBytes.Content[8];
}
}
return(resultBytes);
}
/// <summary>
/// 生成批量写入寄存器的报文信息
/// </summary>
/// <param name="address">地址</param>
/// <param name="values">实际值</param>
/// <returns>包含结果对象的报文</returns>
public OperateResult <byte[]> BuildWriteRegisterCommand(string address, byte[] values)
{
// 解析富地址
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisAddress(address, isAddressStartWithZero, ModbusInfo.WriteRegister);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
// 获取消息号
ushort messageId = (ushort)softIncrementCount.GetCurrentValue();
// 生成最终tcp指令
byte[] buffer = ModbusInfo.PackCommandToTcp(analysis.Content.CreateWriteRegister(station, values), messageId);
return(OperateResult.CreateSuccessResult(buffer));
}
private void SocketAsyncCallBack(IAsyncResult ar)
{
if (ar.AsyncState is AppSession session)
{
try
{
int receiveCount = session.WorkSocket.EndReceive(ar);
ModbusTcpMessage mdMessage = new ModbusTcpMessage();
OperateResult <byte[]> read1 = ReceiveByMessage(session.WorkSocket, 5000, mdMessage);
if (!read1.IsSuccess)
{
LogNet?.WriteDebug(ToString(), string.Format(StringResources.Language.ClientOfflineInfo, session.IpEndPoint));
RemoveClient(session);
return;
}
;
ushort id = (ushort)(read1.Content[0] * 256 + read1.Content[1]);
byte[] back = ModbusInfo.PackCommandToTcp(ReadFromModbusCore(SoftBasic.BytesArrayRemoveBegin(read1.Content, 6)), id);
if (back != null)
{
session.WorkSocket.Send(back);
}
else
{
session.WorkSocket.Close();
RemoveClient(session);
return;
}
RaiseDataReceived(read1.Content);
session.WorkSocket.BeginReceive(new byte[0], 0, 0, SocketFlags.None, new AsyncCallback(SocketAsyncCallBack), session);
}
catch
{
// 关闭连接，记录日志
session.WorkSocket?.Close();
LogNet?.WriteDebug(ToString(), string.Format(StringResources.Language.ClientOfflineInfo, session.IpEndPoint));
RemoveClient(session);
return;
}
}
}
/// <summary>
/// 检查当前的Modbus-Ascii响应是否是正确的
/// </summary>
/// <param name="send">发送的数据信息</param>
/// <returns>带是否成功的结果数据</returns>
protected override OperateResult<byte[]> CheckModbusTcpResponse( byte[] send )
{
// 转ascii
byte[] modbus_ascii = ModbusInfo.TransRtuToAsciiPackCommand( send );
// 核心交互
OperateResult<byte[]> result = ReadBase( modbus_ascii );
if (!result.IsSuccess) return result;
// 还原modbus报文
OperateResult<byte[]> modbus_core = ModbusInfo.TransAsciiPackCommandToRtu( result.Content );
if (!modbus_core.IsSuccess) return modbus_core;
// 发生了错误
if ((send[1] + 0x80) == modbus_core.Content[1]) return new OperateResult<byte[]>( modbus_core.Content[2], ModbusInfo.GetDescriptionByErrorCode( modbus_core.Content[2] ) );
// 成功的消息
return OperateResult.CreateSuccessResult( modbus_core.Content );
}
/// <summary>
/// 读取自定义的寄存器的值。按照字为单位
/// </summary>
/// <param name="address">起始地址，示例："100"，"x=4;100"</param>
/// <param name="length">数据长度</param>
/// <exception cref="IndexOutOfRangeException"></exception>
/// <returns>byte数组值</returns>
public override OperateResult <byte[]> Read(string address, ushort length)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisAddress(address, true, ModbusInfo.ReadRegister);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
if (analysis.Content.Function == ModbusInfo.ReadRegister)
{
return(OperateResult.CreateSuccessResult(registerBuffer.GetBytes(analysis.Content.Address * 2, length * 2)));
}
