modbusC语言程序docx.docx
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modbusC语言程序docx.docx
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modbusC语言程序docx
modbus(C语言程序)
2009-10-1509:
31:
28|分类:
默认分类字号订阅
#include
#include
#defineOSFREQ11059200
CharTimeInterval;
CharMyAddress;
ChardataDl[6]={1,2,3,4,5,6};
ChardataDO[6]={6,7,8,9,10,11};
ChardataAl[6]={11,12,13,14,15,16};
ChardataAO[6]={16,17,18,19,20,21};
UnSignedChardataReCeiVeData[14];
UnSignedChardataCoUntnumber;
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,OxCO,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
UnSignedUlndex;//CRC循环中的索引
while(USDataLen--)//传输消息缓冲区
{
UlndeX=UChCRCHi^*pUChMsg++;//计算CRC
UChCRCHi=UChCRCLO^aUChCRCHi[U∣ndex];
UChCRCLO=aUChCRCLo[U∣ndex];
}
retUrn(UChCRCHiVV8|UChCRCLo);
}
/*
调用方式:
UnSignedChargetbit(UnSignedintaddress,UnSignedCharfUnCtiOn)
函数说明:
取出所给地址的位值
*/
UnSignedChargetbit(UnSignedintaddress,UnSignedCharfUnCtion)
{
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;
}
/*
Outlength)
调用方式:
voidSendData(UnSignedChar*output,UnSignedChar
函数说明:
发送数据至窗口
*/
voidSendData(UnSignedChar*output,unsignedCharOutlength)
{
ES=0;
WhiIe(OUtIength--)
{
TI=O;
ACC=*output;
TB8=P;
SBUF=*(oUtPUt++);
while(!
TI);
TI=0;
}
ES=1;
}
/*
调用方式:
voidFUnCtiOn12(UnSignedCharaddress,UnSignedCharIen)
函数说明:
功能码1,2处理
*/
voidFUnCtiOn12(UnSignedCharaddress,UnSignedCharIen)
{
UnSignedintdatai;
UnSignedChardataj;
UnSignedChardataIength;
UnSignedChardata*send;
UnSignedintdatatemp;
UnSignedChardatafunCtion;
Iength=0;
Send=ReceiveData;
funCtiOn=Send[1];
for(i=1;i<=len;i++)
Iength++;
*(send+2+Iength)=0;
for(j=0;j<8;j++)
*(send+2+Iength)=*(send+2+Iength)∣getbit(address,function)< address++; i++; if(i>len)break; *(send+2)=length; //数据长度 temp=CRC16(send,length+3); *(send+3+length)=(char)(temp>>8); *(send+4+length)=(char)temp; SendData(send,length+5); /*■ //Dl状态数据 //CRC校验高 //CRC校验低 〃调用A发送程序 调用方式: voidFUnCtion3(unSignedCharaddress,UnSignedChar Ien) 函数说明: 功能码3处理-----读取寄存器 ■*/ voidFUnCtion3(unSignedChar address,UnSignedCharIen) UnSignedChardatai; UnSignedChardata*send; UnSignedintdatatemp; Send=ReceiveData; //数据长度高 *(send+2)=2*len; 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); 〃取输入寄存器数据 *(send+3+2*len)=(Char)(temp>>8); *(send+4+2*len)=(Char)temp; SendData(send,2*len+5); /*■ //CRC校验 〃调用A发送程序 调用方式: voidFUnCtion4(unSignedCharaddress,UnSignedChar Ien) 函数说明: 功能码处理4----读取输入寄存器 ■*/ voidFUnCtion4(unSignedCharaddress,UnSignedCharIen) UnSignedChardatai; UnSignedChardata*send; UnSignedintdatatemp; Send=ReceiveData; *(send+2)=2*len; address=2*address; for(i=0;ivlen;i++)//取数据 { *(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; //I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);ZZ调用发送程序,返回错误代码 } Z* 调用方式: voidDeal() 函数说明: 接收数据处理 */ voidDeal() { UnSignedintdatatemp; UnSignedChardataaddress; UnSignedChardataIength; UnSignedChardataCoUnter; UnSignedChardata*Pointer; Pointer=ReceiveData; CoUnter=coUntnumber; if(coUnter<=3)return; temp=Pointer[coUnter-2]<<8; temp=temp|Pointer[coUnter-1]; if(temp==CRC16(Pointer,counter-2))//较验正确 { address=Pointer[3]; Iength=Pointer[5]; if(address<48) { SWitCh(Pointer[1])//根据功能码不同进行相应处理*/ { CaSe1: FUnCtion12(address,length); break; CaSe2: FUnCtion12(address,length); break; CaSe3: address=address-1; FUnCtion3(address,length); break; CaSe4: address=address-1; FUnCtion4(address,length); break; CaSe6: address=address-1; FUnCtiOn6(address); default: SendError(0x81); break; } } else {SendError(0x82);} } COUntnUmber=0; } /*bitChargetbit(UnSignedCharCharaCter,unsignedCharNUmber) { if(character>>Number&OxO仁=1) return1; else return0; } 〃设定某一位的值 *********************************************************** UnSignedCharSetBit(UnSignedCharCharaCter,UnSignedCharnum,bitboolen){ UnSignedCharcodebit_value[]={1,2,4,8,16,32,64,128}; if(boolen) returnCharaCterIbit_value[num];else returnCharaCter&~bit_value[num]; }*/ /* 调用方式: voidInit_timer2(UnSignedintbaudrate) 函数说明: 定时器2的初始化 */ voidInit_timer2(UnSignedintbaudrate) { UnSignedintdataTimReg2; T2CON=0x00; T2MOD=0x00; TimReg2=65536-(OSFREQ∕384∕baudrate*11); TR2=1;ZZT2CON.2Starttimer ET2=0;ZZ开定时器2中断 } Z* 调用方式: VoidIniIt_SerialPort(UnSignedintbaudrate) 函数说明: 串口初始化 *Z voidInit_SerialPort(UnSignedintbaudrate) { UnSignedCharTimReg2; SCON=OxdO;ZZ方式3,&bitUART,enablercvr TMOD=0x21;ZZTO方式1(16位),T1方式2,8位重装 TimReg2=256-(OSFREQZ384ZbaUdrate); TH1=TimReg2;ZZ定时器1,在11.0592MHz下,波特率为9600 TL1=TH1; TR1=1;ZZTR1: 定时开始 ZZPS=1;ZZ串行中断优先 ES=1;ZZ接收中断 } Z* 函数说明: 主函数 *Z main() { EA=1;//开总中断 Init_SerialPort(9600); Init_timer2(9600); ReCenable=0;//接收允许 MyAddreSS=0x01;ZZ本机地址 while (1) { } } Z* 调用方式: voidSeiraIAOinterrupt4USing0 函数说明: 通讯中断 */ voidSeiraIA()interrUpt4USing0 { if(RI) { if((TimeInterval>2)&&(TimeInterval<=4)) {CoUntnUmber=0;} if(coUntnUmber>60) {CoUntnUmber=0;} ReCeiVeData[countnUmbe叶+]=SBUF;〃将接收到的数据到缓冲区内 TimeInterval=0;
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