MODBUS通訊+C語言源代碼

1、共享知識分享快樂/* */修改日志：*2006-3-7 14:59 Ver. 1.00函數(shù)名稱：strmcpy()* 輸入?yún)?shù)：共個參數(shù)；* 輸出參數(shù)：共個參數(shù)；* 返回值：* 需儲存的參數(shù)：共個參數(shù);* 功能介紹:(1)字符數(shù)組拷貝；* 修改日志：* 2006-3-6 17:07 Ver. 1.00開始編寫； 完成；*/*產(chǎn)*/void strmcpy(unsigned char dest口，unsigned char src口，int count) int i;for(i = 0; i < count; i +) desti = srci;desti = '0' /*

2、 */*/*函數(shù)名稱:bitmcpy()* 輸入?yún)?shù)：共個參數(shù)；* 輸出參數(shù)：共個參數(shù)；* 返回值：* 需儲存的參數(shù)：共個參數(shù)；* 功能介紹:(1)開關量數(shù)組拷貝；卑微如蟋蟻、堅強似大象共享知識分享快樂卑微如螻蟻、堅強似大象開始編寫；完成；/*/*/*/void bitmcpy(int dest, int src, int count) int i;for(i = 0; i < count; i +) desti = srci;/*/*/* 函數(shù)名稱: strmcmp()輸入?yún)?shù)：輸出參數(shù)：個參數(shù)；個參數(shù)；* 返回值：需儲存的參數(shù)：功能介紹：個參數(shù)；(1) 字符數(shù)組比較；相同則返回0，不

3、相同則返回1；修改日志：2006-3-6 17:41Ver. 1.00開始編寫； 完成；*/*/*/ int strmcmp(unsigned char str1, unsigned char str2, int count) int i;for(i = 0; i < count; i +)if(str1i != str2i)return 1;return 0;/* I/*/* 函數(shù)名稱: Datamcmp()* 輸入?yún)?shù)：共個參數(shù)；* 輸出參數(shù)：共個參數(shù)；* 返回值：* 需儲存的參數(shù)：共 個參數(shù)；* 功能介紹：(1) 浮點數(shù)組比較；相同則返回0，不相同則返回1；* 修改日志：*2006

4、-3-6 18:05 Ver. 1.00 開始編寫；完成；*2006-3-9 13:52 加了一層括號，以前是錯誤的 if(!(data1i - data2i < 0.0001) &&(data1i- data2i*/-0.0001) /*/*/int Datamcmp(float data1, float data2, int count)int i;for(i = 0; i < count; i +)if(!(data1i - data2i < 0.0001) &&(data1i- data2i-0.0001)共享知識分享快樂卑微如螻蟻、堅

5、強似大象return 1;return 0;/*/ /*/* 函數(shù)名稱: Bitmcmp()個參數(shù)；個參數(shù)；個參數(shù)；輸入?yún)?shù)： 輸出參數(shù)：* 返回值：需儲存的參數(shù)： 功能介紹：(1) 開關量數(shù)組比較；相同則返回0，不相同則返回1；修改日志：2006-3-6 18:10Ver. 1.00開始編寫；完成；*/*/*/ int Bitmcmp(int data1, int data2, int count) int i;for(i = 0; i < count; i +) if(data1i != data2i) return 1;return 0;/*/*/* 函數(shù)名稱: GetCRC16(

6、)* 輸入?yún)?shù)：共個參數(shù)；* 輸出參數(shù)：共個參數(shù)；* 返回值：* 需儲存的參數(shù)：共 個參數(shù)；* 功能介紹：(1)CRC16 校驗； 返回校驗碼；* 修改日志：*2005-11-28 16:40Ver. 1.00開始編寫；完成；*/*/* unsigned short GetCRC16(unsigned char *puchMsg, unsigned short usDataLen)*/* CRC 高位字節(jié)值表*/unsigned char auchCRCHi256 = 0x00,0xC1, 0x81, 0x40, 0x01,0xC0, 0x80, 0x41,0x01,0xC0,0x80,0x4

7、1, 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,

8、 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, 0xC1,0x81,0x40,0x0

9、0,0xC1, 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,

10、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, 0xC

11、0, 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 ;unsigned char auchCRCLo256 = 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4

12、, 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

13、, 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

14、, 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

15、, 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

16、, 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 ;unsigned char uchCRCHi = 0xFF ; /*高 CRC?節(jié)初始化 */unsig

17、ned char uchCRCLo = 0xFF ; /*低 CRC字節(jié)初始化 */unsigned uIndex = 0; /* CRC 循環(huán)中的索引*/while (usDataLen-) /*傳輸消息緩沖區(qū)*/共享知識分享快樂ulndex = uchCRCHi A *puchMsg+ ; /* 計算 CRC */ uchCRCHi = uchCRCLo a auchCRCHiuIndex;uchCRCLo = auchCRCLouIndex ;return (unsigned short)(unsigned short)uchCRCHi << 8 |uchCRCLo) ;/*

