/// <summary>
/// 生成一个读取线圈的指令头
/// </summary>
/// <param name="address">地址</param>
/// <param name="count">长度</param>
/// <returns>携带有命令字节</returns>
private OperateResult <byte[]> BuildReadCoilCommand(string address, ushort count)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisReadAddress(address, isAddressStartWithZero);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
// 生成最终tcp指令
byte[] buffer = ModbusInfo.PackCommandToRtu(analysis.Content.CreateReadCoils(station, count));
return(OperateResult.CreateSuccessResult(buffer));
}
private OperateResult <byte[]> BuildWriteRegisterCommand(string address, byte[] values)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisReadAddress(address, isAddressStartWithZero);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
// 生成最终tcp指令
byte[] buffer = ModbusInfo.PackCommandToRtu(analysis.Content.CreateWriteRegister(station, values));
return(OperateResult.CreateSuccessResult(buffer));
}
/// <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>
public OperateResult <byte[]> BuildReadRegisterCommand(string address, ushort length)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisReadAddress(address, isAddressStartWithZero);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
// 生成最终rtu指令
byte[] buffer = ModbusInfo.PackCommandToRtu(analysis.Content.CreateReadRegister(station, length));
return(OperateResult.CreateSuccessResult(buffer));
}
/// <summary>
/// 生成批量写入单个线圈的报文信息
/// </summary>
/// <param name="address">地址</param>
/// <param name="values">实际数据值</param>
/// <returns>包含结果对象的报文</returns>
public OperateResult <byte[]> BuildWriteCoilCommand(string address, bool[] values)
{
OperateResult <ModbusAddress> analysis = ModbusInfo.AnalysisAddress(address, isAddressStartWithZero, ModbusInfo.WriteCoil);
if (!analysis.IsSuccess)
{
return(OperateResult.CreateFailedResult <byte[]>(analysis));
}
// 生成最终rtu指令
byte[] buffer = ModbusInfo.PackCommandToRtu(analysis.Content.CreateWriteCoil(station, values));
return(OperateResult.CreateSuccessResult(buffer));
}
/// <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tcp指令
byte[] buffer = ModbusInfo.PackCommandToRtu(address.CreateReadRegister(station, 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, ' '));
}
}
