modbusC语言程序.docx
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modbusC语言程序.docx
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modbusC语言程序
modbus(C语言程序)
默认分类字号 订阅
#include
#include
#define OSFREQ11059200
charTimeInterval;
charMyAddress;
chardataDI[6]={1,2,3,4,5,6};
chardataDO[6]={6,7,8,9,10,11};
chardataAI[6]={11,12,13,14,15,16};
chardataAO[6]={16,17,18,19,20,21};
unsignedchardataReceiveData[14];
unsignedchardata countnumber;
sbitRecenable =P1^6;//控制端
sbitled =P2^7;//控制端
/*---------------------------------------------------------------------------
函数说明:
CRC高位字节值表
---------------------------------------------------------------------------*/
staticunsignedcharcodeauchCRCHi[]={
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,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x00,0xC1,
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,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,
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,
0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,
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,
0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,
0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
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,
0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
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
---------------------------------------------------------------------------*/
staticunsignedcharcodeauchCRCLo[]={
0x00,0xC0,0xC1,0x01,0xC3,0x03,0x02,0xC2,0xC6,0x06,
0x07,0xC7,0x05,0xC5,0xC4,0x04,0xCC,0x0C,0x0D,0xCD,
0x0F,0xCF,0xCE,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,
0xF2,0x32,0x36,0xF6,0xF7,0x37,0xF5,0x35,0x34,0xF4,
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,
0x22,0xE2,0xE3,0x23,0xE1,0x21,0x20,0xE0,0xA0,0x60,
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,0x7C,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,
0x99,0x59,0x58,0x98,0x88,0x48,0x49,0x89,0x4B,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:
unsignedintCRC16(unsignedchar*puchMsg,unsignedintusDataLen)
函数说明:
CRC校验
---------------------------------------------------------------------------*/
unsignedintCRC16(unsignedchar*puchMsg,unsignedintusDataLen)
{
unsignedcharuchCRCHi=0xFF; //高CRC字节初始化
unsignedcharuchCRCLo=0xFF; //低CRC字节初始化
unsigneduIndex; //CRC循环中的索引
while(usDataLen--) //传输消息缓冲区
{
uIndex=uchCRCHi^*puchMsg++;//计算CRC
uchCRCHi=uchCRCLo^auchCRCHi[uIndex];
uchCRCLo=auchCRCLo[uIndex];
}
return(uchCRCHi<<8|uchCRCLo);
}
/*---------------------------------------------------------------------------
调用方式:
unsignedchargetbit(unsignedint address,unsignedchar function)
函数说明:
取出所给地址的位值
---------------------------------------------------------------------------*/
unsignedchargetbit(unsignedint address,unsignedchar function)
{
unsignedchardataOffset;
unsignedchardatatemp;
unsignedchardata*Myaddress;
Offset=(char)address&0x07;
switch(function) //根据功能码不同进行相应处理
{
case2:
Myaddress=DI;
break;
case1:
Myaddress=DO;
break;
default:
return2;
}
temp=(char)(address>>3);
temp=*(Myaddress+temp);
temp>>=(Offset);
if(temp&0x01)
return1;
else
return0;
}
/*---------------------------------------------------------------------------
调用方式:
voidSendData(unsignedchar *output,unsignedchar Outlength)
函数说明:
发送数据至窗口
---------------------------------------------------------------------------*/
voidSendData(unsignedchar *output,unsignedchar Outlength)
{
ES=0;
while(Outlength--)
{
TI=0;
ACC=*output;
TB8=P;
SBUF=*(output++);
while(!
TI);
TI=0;
}
ES=1;
}
/*---------------------------------------------------------------------------
调用方式:
voidFunction12(unsignedcharaddress,unsignedcharlen)
函数说明:
功能码1,2处理
---------------------------------------------------------------------------*/
voidFunction12(unsignedcharaddress,unsignedcharlen)
{
unsignedintdatai;
unsignedchardataj;
unsignedchardatalength;
unsignedchardata*send;
unsignedintdatatemp;
unsignedchardatafunction;
length=0;
send=ReceiveData;
function=send[1];
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)< address++; i++; if(i>len)break; } i--; } *(send+2)=length; //数据长度 temp=CRC16(send,length+3); //DI状态数据 *(send+3+length)=(char)(temp>>8); //CRC校验高 *(send+4+length)=(char)temp; //CRC校验低 SendData(send,length+5); //调用A发送程序 } /*--------------------------------------------------------------------------- 调用方式: voidFunction3(unsignedchar address,unsignedchar len) 函数说明: 功能码3处理-----读取寄存器 ---------------------------------------------------------------------------*/ voidFunction3(unsignedchar address,unsignedchar len) { unsignedchardatai; unsignedchardata*send; unsignedintdatatemp; send=ReceiveData; *(send+2)=2*len; //数据长度高 address=2*address; for(i=0;i { *(send+3+2*i)=AO[address++]; *(send+4+2*i)=AO[address++]; } temp=CRC16(send,2*len+3); //CRC校验 *(send+3+2*len)=(char)(temp>>8); *(send+4+2*len)=(char)temp; SendData(send,2*len+5); //调用A发送程序 } /*--------------------------------------------------------------------------- 调用方式: voidFunction4(unsignedchar address,unsignedchar len) 函数说明: 功能码处理4----读取输入寄存器 ---------------------------------------------------------------------------*/ voidFunction4(unsignedchar address,unsignedchar len) { unsignedchardatai; unsignedchardata*send; unsignedintdatatemp; send=ReceiveData; *(send+2)=2*len; address=2*address; for(i=0;i { *(send+4+2*i)=AI[address++]; *(send+3+2*i)=AI[address++]; } 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: voidFunction6(unsignedcharaddress) 函数说明: 写单路寄存器 ---------------------------------------------------------------------------*/ voidFunction6(unsignedcharaddress) { inttemp; unsignedchardata*WriteData; temp=2*address; WriteData=AO; //将写入的数据进行处理 //yourcodetoaddheretodealwiththewritevalue *(WriteData+temp)=ReceiveData[4]; *(WriteData+temp+1)=ReceiveData[5]; SendData(ReceiveData,countnumber); //调用发送程序,返回与主机相同的报文 } /*--------------------------------------------------------------------------- 调用方式: voidSendError(charErrorCode) 函数说明: ---------------------------------------------------------------------------*/ voidSendError(charErrorCode) { unsignedchardata*send; unsignedintdatatemp; send=ReceiveData; *(send+1)=ReceiveData[1]|0x01;//最高位置1 *(send+2)=ErrorCode; temp=CRC16(send,3); *(send+3)=(char)(temp>>8); *(send+4)=(char)temp; SendData(send,countnumber); //调用发送程序,返回错误代码 } /*--------------------------------------------------------------------------- 调用方式: voidDeal() 函数说明: 接收数据处理 ---------------------------------------------------------------------------*/ voidDeal() { unsignedintdatatemp; unsignedchardataaddress; unsignedchardatalength; unsignedchardatacounter; unsignedchardata*Pointer;
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