modbus.h

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// Modbus.h: interface for the CModbus class.
//
//////////////////////////////////////////////////////////////////////

#ifndef _MODBUS_H_
#define _MODBUS_H_

#include "SerialPort.h"

class CModbus : public CSerialPort  
{
public:
	CModbus();
	virtual ~CModbus();
public:
	char MODBUS_S_ReadMultiRegD(unsigned char rtu, unsigned short int RegAdd, unsigned short int RegCount, short int *list);
	char MODBUS_S_ReadMultiRegM(unsigned char rtu, unsigned short int RegAdd, unsigned short int RegCount, bool *list);
	char MODBUS_S_WriteSingRegD(unsigned char rtu, unsigned short int RegAdd, short int var);
	char MODBUS_S_WriteSingRegM(unsigned char rtu, unsigned short int RegAdd, bool var);

private:
	unsigned short CalcCrcFast(unsigned char*puchMsg,unsigned short usDataLen);
};

#endif