modbus(C语言程序)参考模板

1、modbus（C语言程序）  2009-10-15 09:31:28|  分类： 默认分类|字号 订阅#include <REGX52.H>#include<intrins.h>/_nop_();#define  OSFREQ 11059200char TimeInterval;char MyAddress;            char data DI6=1,2,3,4,5,6;

2、 char data DO6=6,7,8,9,10,11; char data AI6=11,12,13,14,15,16;char data AO6=16,17,18,19,20,21;   unsigned char data ReceiveData14;unsigned char data  countnumber;sbit Recenable  =P16;/控制端   sbit led  =P27;/控制端/*-函数说明：CRC 高位字节值表-*/static unsigned char

3、 code auchCRCHi = 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,                 

4、60;                                            0x80, 0x41, 0x01, 0xC0, 0x80, 0x4

5、1, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x

6、80, 0x41, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0

7、xC1, 0x81, 0x40,0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,1 / 140x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,

8、0x40, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

9、 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40 ;/*-函数说明：CRC低位字节值表-*/static unsigned char code auchCRCLo = 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06,0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD,0x0F, 0xCF, 0xCE,

10、 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A,0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4,0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3,0xF2, 0x32, 0x36, 0xF6

11、, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4,0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29,0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED,0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,0x22, 0xE2, 0xE3, 0x23, 0xE

12、1, 0x21, 0x20, 0xE0, 0xA0, 0x60,0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67,0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68,0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E,0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x

13、7C, 0xB4, 0x74, 0x75, 0xB5,0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71,0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92,0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B,0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0

14、x49, 0x89, 0x4B, 0x8B,0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42,0x43, 0x83, 0x41, 0x81, 0x80, 0x40;/*-调用方式：unsigned int CRC16(unsigned char *puchMsg, unsigned int usDataLen)函数说明：CRC校验-*/unsigned int CRC16(unsigned char *puch

15、Msg, unsigned int usDataLen)  unsigned char uchCRCHi = 0xFF ;    / 高CRC字节初始化   unsigned char uchCRCLo = 0xFF ;    / 低CRC 字节初始化  unsigned uIndex ;                  /

16、CRC循环中的索引   while (usDataLen-)                / 传输消息缓冲区        uIndex = uchCRCHi *puchMsg+ ; / 计算CRC             uchCRCHi = u

17、chCRCLo auchCRCHiuIndex ;    uchCRCLo = auchCRCLouIndex ;    return (uchCRCHi << 8 | uchCRCLo) ;/*-调用方式：unsigned char getbit(unsigned int  address,unsigned char  function)函数说明：取出所给地址的位值-*/unsigned char getbit(unsigned int  address,unsigned char  fun

18、ction)  unsigned char data Offset;  unsigned char data temp;  unsigned char data *Myaddress;    Offset=(char)address&0x07;  switch (function)                 /根据功能码不同进行相应处理  &#

19、160;  case 2:           Myaddress=DI;           break;   case 1:           Myaddress=DO;        

20、;                break;   default:           return 2;    temp=(char)(address>>3);  temp=*(Myaddress+temp);  temp>>=(Offset);  i

21、f (temp&0x01)    return 1;  else    return 0;/*-调用方式：void SendData(unsigned char  *output,unsigned char  Outlength)函数说明：发送数据至窗口-*/void SendData(unsigned char  *output,unsigned char  Outlength)    ES=0;  while(Outlength-)&

22、#160;       TI=0;    ACC=*output;    TB8=P;    SBUF=*(output+);    while(!TI);    TI=0;         ES=1;/*-调用方式：void Function12(unsigned char address,unsigned char len)

23、函数说明：功能码1，2处理-*/void Function12(unsigned char address,unsigned char len)  unsigned int data i;  unsigned char data j;  unsigned char data length;  unsigned char data *send;  unsigned int data temp;  unsigned char data function;  length=0;  send=ReceiveData;

24、60; function=send1;  for (i=1;i<=len;i+)      length+;    *(send+2+length)=0;    for (j=0;j<8;j+)          *(send+2+length)=*(send+2+length)|getbit(address,function)<<j;   address+;&#

25、160;  i+;   if(i>len)break;        i-;    *(send+2)=length;                        /数据长度  temp=CRC16(send,length+3); 

26、              /DI状态数据  *(send+3+length)=(char)(temp>>8);        /CRC校验高  *(send+4+length)=(char)temp;             /CRC校验低

27、60; SendData(send,length+5);                 /调用A发送程序/*-调用方式：void Function3(unsigned char  address,unsigned char  len)函数说明：功能码3处理-读取寄存器-*/void Function3(unsigned char  address,unsigned char  len) 

28、; unsigned char data i;  unsigned char data *send;  unsigned int data temp;  send=ReceiveData;  *(send+2)=2*len;                         /数据长度高  address=2*

29、address;  for(i=0;i<len;i+)                       /取输入寄存器数据      *(send+3+2*i)=AOaddress+;    *(send+4+2*i)=AOaddress+;    temp=CRC16(sen

30、d,2*len+3);                /CRC校验  *(send+3+2*len)=(char)(temp>>8);  *(send+4+2*len)=(char)temp;  SendData(send,2*len+5);              