18、 */*/* 函數(shù)名稱:SendRtuCmdToModBus()個參數(shù)；個參數(shù)；輸入?yún)?shù)： 輸出參數(shù)：* 返回值：需儲存的參數(shù)：共功能介紹：個參數(shù)；卑微如螻蟻、堅強似大象(1)發(fā)送 ModBus RTU指令至U Modbus Slave,力口上 CRC1皎驗碼；修改日志：2005-11-28 16:40Ver. 1.00開始編寫；完成；*2006-3-1 9:02返回類型改為void ；*/*/*/ void SendRtuCmdToModBus(intModPort, unsigned char cmd, unsigned short len)unsigned short CRC16;CRC

19、16=GetCRC16(cmd,len);ToComBufn(ModPort,cmd,len);/* send/* sendToCom(ModPort, (unsigned char)(CRC16 >> 8 & 0x00FF);CRC16 high */ToCom(ModPort, (unsigned char)(CRC16 & 0x00FF);CRC16 low */*/*/* 函數(shù)名稱:輸入?yún)?shù)：輸出參數(shù)：* 返回值：ReadModBusRtuSlave()共 8 個參數(shù)；共 5 個參數(shù)；成功與否1 ：成功，2 ：失敗；需儲存的參數(shù)：共 0 個參數(shù)；功能介紹：(

20、1)讀取ModBusRtuSlave,并解碼輸出反饋字符串相關內(nèi)容;ReadModBusRtuSlave(COMPORT1, ModAddr, ModFunction, ModByteNum,ModData, &ModDataLen, ModTimeout=10,waitTime=30)修改日志：2005-11-28 16:40Ver. 1.00開始編寫；完成；*2006-3-1 9:23增加了 int counter = 0;unsigned char ModBusMessageMOD_STR_MAX_LEN;*2006-3-1 13:46增加了 strmcpy(ModData, M

21、odBusMessage + 3, ModBusIdx -5);*/*/*/ int ReadModBusRtuSlave(int ModPort, unsigned char *ModAddr, unsigned char *ModFunction, unsigned char *ModByteNum,unsigned char ModData, unsigned char *ModDataLen, unsigned ModTimeout, unsigned waitTime)unsigned char data;unsigned long t;int i;unsigned short CR

22、C16;int ModBusIdx = 0;int counter = 0;unsigned char ModBusMessageMOD_STR_MAX_LEN = '0'while(!(IsCom(ModPort) && (counter < waitTime)DelayMs(1);counter +;StopWatchStart(MODBUS_STOP_WATCH);dowhile(IsCom(ModPort) &&(ModBusIdx < MOD_STR_MAX_L-E1N) data = ReadCom(ModPort);Mo

23、dBusMessageModBusIdx +=data;StopWatchStart(MODBUS_STOP_WATCH);/*Print("%02X",data); */StopWatchReadValue(MODBUS_STOP_WATCH, &t);while(t <= ModTimeout);if (ModBusIdx = 0) return 0;ModBusMessageModBusIdx = '0'StopWatchStop(MODBUS_STOP_WATCH);CRC16 = GetCRC16(ModBusMessage,ModB

24、usIdx - 2);/* for(i=0; i> 8 & 0x00FF) = ModBusMessageModBusIdx - 2 &&(unsigned char)(CRC16 & 0x00FF) = ModBusMessageModBusIdx - 1) *ModAddr = ModBusMessage0;*ModFunction = ModBusMessage1;*ModByteNum = ModBusMessage2;strmcpy(ModData, ModBusMessage + 3, ModBusIdx - 5);/* Print("

25、; idx%d ", ModBusIdx - 5); /*test*/* for(i = 3; i < ModBusIdx - 2; i+)ModDatai - 3 = ModBusMessagei;ModDatai = '0'*/*ModDataLen = ModBusIdx - 5;/* Print("DataLen=%dnr", *ModDataLen); */ return 1;else*ModDataLen = 0;return 0;/* CRC16 error */* Print("CRC16 Errornr"

26、); */*/*/* 函數(shù)名稱:ResponseFromModBusRtuSlave()* 輸入?yún)?shù)：共 8 個參數(shù)；* 輸出參數(shù)：共 5 個參數(shù)；* 返回值：成功與否1 ：成功，2 ：失??；* 需儲存的參數(shù)：共 0 個參數(shù)；* 功能介紹：(1)寫參數(shù)到 ModBusRtuSlave后，ModbusRtuSlave 反饋字符串;修改日志：2006-3-1 12:34Ver. 1.00開始編寫；*2006-3-1 12:48完成；*2006-3-6 16:32strcpy(totalStr, ModBusMessage);改為 strmcpy(totalStr, ModBusMessage, M

