public string cmd_generator(string cmd)
{
CRC crc = new CRC();
string length_data = string.Empty;
HEADER = string.Empty;
DATA_BYTE_LENGTH = 0;
USER_DATA = string.Empty;
CMD = string.Empty;
ADDRESS = string.Empty;
CMD_CODE = string.Empty;
RTU_SYS_TIME = string.Empty;
WORK_STATE = string.Empty;
SIGNAL_S = string.Empty;
CRC_DATA = string.Empty;
string result=string.Empty;
switch (cmd)
{
case "QUERY":
CMD = "00";
ADDRESS = rtu_id;
CMD_CODE = "21";
USER_DATA = CMD + ADDRESS + CMD_CODE;
CRC_DATA = Convert.ToString(crc.CRC8(USER_DATA, 0), 16);
DATA_BYTE_LENGTH = USER_DATA.Length / 2;
length_data = swapByte(DATA_BYTE_LENGTH.ToString("x8"));
HEADER = "68" + length_data + length_data + "68";
result = HEADER + USER_DATA + CRC_DATA + "16";
break;
case "LOGOUT":
break;
default:
break;
}
return result;
}
public string ParseData(string rtu_data)
{
string result = string.Empty;
bool IsVaild = false;
string S_DATA_LENGTH;
//1. Vertify input data
if (rtu_data.Substring(0, 2) == "68" && rtu_data.Substring(rtu_data.Length-2, 2) == "16")
{
IsVaild = true;
}
else
{
IsVaild = false;
}
if (IsVaild == true)
{
//2. split header to get length
S_DATA_LENGTH = rtu_data.Substring(2, 8);
DATA_BYTE_LENGTH = Convert.ToInt32(swapByte(S_DATA_LENGTH.Substring(0, 4)),16);
if (S_DATA_LENGTH.Substring(0, 4) == S_DATA_LENGTH.Substring(4, 4))
{
//DATA_BYTE_LENGTH*2 + 4 --- 2 means 1 bytes to 2 chars, 4 means "CRC" 2 chars + "end" 2 chars
if (rtu_data.Substring(12).Length == (DATA_BYTE_LENGTH*2 + 4))
{
Console.WriteLine("{0}", "正常：数据长度正确");
//3. GET CMD ADD CMD_CODE
CMD = rtu_data.Substring(12, 2);
ADDRESS = rtu_data.Substring(14, 8);
CMD_CODE = rtu_data.Substring(22, 2);
USER_DATA = rtu_data.Substring(12, DATA_BYTE_LENGTH * 2);
CRC ccc = new CRC();
CRC_DATA = Convert.ToString(ccc.CRC8(USER_DATA, 0), 16);
Console.WriteLine("USER_dATA: {0}, {1}", USER_DATA, CRC_DATA);
//4. judge CMD_TYPE
if (CMD == "80" && CMD_CODE == "11")
{
CMD_TYPE = "RTU_LOGIN";
}
else if ((CMD == "A0" || CMD == "B0") && CMD_CODE == "21")
{
CMD_TYPE = "RTU_DATA";
}else if((CMD == "80" && CMD_CODE == "12"))
{
CMD_TYPE = "RTU_REQUIRE_LOGOUT";
}
else if(CMD == "E0")
{
CMD_TYPE = "CMD_ERROR--";
switch(rtu_data.Substring(24, 2))
{
case "01":
break;
case "02":
break;
case "03":
break;
case "04":
CMD_TYPE += "RTU_DATA_EMPTY";
break;
default:
CMD_TYPE += "ERROR_CODE";
break;
}
}else if (CMD == "A0" && CMD_CODE == "12")
{
CMD_TYPE = "RTU_LOGOUT";
}
//5.
switch (CMD_TYPE)
{
case "RTU_LOGIN":
longCmdParse(rtu_data);
break;
case "RTU_DATA":
FD_DATA = FD_DataParse(USER_DATA);
break;
case "RTU_REQUIRE_LOGOUT":
break;
case "RTU_DATA_EMPTY":
break;
case "ERROR_READ_ERROR":
break;
}
Console.WriteLine("Length:{0},Cmd:{1},Address:{2},Cmd_code:{3}", DATA_BYTE_LENGTH, CMD, ADDRESS, CMD_CODE);
}
else
{
Console.WriteLine("{0}", "错误：数据长度错误");
return "ERROR_LENGTH";
}
}
else
{
Console.WriteLine("{0}", "错误：L1 L2不相等");
return "ERROR_L1_L2LENGTH";
}
}
return result;
}