internal static byte[] FinsCmd(RorW rw, PlcMemory mr, MemoryType mt, short ch, short offset, short cnt)
{
byte[] buffer = new byte[0x22];
buffer[0] = 70;
buffer[1] = 0x49;
buffer[2] = 0x4e;
buffer[3] = 0x53;
buffer[4] = 0;
buffer[5] = 0;
if (rw == RorW.Read)
{
buffer[6] = 0;
buffer[7] = 0x1a;
}
else if (mt == MemoryType.Word)
{
buffer[6] = (byte)(((cnt * 2) + 0x1a) / 0x100);
buffer[7] = (byte)(((cnt * 2) + 0x1a) % 0x100);
}
else
{
buffer[6] = 0;
buffer[7] = 0x1b;
}
buffer[8] = 0;
buffer[9] = 0;
buffer[10] = 0;
buffer[11] = 2;
buffer[12] = 0;
buffer[13] = 0;
buffer[14] = 0;
buffer[15] = 0;
buffer[0x10] = 0x80;
buffer[0x11] = 0;
buffer[0x12] = 2;
buffer[0x13] = 0;
buffer[20] = BasicClass.plcNode;
buffer[0x15] = 0;
buffer[0x16] = 0;
buffer[0x17] = BasicClass.pcNode;
buffer[0x18] = 0;
buffer[0x19] = 0xff;
if (rw == RorW.Read)
{
buffer[0x1a] = 1;
buffer[0x1b] = 1;
}
else
{
buffer[0x1a] = 1;
buffer[0x1b] = 2;
}
buffer[0x1c] = GetMemoryCode(mr, mt);
buffer[0x1d] = (byte)(ch / 0x100);
buffer[30] = (byte)(ch % 0x100);
buffer[0x1f] = (byte)offset;
buffer[0x20] = (byte)(cnt / 0x100);
buffer[0x21] = (byte)(cnt % 0x100);
return(buffer);
}
/// <summary>
/// Fins读写指令生成
/// </summary>
/// <param name="rw">读写类型</param>
/// <param name="mr">寄存器类型</param>
/// <param name="mt">地址类型</param>
/// <param name="ch">起始地址</param>
/// <param name="offset">位地址：00-15,字地址则为00</param>
/// <param name="cnt">地址个数,按位读写只能是1</param>
/// <returns></returns>
internal byte[] FinsCmdUDP(RorW rw, PlcMemory mr, MemoryType mt, short ch, short offset, short cnt, ref int iLength)
{
int index = 0;
byte[] array = new byte[256];
//UDP FINS header
array[index++] = 0x80; //ICF - Display frame information
array[index++] = 0x00; //RSV - Reserved by system
array[index++] = 0x02; //GCT - Permissible number of gateways
array[index++] = 0x00; //DNA - Destination network address
array[index++] = plcNode; //DA1 - Destination node address (PLC node)
array[index++] = 0x00; //DA2 - Destination unit address
array[index++] = 0x00; //SNA - Source network address
array[index++] = pcNode; //SA1 - Source node address (PC node)
array[index++] = 0x00; //SA2 - Source unit address
array[index++] = 0x00; //SID - Service ID
//FINS Command (read: 0101 / write: 0102)
array[index++] = 0x01; //MRC - Main request code
array[index++] = (rw == RorW.Read) ? (byte)0x01: (byte)0x02; //SRC - Sub-request code
//FINS Parameter/data Command parameters and send data.The data length depends on the MRC and SRC
array[index++] = GetMemoryCode(mr, mt); //I/O Memory area code (DM - 0x82 )
array[index++] = (byte)(ch / 256); //Beginning address (High byte)
array[index++] = (byte)(ch % 256); //Beginning address (Low byte)
array[index++] = (byte)offset; //Bit address (00 - 15 / 00)
array[index++] = (byte)(cnt / 256); //NO. of items (High byte)
array[index++] = (byte)(cnt % 256); //NO. of items (low byte)
iLength = index;
return(array);
}
/// <summary>
/// Fins读写指令生成
/// </summary>
/// <param name="rw">读写类型</param>
/// <param name="mr">寄存器类型</param>
/// <param name="mt">地址类型</param>
/// <param name="ch">起始地址</param>
/// <param name="offset">位地址：00-15,字地址则为00</param>
/// <param name="cnt">地址个数,按位读写只能是1</param>
/// <returns></returns>
internal static byte[] FinsCmd(RorW rw, PlcMemory mr, MemoryType mt, short ch, short offset, short cnt)
{
//byte[] array;
//if (rw == RorW.Read)
// array = new byte[34];
//else
// array = new byte[(int)(cnt * 2 + 33 + 1)];//长度是如何确定的在fins协议174页
byte[] array = new byte[34]; //写指令还有后面的写入数组需要拼接在一起！
//TCP FINS header
array[0] = 0x46; //F
array[1] = 0x49; //I
array[2] = 0x4E; //N
array[3] = 0x53; //S
array[4] = 0; //cmd length
array[5] = 0;
//指令长度从下面字节开始计算array[8]
if (rw == RorW.Read)
{
array[6] = 0;
array[7] = 0x1A;//26
}
else
{
//写数据的时候一个字占两个字节，而一个位只占一个字节
if (mt == MemoryType.Word)
{
array[6] = (byte)((cnt * 2 + 26) / 256);
array[7] = (byte)((cnt * 2 + 26) % 256);
}
else
{
array[6] = 0;
array[7] = 0x1B;
}
}
array[8] = 0;//frame command
array[9] = 0;
array[10] = 0;
array[11] = 0x02;
array[12] = 0;//err
array[13] = 0;
array[14] = 0;
array[15] = 0;
//command frame header
array[16] = 0x80; //ICF
array[17] = 0x00; //RSV
array[18] = 0x02; //GCT, less than 8 network layers
array[19] = 0x00; //DNA, local network
array[20] = BasicClass.plcNode; //DA1
array[21] = 0x00; //DA2, CPU unit
array[22] = 0x00; //SNA, local network
array[23] = BasicClass.pcNode; //SA1
array[24] = 0x00; //SA2, CPU unit
array[25] = 0xFF;
//TODO：array[25] = Convert.ToByte(21);//SID//?????----------------------------------00-FF任意值
//指令码
if (rw == RorW.Read)
{
array[26] = 0x01;//cmdCode--0101
array[27] = 0x01;
}
else
{
array[26] = 0x01;//write---0102
array[27] = 0x02;
}
//地址
//array[28] = (byte)mr;
array[28] = GetMemoryCode(mr, mt);
array[29] = (byte)(ch / 256);
array[30] = (byte)(ch % 256);
array[31] = (byte)offset;
array[32] = (byte)(cnt / 256);
array[33] = (byte)(cnt % 256);
return(array);
}
