private byte[] GetWriteValueBytes(byte[] buffer)
{
// 更改标志位即可
buffer[1] = 0x10;
buffer = CRCTool.AddCRC(buffer.Take(6).ToArray());
return(buffer);
}
// 获取PLC实时值方法
private byte[] GetPLCBuffer(string dtuID)
{
byte[] head = GetPLCHeadData(dtuID);
byte[] initBody = GetInitPLCBodyData();
ReplaceRealValue(ref initBody);
byte[] body = CRCTool.AddCRC(initBody);
return(head.Concat(body).ToArray());
}
//获取随机PLC数据方法
private byte[] GetPLCAutoBuffer(string dtuID)
{
byte[] head = GetPLCHeadData(dtuID);
byte[] initBody = GetInitPLCBodyData();
this.Invoke(new Action(() => {
ReplaceAutoRealValue(ref initBody);
}));
byte[] aa = initBody;
byte[] body = CRCTool.AddCRC(initBody);
return(head.Concat(body).ToArray());
}
private byte[] GetReadValueBytes(byte[] buffer)
{
//拿到地址值作为结果值返回去
byte[] addr = buffer.Skip(2).Take(2).ToArray();
buffer[2] = 0x02;
////// 使用随机数应答 1-10
//Random rd = new Random();
//ushort r= Convert.ToUInt16( rd.Next(1, 1000));
//buffer = buffer.Take(3).Concat(BitConverter.GetBytes(r).Reverse()).ToArray();
buffer = buffer.Take(3).Concat(addr).ToArray();
buffer = CRCTool.AddCRC(buffer);
return(buffer);
}
// 检验最后两个字节是CRC的数组
public static bool CheckCRC16Data(byte[] data)
{
if (data.Length < 2)
{
return(false);
}
byte[] buffer = new byte[data.Length - 2];
Buffer.BlockCopy(data, 0, buffer, 0, data.Length - 2);
byte[] bufferAddCRC = CRCTool.AddCRC(buffer);
if (bufferAddCRC.Length == data.Length)
{
if (data[data.Length - 2] == bufferAddCRC[bufferAddCRC.Length - 2] && data[data.Length - 1] == bufferAddCRC[bufferAddCRC.Length - 1])
{
return(true);
}
}
return(false);
}
