若該文為原創文章，轉載請註明原文出處 本文章部落格地址：http://blog.csdn.net/qq21497936/article/details/117398968

紅胖子(紅模仿)的博文大全：開發技術集合（包含Qt實用技術、樹莓派、三維、OpenCV、OpenGL、ffmpeg、OSG、微控制器、軟硬結合等等）持續更新中...（點選傳送門）

合作案例專欄：案例分享（體驗Demo可下載，只定制）

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前言

  西門子PLC、臺達PLC、法蘭克機床等等多年以前玩得比較多，有tcp/ip通訊也有modbus通訊，modbus又分為網路，485，232等。   醫療專案，焊接機器人專案，工控機床專案，數控專案，物聯網專案用的挺多的，將關鍵的通訊技術抽離出來，單獨弄成工具。

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需求

  與各種其他行業儀器通訊軟體開發的通訊核心模組，modbus功能模組，製作成除錯工具，可滿足一般情況的除錯。   1.支援通過串列埠232,485埠進行通訊；   2.支援設定開啟埠的引數；   3.支援寫入bool，int，dInt，real，dReal引數型別資料；   4.支援讀取bool，int，dInt，real，dReal引數型別資料；   5.增加10種主題風格切換（僅用於預選擇主題風格）；

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Demo

           

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工具下載地址

  CSDN（0積分下載）：http://download.csdn.net/download/qq21497936/19236703 QQ群：1047134658（點選“檔案”搜尋“plcModbus ”，群內與博文同步更新）

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十種主題風格切換

  

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相關標頭檔案原始碼

PlcModbusMasterWidget.h

#ifndef PLCMODBUSMASTERWIDGET_H
#define PLCMODBUSMASTERWIDGET_H

#include <QWidget>
#include <QThread>
#include <QDateTime>
#include <QElapsedTimer>
#include <QHash>
#include <QFile>
#include <QMessageBox>
#include <QAbstractButton>
#include "ModbusManager.h"

namespace Ui {
class PlcModbusMasterWidget;
}

class PlcModbusMasterWidget : public QWidget
{
    Q_OBJECT

public:
    explicit PlcModbusMasterWidget(QWidget *parent = 0);
    ~PlcModbusMasterWidget();

protected slots:
    void slot_opened(bool opened);
    void slot_readBitsResult(bool result, int startAddr, QList<bool> listBool);
    void slot_readIntsResult(bool result, int startAddr, QList<int> listInt);
    void slot_readDIntsResult(bool result, int startAddr, QList<int> listInt);
    void slot_readRealsResult(bool result, int startAddr, QList<float> listFloat);
    void slot_readDRealsResult(bool result, int startAddr, QList<double> listDouble);

    void slot_writeBitsResult(bool result, int startAddr, QList<bool> listBool);
    void slot_writeIntsResult(bool result, int startAddr, QList<int> listInt);
    void slot_writeDIntsResult(bool result, int startAddr, QList<int> listInt);
    void slot_writeRealsResult(bool result, int startAddr, QList<float> listFloat);
    void slot_writeDRealsResult(bool result, int startAddr, QList<double> listDouble);

private slots:
    void on_comboBox_writeType_currentIndexChanged(int index);

    void on_lineEdit_readStartAddr_textChanged(const QString &arg1);
    void on_lineEdit_writeStartAddr_textChanged(const QString &arg1);
    void on_lineEdit_readStartAddrHex_textChanged(const QString &arg1);
    void on_lineEdit_writeStartAddrHex_textChanged(const QString &arg1);

protected slots:
    void slot_buttonClicked(int index);

private slots:
    void on_pushButton_open_clicked();
    void on_pushButton_close_clicked();
    void on_pushButton_read_clicked();
    void on_pushButton_write_clicked();
    void on_pushButton_clearM_clicked();

private:
    Ui::PlcModbusMasterWidget *ui;

    QThread *_pModbusManagerThread;
    QElapsedTimer _elapsedTimer;

    QHash<int, QString> _hashInt2Str;
};

#endif // PLCMODBUSMASTERWIDGET_H

ModbusManager.h

#ifndef MODBUSMANAGER_H
#define MODBUSMANAGER_H

#include <QObject>
#include <QMutex>

class ModbusManager : public QObject
{
    Q_OBJECT
private:
    explicit ModbusManager(QObject *parent = 0);

public:
    bool testEnvAndRtu();

public:
    static ModbusManager *getInstance();

public:
    void setPortName(const QString &portName);
    void setBaud(int baud);
    void setParity(char parity);
    void setDataBit(int dataBit);
    void setStopBit(int stopBit);
    void setTimeOutMs(int timeOutMs);
    void setSlaveAddr(int slaveAddr);

public:
    QString getPortName() const;
    int getBaud() const;
    char getParity() const;
    int getDataBit() const;
    int getStopBit() const;
    int getTimeOutMs() const;
    int getSlaveAddr() const;

signals:
    void signal_opened(bool opened);

    void signal_readBitsResult(bool result, int startAddr, QList<bool> listBool);
    void signal_readIntsResult(bool result, int startAddr, QList<int> listInt);
    void signal_readDIntsResult(bool result, int startAddr, QList<int> listInt);
    void signal_readRealsResult(bool result, int startAddr, QList<float> listFloat);
    void signal_readDRealsResult(bool result, int startAddr, QList<double> listDouble);

    void signal_writeBitsResult(bool result, int startAddr, QList<bool> listBool);
    void signal_writeIntsResult(bool result, int startAddr, QList<int> listInt);
    void signal_writeDIntsResult(bool result, int startAddr, QList<int> listInt);
    void signal_writeRealsResult(bool result, int startAddr, QList<float> listFloat);
    void signal_writeDRealsResult(bool result, int startAddr, QList<double> listDouble);

public slots:
    void slot_start();
    void slot_stop();
    void slot_open();
    void slot_close();

    void slot_readBits(int startAddr, int size);
    void slot_readInts(int startAddr, int size);
    void slot_readDInts(int startAddr, int size);
    void slot_readReals(int startAddr, int size);
    void slot_readDReals(int startAddr, int size);

    void slot_writeBits(int startAddr, QList<bool> listBool);
    void slot_writeInts(int startAddr, QList<int> listInt);
    void slot_writeDInts(int startAddr, QList<int> listInt);
    void slot_writeReals(int startAddr, QList<float> listFloat);
    void slot_writeDReals(int startAddr, QList<double> listDouble);

private:
    static ModbusManager *_pInstance;
    static QMutex _mutex;

private:
    QString _portName;
    int _baud;
    char _parity;
    int _dataBit;
    int _stopBit;
    int _timeOutMs;
    int _slaveAddr;

private:
    bool _running;
    bool _opened;
};

#endif // MODBUSMANAGER_H

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若該文為原創文章，轉載請註明原文出處 本文章部落格地址：http://blog.csdn.net/qq21497936/article/details/117398968