Modbus Master example

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>516</width>
    <height>378</height>
   </rect>
  </property>
  <property name="maximumSize">
   <size>
    <width>16777215</width>
    <height>1000</height>
   </size>
  </property>
  <property name="windowTitle">
   <string>Modbus Client Example</string>
  </property>
  <widget class="QWidget" name="centralWidget">
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <layout class="QGridLayout" name="gridLayout">
      <item row="0" column="5">
       <widget class="QLabel" name="label_27">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="text">
         <string>Server Address:</string>
        </property>
       </widget>
      </item>
      <item row="0" column="7">
       <widget class="QPushButton" name="connectButton">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="text">
         <string>Connect</string>
        </property>
        <property name="checkable">
         <bool>false</bool>
        </property>
        <property name="autoDefault">
         <bool>false</bool>
        </property>
        <property name="default">
         <bool>true</bool>
        </property>
       </widget>
      </item>
      <item row="0" column="4">
       <spacer name="horizontalSpacer">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>40</width>
          <height>20</height>
         </size>
        </property>
       </spacer>
      </item>
      <item row="0" column="6">
       <widget class="QSpinBox" name="serverEdit">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="minimum">
         <number>1</number>
        </property>
        <property name="maximum">
         <number>247</number>
        </property>
       </widget>
      </item>
      <item row="0" column="1">
       <widget class="QComboBox" name="connectType">
        <item>
         <property name="text">
          <string>Serial</string>
         </property>
        </item>
        <item>
         <property name="text">
          <string>TCP</string>
         </property>
        </item>
       </widget>
      </item>
      <item row="0" column="2">
       <widget class="QLabel" name="label_2">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="text">
         <string>Port:</string>
        </property>
       </widget>
      </item>
      <item row="0" column="0">
       <widget class="QLabel" name="label">
        <property name="text">
         <string>Connection type:</string>
        </property>
       </widget>
      </item>
      <item row="0" column="3">
       <widget class="QLineEdit" name="portEdit">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
       </widget>
      </item>
     </layout>
    </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout_2">
      <item>
       <widget class="QGroupBox" name="groupBox_2">
        <property name="minimumSize">
         <size>
          <width>250</width>
          <height>0</height>
         </size>
        </property>
        <property name="title">
         <string>Read</string>
        </property>
        <layout class="QGridLayout" name="gridLayout_3">
         <item row="0" column="0">
          <widget class="QLabel" name="label_4">
           <property name="text">
            <string>Start address:</string>
           </property>
          </widget>
         </item>
         <item row="0" column="1">
          <widget class="QSpinBox" name="readAddress">
           <property name="maximum">
            <number>9</number>
           </property>
          </widget>
         </item>
         <item row="1" column="0">
          <widget class="QLabel" name="label_5">
           <property name="text">
            <string>Number of values:</string>
           </property>
          </widget>
         </item>
         <item row="1" column="1">
          <widget class="QComboBox" name="readSize">
           <property name="currentIndex">
            <number>9</number>
           </property>
           <item>
            <property name="text">
             <string>1</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>2</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>3</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>4</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>5</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>6</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>7</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>8</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>9</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>10</string>
            </property>
           </item>
          </widget>
         </item>
         <item row="2" column="0">
          <widget class="QLabel" name="label_9">
           <property name="text">
            <string>Result:</string>
           </property>
          </widget>
         </item>
         <item row="3" column="0" colspan="2">
          <widget class="QListWidget" name="readValue">
           <property name="minimumSize">
            <size>
             <width>0</width>
             <height>0</height>
            </size>
           </property>
          </widget>
         </item>
        </layout>
       </widget>
      </item>
      <item>
       <widget class="QGroupBox" name="writeGroupBox">
        <property name="minimumSize">
         <size>
          <width>225</width>
          <height>0</height>
         </size>
        </property>
        <property name="title">
         <string>Write</string>
        </property>
        <layout class="QGridLayout" name="gridLayout_2">
         <item row="0" column="0">
          <widget class="QLabel" name="label_7">
           <property name="text">
            <string>Start address:</string>
           </property>
          </widget>
         </item>
         <item row="3" column="0" colspan="2">
          <widget class="QTreeView" name="writeValueTable">
