///////////////////////////////////////////////////////////////////// //FgModBus: Library for EroElectronic Instruments with ModBus // protocol. //by SofTech di Germinara Francesco //Softech di Germinara - Via Maestra n.2 - 10064 Pinerolo (TO) ITALY //www.germinara.it - franco@germinara.it - Tel. +390121339015 ///////////////////////////////////////////////////////////////////// //Version: 1.0.0 //Last Update: 14/07/2002 ///////////////////////////////////////////////////////////////////// //Comments: free use. // // // ///////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "CBseModBus.h" #define CalcolaCRC16(ch, crc) (crc_16_tabella[((crc) ^ (ch)) & 0xff] ^ ((crc) >> 8)) //Table for calculate CRC-16 unsigned short int crc_16_tabella[] = { /* CRC polynomial 0xA001 */ 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, 0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, 0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, 0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, 0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040, }; CBseModBus::CBseModBus(){ m_nDelay=500; } CBseModBus::~CBseModBus(){ } // 16 15 2 //Errore Check CRC-16 Polinomio: X + X + X + 1 unsigned short int CBseModBus::BuildCRC16(unsigned char addr,unsigned char fcode,unsigned short int devAddr,unsigned char *data,int nBytes){ register crc16; register int c; register int nIndex; word.dw = devAddr; crc16 = 0xffff; c = addr; crc16 = CalcolaCRC16(c, crc16); c = fcode; crc16 = CalcolaCRC16(c, crc16); c = word.byte.msb; crc16 = CalcolaCRC16(c, crc16); c = word.byte.lsb; crc16 = CalcolaCRC16(c, crc16); for(nIndex =0;nIndex PutPacket(vt,(long)pos); SafeArrayDestroy(psa); Sleep(m_nDelay); if(nBytesTrasmitted == pos) return true; else return false; } bool CBseModBus::ReceivePacketToSlave(CSicommctrl1 *m_pSiCommEro){ long nBytes=0; VARIANT vt; LONG ix[1]; bool sts=0; memset(rxbuffer,0x00,MAX_RX_BUF_SIZE-1); SAFEARRAYBOUND sab[1]={MAX_RX_BUF_SIZE-1,0}; SAFEARRAY *psa = SafeArrayCreate(VT_UI1,1,sab); VariantInit(&vt); vt.vt = VT_ARRAY|VT_UI1; vt.parray = psa; nBytes=m_pSiCommEro->GetPacket(vt); if(nBytes == 0){ sts=false; m_nBytesInRXBuffer=0; }else{ unsigned char valore=0; long Index=0; m_nBytesInRXBuffer=nBytes; for(Index=0; Index < nBytes; Index++){ ix[0]=Index; SafeArrayGetElement(vt.parray,ix,&valore); rxbuffer[Index]=valore; } sts=true; } SafeArrayDestroy(psa); return sts; } //Imposto il valore del bit specificato void CBseModBus::SetBit(int nBit,BOOL sts){ if(nBit<0) return; //NOP dato.byte=word.byte.msb; switch(nBit){ case 0: dato.bit.b0=sts; break; case 1: dato.bit.b1=sts; break; case 2: dato.bit.b2=sts; break; case 3: dato.bit.b3=sts; break; case 4: dato.bit.b4=sts; break; case 5: dato.bit.b5=sts; break; case 6: dato.bit.b6=sts; break; case 7: dato.bit.b7=sts; break; } word.byte.msb=dato.byte; dato.byte=word.byte.lsb; switch(nBit){ case 8: dato.bit.b0=sts; break; case 9: dato.bit.b1=sts; break; case 10: dato.bit.b2=sts; break; case 11: dato.bit.b3=sts; break; case 12: dato.bit.b4=sts; break; case 13: dato.bit.b5=sts; break; case 14: dato.bit.b6=sts; break; case 15: dato.bit.b7=sts; break; } word.byte.lsb=dato.byte; } //Imposto il valore del bit specificato void CBseModBus::SetBit(CString strNBit,BOOL sts){ int nBit=0; if(strNBit.IsEmpty() || strNBit==" ") return; //NOP nBit=atoi(strNBit); SetBit(nBit,sts); } //Restituisce il valore del bit specificato BOOL CBseModBus::GetBit(int nBit){ if(nBit<0) return 2; //Led Disabilitato if(nBit<8){ dato.byte=word.byte.msb; switch(nBit){ case 0: return dato.bit.b0; case 1: return dato.bit.b1; case 2: return dato.bit.b2; case 3: return dato.bit.b3; case 4: return dato.bit.b4; case 5: return dato.bit.b5; case 6: