diff --git a/app/integrated_platform.pro b/app/integrated_platform.pro
index 275de21..000728d 100644
--- a/app/integrated_platform.pro
+++ b/app/integrated_platform.pro
@@ -18,6 +18,7 @@ SOURCES += \
     src/main.cpp \
     src/ui/main_window.cpp \
     src/ui/alarm_configuration_dialog.cpp \
+    src/ui/register_comment_dialog.cpp \
     src/ui/plc_connection_dialog.cpp \
     src/ui/free_monitor_widget.cpp \
     src/ui/runtime_monitor_widget.cpp \
@@ -41,6 +42,7 @@ SOURCES += \
     src/services/offline_simulation_service.cpp \
     src/services/runtime_mode_service.cpp \
     src/services/register_monitor_service.cpp \
+    src/services/register_comment_service.cpp \
     src/infrastructure/plc_register_repository.cpp \
     src/infrastructure/plc_communication_error_classifier.cpp \
     src/infrastructure/plc_communication_service.cpp \
@@ -51,6 +53,7 @@ SOURCES += \
 HEADERS += \
     src/ui/main_window.h \
     src/ui/alarm_configuration_dialog.h \
+    src/ui/register_comment_dialog.h \
     src/ui/plc_connection_dialog.h \
     src/ui/free_monitor_widget.h \
     src/ui/runtime_monitor_widget.h \
@@ -75,6 +78,7 @@ HEADERS += \
     src/services/offline_simulation_service.h \
     src/services/runtime_mode_service.h \
     src/services/register_monitor_service.h \
+    src/services/register_comment_service.h \
     src/services/plc_communication_gateway.h \
     src/infrastructure/plc_register_repository.h \
     src/infrastructure/plc_communication_error_classifier.h \
@@ -86,6 +90,7 @@ HEADERS += \
 FORMS += \
     src/ui/main_window.ui \
     src/ui/alarm_configuration_dialog.ui \
+    src/ui/register_comment_dialog.ui \
     src/ui/plc_connection_dialog.ui \
     src/ui/free_monitor_widget.ui \
     src/ui/runtime_monitor_widget.ui
diff --git a/app/src/main.cpp b/app/src/main.cpp
index 33c4b57..7d5c12e 100644
--- a/app/src/main.cpp
+++ b/app/src/main.cpp
@@ -22,6 +22,7 @@
 #include "services/project_service.h"
 #include "services/runtime_mode_service.h"
 #include "services/register_monitor_service.h"
+#include "services/register_comment_service.h"
 #include "ui/main_window.h"
 
 int main(int argc, char *argv[])
@@ -44,6 +45,7 @@ int main(int argc, char *argv[])
     HmiRuntimeService hmi_runtime_service(active_register_repository);
     AlarmEditorService alarm_editor_service(project_service);
     AlarmService alarm_service(project_service, active_register_repository);
+    RegisterCommentService register_comment_service(project_service);
     RegisterMonitorService register_monitor_service(active_register_repository);
     OfflineSimulationService offline_simulation_service(virtual_register_repository);
     RuntimeModeService runtime_mode_service(
@@ -62,6 +64,7 @@ int main(int argc, char *argv[])
         alarm_editor_service,
         alarm_service,
         hmi_navigation_service,
+        register_comment_service,
         register_monitor_service);
     main_window.show();
 
diff --git a/app/src/ui/logic_editor_widget.cpp b/app/src/ui/logic_editor_widget.cpp
index fa5b56b..dec1a2e 100644
--- a/app/src/ui/logic_editor_widget.cpp
+++ b/app/src/ui/logic_editor_widget.cpp
@@ -17,9 +17,9 @@ constexpr qreal kSceneMargin = 28.0;
 constexpr qreal kRailInset = 40.0;
 constexpr qreal kMinimumSceneWidth = 980.0;
 constexpr qreal kCellWidth = 128.0;
-constexpr qreal kCellHeight = 86.0;
+constexpr qreal kCellHeight = 120.0;
 constexpr qreal kNodeTerminalX = 50.0;
-constexpr qreal kRungHeaderHeight = 34.0;
+constexpr qreal kRungHeaderHeight = 52.0;
 constexpr qreal kRungGap = 18.0;
 constexpr qreal kLadderLineWidth = 1.8;
 constexpr int kMinimumLogicColumns = 7;
@@ -48,6 +48,29 @@ QString registerAddressText(const RegisterAddress &address)
     return QString::fromStdString(address.toString());
 }
 
+QString timerAddressText(const TimerAddress &address)
+{
+    return QString::fromStdString(address.toString());
+}
+
+void drawRegisterComment(
+    QPainter *painter, const QString &comment, qreal top = 22.0)
+{
+    if (comment.isEmpty())
+    {
+        return;
+    }
+    QFont font = painter->font();
+    font.setPointSizeF(8.0);
+    painter->setFont(font);
+    const QString visible_comment = painter->fontMetrics().elidedText(
+        comment, Qt::ElideRight, static_cast<int>(kCellWidth - 8.0));
+    painter->drawText(
+        QRectF(-kCellWidth / 2.0, top, kCellWidth, 18),
+        Qt::AlignCenter,
+        visible_comment);
+}
+
 QString comparisonText(ComparisonOperator comparison)
 {
     switch (comparison)
@@ -76,18 +99,37 @@ QString nodeToolTip(const LogicNodeConfig &config)
                              : LogicEditorWidget::tr("常闭"))
                     .arg(registerAddressText(value.address));
             }
+            else if constexpr (std::is_same_v<Config, EdgeContactNodeConfig>)
+            {
+                return LogicEditorWidget::tr("%1沿触点：%2")
+                    .arg(value.mode == EdgeMode::Rising
+                             ? LogicEditorWidget::tr("上升")
+                             : LogicEditorWidget::tr("下降"))
+                    .arg(registerAddressText(value.address));
+            }
+            else if constexpr (std::is_same_v<Config, TimerContactNodeConfig>)
+            {
+                return LogicEditorWidget::tr("T 触点：%1")
+                    .arg(timerAddressText(value.address));
+            }
             else if constexpr (std::is_same_v<Config, CoilNodeConfig>)
             {
                 return LogicEditorWidget::tr("输出线圈：%1")
                     .arg(registerAddressText(value.address));
             }
-            else
+            else if constexpr (std::is_same_v<Config, CompareNodeConfig>)
             {
                 return LogicEditorWidget::tr("比较条件：%1 %2 %3")
                     .arg(registerAddressText(value.address))
                     .arg(comparisonText(value.comparison))
                     .arg(value.value);
             }
+            else
+            {
+                return LogicEditorWidget::tr("TON：%1，预设 %2 ms")
+                    .arg(timerAddressText(value.address))
+                    .arg(value.presetMs);
+            }
         },
         config);
 }
@@ -187,11 +229,13 @@ public:
         const LogicNode &node,
         const std::string &rung_id,
         const QPointF &center,
+        const QString &register_comment,
         bool active,
         bool faulted)
         : node_id_(node.id),
           rung_id_(rung_id),
           config_(node.config),
+          register_comment_(register_comment),
           configured_(node.configured),
           active_(active),
           faulted_(faulted)
@@ -199,8 +243,14 @@ public:
         setPos(center);
         setFlag(ItemIsSelectable, true);
         setZValue(3.0);
-        setToolTip(configured_ ? nodeToolTip(config_)
-                               : LogicEditorWidget::tr("待配置：请在属性区设置地址和参数"));
+        QString tool_tip = configured_
+            ? nodeToolTip(config_)
+            : LogicEditorWidget::tr("待配置：请在属性区设置地址和参数");
+        if (!register_comment_.isEmpty())
+        {
+            tool_tip += LogicEditorWidget::tr("\n注释：%1").arg(register_comment_);
+        }
+        setToolTip(tool_tip);
     }
 