else if (analysis.Content.Function == ModbusInfo.ReadInputRegister)
{
return(OperateResult.CreateSuccessResult(inputRegisterBuffer.GetBytes(analysis.Content.Address * 2, length * 2)));
}
else
{
return(new OperateResult <byte[]>(StringResources.Language.NotSupportedDataType));
}
}
/// <summary>
/// 检查当前的Modbus-Rtu响应是否是正确的
/// </summary>
/// <param name="send">发送的数据信息</param>
/// <returns>带是否成功的结果数据</returns>
protected virtual OperateResult <byte[]> CheckModbusTcpResponse(byte[] send)
{
// 核心交互
OperateResult <byte[]> result = ReadBase(send);
if (!result.IsSuccess)
{
return(result);
}
// 长度校验
if (result.Content.Length < 5)
{
return(new OperateResult <byte[]>(StringResources.Language.ReceiveDataLengthTooShort + "5"));
}
// 检查crc
if (!SoftCRC16.CheckCRC16(result.Content))
{
return(new OperateResult <byte[]>(StringResources.Language.ModbusCRCCheckFailed +
SoftBasic.ByteToHexString(result.Content, ' ')));
}
// 发生了错误
if ((send[1] + 0x80) == result.Content[1])
{
return(new OperateResult <byte[]>(result.Content[2], ModbusInfo.GetDescriptionByErrorCode(result.Content[2])));
}
if (send[1] != result.Content[1])
{
return(new OperateResult <byte[]>(result.Content[1], $"Receive Command Check Failed: "));
}
// 移除CRC校验
byte[] buffer = new byte[result.Content.Length - 2];
Array.Copy(result.Content, 0, buffer, 0, buffer.Length);
return(OperateResult.CreateSuccessResult(buffer));
}
/// <summary>
/// 接收到串口数据的时候触发
/// </summary>
/// <param name="sender">串口对象</param>
/// <param name="e">消息</param>
private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
int rCount = 0;
byte[] buffer = new byte[1024];
byte[] receive = null;
while (true)
{
System.Threading.Thread.Sleep(20); // 此处做个微小的延时，等待数据接收完成
int count = serialPort.Read(buffer, rCount, serialPort.BytesToRead);
rCount += count;
if (count == 0)
{
break;
}
receive = new byte[rCount];
Array.Copy(buffer, 0, receive, 0, count);
}
if (receive == null)
{
return;
}
if (receive.Length < 3)
{
LogNet?.WriteError(ToString(), $"Uknown Data：" + SoftBasic.ByteToHexString(receive, ' '));
return;
}
if (Serial.SoftCRC16.CheckCRC16(receive))
{
byte[] modbusCore = SoftBasic.BytesArrayRemoveLast(receive, 2);
if (!CheckModbusMessageLegal(modbusCore))
{
// 指令长度验证错误，关闭网络连接
LogNet?.WriteError(ToString(), $"Receive Nosense Modbus-rtu : " + SoftBasic.ByteToHexString(receive, ' '));
return;
}
// 验证站号是否一致
if (station >= 0 && station != modbusCore[0])
{
LogNet?.WriteError(ToString(), $"Station not match Modbus-rtu : " + SoftBasic.ByteToHexString(receive, ' '));
return;
}
// LogNet?.WriteError( ToString( ), $"Success：" + BasicFramework.SoftBasic.ByteToHexString( receive, ' ' ) );
// 需要回发消息
byte[] copy = ModbusInfo.PackCommandToRtu(ReadFromModbusCore(modbusCore));
serialPort.Write(copy, 0, copy.Length);
if (IsStarted)
{
RaiseDataReceived(receive);
}
}
else
{
LogNet?.WriteWarn("CRC Check Failed : " + SoftBasic.ByteToHexString(receive, ' '));
}
}
/// <summary>
/// 生成一个读取寄存器的指令头
/// </summary>
/// <param name="address">地址</param>
/// <param name="length">长度</param>
/// <returns>携带有命令字节</returns>
private OperateResult <byte[]> BuildReadRegisterCommand(ModbusAddress address, ushort length)
{
// 生成最终rtu指令
byte[] buffer = ModbusInfo.PackCommandToRtu(address.CreateReadRegister(station, length));
return(OperateResult.CreateSuccessResult(buffer));
}