27、odBusIdx);*/*/* */ int ResponseFromModBusRtuSlave(int ModPort, unsigned char totalStr,unsigned char *ModAddr, unsigned char *ModFunction, unsigned short *ModDataAddr,unsigned short *ModDataNum, unsigned ModTimeout, unsignedwaitTime)unsigned char data;unsigned long t;unsigned short CRC16;int ModBusId

28、x = 0;int counter = 0;unsigned char ModBusMessageMOD_STR_MAX_LEN = '0'while(!(IsCom(ModPort) && (counter < waitTime)DelayMs(1);counter +;StopWatchStart(MODBUS_STOP_WATCH);dowhile(IsCom(ModPort) &&(ModBusIdx < MOD_STR_MAX_L-E1N) data = ReadCom(ModPort);ModBusMessageModBu

29、sIdx +=data;StopWatchStart(MODBUS_STOP_WATCH);/*Print("%02X",data); */StopWatchReadValue(MODBUS_STOP_WATCH, &t);while(t <= ModTimeout);if (ModBusIdx = 0) return 0;ModBusMessageModBusIdx = '0'strmcpy(totalStr, ModBusMessage, ModBusIdx);StopWatchStop(MODBUS_STOP_WATCH);CRC16 =

30、 GetCRC16(ModBusMessage,ModBusIdx - 2);if(unsigned char)(CRC16 >> 8 & 0x00FF) = ModBusMessageModBusIdx- 2 &&(unsigned char)(CRC16 & 0x00FF) = ModBusMessageModBusIdx- 1)*ModAddr = ModBusMessage0;*ModFunction = ModBusMessage1;*ModDataAddr = (unsigned short)(unsigned short)ModBusM

31、essage2 << 8 | ModBusMessage3);*ModDataNum = (unsigned short)(unsigned short)ModBusMessage4 << 8 | ModBusMessage5);return 1;elsereturn 0;/* CRC16 error */* Print("CRC16 Errornr"); */*/*/* 函數(shù)名稱:ResponseSingleBitFromModBus()* 輸入?yún)?shù)：共 8 個參數(shù)；* 輸出參數(shù)：共 5 個參數(shù)；* 返回值：成功與否1 ：成功，2 ：失敗；* 需儲

32、存的參數(shù)：共 0 個參數(shù)；* 功能介紹：(1)寫參數(shù)到 ModBusRtuSlave后，ModbusRtuSlave 反饋字符串;* 修改日志：*2006-3-7 14:40 Ver. 1.00開始編寫；*2006-3-7 14:40完成；*/*/*/ int ResponseSingleBitFromModBus(int ModPort, unsigned char totalStr,unsigned char *ModAddr, unsigned char *ModFunction, unsigned short *ModDataAddr,unsigned short *ModDataSt

33、ate, unsigned ModTimeout, unsignedwaitTime) unsigned char data;unsigned long t;unsigned short CRC16;int ModBusIdx = 0;int counter = 0;unsigned char ModBusMessageMOD_STR_MAX_LEN = '0'while(!(IsCom(ModPort) && (counter < waitTime) DelayMs(1);counter +;StopWatchStart(MODBUS_STOP_WATC

34、H); do while(IsCom(ModPort) &&(ModBusIdx < MOD_STR_MAX_L-E1N) data = ReadCom(ModPort);ModBusMessageModBusIdx +=data;StopWatchStart(MODBUS_STOP_WATCH);/*Print("%02X",data); */StopWatchReadValue(MODBUS_STOP_WATCH, &t);while(t <= ModTimeout);if (ModBusIdx = 0) return 0;ModBu

35、sMessageModBusIdx = '0'strmcpy(totalStr, ModBusMessage, ModBusIdx);StopWatchStop(MODBUS_STOP_WATCH);CRC16 = GetCRC16(ModBusMessage,ModBusIdx - 2);if(unsigned char)(CRC16 >> 8 & 0x00FF) = ModBusMessageModBusIdx- 2 &&(unsigned char)(CRC16 & 0x00FF) = ModBusMessageModBusId

36、x- 1)共享知識分享快樂*ModAddr = ModBusMessage0;*ModFunction = ModBusMessage1;*ModDataAddr = (unsigned short)(unsigned short)ModBusMessage2 << 8 | ModBusMessage3);if(ModBusMessage4) 輸入?yún)?shù)：共個參數(shù)；* 輸出參數(shù)：共個參數(shù)；* 返回值：無* 需儲存的參數(shù)：共 個參數(shù)；* 功能介紹：(1)將MODBUSSLAVE的數(shù)據(jù)字符轉(zhuǎn)化為參數(shù)值；(2) void *memcpy(void *dest, const void *sr

