private byte[] createRespondMessage()
{
int numberOfPoints = 0;
int bytesToSend = 0;
int startAddress = 0;
numberOfPoints = (readData[4] << 8) | readData[5];
bytesToSend = 2 * numberOfPoints + 5;
byte[] respondMessage = new byte[bytesToSend];
respondMessage[0] = _slaveAddress;
respondMessage[1] = 3;
respondMessage[2] = Convert.ToByte(2 * numberOfPoints);
startAddress = (readData[2] << 8) | readData[3];
int j = 0;
for (int i = 0; i < numberOfPoints; i++)
{
respondMessage[i + j + 3] = Convert.ToByte((AO[startAddress + i] >> 8) & 0xff);
respondMessage[i + j + 4] = Convert.ToByte(AO[startAddress + i] & 0xff);
j++;
}
byte[] crcCalculation = CRCStuff.calculateCRC(ref respondMessage, bytesToSend - 2);
respondMessage[bytesToSend - 2] = crcCalculation[0];
respondMessage[bytesToSend - 1] = crcCalculation[1];
return(respondMessage);
}
private void raiseAppSerialDataEvent(byte[] buf)
{
Buffer.BlockCopy(buf, 0, readData, 0, buf.Length);
//проверка прочитанного сообщения на принадлежность к типу Modbus-запроса
if (readData[0] == _slaveAddress && readData[1] == 0x03)
{
if (CRCStuff.checkCRC(ref readData, 8))
{
byte[] messageToSend = createRespondMessage();
System.Threading.Thread.Sleep(_slaveDelay);
StreamWriter(messageToSend, 0, messageToSend.Length);
//addLog(createLogStr(ref messageToSend), LogType.TX, worker);
}
else
{
//addLog("", LogType.CRC_ERR, worker);
}
}
}