     QRectF boundingRect() const override
@@ -241,6 +291,41 @@ public:
                 QRectF(-kCellWidth / 2.0, -40, kCellWidth, 18),
                 Qt::AlignCenter,
                 configured_ ? registerAddressText(contact->address) : tr("< M 地址 >"));
+            drawRegisterComment(painter, register_comment_);
+        }
+        else if (const auto *edge = std::get_if<EdgeContactNodeConfig>(&config_))
+        {
+            painter->fillRect(QRectF(-25, -22, 50, 44), Qt::white);
+            painter->drawLine(QPointF(-kNodeTerminalX, 0), QPointF(-18, 0));
+            painter->drawLine(QPointF(18, 0), QPointF(kNodeTerminalX, 0));
+            painter->drawLine(QPointF(-18, -15), QPointF(-18, 15));
+            painter->drawLine(QPointF(18, -15), QPointF(18, 15));
+            painter->drawText(
+                QRectF(-14, -12, 28, 24),
+                Qt::AlignCenter,
+                edge->mode == EdgeMode::Rising ? QStringLiteral("P") : QStringLiteral("N"));
+            painter->drawText(
+                QRectF(-kCellWidth / 2.0, -40, kCellWidth, 18),
+                Qt::AlignCenter,
+                configured_ ? registerAddressText(edge->address) : tr("< M 地址 >"));
+            drawRegisterComment(painter, register_comment_);
+        }
+        else if (const auto *timer_contact =
+                     std::get_if<TimerContactNodeConfig>(&config_))
+        {
+            painter->fillRect(QRectF(-25, -22, 50, 44), Qt::white);
+            painter->drawLine(QPointF(-kNodeTerminalX, 0), QPointF(-18, 0));
+            painter->drawLine(QPointF(18, 0), QPointF(kNodeTerminalX, 0));
+            painter->drawLine(QPointF(-18, -15), QPointF(-18, 15));
+            painter->drawLine(QPointF(18, -15), QPointF(18, 15));
+            if (timer_contact->mode == ContactMode::NormallyClosed)
+            {
+                painter->drawLine(QPointF(-23, 18), QPointF(23, -18));
+            }
+            painter->drawText(
+                QRectF(-kCellWidth / 2.0, -40, kCellWidth, 18),
+                Qt::AlignCenter,
+                configured_ ? timerAddressText(timer_contact->address) : tr("< T 地址 >"));
         }
         else if (const auto *coil = std::get_if<CoilNodeConfig>(&config_))
         {
@@ -266,6 +351,7 @@ public:
                 QRectF(-kCellWidth / 2.0, -40, kCellWidth, 18),
                 Qt::AlignCenter,
                 configured_ ? registerAddressText(coil->address) : tr("< M 地址 >"));
+            drawRegisterComment(painter, register_comment_);
         }
         else if (const auto *comparison = std::get_if<CompareNodeConfig>(&config_))
         {
@@ -285,6 +371,25 @@ public:
                 QRectF(-kCellWidth / 2.0, 22, kCellWidth, 18),
                 Qt::AlignCenter,
                 configured_ ? QString::number(comparison->value) : tr("< 常量 >"));
+            drawRegisterComment(painter, register_comment_, 40.0);
+        }
+        else if (const auto *ton = std::get_if<TonNodeConfig>(&config_))
+        {
+            const QRectF box(-47, -18, 94, 36);
+            painter->fillRect(box.adjusted(-1, -1, 1, 1), Qt::white);
+            painter->drawLine(QPointF(-kNodeTerminalX, 0), QPointF(-47, 0));
+            painter->drawLine(QPointF(47, 0), QPointF(kNodeTerminalX, 0));
+            painter->drawRect(box);
+            painter->drawText(box, Qt::AlignCenter, QStringLiteral("TON"));
+            painter->drawText(
+                QRectF(-kCellWidth / 2.0, -40, kCellWidth, 18),
+                Qt::AlignCenter,
+                configured_ ? timerAddressText(ton->address) : tr("< T 地址 >"));
+            painter->drawText(
+                QRectF(-kCellWidth / 2.0, 22, kCellWidth, 18),
+                Qt::AlignCenter,
+                configured_ ? QStringLiteral("PT %1 ms").arg(ton->presetMs)
+                            : tr("< 预设时间 >"));
         }
     }
 
@@ -295,6 +400,7 @@ private:
     std::string node_id_;
     std::string rung_id_;
     LogicNodeConfig config_;
+    QString register_comment_;
     bool configured_ = true;
     bool active_ = false;
     bool faulted_ = false;
@@ -312,6 +418,7 @@ public:
         qreal cursor_left)
         : rung_id_(rung.id),
           name_(QString::fromStdString(rung.name)),
+          comment_(QString::fromStdString(rung.comment)),
           number_(number),
           height_(height),
           width_(width),
@@ -321,6 +428,10 @@ public:
         setPos(0, top);
         setFlag(ItemIsSelectable, true);
         setZValue(-2.0);
+        if (!comment_.isEmpty())
+        {
+            setToolTip(comment_);
+        }
     }
 
     QRectF boundingRect() const override { return {kSceneMargin, 0, width_, height_}; }
@@ -351,6 +462,16 @@ public:
             QRectF(kSceneMargin + 8, 5, 320, 22),
             Qt::AlignLeft | Qt::AlignVCenter,
             title);
+        if (!comment_.isEmpty())
+        {
+            painter->setPen(QColor(QStringLiteral("#7b8790")));
+            const QString visible_comment = painter->fontMetrics().elidedText(
+                comment_, Qt::ElideRight, static_cast<int>(width_ - 16.0));
+            painter->drawText(
+                QRectF(kSceneMargin + 8, 24, width_ - 16, 22),
+                Qt::AlignLeft | Qt::AlignVCenter,
+                visible_comment);
+        }
         painter->setPen(QPen(QColor(QStringLiteral("#d4dce1")), 1));
         painter->drawLine(
             QPointF(kSceneMargin + 8, height_ - 1),
@@ -362,6 +483,7 @@ public:
 private:
     std::string rung_id_;
     QString name_;
+    QString comment_;
     int number_ = 0;
     qreal height_ = 0.0;
     qreal width_ = 0.0;
@@ -373,6 +495,7 @@ namespace {
 
 RenderResult renderExpression(
     QGraphicsScene &scene,
+    const LogicEditorService &editor_service,
     const ConditionExpression &expression,
     const std::string &rung_id,
     const QPointF &top_left,
@@ -399,6 +522,15 @@ RenderResult renderExpression(
             *expression.node,
             rung_id,
             center,
+            [&editor_service, &expression]
+            {
+                const std::optional<RegisterAddress> address =
+                    registerAddressForLogicNode(expression.node->config);
+                return address.has_value()
+                    ? QString::fromStdString(
+                          editor_service.registerCommentFor(*address))
+                    : QString{};
+            }(),
             node_active,
             expression.node->id == fault_node_id));
         return {
@@ -416,6 +548,7 @@ RenderResult renderExpression(
             const ExpressionMetrics child_metrics = measureExpression(expression.children[index]);
             const RenderResult current = renderExpression(
                 scene,
+                editor_service,
                 expression.children[index],
                 rung_id,
                 QPointF(x, top_left.y()),
@@ -445,6 +578,7 @@ RenderResult renderExpression(
         const ExpressionMetrics child_metrics = measureExpression(child);
         branches.push_back(renderExpression(
             scene,
+            editor_service,
             child,
             rung_id,
             QPointF(top_left.x(), y),
@@ -588,6 +722,7 @@ void LogicEditorWidget::reloadLogic()
         {
             const RenderResult rendered = renderExpression(
                 *scene_,
+                editor_service_,
                 *rung.condition,
                 rung.id,
                 QPointF(left_rail_x, grid_top),
@@ -620,7 +755,24 @@ void LogicEditorWidget::reloadLogic()
                 *rung.output,
                 rung.id,
                 QPointF(output_left + kCellWidth / 2.0, main_y),
-                rung_active,
+                [&rung, this]
+                {
+                    const std::optional<RegisterAddress> address =
+                        registerAddressForLogicNode(rung.output->config);
+                    return address.has_value()
+                        ? QString::fromStdString(
+                              editor_service_.registerCommentFor(*address))
+                        : QString{};
+                }(),
+                [&rung, this, rung_active]
+                {
+                    return std::holds_alternative<TonNodeConfig>(rung.output->config)
+                        ? traceValue(
+                              trace_,
+                              &LogicTraceSnapshot::nodeValues,
+                              rung.output->id)
+                        : rung_active;
+                }(),
                 rung.output->id == fault_node_id_));
         }
         else
diff --git a/app/src/ui/main_window.cpp b/app/src/ui/main_window.cpp
index 05c7621..9a2c95c 100644
--- a/app/src/ui/main_window.cpp
+++ b/app/src/ui/main_window.cpp
@@ -2,6 +2,7 @@
 