return dato.bit.b6; case 7: return dato.bit.b7; default: return FALSE; } }else{ dato.byte=word.byte.lsb; switch(nBit){ case 8: return dato.bit.b0; case 9: return dato.bit.b1; case 10: return dato.bit.b2; case 11: return dato.bit.b3; case 12: return dato.bit.b4; case 13: return dato.bit.b5; case 14: return dato.bit.b6; case 15: return dato.bit.b7; default: return FALSE; } } } //Restituisce il valore del bit specificato BOOL CBseModBus::GetBit(CString strNBit){ int nBit=0; if(strNBit.IsEmpty() || strNBit==" ") return 2; //Led Disabilitato nBit=atoi(strNBit); return GetBit(nBit); } //Check replay message int CBseModBus::CheckPacketForError(bool stsSend,bool stsReceive){ int nErrorCode=0; if(!stsSend) return MODBUS_TX_ERROR; if(!stsReceive) return MODBUS_RX_ERROR; //Check CRC-16 if(m_nBytesInRXBuffer<=2) return MODBUS_BUFFER_RX_ERROR; unsigned short int crc=BuildCRC16(rxbuffer,m_nBytesInRXBuffer-2); word.byte.msb = rxbuffer[m_nBytesInRXBuffer-1]; word.byte.lsb = rxbuffer[m_nBytesInRXBuffer-2]; if(crc != word.dw) return MODBUS_CRC_ERROR; dato.byte = rxbuffer[1]; //Get Function Code: if(dato.bit.b7){ //Error... nErrorCode = rxbuffer[2]; //Get Function Code: switch(nErrorCode){ case 2: return MODBUS_ILLEGAL_ADDRESS_ERROR; case 3: return MODBUS_ILLEGAL_DATA_VALUE_ERROR; case 9: return MODBUS_ILLEGAL_NUMBER_OF_DATA_REQUIRED_ERROR; case 10: return MODBUS_BIT_CANNOT_BE_MODIFIED_ERROR; case 255: return MODBUS_CONTROL_PARAMETER_ERROR; default: return MODBUS_UNKNOW_ERROR+nErrorCode; } } return MODBUS_NO_ERROR; } //Decode Error code CString CBseModBus::DecodeError(int nErrorCode){ CString strError(""); CString strBuffer; CString strFit; bool bError=false; unsigned char saddr=rxbuffer[0]; unsigned char fcode=rxbuffer[1]; dato.byte=fcode; dato.bit.b7=0; fcode=dato.byte; strBuffer.Format("\n\nIndirizzo Strumento: [%d-%xh] - Funzione: [%d-%xh]\n\nBytes ",saddr,saddr,fcode,fcode); for(long int nIndex=0; nIndex< m_nBytesInRXBuffer;nIndex++){ strFit.Format("%d[%x] ",nIndex,rxbuffer[nIndex]); strBuffer+=strFit; } strBuffer+="\n\nEnd.\n\nComando Richiesto:\n"; if(nErrorCode > MODBUS_UNKNOW_ERROR){ strError.Format("Errore non identificato: Codice (Dec.): %d (Hex.): %x",nErrorCode - MODBUS_UNKNOW_ERROR,nErrorCode - MODBUS_UNKNOW_ERROR); strError+=strBuffer; return strError; } switch(nErrorCode){ case MODBUS_NO_ERROR: strError=""; bError=false; break; case MODBUS_TX_ERROR: strError="Errore in Trasmissione"; bError=true; break; case MODBUS_RX_ERROR: strError="Errore in Ricezione"; bError=true; break; case MODBUS_CRC_ERROR: strError="Errore CRC"; bError=true; break; case MODBUS_ILLEGAL_ADDRESS_ERROR: strError="Indirizzo non valido"; bError=true; break; case MODBUS_ILLEGAL_DATA_VALUE_ERROR: strError="Valore non valido"; bError=true; break; case MODBUS_ILLEGAL_NUMBER_OF_DATA_REQUIRED_ERROR: strError="Numero di dati richiesti non validi"; bError=true; break; case MODBUS_BIT_CANNOT_BE_MODIFIED_ERROR: strError="Il bit non puņ essere modificato"; bError=true; break; case MODBUS_CONTROL_PARAMETER_ERROR: strError="Errore nel parametro di controllo"; bError=true; break; case MODBUS_BUFFER_RX_ERROR: strError="Errore buffer ricezione"; bError=true; break; case MODBUS_ILLEGAL_SETPOINT_DATA_VALUE_ERROR: strError="Valore di SetPoint non consentito."; strError+=m_strLastEECommand; return strError; case MODBUS_BYTES_DONT_MATCH: strError="Numero di bytes ricevuti non corrispondenti a quelli richiesti."; strError+=m_strLastEECommand; return strError; } if(bError){ strError+=strBuffer; strError+=m_strLastEECommand; } return strError; } ///////////////////////////////////////////////////////////////////////// //ERO ELECTRONIC SPECIFIC COMMAND ///////////////////////////////////////////////////////////////////////// //SET