Esempio n. 1
0
        private void timerOut_Tick(object sender, EventArgs e)
        {
            lock (_timerCheck)
            {
                var result = CheckData(_bytesReadArray);
                switch (result.Status)
                {
                case ModBusStatus.PresetMultipleRegistersOK:
                case ModBusStatus.ReadHoldingRegistersOK:
                case ModBusStatus.CustomFunctionOk:
                    _waitResponse = false;
                    ReceiveCounter++;
                    _timerCheck.Stop();
                    RaisePacketDetected(_bytesReadArray);
                    _eventArgument = result;
                    OnExchangeEnd();
                    break;

                default:
                    ErrorCounter++;
                    if (!CheckRepeat())
                    {
                        _eventArgument = new ModBusEventArg()
                        {
                            Status = result.Status
                        };
                        OnExchangeEnd();
                    }
                    break;
                }
            }
        }
Esempio n. 2
0
        /// <summary>
        /// проверяем полученные данные
        /// </summary>
        private ModBusEventArg CheckData(byte[] buffer)
        {
            if (buffer == null || buffer.Length == 0)
            {
                return(new ModBusEventArg {
                    Status = ModBusStatus.TimeOutError
                });
            }

            if (buffer.Length <= 2)
            {
                return(new ModBusEventArg {
                    Status = ModBusStatus.UnknowPacket
                });
            }

            if (buffer[0] != _addressSlave)
            {
                return(new ModBusEventArg {
                    Status = ModBusStatus.AddressSlaveError
                });
            }
            var function = buffer[1] & ~0x80;
            var error    = (buffer[1] & 0x80) == 0x80;

            if (_requestFunction != function)
            {
                return(new ModBusEventArg {
                    Status = ModBusStatus.InvalidFunction
                });
            }

            if (_endingSymbolEnable && buffer[buffer.Length - 1] != EndingSymbol)
            {
                return(new ModBusEventArg {
                    Status = ModBusStatus.NoEndingSymbol
                });
            }
            if (!CRC.CheckCRC(buffer, 0, buffer.Length - (_endingSymbolEnable ? 3 : 2), buffer, buffer.Length - (_endingSymbolEnable ? 3 : 2)))
            {
                return(new ModBusEventArg {
                    Status = ModBusStatus.CRCError
                });
            }

            if (error)
            {
                return(new ModBusEventArg
                {
                    Status = ModBusStatus.FunctionError,
                    Function = buffer[1],
                    data = new short[] { buffer[2] },
                });
            }
            //			RecieveCounter++;
            var ea = new ModBusEventArg
            {
                Function = buffer[1]
            };

            // Определяем тип функции
            switch (function)
            {
            // Read Holding Registers
            case 3:
                ea.data = new short[buffer[2] / 2];
                if (ea.Data.Length == _waitRegs)
                {
                    ea.Status = ModBusStatus.ReadHoldingRegistersOK;
                }
                else
                {
                    ea.Status = ModBusStatus.InvalidResponse;
                }

                int i = 0;
                while (i != ea.data.Length)
                {
                    ea.data[i]  = (short)(buffer[i * 2 + 3] << 8);
                    ea.data[i] += buffer[i * 2 + 1 + 3];
                    i++;
                }

                break;

            // Preset Multiple Registers
            case 0x10:
                ea.data   = new short[0];
                ea.Status = ModBusStatus.PresetMultipleRegistersOK;
                break;

            default:
                ea.data   = new short[buffer[2] / 2];
                ea.Status = ModBusStatus.CustomFunctionOk;
                i         = 0;
                while (i != ea.data.Length)
                {
                    ea.data[i]  = (short)(buffer[i * 2 + 3] << 8);
                    ea.data[i] += buffer[i * 2 + 1 + 3];
                    i++;
                }

                break;
            }
            return(ea);
        }
Esempio n. 3
0
        private void timerCheck_Tick(object sender, EventArgs e)
        {
            lock (_timerCheck)
            {
                try
                {
                    var count = _serialPort.BytesToRead;
                    if (count != 0)
                    {
                        if (_bytesReadArray == null || _bytesReadArray.Length == 0)
                        {
                            _bytesReadArray = new byte[count];
                            _serialPort.Read(_bytesReadArray, 0, count);
                        }
                        else
                        {
                            var bytesArray = new byte[count];
                            _serialPort.Read(bytesArray, 0, count);
                            var oldLength = _bytesReadArray.Length;
                            Array.Resize(ref _bytesReadArray, _bytesReadArray.Length + count);
                            Array.Copy(bytesArray, 0, _bytesReadArray, oldLength, count);
                        }

                        var result = CheckData(_bytesReadArray);
                        _timerOut.Stop();
                        switch (result.Status)
                        {
                        case ModBusStatus.PresetMultipleRegistersOK:
                        case ModBusStatus.ReadHoldingRegistersOK:
                        case ModBusStatus.CustomFunctionOk:

                            _waitResponse = false;
                            ReceiveCounter++;
                            RaisePacketDetected(_bytesReadArray);
                            _eventArgument = result;
                            OnExchangeEnd();
                            break;

                        case ModBusStatus.CRCError:
                        case ModBusStatus.UnknowPacket:
                        case ModBusStatus.None:
                        case ModBusStatus.NoEndingSymbol:
                        case ModBusStatus.TimeOutError:
                            _timerCheck.Start();
                            _timerOut.Reset();
                            break;

                        default:
                            ErrorCounter++;
                            RaisePacketDetected(_bytesReadArray);
                            if (!CheckRepeat())
                            {
                                _waitResponse  = false;
                                _eventArgument = result;
                                OnExchangeEnd();
                            }
                            break;
                        }
                        return;
                    }
                }
                catch (InvalidOperationException exc)
                {
                    if (CatchSerialException(exc))
                    {
                        return;
                    }
                }
                _timerCheck.Start();
            }
        }