 #include "hmi_editor_widget.h"
 #include "alarm_configuration_dialog.h"
+#include "register_comment_dialog.h"
 #include "logic_editor_widget.h"
 #include "plc_connection_dialog.h"
 #include "runtime_monitor_widget.h"
@@ -15,6 +16,7 @@
 #include "services/project_service.h"
 #include "services/runtime_mode_service.h"
 #include "services/register_monitor_service.h"
+#include "services/register_comment_service.h"
 #include "ui_main_window.h"
 
 #include <QActionGroup>
@@ -200,6 +202,7 @@ MainWindow::MainWindow(
     HmiRuntimeService &hmi_runtime_service,
     AlarmEditorService &alarm_editor_service,
     AlarmService &alarm_service,
+    RegisterCommentService &register_comment_service,
     RegisterMonitorService &register_monitor_service,
     QWidget *parent)
     : QMainWindow(parent),
@@ -211,6 +214,7 @@ MainWindow::MainWindow(
       hmi_runtime_service_(hmi_runtime_service),
       alarm_editor_service_(alarm_editor_service),
       alarm_service_(alarm_service),
+      register_comment_service_(register_comment_service),
       register_monitor_service_(register_monitor_service),
       owned_hmi_navigation_service_(
           std::make_unique<HmiNavigationService>(project_service)),
@@ -228,6 +232,7 @@ MainWindow::MainWindow(
     AlarmEditorService &alarm_editor_service,
     AlarmService &alarm_service,
     HmiNavigationService &hmi_navigation_service,
+    RegisterCommentService &register_comment_service,
     RegisterMonitorService &register_monitor_service,
     QWidget *parent)
     : QMainWindow(parent),
@@ -239,6 +244,7 @@ MainWindow::MainWindow(
       hmi_runtime_service_(hmi_runtime_service),
       alarm_editor_service_(alarm_editor_service),
       alarm_service_(alarm_service),
+      register_comment_service_(register_comment_service),
       register_monitor_service_(register_monitor_service),
       hmi_navigation_service_(&hmi_navigation_service)
 {
@@ -253,6 +259,7 @@ void MainWindow::initializeUi()
     configurePropertyEditor();
     configurePlcConnection();
     configureAlarms();
+    configureRegisterComments();
     configureHmiEditor();
     configureLogicEditor();
     configureRuntimeMonitor();
@@ -332,6 +339,9 @@ void MainWindow::configureActions()
     QMenu *parallel_menu = new QMenu(this);
     QAction *parallel_open = parallel_menu->addAction(tr("并联常开触点"));
     QAction *parallel_closed = parallel_menu->addAction(tr("并联常闭触点"));
+    QAction *parallel_rising = parallel_menu->addAction(tr("并联上升沿触点"));
+    QAction *parallel_falling = parallel_menu->addAction(tr("并联下降沿触点"));
+    QAction *parallel_timer = parallel_menu->addAction(tr("并联 T 触点"));
     QAction *parallel_compare = parallel_menu->addAction(tr("并联比较条件"));
     connect(parallel_open, &QAction::triggered,
             this,
@@ -349,6 +359,27 @@ void MainWindow::configureActions()
                     RegisterAddress{RegisterArea::M, 0},
                     ContactMode::NormallyClosed});
             });
+    connect(parallel_rising, &QAction::triggered,
+            this,
+            [this]
+            {
+                addLogicParallelBranch(EdgeContactNodeConfig{
+                    RegisterAddress{RegisterArea::M, 0}, EdgeMode::Rising});
+            });
+    connect(parallel_falling, &QAction::triggered,
+            this,
+            [this]
+            {
+                addLogicParallelBranch(EdgeContactNodeConfig{
+                    RegisterAddress{RegisterArea::M, 0}, EdgeMode::Falling});
+            });
+    connect(parallel_timer, &QAction::triggered,
+            this,
+            [this]
+            {
+                addLogicParallelBranch(TimerContactNodeConfig{
+                    TimerAddress{0}, ContactMode::NormallyOpen});
+            });
     connect(parallel_compare, &QAction::triggered,
             this,
             [this]
@@ -380,6 +411,27 @@ void MainWindow::configureActions()
                     RegisterAddress{RegisterArea::M, 0},
                     ContactMode::NormallyClosed});
             });
+    connect(ui_->addRisingEdgeAction, &QAction::triggered,
+            this,
+            [this]
+            {
+                addLogicCondition(EdgeContactNodeConfig{
+                    RegisterAddress{RegisterArea::M, 0}, EdgeMode::Rising});
+            });
+    connect(ui_->addFallingEdgeAction, &QAction::triggered,
+            this,
+            [this]
+            {
+                addLogicCondition(EdgeContactNodeConfig{
+                    RegisterAddress{RegisterArea::M, 0}, EdgeMode::Falling});
+            });
+    connect(ui_->addTimerContactAction, &QAction::triggered,
+            this,
+            [this]
+            {
+                addLogicCondition(TimerContactNodeConfig{
+                    TimerAddress{0}, ContactMode::NormallyOpen});
+            });
     connect(ui_->addNormalCoilAction, &QAction::triggered,
             this,
             [this]
@@ -404,6 +456,12 @@ void MainWindow::configureActions()
                     RegisterAddress{RegisterArea::M, 0},
                     CoilMode::Reset});
             });
+    connect(ui_->addTonAction, &QAction::triggered,
+            this,
+            [this]
+            {
+                setLogicOutput(TonNodeConfig{TimerAddress{0}, 1000});
+            });
     connect(ui_->addCompareAction, &QAction::triggered,
             this,
             [this]
@@ -415,6 +473,8 @@ void MainWindow::configureActions()
             });
     connect(ui_->deleteLogicAction, &QAction::triggered,
             this, &MainWindow::deleteSelectedLogicObject);
+    connect(ui_->editRungCommentAction, &QAction::triggered,
+            this, &MainWindow::editSelectedRungComment);
 
     connect(ui_->editorTabWidget, &QTabWidget::currentChanged,
             this,
@@ -481,10 +541,15 @@ void MainWindow::configureAppearance()
     ui_->parallelInsertAction->setIcon(style()->standardIcon(QStyle::SP_ArrowDown));
     ui_->addNormallyOpenAction->setIcon(style()->standardIcon(QStyle::SP_ArrowRight));
     ui_->addNormallyClosedAction->setIcon(style()->standardIcon(QStyle::SP_ArrowRight));
+    ui_->addRisingEdgeAction->setIcon(style()->standardIcon(QStyle::SP_ArrowRight));
+    ui_->addFallingEdgeAction->setIcon(style()->standardIcon(QStyle::SP_ArrowRight));
+    ui_->addTimerContactAction->setIcon(style()->standardIcon(QStyle::SP_ArrowRight));
     ui_->addNormalCoilAction->setIcon(style()->standardIcon(QStyle::SP_DialogApplyButton));
     ui_->addSetCoilAction->setIcon(style()->standardIcon(QStyle::SP_DialogYesButton));
     ui_->addResetCoilAction->setIcon(style()->standardIcon(QStyle::SP_DialogNoButton));
+    ui_->addTonAction->setIcon(style()->standardIcon(QStyle::SP_BrowserReload));
     ui_->addCompareAction->setIcon(style()->standardIcon(QStyle::SP_FileDialogInfoView));
+    ui_->editRungCommentAction->setIcon(style()->standardIcon(QStyle::SP_FileDialogDetailedView));
     ui_->deleteLogicAction->setIcon(style()->standardIcon(QStyle::SP_TrashIcon));
     ui_->editorTabWidget->setTabIcon(0, style()->standardIcon(QStyle::SP_DesktopIcon));
     ui_->editorTabWidget->setTabIcon(1, style()->standardIcon(QStyle::SP_FileDialogListView));
@@ -755,7 +820,22 @@ void MainWindow::configureAlarms()
                 AlarmConfigurationDialog dialog(alarm_editor_service_, this);
                 dialog.exec();
                 refreshProjectUi();
-            });
+    });
+}
+
+void MainWindow::configureRegisterComments()
+{
+    connect(
+        ui_->configureRegisterCommentsAction,
+        &QAction::triggered,
+        this,
+        [this]
+        {
+            RegisterCommentDialog dialog(register_comment_service_, this);
+            dialog.exec();
+            logic_editor_widget_->reloadLogic();
+            refreshProjectUi();
+        });
 }
 