REMOTE int CBseModBus::EE_SetRemote(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,bool sts){ //Set Remote Mode unsigned char comando=MODBUS_FUNCT_WRITE_BIT; //WRITE BIT unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=0x0a; //Bit Address 10: bool stsSend=false,stsReceive=false; int nBytes=0; //For Error decode info m_strLastEECommand.Format("EE_SetRemote: Indirizzo: [%d-%xh] Valore: [%d]",slave_addr,slave_addr,sts); //Set Bit ON or OFF if(sts==true) databuf[nBytes++] = 0xff; else databuf[nBytes++] = 0x00; databuf[nBytes++] = 0x00; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); return CheckPacketForError(stsSend,stsReceive); } //SET SETPOINT int CBseModBus::EE_SetSetPoint(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,double valSP){ unsigned char comando=MODBUS_FUNCT_WRITE_WORD; //WRITE WORD unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=0x01; //Word Address 1: bool stsSend=false,stsReceive=false; int nBytes=0; //For Error decode info m_strLastEECommand.Format("EE_SetSetPoint: Indirizzo: [%d-%xh] Valore: [%5.1f]",slave_addr,slave_addr,valSP); if(valSP>10.0 && valSP <=999.9) word.dw = (unsigned int) (valSP*10); //Elimino la virgola else return MODBUS_ILLEGAL_SETPOINT_DATA_VALUE_ERROR; databuf[nBytes++] = word.byte.msb; databuf[nBytes++] = word.byte.lsb; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); return CheckPacketForError(stsSend,stsReceive); } //GET SETPOINT int CBseModBus::EE_GetSetPoint(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,double *valSP){ unsigned char comando=MODBUS_FUNCT_READ_WORD; //READ WORD unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=0x01; //Word Address 1: bool stsSend=false,stsReceive=false; int nBytes=0; int sts=0; *valSP=0.0; //For Error decode info m_strLastEECommand.Format("EE_GetSetPoint: Indirizzo: [%d-%xh] ",slave_addr,slave_addr); //Numero di Word da Leggere word.dw = 1; databuf[nBytes++] = word.byte.msb; databuf[nBytes++] = word.byte.lsb; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); sts=CheckPacketForError(stsSend,stsReceive); if(sts==MODBUS_NO_ERROR){ //Get Value word.byte.msb=rxbuffer[3]; word.byte.lsb=rxbuffer[4]; *valSP=word.dw / 10.0; } return sts; } //GET CURRENT TEMPERATURE int CBseModBus::EE_GetTemperature(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,double *valTEMP){ unsigned char comando=MODBUS_FUNCT_READ_WORD; //READ WORD unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=0x00; //Word Address 0: bool stsSend=false,stsReceive=false; int nBytes=0; int sts=0; *valTEMP=0.0; //For Error decode info m_strLastEECommand.Format("EE_GetTemperature: Indirizzo: [%d-%xh] ",slave_addr,slave_addr); //Numero di Word da Leggere word.dw = 1; databuf[nBytes++] = word.byte.msb; databuf[nBytes++] = word.byte.lsb; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); sts=CheckPacketForError(stsSend,stsReceive); if(sts==MODBUS_NO_ERROR){ //Get Value word.byte.msb=rxbuffer[3]; word.byte.lsb=rxbuffer[4]; *valTEMP=word.dw / 10.0; } return sts; } //GET DEVICE STATUS BITS int CBseModBus::EE_GetDeviceStatus(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,BOOL& bAlmSCA,BOOL& bAlm1,BOOL& bAlm2,BOOL& bChangedOccurred,BOOL& bTune,BOOL& bAdaptive,BOOL& bLock,BOOL& bControlMode,BOOL& bLocal,BOOL& bAuto,BOOL& bCtrlEnabled,BOOL& bSmart){ unsigned char comando=MODBUS_FUNCT_READ_NBITS; //READ N BITS unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=200; //start bit Address bool stsSend=false,stsReceive=false; int nBytes=0; int sts=0; //For Error decode info m_strLastEECommand.Format("EE_GetDeviceStatus: Indirizzo: [%d-%xh] ",slave_addr,slave_addr); //Numero di Bits da Leggere word.dw = 