modbus.h

用于C51上的modbus协议

typedef struct{
    uchar HexCode;
    uchar AscCodeHi;
    uchar AscCodeLow;
}  HexAsc;


typedef struct{
    uchar DevAddr;
    uchar FuncCode;
    uchar DataBuf[0x10];
    uchar DataLen;
    uint  CrcCheck;
    uchar LrcCheck;
}  ModbusFrame;


typedef struct {
    uchar   Slave_Addr;
    uchar   Func_Code;
    uint    Param_A;
    uint    Param_B;
    uint    Crc_Check;
    uchar   Lrc_Check;
    uchar   Resp_Data_Buf[0x10];
    uchar   Exception_Flag;  
}   Frame_Style_A;