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Modbus封装库(Com,tcp,udp一应俱全)

news 2025/9/15 11:16:28

自行封装在用的Modbus通迅库,集成了com,tcp,udp, 做个笔记吧，以下头文件，

#pragma once
#include <functional>
#include <vector>
#include <string>
#include <memory>
#ifdef LIBMODBUS_EXPORTS
#define LIBMODBUS_EXPORT_API __declspec(dllexport)
#else
#define LIBMODBUS_EXPORT_API __declspec(dllimport)
#endif
class LIBMODBUS_EXPORT_API RTUModbus {

public:
   //devflag is 1 as default value
   RTUModbus();
   ~RTUModbus();
public:
   std::string getAddrPLC();
   uint16_t getDevflag();
   int getPort();
   void sendBit(uint16_t addrstart, bool mvalue);
   bool readBit(uint16_t addrstart, uint8_t* destBit);
   void sendDataRegister(uint16_t addrstart, uint16_t mvalue);
   void sendDataRegisters(uint16_t addrstart, uint16_t* mvalue);
   void sendDataRegisters(uint16_t addrstart,const int len, uint16_t* mvalue);

bool readDataRegisters(uint16_t addrstart, uint16_t* destBit);

   bool readDataRegisters(uint16_t addrstart,const int len, uint16_t* destBit);
   bool isConnected();
   void setPLCParam(const int mport, std::string ipra);
   void disconnect();
   bool connectPLCbyNet(const int port, const int devflag, std::string addr);
   bool connectPLC(const int devflag);
   //mport :com1 ,flag:0 Rs232,1:RS485
   bool connectPLCbySerial(const char * mport, const int flag, const int baud = 115200,
       char parity = 'N', const int data_bit = 8, const int stopbit = 1);
   bool connectTo_UDP(std::string strIP, const int mport);

private:
std::shared_ptr<void> _modClient;
};

应用标例：

RTUModbus* mBus=new RTUModbus();

网口连接：

//tcp:

bool res=mBus->connectPLCbyNet(9000,1,"192.168.3.58");

//udp

bool res=connectTo_UDP("192.168.3.58",9000);

串口：

bool res=connectPLCbySerial("com1",1,115200);

读写方式，三者（串口、网口tcp,udp）都是共用的

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