modbusframe.h

一个通讯管理机的源代码。比较好用。推荐

#ifndef _MODBUSFRAME_H
#define _MODBUSFRAME_H

#include "msystem.h"

class CModbusFrame : public CFrame
{
public:
	CModbusFrame(bool bIsSlave = false) {m_wEchoLen = 8; m_bIsSlave = bIsSlave;}
	bool FrameToBuffer(CDataNode &dn);
	bool BufferToFrame(CDQue* pPhyDQ);
	void SetupFrame(CFrameNode *pFNSend);
	void FrameToBuf(CFrameNode& fn);
	WORD GetSize()
	{
		if (m_bIsSetup)	return (4+m_wLength);
		else return 0;
	}
	WORD GetEchoLen() {return m_wEchoLen;}
	void SetEchoLen(WORD wEchoLen) {m_wEchoLen = wEchoLen;}
protected:
	WORD m_wCHKSUM;
	BYTE	m_byCID;
private:
	WORD	m_wEchoLen;
	bool	m_bIsSlave;

};

#endif