//获取上下行标识及报文长度
//分两个字节,代表数据长度 19-20位
public int DataLength(int position)
{
byte[] length = new byte[2];
Array.Copy(Data, position, length, 0, 2);
string lengthStr = BCDUtil.ConvertToHex(length);
return(Convert.ToInt32(lengthStr.Substring(1), 16));
}
public static int GetDataLength(byte[] data, out int headLength)
{
headLength = GetStartPosition(data);
if (data.Length < headLength + 19)
{
return(headLength + 43);
}
byte[] length = new byte[2];
Array.Copy(data, headLength + 18, length, 0, 2);
string lengthStr = BCDUtil.ConvertToHex(length);
return(Convert.ToInt32(lengthStr.Substring(1), 16) + 24);
}
/// <summary>
/// 08H N(2) 08H
/// 主从机地址，1字节（其中地址FF表示主机）
/// 示例：08 08 FF
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public static string Code(byte[] data)
{
return(BCDUtil.ConvertToHex(data[2]));
}