 void MainWindow::refreshProjectUi()
@@ -1300,6 +1380,7 @@ void MainWindow::showLogicNodeProperties(const std::string &node_id)
                             static_cast<QWidget *>(ui_->logicModeComboBox),
                             static_cast<QWidget *>(ui_->logicComparisonComboBox),
                             static_cast<QWidget *>(ui_->logicValueSpinBox),
+                            static_cast<QWidget *>(ui_->logicPresetSpinBox),
                             static_cast<QWidget *>(ui_->applyLogicPropertiesButton)})
     {
         widget->setEnabled(has_node);
@@ -1312,11 +1393,15 @@ void MainWindow::showLogicNodeProperties(const std::string &node_id)
         ui_->logicNodeTypeLabel->clear();
         ui_->logicAddressAreaLabel->clear();
         ui_->logicModeComboBox->clear();
+        ui_->logicPresetSpinBox->setValue(TonNodeConfig::kMinimumPresetMs);
         return;
     }
 
     ui_->logicNodeIdEdit->setText(fromUtf8(node->id));
     ui_->logicModeComboBox->clear();
+    ui_->logicComparisonComboBox->setEnabled(false);
+    ui_->logicValueSpinBox->setEnabled(false);
+    ui_->logicPresetSpinBox->setEnabled(false);
     if (const auto *contact = std::get_if<ContactNodeConfig>(&node->config))
     {
         ui_->logicNodeTypeLabel->setText(tr("触点"));
@@ -1327,10 +1412,36 @@ void MainWindow::showLogicNodeProperties(const std::string &node_id)
         ui_->logicModeComboBox->addItem(
             tr("常闭"), static_cast<int>(ContactMode::NormallyClosed));
         ui_->logicModeComboBox->setCurrentIndex(
-            ui_->logicModeComboBox->findData(static_cast<int>(contact->mode)));
+        ui_->logicModeComboBox->findData(static_cast<int>(contact->mode)));
+        ui_->logicModeComboBox->setEnabled(true);
+    }
+    else if (const auto *edge = std::get_if<EdgeContactNodeConfig>(&node->config))
+    {
+        ui_->logicNodeTypeLabel->setText(tr("边沿触点"));
+        ui_->logicAddressAreaLabel->setText(QStringLiteral("M"));
+        ui_->logicAddressSpinBox->setValue(edge->address.index());
+        ui_->logicModeComboBox->addItem(
+            tr("上升沿"), static_cast<int>(EdgeMode::Rising));
+        ui_->logicModeComboBox->addItem(
+            tr("下降沿"), static_cast<int>(EdgeMode::Falling));
+        ui_->logicModeComboBox->setCurrentIndex(
+            ui_->logicModeComboBox->findData(static_cast<int>(edge->mode)));
+        ui_->logicModeComboBox->setEnabled(true);
+    }
+    else if (const auto *timer_contact =
+                 std::get_if<TimerContactNodeConfig>(&node->config))
+    {
+        ui_->logicNodeTypeLabel->setText(tr("T 触点"));
+        ui_->logicAddressAreaLabel->setText(QStringLiteral("T"));
+        ui_->logicAddressSpinBox->setValue(timer_contact->address.index());
+        ui_->logicModeComboBox->addItem(
+            tr("常开"), static_cast<int>(ContactMode::NormallyOpen));
+        ui_->logicModeComboBox->addItem(
+            tr("常闭"), static_cast<int>(ContactMode::NormallyClosed));
+        ui_->logicModeComboBox->setCurrentIndex(
+            ui_->logicModeComboBox->findData(
+                static_cast<int>(timer_contact->mode)));
         ui_->logicModeComboBox->setEnabled(true);
-        ui_->logicComparisonComboBox->setEnabled(false);
-        ui_->logicValueSpinBox->setEnabled(false);
     }
     else if (const auto *coil = std::get_if<CoilNodeConfig>(&node->config))
     {
@@ -1344,25 +1455,33 @@ void MainWindow::showLogicNodeProperties(const std::string &node_id)
         ui_->logicModeComboBox->addItem(
             tr("复位"), static_cast<int>(CoilMode::Reset));
         ui_->logicModeComboBox->setCurrentIndex(
-            ui_->logicModeComboBox->findData(static_cast<int>(coil->mode)));
+        ui_->logicModeComboBox->findData(static_cast<int>(coil->mode)));
         ui_->logicModeComboBox->setEnabled(true);
-        ui_->logicComparisonComboBox->setEnabled(false);
-        ui_->logicValueSpinBox->setEnabled(false);
     }
-    else
+    else if (const auto *compare = std::get_if<CompareNodeConfig>(&node->config))
     {
-        const auto &compare = std::get<CompareNodeConfig>(node->config);
         ui_->logicNodeTypeLabel->setText(tr("D 值比较"));
         ui_->logicAddressAreaLabel->setText(QStringLiteral("D"));
-        ui_->logicAddressSpinBox->setValue(compare.address.index());
+        ui_->logicAddressSpinBox->setValue(compare->address.index());
         ui_->logicModeComboBox->addItem(tr("不适用"));
         ui_->logicModeComboBox->setEnabled(false);
         ui_->logicComparisonComboBox->setEnabled(true);
         ui_->logicComparisonComboBox->setCurrentIndex(
             ui_->logicComparisonComboBox->findData(
-                static_cast<int>(compare.comparison)));
+                static_cast<int>(compare->comparison)));
         ui_->logicValueSpinBox->setEnabled(true);
-        ui_->logicValueSpinBox->setValue(compare.value);
+        ui_->logicValueSpinBox->setValue(compare->value);
+    }
+    else
+    {
+        const auto &ton = std::get<TonNodeConfig>(node->config);
+        ui_->logicNodeTypeLabel->setText(tr("TON"));
+        ui_->logicAddressAreaLabel->setText(QStringLiteral("T"));
+        ui_->logicAddressSpinBox->setValue(ton.address.index());
+        ui_->logicModeComboBox->addItem(tr("非保持接通延时"));
+        ui_->logicModeComboBox->setEnabled(false);
+        ui_->logicPresetSpinBox->setEnabled(true);
+        ui_->logicPresetSpinBox->setValue(ton.presetMs);
     }
     if (!node->configured)
     {
@@ -1500,13 +1619,13 @@ void MainWindow::setLogicOutput(const LogicNodeConfig &config)
     const LogicEditorResult result = logic_editor_widget_->setOutput(config);
     if (!result.succeeded)
     {
-        showProjectResult(tr("设置输出线圈"), fromUtf8(result.message), false);
+        showProjectResult(tr("设置逻辑输出"), fromUtf8(result.message), false);
         return;
     }
     selected_logic_node_id_ = result.id;
     showLogicNodeProperties(result.id);
     refreshProjectUi();
-    statusBar()->showMessage(tr("输出线圈已设置"), 3000);
+    statusBar()->showMessage(tr("逻辑输出已设置"), 3000);
 }
 
 void MainWindow::addLogicRung()
@@ -1523,6 +1642,43 @@ void MainWindow::addLogicRung()
     statusBar()->showMessage(tr("已新建网络"), 3000);
 }
 