31、;    /调用A发送程序/*-调用方式：void Function4(unsigned char  address,unsigned char  len)函数说明：功能码处理4-读取输入寄存器-*/void Function4(unsigned char  address,unsigned char  len)  unsigned char data i;  unsigned char data *send;  unsigned int data temp;  send=Receiv

32、eData;  *(send+2)=2*len;  address=2*address;  for(i=0;i<len;i+)                       /取数据      *(send+4+2*i)=AIaddress+;    *(send+3+2*i

33、)=AIaddress+;    temp=CRC16(send,2*len+3);  *(send+3+2*len)=(char)(temp>>8);  *(send+4+2*len)=(char)temp;  SendData(send,2*len+5); /*-调用方式：void Function6(unsigned char address)函数说明：写单路寄存器-*/void Function6(unsigned char address)  int temp;  unsigned char

34、data *WriteData;  temp=2*address;  WriteData=AO;  /将写入的数据进行处理  /your code to add here to deal with the write value  *(WriteData+temp)=ReceiveData4;  *(WriteData+temp+1)=ReceiveData5;  SendData(ReceiveData,countnumber);       /调用发送程序，返回

35、与主机相同的报文/*-调用方式：void SendError(char ErrorCode)函数说明：-*/void SendError(char ErrorCode)  unsigned char data *send;  unsigned int data temp;  send=ReceiveData;  *(send+1)=ReceiveData1|0x01;/最高位置1  *(send+2)=ErrorCode;  temp=CRC16(send,3);  *(send+3)=(char)(temp>>

36、8);  *(send+4)=(char)temp;  SendData(send,countnumber);              /调用发送程序,返回错误代码/*-调用方式：void Deal()函数说明：接收数据处理-*/void Deal()  unsigned int data temp;  unsigned char data address;  unsigned char data length;&

37、#160; unsigned char data counter;  unsigned char data *Pointer;  Pointer=ReceiveData;  counter=countnumber;  if (counter<=3 ) return;  temp=Pointercounter-2<<8;     temp= temp|Pointercounter-1;  if( temp=CRC16(Pointer,counter-2)  &

38、#160;   /较验正确       address=Pointer3;    length=Pointer5;    if(address<48)          switch (Pointer1)               

39、   /根据功能码不同进行相应处理*/       case 1:            Function12(address,length);            break;    case 2:      

40、60;     Function12(address,length);            break;    case 3:            address=address-1;          &

41、#160; Function3(address,length);            break;    case 4:            address=address-1;            Function4(address

42、,length);            break;    case 6:            address=address-1;            Function6(address);    de

43、fault:               SendError(0x81);               break;              else    SendError(

44、0x82);    countnumber=0;/*bit Chargetbit(unsigned char character,unsigned char Number)    if(character>>Number&0x01=1)    return 1;  else    return 0;/设定某一位的值*unsigned char SetBit(unsigned char Character,unsigned char num,bit bool

45、en)  unsigned char code bit_value=1,2,4,8,16,32,64,128;  if(boolen)     return Character|bit_valuenum;  else    return Character&bit_valuenum;*/*-调用方式：void Init_timer2(unsigned int baudrate)函数说明：定时器2的初始化-*/void Init_timer2(unsigned int baudrate)&

46、#160; unsigned int data TimReg2;  T2CON = 0x00;  T2MOD = 0x00;  TimReg2=65536-(OSFREQ/384/baudrate*11);  RCAP2L=TimReg2&0x00ff;  RCAP2H=(TimReg2>8);       /RCAP2H=TimReg2/256  RCAP2L=0; RCAP2H=0;  TL2  = RCAP2L; &

47、#160;                        /   TH2  = RCAP2H;                    

48、60;     /   TR2=1;                                  / T2CON.2 start timer    ET2=0; &

49、#160;                                / 开定时器2中断/*-调用方式：void Init_SerialPort(unsigned int baudrate)函数说明：串口初始化-*/void Init_SerialPort(unsigned int b

50、audrate)  unsigned char TimReg2;  SCON = 0xd0;                            / 方式3, 8-bit UART, enable rcvr        TMOD = 0

51、x21;                            / T0方式1（16位）,  T1方式2,8位重装          TimReg2=256-(OSFREQ/384/baudrate);  TH1 = T

52、imReg2;                          / 定时器1,在11.0592MHz下,波特率为9600     TL1 = TH1;  TR1= 1;           

53、;                      / TR1:  定时开始                          

54、;  /PS=1;                                 / 串行中断优先  ES=1;            &

55、#160;                    / 接收中断/*-函数说明：主函数-*/main()    EA=1;                     

56、0;             /开总中断  Init_SerialPort(9600);  Init_timer2(9600);  Recenable=0;                        

57、60;   /接收允许  MyAddress=0x01;                         /本机地址  while(1)            /*-调用方式：void SeiralA() interrupt 4 using 0函数说明：通讯中断-*/void SeiralA() interrupt 4 using 0  if(RI)       if(TimeInterval>2)&&(TimeInterval<=4)     countnumber=0;  &#