24; databuf[nBytes++] = word.byte.msb; databuf[nBytes++] = word.byte.lsb; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); sts=CheckPacketForError(stsSend,stsReceive); if(sts==MODBUS_NO_ERROR){ //Get Value int nBytes=rxbuffer[2]; //Bytes Count if(nBytes == 3){ dato.byte=rxbuffer[3]; bAlmSCA = dato.bit.b0; //200 bAlm1 = dato.bit.b1; //201 bAlm2 = dato.bit.b2; //202 //203 //204 //205 //206 //207 dato.byte=rxbuffer[4]; //208 //209 bChangedOccurred = dato.bit.b2; //210 bTune = dato.bit.b3; //211 bAdaptive = dato.bit.b4; //212 bLock = dato.bit.b5; //213 bControlMode = dato.bit.b6; //214 //215 dato.byte=rxbuffer[5]; //216 //217 bLocal = dato.bit.b2; //218 bAuto = dato.bit.b3; //219 bCtrlEnabled = dato.bit.b4; //220 bSmart = dato.bit.b5; //221 //222 //223 //224 }else{ sts=MODBUS_BYTES_DONT_MATCH; } } return sts; } //Set Bit for change device status int CBseModBus::EE_SetDeviceStatus(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,BOOL bLocal,BOOL bAuto,BOOL bCtrlEnabled,BOOL bSmart,BOOL bManualAlmRst,BOOL bLoadDefault,BOOL bEnableConfigMode){ unsigned char comando=MODBUS_FUNCT_WRITE_NBITS; //WRITE N BITS unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=218; //start bit Address bool stsSend=false,stsReceive=false; int nBytes=0; int sts=0; //For Error decode info m_strLastEECommand.Format("EE_SetDeviceStatus: Indirizzo: [%d-%xh] ",slave_addr,slave_addr); //Numero di Bits da scrivere word.dw = 8; databuf[nBytes++] = word.byte.msb; databuf[nBytes++] = word.byte.lsb; databuf[nBytes++] = 0x01; //Bytes Counter //Set Bits dato.bit.b0=bLocal; //218 dato.bit.b1=bAuto; //219 dato.bit.b2=bCtrlEnabled; //220 dato.bit.b3=bSmart; //221 dato.bit.b4=bManualAlmRst; //222 dato.bit.b5=bLoadDefault; //223 dato.bit.b6=bEnableConfigMode; //224 dato.bit.b7=0; databuf[nBytes++] = dato.byte; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); sts=CheckPacketForError(stsSend,stsReceive); return sts; } //Get the current AlmX threshold int CBseModBus::EE_GetAlm(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,unsigned char nAlm,double *valSP){ unsigned char comando=MODBUS_FUNCT_READ_WORD; //READ WORD unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=0; //Word Address bool stsSend=false,stsReceive=false; int nBytes=0; int sts=0; if(nAlm==0x01) devAddr=12; else devAddr=13; *valSP=0.0; //For Error decode info m_strLastEECommand.Format("EE_GetAlm: Indirizzo: [%d-%xh] Alm%d",slave_addr,slave_addr,48+nAlm); //Numero di Word da Leggere word.dw = 1; databuf[nBytes++] = word.byte.msb; databuf[nBytes++] = word.byte.lsb; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); sts=CheckPacketForError(stsSend,stsReceive); if(sts==MODBUS_NO_ERROR){ //Get Value word.byte.msb=rxbuffer[3]; word.byte.lsb=rxbuffer[4]; *valSP=word.dw / 10.0; } return sts; } //set the current AlmX threshold int CBseModBus::EE_SetAlm(CSicommctrl1 *m_pSiCommEro,unsigned char slave_addr,unsigned char nAlm,double valSP){ unsigned char comando=MODBUS_FUNCT_WRITE_WORD; //WRITE WORD unsigned char databuf[MAX_MODBUS_BUF_SIZE]; unsigned short int devAddr=0; //Word Address 1: bool stsSend=false,stsReceive=false; int nBytes=0; if(nAlm==0x01) devAddr=12; else devAddr=13; //For Error decode info m_strLastEECommand.Format("EE_SetAlm: Indirizzo: [%d-%xh] Valore: [%5.1f]",slave_addr,slave_addr,valSP); if(valSP>=0.0 && valSP <=999.9) word.dw = (unsigned int) (valSP*10); //Elimino la virgola else return MODBUS_ILLEGAL_SETPOINT_DATA_VALUE_ERROR; databuf[nBytes++] = word.byte.msb; databuf[nBytes++] = word.byte.lsb; PraparePacket(slave_addr,comando,devAddr,databuf,nBytes); stsSend=SendPacketToSlave(m_pSiCommEro); stsReceive=ReceivePacketToSlave(m_pSiCommEro); return CheckPacketForError(stsSend,stsReceive); } //Fine