+void MainWindow::editSelectedRungComment()
+{
+    const std::string rung_id = logic_editor_widget_->selectedRungId();
+    if (rung_id.empty())
+    {
+        showProjectResult(tr("网络注释"), tr("请先选择一个梯形图网络"), false);
+        return;
+    }
+    const LadderRung *rung = logic_editor_service_.findRung(
+        current_logic_id_, rung_id);
+    if (rung == nullptr)
+    {
+        return;
+    }
+    bool accepted = false;
+    const QString comment = QInputDialog::getMultiLineText(
+        this,
+        tr("网络注释"),
+        tr("说明"),
+        fromUtf8(rung->comment),
+        &accepted);
+    if (!accepted)
+    {
+        return;
+    }
+    const LogicEditorResult result = logic_editor_service_.updateRungComment(
+        current_logic_id_, rung_id, toUtf8(comment));
+    if (!result.succeeded)
+    {
+        showProjectResult(tr("网络注释"), fromUtf8(result.message), false);
+        return;
+    }
+    logic_editor_widget_->reloadLogic();
+    refreshProjectUi();
+    statusBar()->showMessage(tr("网络注释已更新"), 3000);
+}
+
 void MainWindow::deleteSelectedLogicObject()
 {
     const LogicEditorResult result = logic_editor_widget_->deleteSelected();
@@ -1551,13 +1707,25 @@ void MainWindow::applySelectedLogicNodeProperties()
             RegisterAddress{RegisterArea::M, ui_->logicAddressSpinBox->value()},
             static_cast<ContactMode>(ui_->logicModeComboBox->currentData().toInt())};
     }
+    else if (std::holds_alternative<EdgeContactNodeConfig>(config))
+    {
+        config = EdgeContactNodeConfig{
+            RegisterAddress{RegisterArea::M, ui_->logicAddressSpinBox->value()},
+            static_cast<EdgeMode>(ui_->logicModeComboBox->currentData().toInt())};
+    }
+    else if (std::holds_alternative<TimerContactNodeConfig>(config))
+    {
+        config = TimerContactNodeConfig{
+            TimerAddress{ui_->logicAddressSpinBox->value()},
+            static_cast<ContactMode>(ui_->logicModeComboBox->currentData().toInt())};
+    }
     else if (std::holds_alternative<CoilNodeConfig>(config))
     {
         config = CoilNodeConfig{
             RegisterAddress{RegisterArea::M, ui_->logicAddressSpinBox->value()},
             static_cast<CoilMode>(ui_->logicModeComboBox->currentData().toInt())};
     }
-    else
+    else if (std::holds_alternative<CompareNodeConfig>(config))
     {
         config = CompareNodeConfig{
             RegisterAddress{RegisterArea::D, ui_->logicAddressSpinBox->value()},
@@ -1565,6 +1733,12 @@ void MainWindow::applySelectedLogicNodeProperties()
                 ui_->logicComparisonComboBox->currentData().toInt()),
             static_cast<std::int16_t>(ui_->logicValueSpinBox->value())};
     }
+    else
+    {
+        config = TonNodeConfig{
+            TimerAddress{ui_->logicAddressSpinBox->value()},
+            ui_->logicPresetSpinBox->value()};
+    }
 
     const LogicEditorResult result = logic_editor_service_.updateNodeConfig(
         current_logic_id_, selected_logic_node_id_, config);
@@ -1775,13 +1949,19 @@ void MainWindow::updateModeUi(const QString &message)
     ui_->addPageJumpAction->setEnabled(policy.allowsProjectEditing);
     ui_->addAlarmListAction->setEnabled(policy.allowsProjectEditing);
     ui_->configureAlarmsAction->setEnabled(policy.allowsProjectEditing);
+    ui_->configureRegisterCommentsAction->setEnabled(policy.allowsProjectEditing);
     ui_->deleteControlAction->setEnabled(policy.allowsProjectEditing);
     ui_->addNormallyOpenAction->setEnabled(policy.allowsProjectEditing);
     ui_->addNormallyClosedAction->setEnabled(policy.allowsProjectEditing);
+    ui_->addRisingEdgeAction->setEnabled(policy.allowsProjectEditing);
+    ui_->addFallingEdgeAction->setEnabled(policy.allowsProjectEditing);
+    ui_->addTimerContactAction->setEnabled(policy.allowsProjectEditing);
     ui_->addNormalCoilAction->setEnabled(policy.allowsProjectEditing);
     ui_->addSetCoilAction->setEnabled(policy.allowsProjectEditing);
     ui_->addResetCoilAction->setEnabled(policy.allowsProjectEditing);
+    ui_->addTonAction->setEnabled(policy.allowsProjectEditing);
     ui_->addCompareAction->setEnabled(policy.allowsProjectEditing);
+    ui_->editRungCommentAction->setEnabled(policy.allowsProjectEditing);
     ui_->deleteLogicAction->setEnabled(policy.allowsProjectEditing);
     ui_->newProjectAction->setEnabled(policy.allowsProjectEditing);
     ui_->saveProjectAction->setEnabled(policy.allowsProjectEditing);
diff --git a/app/src/ui/main_window.h b/app/src/ui/main_window.h
index 2c22c40..b6b286b 100644
--- a/app/src/ui/main_window.h
+++ b/app/src/ui/main_window.h
@@ -35,6 +35,7 @@ class HmiRuntimeService;
 class AlarmEditorService;
 class AlarmService;
 class HmiNavigationService;
+class RegisterCommentService;
 class HmiEditorWidget;
 class LogicEditorService;
 class LogicEditorWidget;
@@ -67,6 +68,7 @@ public:
         HmiRuntimeService &hmi_runtime_service,
         AlarmEditorService &alarm_editor_service,
         AlarmService &alarm_service,
+        RegisterCommentService &register_comment_service,
         RegisterMonitorService &register_monitor_service,
         QWidget *parent = nullptr);
     MainWindow(
@@ -78,6 +80,7 @@ public:
         AlarmEditorService &alarm_editor_service,
         AlarmService &alarm_service,
         HmiNavigationService &hmi_navigation_service,
+        RegisterCommentService &register_comment_service,
         RegisterMonitorService &register_monitor_service,
         QWidget *parent = nullptr);
 
