diff --git a/editor.pro.user b/editor.pro.user
index 916a4d0..3a14858 100644
--- a/editor.pro.user
+++ b/editor.pro.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.11.1, 2025-08-08T13:01:33. -->
+<!-- Written by QtCreator 4.11.1, 2025-08-09T09:34:13. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 290aaa1..8d38fa6 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -19,8 +19,10 @@ MainWindow::MainWindow(QWidget *parent)
     , ui(new Ui::MainWindow)
 {
     ui->setupUi(this);
-    plc_ = new PLC(ui->widget);
+    registerManager = new RegisterManager(this);
+    plc_ = new PLC(registerManager, ui->widget);
     hmi_ = new HMI(ui->widget);
+    modbusManager = new ModbusManager(registerManager, this);
     plc_->show();
     hmi_->hide();
     connect(ui->action_plc,&QAction::triggered,this,&MainWindow::plcChange);
@@ -29,6 +31,11 @@ MainWindow::MainWindow(QWidget *parent)
     connect(ui->action_new, &QAction::triggered, this, &MainWindow::newProject);
     connect(ui->action_save, &QAction::triggered, this, &MainWindow::saveProject);
     connect(ui->action_open, &QAction::triggered, this, &MainWindow::openProject);
+    connect(ui->action_connect, &QAction::triggered, this, &MainWindow::connection);
+    connect(ui->action_disconnect, &QAction::triggered, this, &MainWindow::disconnection);
+
+    connect(modbusManager, &ModbusManager::connectionStatusChanged,
+            plc_, &PLC::updateConnectionStatus);
 
 
     plc_->applyProjectToScene(plcProject_); // 初始空
@@ -133,3 +140,15 @@ void MainWindow::saveProject()
         }
     }
 }
+
+void MainWindow::connection()
+{
+    modbusManager->connectToDevice("COM1",QSerialPort::BaudRate(9600),QSerialPort::DataBits(8),QSerialPort::EvenParity,QSerialPort::StopBits(1));
+    modbusManager->startSimulation(2000);
+}
+
+void MainWindow::disconnection()
+{
+    modbusManager->disconnectDevice();
+    modbusManager->stopSimulation();
+}
diff --git a/mainwindow.h b/mainwindow.h
index e46b3b7..b54ff0a 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -26,11 +26,15 @@ private slots:
     void newProject();
     void openProject();
     void saveProject();
+    void connection();
+    void disconnection();
 
 private:
     Ui::MainWindow *ui;
+    RegisterManager* registerManager;
     PLC *plc_;
     HMI *hmi_;
+    ModbusManager* modbusManager;
     Project plcProject_;
     Project hmiProject_;
     QString plcFilePath_;
diff --git a/mainwindow.ui b/mainwindow.ui
index 73fda7d..300e9d9 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -49,8 +49,16 @@
     <addaction name="action_plc"/>
     <addaction name="action_hmi"/>
    </widget>
+   <widget class="QMenu" name="menu_3">
+    <property name="title">
+     <string>仿真</string>
+    </property>
+    <addaction name="action_connect"/>
+    <addaction name="action_disconnect"/>
+   </widget>
    <addaction name="menu"/>
    <addaction name="menu_2"/>
+   <addaction name="menu_3"/>
   </widget>
   <widget class="QStatusBar" name="statusbar"/>
   <action name="action_new">
@@ -78,6 +86,16 @@
     <string>HMI</string>
    </property>
   </action>
+  <action name="action_connect">
+   <property name="text">
+    <string>connect</string>
+   </property>
+  </action>
+  <action name="action_disconnect">
+   <property name="text">
+    <string>disconnect</string>
+   </property>
+  </action>
  </widget>
  <resources/>
  <connections/>
diff --git a/plc.cpp b/plc.cpp
index b8e05ed..68c37cf 100644
--- a/plc.cpp
+++ b/plc.cpp
@@ -12,13 +12,13 @@
 #include <QMessageBox>
 #include "creatitem.h"
 