37、c, size_t n)(3) 四個字符的順序應倒一下。* 修改日志：*2006-3-1 14:10 Ver. 1.00開始編寫；*2006-3-1 14:35完成；*2006-3-6 15:57四個字符的順序應倒一下。ModDataState = 1;else *ModDataState = 0;return 1;elsereturn 0;/* CRC16 error */* Print("CRC16 Errornr"); */*/*/* 函數(shù)名稱:ChangeAllParameterDataByModBus()*/ 輸入?yún)?shù)：共個參數(shù)；* 輸出參數(shù)：共個參數(shù)；* 返回值

38、：無* 需儲存的參數(shù)：共 個參數(shù)；* 功能介紹：(1)將MODBUSSLAVE的數(shù)據(jù)字符轉(zhuǎn)化為按鈕值； /* */ void ChangeAllParameterDataByModBus(float parameterData, unsigned char ModDataBack, unsigned short num)int i;char singleStr5 = '0','0','0','0','0'float *pf;float dataf = 0;int len = 4;pf = &dataf;fo

39、r(i = 0; i < num; i +)singleStr0 = ModDataBacki * 4 + 3;singleStr1 = ModDataBacki * 4 + 2;singleStr2 = ModDataBacki * 4 + 1;singleStr3 = ModDataBacki * 4 ;singleStr4 = '0'memcpy(pf, singleStr, len);parameterDatai = *pf;/*Print("%-6.2ft", parameterDatai);/*test*/*/*/* 函數(shù)名稱:Change

40、AllButtonsDataByModBus()* 修改日志：*2006-3-1 14:03 Ver. 1.00開始編寫；*2006-3-1 14:10完成；*/*/* Ivoid ChangeAllButtonsDataByModBus(int buttonData, unsigned char ModDataBack, unsigned short num)unsigned char button8Data = 0;int i, j;for(j = 0; j < (int)(num / 8); j +)button8Data = ModDataBackj;for(i = 0; i &

41、lt; 8; i +)buttonDatai + j * 8 = (int)(button8Data & (int) pow(2, i) / (int) pow(2, i);button8Data = ModDataBackj;for(i = 0; i < num % 8; i +)buttonDatai + j * 8 = (int)(button8Data & (int) pow(2, i)/ (int) pow(2, i);/*/*/* 函數(shù)名稱:WordDataToModbusStr()* 輸入?yún)?shù)：共個參數(shù)；* 輸出參數(shù)：共個參數(shù)；* 返回值：無需儲存的參數(shù)：共

42、 個參數(shù)；功能介紹：(l)parameterData 或 AIData 轉(zhuǎn)化為 MODBUSSLAVEWORD的STR；(2) void *memcpy(void *dest, const void *src, size_t n)(3) 四個字符的順序應倒一下。* 修改日志：Ver. 1.00*2006-3-1 14:37開始編寫；*2006-3-1 14:49 完成；*2006-3-6 15:57 四個字符的順序應倒一下。*/*/*/ void WordDataToModbusStr(unsigned char writeCmdStr, float data, unsigned short

43、num, unsigned short startAddr)int i;char singleStr5 = '0','0','0','0','0'float *pf;unsigned char *pstr;float dataf = 0;int len = 4;pf = &dataf;pstr = singleStr;for(i = 0; i < num; i +)*pf = datai;memcpy(pstr, pf, len);writeCmdStrstartAddr + i * 4 + 3 =

44、singleStr0;writeCmdStrstartAddr + i * 4 + 2 = singleStr1;writeCmdStrstartAddr + i * 4 + 1 = singleStr2;writeCmdStrstartAddr + i * 4 = singleStr3;/*/卑微如螻蟻、堅強似大象共享知識分享快樂/*/* 函數(shù)名稱:BitDataToModbusStr()輸入?yún)?shù)：輸出參數(shù)：個參數(shù)；個參數(shù)；* 返回值：需儲存的參數(shù)：共功能介紹：(1)data個參數(shù)；轉(zhuǎn)化為 MODBUSSLAVEWORD的STR；修改日志：2006-3-1 14:51Ver. 1.00開始編

45、寫；*2006-3-1 15:02 完成；*/*/*/ void BitDataToModbusStr(unsigned char writeCmdStr, int data, unsigned short num, unsigned short startAddr)int i, j;unsigned char button8Data = 0;for(j = 0; j < (int)(num / 8); j +) button8Data = 0;for(i = 0; i < 8; i +) button8Data += datai + j * 8 * (int) pow(2, i);writeCmdStrstartAddr + j = button8Data;if(num % 8) button8Data = 0;for(i = 0; i < num % 8; i +) button8Data += datai + j * 8 * (int) pow