@@ -101,6 +104,7 @@ private:
     void configurePropertyEditor();
     void configurePlcConnection();
     void configureAlarms();
+    void configureRegisterComments();
     // 刷新工程树和当前 HMI 页面信息
     void refreshProjectUi();
     void handleProjectTreeSelection();
@@ -130,6 +134,7 @@ private:
     void setLogicOutput(const LogicNodeConfig &config);
     // 新增一个梯形图网络
     void addLogicRung();
+    void editSelectedRungComment();
     // 删除当前选中的逻辑节点或网络
     void deleteSelectedLogicObject();
     // 将逻辑属性表单内容应用到当前选中节点
@@ -185,6 +190,7 @@ private:
     HmiRuntimeService &hmi_runtime_service_;
     AlarmEditorService &alarm_editor_service_;
     AlarmService &alarm_service_;
+    RegisterCommentService &register_comment_service_;
     RegisterMonitorService &register_monitor_service_;
     std::unique_ptr<HmiNavigationService> owned_hmi_navigation_service_;
     HmiNavigationService *hmi_navigation_service_ = nullptr;
diff --git a/app/src/ui/main_window.ui b/app/src/ui/main_window.ui
index 44d54f2..5fe8a29 100644
--- a/app/src/ui/main_window.ui
+++ b/app/src/ui/main_window.ui
@@ -254,9 +254,10 @@
     <addaction name="disconnectPlcAction"/>
    </widget>
    <widget class="QMenu" name="viewMenu">
-    <property name="title">
-     <string>视图(&amp;V)</string>
-    </property>
+   <property name="title">
+    <string>视图(&amp;V)</string>
+   </property>
+   <addaction name="configureRegisterCommentsAction"/>
    </widget>
    <addaction name="fileMenu"/>
    <addaction name="runMenu"/>
@@ -326,10 +327,15 @@
    <addaction name="separator"/>
    <addaction name="addNormallyOpenAction"/>
    <addaction name="addNormallyClosedAction"/>
+   <addaction name="addRisingEdgeAction"/>
+   <addaction name="addFallingEdgeAction"/>
+   <addaction name="addTimerContactAction"/>
    <addaction name="addNormalCoilAction"/>
    <addaction name="addSetCoilAction"/>
    <addaction name="addResetCoilAction"/>
+   <addaction name="addTonAction"/>
    <addaction name="addCompareAction"/>
+   <addaction name="editRungCommentAction"/>
    <addaction name="deleteLogicAction"/>
   </widget>
   <widget class="QDockWidget" name="projectDock">
@@ -758,7 +764,27 @@
                </property>
               </widget>
              </item>
-             <item row="7" column="0" colspan="2">
+             <item row="7" column="0">
+              <widget class="QLabel" name="logicPresetLabel">
+               <property name="text">
+                <string>预设时间(ms)</string>
+               </property>
+              </widget>
+             </item>
+             <item row="7" column="1">
+              <widget class="QSpinBox" name="logicPresetSpinBox">
+               <property name="minimum">
+                <number>1</number>
+               </property>
+               <property name="maximum">
+                <number>86400000</number>
+               </property>
+               <property name="value">
+                <number>1000</number>
+               </property>
+              </widget>
+             </item>
+             <item row="8" column="0" colspan="2">
               <widget class="QPushButton" name="applyLogicPropertiesButton">
                <property name="text">
                 <string>应用属性</string>
@@ -848,6 +874,14 @@
     <string>配置参数并连接真实 PLC</string>
    </property>
   </action>
+  <action name="configureRegisterCommentsAction">
+   <property name="text">
+    <string>软元件注释</string>
+   </property>
+   <property name="toolTip">
+    <string>维护工程级 M/D 地址注释</string>
+   </property>
+  </action>
   <action name="disconnectPlcAction">
    <property name="text">
     <string>断开 PLC</string>
@@ -960,6 +994,30 @@
     <string>向当前网络添加常闭触点</string>
    </property>
   </action>
+  <action name="addRisingEdgeAction">
+   <property name="text">
+    <string>上升沿</string>
+   </property>
+   <property name="toolTip">
+    <string>添加一个扫描周期的上升沿触点</string>
+   </property>
+  </action>
+  <action name="addFallingEdgeAction">
+   <property name="text">
+    <string>下降沿</string>
+   </property>
+   <property name="toolTip">
+    <string>添加一个扫描周期的下降沿触点</string>
+   </property>
+  </action>
+  <action name="addTimerContactAction">
+   <property name="text">
+    <string>T 触点</string>
+   </property>
+   <property name="toolTip">
+    <string>添加离线仿真定时器触点</string>
+   </property>
+  </action>
   <action name="addNormalCoilAction">
    <property name="text">
     <string>线圈</string>
@@ -984,6 +1042,14 @@
     <string>设置当前网络的复位线圈</string>
    </property>
   </action>
+  <action name="addTonAction">
+   <property name="text">
+    <string>TON</string>
+   </property>
+   <property name="toolTip">
+    <string>设置非保持接通延时定时器输出</string>
+   </property>
+  </action>
   <action name="addCompareAction">
    <property name="text">
     <string>D 比较</string>
@@ -992,6 +1058,14 @@
     <string>向当前网络添加 D 值与常量比较</string>
    </property>
   </action>
+  <action name="editRungCommentAction">
+   <property name="text">
+    <string>网络注释</string>
+   </property>
+   <property name="toolTip">
+    <string>编辑当前梯形图网络说明</string>
+   </property>
+  </action>
   <action name="deleteLogicAction">
    <property name="text">
     <string>删除</string>
diff --git a/app/src/ui/register_comment_dialog.cpp b/app/src/ui/register_comment_dialog.cpp
new file mode 100644
index 0000000..3fad271
--- /dev/null
+++ b/app/src/ui/register_comment_dialog.cpp
@@ -0,0 +1,155 @@
+#include "register_comment_dialog.h"
+
+#include "services/register_comment_service.h"
+#include "ui_register_comment_dialog.h"
+
+#include <QHeaderView>
+#include <QMessageBox>
+#include <QTableWidgetItem>
+
+#include <optional>
+
+namespace {
+
+QString fromUtf8(const std::string &value)
+{
+    return QString::fromUtf8(value.data(), static_cast<int>(value.size()));
+}
+
+std::string toUtf8(const QString &value)
+{
+    const QByteArray bytes = value.toUtf8();
+    return std::string(bytes.constData(), static_cast<std::size_t>(bytes.size()));
+}
+
+} // namespace
+
+RegisterCommentDialog::RegisterCommentDialog(
+    RegisterCommentService &service,
+    QWidget *parent)
+    : QDialog(parent),
+      ui_(std::make_unique<Ui::RegisterCommentDialog>()),
+      service_(service)
+{
+    ui_->setupUi(this);
+    ui_->commentTable->horizontalHeader()->setSectionResizeMode(
+        0, QHeaderView::ResizeToContents);
+    ui_->commentTable->horizontalHeader()->setSectionResizeMode(
+        1, QHeaderView::Stretch);
+    ui_->areaComboBox->setItemData(0, static_cast<int>(RegisterArea::M));
+    ui_->areaComboBox->setItemData(1, static_cast<int>(RegisterArea::D));
+    connect(ui_->commentTable, &QTableWidget::itemSelectionChanged,
+            this, [this] { loadSelectedComment(); });
+    connect(ui_->saveButton, &QPushButton::clicked,
+            this, [this] { saveComment(); });
+    connect(ui_->removeButton, &QPushButton::clicked,
+            this, [this] { removeComment(); });
+    connect(ui_->buttonBox, &QDialogButtonBox::rejected,
+            this, &QDialog::reject);
+    reloadComments();
+}
+
+RegisterCommentDialog::~RegisterCommentDialog() = default;
+
+void RegisterCommentDialog::reloadComments(
+    const RegisterAddress *selected_address)
+{
+    const auto &comments = service_.comments();
+    ui_->commentTable->setRowCount(static_cast<int>(comments.size()));
+    int selected_row = -1;
+    for (std::size_t index = 0; index < comments.size(); ++index)
+    {
+        const RegisterComment &comment = comments[index];
+        const int row = static_cast<int>(index);
+        auto *address_item = new QTableWidgetItem(
+            QString::fromStdString(comment.address.toString()));
+        address_item->setData(Qt::UserRole, static_cast<int>(comment.address.area()));
+        address_item->setData(Qt::UserRole + 1, comment.address.index());
+        ui_->commentTable->setItem(row, 0, address_item);
+        ui_->commentTable->setItem(row, 1, new QTableWidgetItem(fromUtf8(comment.text)));