-PLC::PLC(QWidget *parent) :
+PLC::PLC(RegisterManager *regManager, QWidget *parent) :
     QWidget(parent),
-    ui(new Ui::PLC)
+    ui(new Ui::PLC),
+    registerManager(regManager)
 {
     ui->setupUi(this);
-    registerManager = new RegisterManager(this);
-    modbusManager = new ModbusManager(registerManager, this);
+//    modbusManager = new ModbusManager(registerManager, this);
     /* 1. 场景 */
     plc_scene_ = new QGraphicsScene(this);
     ui->graphicsView->setScene(plc_scene_);
@@ -35,8 +35,8 @@ PLC::PLC(QWidget *parent) :
     createComponents();
     connect(ui->listWidget,&QListWidget::currentTextChanged,this,&PLC::onListwidgetCurrenttextchanged);
     connect(ui->btn_insert,&QPushButton::clicked,this,&PLC::btnInsertClicked);
-    connect(modbusManager, &ModbusManager::connectionStatusChanged,
-            this, &PLC::updateConnectionStatus);
+//    connect(modbusManager, &ModbusManager::connectionStatusChanged,
+//            this, &PLC::updateConnectionStatus);
 //    connect(modbusManager, &ModbusManager::errorOccurred,
 //            this, &PLC::handleModbusError);
     connect(ui->graphicsView, &MyGraphicsView::itemBoundToRegister,
@@ -235,26 +235,14 @@ void PLC::btnInsertClicked()
        ui->graphicsView->scene()->addItem(c2);
 }
 
-void PLC::on_pushButton_clicked()
-{
-    modbusManager->connectToDevice("COM1",QSerialPort::BaudRate(9600),QSerialPort::DataBits(8),QSerialPort::EvenParity,QSerialPort::StopBits(1));
-}
-
-void PLC::on_pushButton_2_clicked()
-{
-    modbusManager->disconnectDevice();
-}
-
 void PLC::updateConnectionStatus(bool connection)
 {
     if (connection)
     {
         ui->textEdit->append("连接");
-        modbusManager->startSimulation(2000);
     }
     else
     {
         ui->textEdit->append("断开");
-        modbusManager->stopSimulation();
     }
 }
diff --git a/plc.h b/plc.h
index 99c7f7e..04e4fc7 100644
--- a/plc.h
+++ b/plc.h
@@ -15,7 +15,7 @@ class PLC : public QWidget
     Q_OBJECT
 
 public:
-    explicit PLC(QWidget *parent = nullptr);
+    explicit PLC(RegisterManager* regManager, QWidget *parent = nullptr);
     ~PLC();
     void createComponents();
 
@@ -26,20 +26,15 @@ public:
 protected:
     bool eventFilter(QObject *obj, QEvent *event) override;
 
-private slots:
+public slots:
     void onListwidgetCurrenttextchanged(const QString &currentText);
     void btnInsertClicked();
 
-    void on_pushButton_clicked();
-
-    void on_pushButton_2_clicked();
-
     void updateConnectionStatus(bool connection);
 
 private:
     Ui::PLC *ui;
     QGraphicsScene *plc_scene_;
-    ModbusManager* modbusManager;
     RegisterManager* registerManager;
     QString selectedComponentType;
 };
diff --git a/plc.ui b/plc.ui
index c595c9f..b7189f9 100644
--- a/plc.ui
+++ b/plc.ui
@@ -59,32 +59,6 @@
     </rect>
    </property>
   </widget>
-  <widget class="QPushButton" name="pushButton">
-   <property name="geometry">
-    <rect>
-     <x>120</x>
-     <y>0</y>
-     <width>93</width>
-     <height>28</height>
-    </rect>
-   </property>
-   <property name="text">
-    <string>连接</string>
-   </property>
-  </widget>
-  <widget class="QPushButton" name="pushButton_2">
-   <property name="geometry">
-    <rect>
-     <x>230</x>
-     <y>0</y>
-     <width>93</width>
-     <height>28</height>
-    </rect>
-   </property>
-   <property name="text">
-    <string>断开</string>
-   </property>
-  </widget>
  </widget>
  <customwidgets>
   <customwidget>