           <property name="showDropIndicator" stdset="0">
            <bool>true</bool>
           </property>
           <property name="alternatingRowColors">
            <bool>true</bool>
           </property>
           <property name="rootIsDecorated">
            <bool>false</bool>
           </property>
           <property name="uniformRowHeights">
            <bool>true</bool>
           </property>
           <property name="itemsExpandable">
            <bool>false</bool>
           </property>
           <property name="expandsOnDoubleClick">
            <bool>false</bool>
           </property>
           <attribute name="headerVisible">
            <bool>true</bool>
           </attribute>
          </widget>
         </item>
         <item row="0" column="1">
          <widget class="QSpinBox" name="writeAddress">
           <property name="maximum">
            <number>9</number>
           </property>
          </widget>
         </item>
         <item row="1" column="0">
          <widget class="QLabel" name="label_8">
           <property name="text">
            <string>Number of values:</string>
           </property>
          </widget>
         </item>
         <item row="1" column="1">
          <widget class="QComboBox" name="writeSize">
           <property name="currentIndex">
            <number>9</number>
           </property>
           <item>
            <property name="text">
             <string>1</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>2</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>3</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>4</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>5</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>6</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>7</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>8</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>9</string>
            </property>
           </item>
           <item>
            <property name="text">
             <string>10</string>
            </property>
           </item>
          </widget>
         </item>
         <item row="2" column="0">
          <widget class="QLabel" name="label_3">
           <property name="text">
            <string/>
           </property>
          </widget>
         </item>
        </layout>
       </widget>
      </item>
     </layout>
    </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <item>
       <widget class="QLabel" name="label_6">
        <property name="text">
         <string>Table:</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QComboBox" name="writeTable"/>
      </item>
      <item>
       <spacer name="horizontalSpacer_2">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>13</width>
          <height>17</height>
         </size>
        </property>
       </spacer>
      </item>
      <item>
       <widget class="QPushButton" name="readButton">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="text">
         <string>Read</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="writeButton">
        <property name="text">
         <string>Write</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="readWriteButton">
        <property name="enabled">
         <bool>false</bool>
        </property>
        <property name="text">
         <string>Read-Write</string>
        </property>
       </widget>
      </item>
     </layout>
    </item>
   </layout>
  </widget>
  <widget class="QStatusBar" name="statusBar"/>
  <widget class="QMenuBar" name="menuBar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>516</width>
     <height>21</height>
    </rect>
   </property>
   <widget class="QMenu" name="menuDevice">
    <property name="title">
     <string>&Device</string>
    </property>
    <addaction name="actionConnect"/>
    <addaction name="actionDisconnect"/>
    <addaction name="separator"/>
    <addaction name="actionExit"/>
   </widget>
   <widget class="QMenu" name="menuToo_ls">
    <property name="title">
     <string>Too&ls</string>
    </property>
    <addaction name="actionOptions"/>
   </widget>
   <addaction name="menuDevice"/>
   <addaction name="menuToo_ls"/>
  </widget>
  <action name="actionConnect">
   <property name="icon">
    <iconset resource="master.qrc">
     <normaloff>:/images/connect.png</normaloff>:/images/connect.png</iconset>
   </property>
   <property name="text">
    <string>&Connect</string>
   </property>
  </action>
  <action name="actionDisconnect">
   <property name="icon">
    <iconset resource="master.qrc">
     <normaloff>:/images/disconnect.png</normaloff>:/images/disconnect.png</iconset>
   </property>
   <property name="text">
    <string>&Disconnect</string>
   </property>
  </action>
  <action name="actionExit">
   <property name="icon">
    <iconset resource="master.qrc">
     <normaloff>:/images/application-exit.png</normaloff>:/images/application-exit.png</iconset>
   </property>
   <property name="text">
    <string>&Quit</string>
   </property>
  </action>
  <action name="actionOptions">
   <property name="icon">
    <iconset resource="master.qrc">
     <normaloff>:/images/settings.png</normaloff>:/images/settings.png</iconset>
   </property>
   <property name="text">
    <string>&Options</string>
   </property>
  </action>
 </widget>
 <layoutdefault spacing="6" margin="11"/>
 <tabstops>
  <tabstop>connectType</tabstop>
  <tabstop>portEdit</tabstop>
  <tabstop>serverEdit</tabstop>
  <tabstop>connectButton</tabstop>
  <tabstop>readAddress</tabstop>
  <tabstop>readSize</tabstop>
  <tabstop>readValue</tabstop>
  <tabstop>writeAddress</tabstop>
  <tabstop>writeSize</tabstop>
  <tabstop>writeValueTable</tabstop>
  <tabstop>writeTable</tabstop>
  <tabstop>readButton</tabstop>
  <tabstop>writeButton</tabstop>
  <tabstop>readWriteButton</tabstop>
 </tabstops>
 <resources>
  <include location="master.qrc"/>
 </resources>
 <connections/>
</ui>