+        if (selected_address != nullptr && comment.address == *selected_address)
+        {
+            selected_row = row;
+        }
+    }
+    if (selected_row >= 0)
+    {
+        ui_->commentTable->selectRow(selected_row);
+    }
+    else
+    {
+        ui_->commentTable->clearSelection();
+        ui_->removeButton->setEnabled(false);
+    }
+}
+
+void RegisterCommentDialog::loadSelectedComment()
+{
+    const std::optional<RegisterAddress> address = selectedAddress();
+    const RegisterComment *comment = address.has_value()
+        ? service_.findComment(*address) : nullptr;
+    ui_->removeButton->setEnabled(comment != nullptr);
+    if (comment == nullptr)
+    {
+        return;
+    }
+    ui_->areaComboBox->setCurrentIndex(
+        comment->address.area() == RegisterArea::M ? 0 : 1);
+    ui_->indexSpinBox->setValue(comment->address.index());
+    ui_->commentEdit->setText(fromUtf8(comment->text));
+}
+
+void RegisterCommentDialog::saveComment()
+{
+    const RegisterAddress address = addressFromInputs();
+    const RegisterCommentResult result = service_.setComment(
+        address, toUtf8(ui_->commentEdit->text()));
+    if (!result.succeeded)
+    {
+        QMessageBox::warning(this, tr("保存注释"), fromUtf8(result.message));
+        return;
+    }
+    reloadComments(&address);
+}
+
+void RegisterCommentDialog::removeComment()
+{
+    const std::optional<RegisterAddress> address = selectedAddress();
+    if (!address.has_value())
+    {
+        return;
+    }
+    if (QMessageBox::question(
+            this, tr("删除注释"), tr("确定删除当前软元件注释吗？"))
+        != QMessageBox::Yes)
+    {
+        return;
+    }
+    const RegisterCommentResult result = service_.removeComment(*address);
+    if (!result.succeeded)
+    {
+        QMessageBox::warning(this, tr("删除注释"), fromUtf8(result.message));
+        return;
+    }
+    reloadComments();
+}
+
+RegisterAddress RegisterCommentDialog::addressFromInputs() const
+{
+    const RegisterArea area = static_cast<RegisterArea>(
+        ui_->areaComboBox->currentData().toInt());
+    return RegisterAddress{area, ui_->indexSpinBox->value()};
+}
+
+std::optional<RegisterAddress> RegisterCommentDialog::selectedAddress() const
+{
+    const int row = ui_->commentTable->currentRow();
+    const QTableWidgetItem *item = row >= 0 ? ui_->commentTable->item(row, 0) : nullptr;
+    if (item == nullptr)
+    {
+        return std::nullopt;
+    }
+    return RegisterAddress{
+        static_cast<RegisterArea>(item->data(Qt::UserRole).toInt()),
+        item->data(Qt::UserRole + 1).toInt()};
+}
diff --git a/app/src/ui/register_comment_dialog.h b/app/src/ui/register_comment_dialog.h
new file mode 100644
index 0000000..ede20fa
--- /dev/null
+++ b/app/src/ui/register_comment_dialog.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include "domain/register_address.h"
+
+#include <QDialog>
+
+#include <memory>
+#include <optional>
+
+namespace Ui {
+class RegisterCommentDialog;
+}
+
+class RegisterCommentService;
+
+class RegisterCommentDialog final : public QDialog
+{
+public:
+    explicit RegisterCommentDialog(
+        RegisterCommentService &service,
+        QWidget *parent = nullptr);
+    ~RegisterCommentDialog() override;
+
+private:
+    void reloadComments(const RegisterAddress *selected_address = nullptr);
+    void loadSelectedComment();
+    void saveComment();
+    void removeComment();
+    RegisterAddress addressFromInputs() const;
+    std::optional<RegisterAddress> selectedAddress() const;
+
+    std::unique_ptr<Ui::RegisterCommentDialog> ui_;
+    RegisterCommentService &service_;
+};
diff --git a/app/src/ui/register_comment_dialog.ui b/app/src/ui/register_comment_dialog.ui
new file mode 100644
index 0000000..0bc980b
--- /dev/null
+++ b/app/src/ui/register_comment_dialog.ui
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>RegisterCommentDialog</class>
+ <widget class="QDialog" name="RegisterCommentDialog">
+  <property name="windowTitle"><string>软元件注释</string></property>
+  <property name="minimumSize"><size><width>620</width><height>400</height></size></property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QTableWidget" name="commentTable">
+     <property name="selectionBehavior"><enum>QAbstractItemView::SelectRows</enum></property>
+     <property name="selectionMode"><enum>QAbstractItemView::SingleSelection</enum></property>
+     <property name="editTriggers"><set>QAbstractItemView::NoEditTriggers</set></property>
+     <property name="columnCount"><number>2</number></property>
+     <column><property name="text"><string>地址</string></property></column>
+     <column><property name="text"><string>注释</string></property></column>
+    </widget>
+   </item>
+   <item>
+    <layout class="QFormLayout" name="commentForm">
+     <item row="0" column="0"><widget class="QLabel" name="areaLabel"><property name="text"><string>地址区域</string></property></widget></item>
+     <item row="0" column="1"><widget class="QComboBox" name="areaComboBox"><item><property name="text"><string>M</string></property></item><item><property name="text"><string>D</string></property></item></widget></item>
+     <item row="1" column="0"><widget class="QLabel" name="indexLabel"><property name="text"><string>地址</string></property></widget></item>
+     <item row="1" column="1"><widget class="QSpinBox" name="indexSpinBox"><property name="maximum"><number>4000</number></property></widget></item>
+     <item row="2" column="0"><widget class="QLabel" name="commentLabel"><property name="text"><string>注释</string></property></widget></item>
+     <item row="2" column="1"><widget class="QLineEdit" name="commentEdit"><property name="placeholderText"><string>例如：启动按钮</string></property></widget></item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="operationLayout">
+     <item><widget class="QPushButton" name="saveButton"><property name="text"><string>保存</string></property></widget></item>
+     <item><widget class="QPushButton" name="removeButton"><property name="text"><string>删除</string></property></widget></item>
+     <item><spacer name="operationSpacer"><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><widget class="QDialogButtonBox" name="buttonBox"><property name="standardButtons"><set>QDialogButtonBox::Close</set></property></widget></item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/app/tests/main_window_tests.cpp b/app/tests/main_window_tests.cpp
index b368c86..72db520 100644
--- a/app/tests/main_window_tests.cpp
+++ b/app/tests/main_window_tests.cpp
@@ -11,6 +11,7 @@
 #include "services/project_service.h"
 #include "services/runtime_mode_service.h"
 #include "services/register_monitor_service.h"
+#include "services/register_comment_service.h"
 #include "ui/hmi_editor_widget.h"
 #include "ui/free_monitor_widget.h"
 #include "ui/logic_editor_widget.h"
@@ -29,9 +30,11 @@
 #include <QLabel>
 #include <QLineEdit>
 #include <QListWidget>
+#include <QMenu>
 #include <QPainter>
 #include <QSpinBox>
 #include <QPushButton>
+#include <QStringList>
 #include <QTableWidget>
 #include <QTimer>
 #include <QTest>
@@ -501,6 +504,7 @@ void testModeActionsControlEditingAvailability()
     HmiRuntimeService runtime_service(repository);
     AlarmEditorService alarm_editor_service(project_service);
     AlarmService alarm_service(project_service, repository);
+    RegisterCommentService register_comment_service(project_service);
     OfflineSimulationService simulation_service(repository);
     RuntimeModeService mode_service(project_service, simulation_service);
     RegisterMonitorService monitor_service(repository);
@@ -512,6 +516,7 @@ void testModeActionsControlEditingAvailability()
         runtime_service,
         alarm_editor_service,
         alarm_service,
+        register_comment_service,
         monitor_service);
     window.resize(1000, 640);
     window.show();
@@ -711,6 +716,105 @@ void testModeActionsControlEditingAvailability()
             "rejected online running must restore the editing action");
 }
 
+void testEdgeTimerPropertyEditingAndParallelMenu()
+{
+    TestProjectStorage storage;
+    ProjectService project_service(storage);
+    HmiEditorService editor_service(project_service);
+    LogicEditorService logic_editor_service(project_service);
+    VirtualRegisterRepository repository;
+    HmiRuntimeService runtime_service(repository);
+    AlarmEditorService alarm_editor_service(project_service);
+    AlarmService alarm_service(project_service, repository);
+    RegisterCommentService register_comment_service(project_service);
+    OfflineSimulationService simulation_service(repository);
+    RuntimeModeService mode_service(project_service, simulation_service);
+    RegisterMonitorService monitor_service(repository);
+    MainWindow window(
+        mode_service,
+        project_service,
+        editor_service,
+        logic_editor_service,
+        runtime_service,
+        alarm_editor_service,
+        alarm_service,
+        register_comment_service,
+        monitor_service);
+    window.show();
+    QApplication::processEvents();
+
+    QAction *parallel_action = requiredChild<QAction>(window, "parallelInsertAction");
+    require(parallel_action->menu() != nullptr,
+            "parallel insertion must expose its node type menu");
+    QStringList parallel_labels;
+    for (QAction *action : parallel_action->menu()->actions())
+    {
+        parallel_labels.push_back(action->text());
+    }
+    require(parallel_labels.contains(QStringLiteral("并联上升沿触点"))
+                && parallel_labels.contains(QStringLiteral("并联下降沿触点"))
+                && parallel_labels.contains(QStringLiteral("并联 T 触点")),
+            "parallel insertion must include edge and T contact choices");
+
+    QAction *rising_action = requiredChild<QAction>(window, "addRisingEdgeAction");
+    QAction *falling_action = requiredChild<QAction>(window, "addFallingEdgeAction");
+    QAction *timer_contact_action = requiredChild<QAction>(
+        window, "addTimerContactAction");
+    QAction *ton_action = requiredChild<QAction>(window, "addTonAction");
+    requiredChild<QAction>(window, "editRungCommentAction");
+    requiredChild<QAction>(window, "configureRegisterCommentsAction");
+    QSpinBox *address = requiredChild<QSpinBox>(window, "logicAddressSpinBox");
+    QSpinBox *preset = requiredChild<QSpinBox>(window, "logicPresetSpinBox");
+    QComboBox *mode = requiredChild<QComboBox>(window, "logicModeComboBox");
+    QPushButton *apply = requiredChild<QPushButton>(
+        window, "applyLogicPropertiesButton");
+    const std::string logic_id = logic_editor_service.firstLogicId();
+
+    rising_action->trigger();
+    address->setValue(8);
+    mode->setCurrentIndex(mode->findData(static_cast<int>(EdgeMode::Falling)));
+    apply->click();
+    const LogicNode *edge = logic_editor_service.findNode(logic_id, "edge-1");
+    require(edge != nullptr && edge->configured
+                && std::get<EdgeContactNodeConfig>(edge->config).address.index() == 8
+                && std::get<EdgeContactNodeConfig>(edge->config).mode
+                    == EdgeMode::Falling,
+            "edge properties must update M address and edge mode");
+
+    timer_contact_action->trigger();
+    address->setValue(9);
+    mode->setCurrentIndex(mode->findData(
+        static_cast<int>(ContactMode::NormallyClosed)));
+    apply->click();
+    const LogicNode *timer_contact = logic_editor_service.findNode(
+        logic_id, "timer-contact-1");
+    require(timer_contact != nullptr && timer_contact->configured
+                && std::get<TimerContactNodeConfig>(timer_contact->config).address
+                    == TimerAddress{9}
+                && std::get<TimerContactNodeConfig>(timer_contact->config).mode
+                    == ContactMode::NormallyClosed,
+            "T contact properties must update T address and contact mode");
+
+    ton_action->trigger();
+    require(preset->isEnabled() && !mode->isEnabled(),
+            "TON properties must enable PT and disable irrelevant mode editing");
+    address->setValue(9);
+    preset->setValue(1234);
+    apply->click();
+    const LogicNode *ton = logic_editor_service.findNode(logic_id, "ton-1");
+    require(ton != nullptr && ton->configured
+                && std::get<TonNodeConfig>(ton->config).address == TimerAddress{9}
+                && std::get<TonNodeConfig>(ton->config).presetMs == 1234,
+            "TON properties must update T address and preset milliseconds");
+
+    falling_action->trigger();
+    const LogicNode *falling = logic_editor_service.findNode(logic_id, "edge-2");
+    require(falling != nullptr
+                && std::get<EdgeContactNodeConfig>(falling->config).mode
+                    == EdgeMode::Falling,
+            "falling edge action must create a falling-edge condition");
+}
+
 void testPlcConfigurationUsesDialog()
 {
     PlcSerialConfiguration initial;
@@ -746,6 +850,7 @@ void testPlcConfigurationUsesDialog()
     HmiRuntimeService runtime_service(repository);
     AlarmEditorService alarm_editor_service(project_service);
     AlarmService alarm_service(project_service, repository);
+    RegisterCommentService register_comment_service(project_service);
     OfflineSimulationService simulation_service(repository);
     RuntimeModeService mode_service(project_service, simulation_service);
     RegisterMonitorService monitor_service(repository);
@@ -757,6 +862,7 @@ void testPlcConfigurationUsesDialog()
         runtime_service,
         alarm_editor_service,
         alarm_service,
+        register_comment_service,
         monitor_service);
     require(window.findChild<QComboBox *>(QStringLiteral("serialPortComboBox")) == nullptr,
             "serial configuration controls must not be embedded in the main window");
@@ -791,6 +897,7 @@ void testRepeatedPlcStatusNotificationsAreCoalesced()
     HmiRuntimeService runtime_service(active_repository);
     AlarmEditorService alarm_editor_service(project_service);
     AlarmService alarm_service(project_service, active_repository);
+    RegisterCommentService register_comment_service(project_service);
     OfflineSimulationService simulation_service(virtual_repository);
     RepeatedStatusGateway gateway;
     RuntimeModeService mode_service(project_service, simulation_service);
@@ -805,6 +912,7 @@ void testRepeatedPlcStatusNotificationsAreCoalesced()
         runtime_service,
         alarm_editor_service,
         alarm_service,
+        register_comment_service,
         monitor_service);
     QListWidget *output = requiredChild<QListWidget>(window, "outputList");
     const int initial_count = output->count();
@@ -839,6 +947,7 @@ void testOnlineWorkspaceShowsHmiAndFreeMonitorOnly()
     HmiRuntimeService runtime_service(active_repository);
     AlarmEditorService alarm_editor_service(project_service);
     AlarmService alarm_service(project_service, active_repository);
+    RegisterCommentService register_comment_service(project_service);
     OfflineSimulationService simulation_service(virtual_repository);
     OnlineReadyGateway gateway;
     RuntimeModeService mode_service(project_service, simulation_service);
@@ -853,6 +962,7 @@ void testOnlineWorkspaceShowsHmiAndFreeMonitorOnly()
         runtime_service,
         alarm_editor_service,
         alarm_service,
+        register_comment_service,
         monitor_service);
     window.resize(1200, 760);
     window.show();
@@ -965,6 +1075,7 @@ void testMultiPageAndLogicMainWindowIntegration()
     HmiRuntimeService runtime_service(repository);
     AlarmEditorService alarm_editor_service(project_service);
     AlarmService alarm_service(project_service, repository);
+    RegisterCommentService register_comment_service(project_service);
     OfflineSimulationService simulation_service(repository);
     RuntimeModeService mode_service(project_service, simulation_service);
     RegisterMonitorService monitor_service(repository);
@@ -978,6 +1089,7 @@ void testMultiPageAndLogicMainWindowIntegration()
         alarm_editor_service,
         alarm_service,
         navigation_service,
+        register_comment_service,
         monitor_service);
     window.resize(1400, 820);
     window.show();
@@ -1078,6 +1190,7 @@ int main(int argc, char *argv[])
         testRuntimePageJumpDoesNotRequireRegisterWritePermission();
         testRuntimeAlarmListInteraction();
         testModeActionsControlEditingAvailability();
+        testEdgeTimerPropertyEditingAndParallelMenu();
         testPlcConfigurationUsesDialog();
         testRepeatedPlcStatusNotificationsAreCoalesced();
         testOnlineWorkspaceShowsHmiAndFreeMonitorOnly();
diff --git a/app/tests/main_window_tests.pro b/app/tests/main_window_tests.pro
index 7bbe5e5..f803b7f 100644
--- a/app/tests/main_window_tests.pro
+++ b/app/tests/main_window_tests.pro
@@ -12,6 +12,7 @@ SOURCES += \
     main_window_tests.cpp \
     ../src/ui/main_window.cpp \
     ../src/ui/alarm_configuration_dialog.cpp \
+    ../src/ui/register_comment_dialog.cpp \
     ../src/ui/plc_connection_dialog.cpp \
     ../src/ui/free_monitor_widget.cpp \
     ../src/ui/runtime_monitor_widget.cpp \
@@ -36,11 +37,13 @@ SOURCES += \
     ../src/services/software_logic_executor.cpp \
     ../src/services/offline_simulation_service.cpp \
     ../src/services/runtime_mode_service.cpp \
-    ../src/services/register_monitor_service.cpp
+    ../src/services/register_monitor_service.cpp \
+    ../src/services/register_comment_service.cpp
 
 HEADERS += \
     ../src/ui/main_window.h \
     ../src/ui/alarm_configuration_dialog.h \
+    ../src/ui/register_comment_dialog.h \
     ../src/ui/plc_connection_dialog.h \
     ../src/ui/free_monitor_widget.h \
     ../src/ui/runtime_monitor_widget.h \
@@ -66,7 +69,8 @@ HEADERS += \
     ../src/services/software_logic_executor.h \
     ../src/services/offline_simulation_service.h \
     ../src/services/runtime_mode_service.h \
-    ../src/services/register_monitor_service.h
+    ../src/services/register_monitor_service.h \
+    ../src/services/register_comment_service.h
 
 HEADERS += \
     ../src/services/plc_communication_gateway.h
@@ -74,6 +78,7 @@ HEADERS += \
 FORMS += \
     ../src/ui/main_window.ui \
     ../src/ui/alarm_configuration_dialog.ui \
+    ../src/ui/register_comment_dialog.ui \
     ../src/ui/plc_connection_dialog.ui \
     ../src/ui/free_monitor_widget.ui \
     ../src/ui/runtime_monitor_widget.ui