diff --git a/app/src/domain/control_logic_model.cpp b/app/src/domain/control_logic_model.cpp
index af7b78a..5ebb5df 100644
--- a/app/src/domain/control_logic_model.cpp
+++ b/app/src/domain/control_logic_model.cpp
@@ -229,7 +229,9 @@ bool validateUniqueExpressionIds(
 
 void normalizeExpression(ConditionExpression *expression)
 {
-    if (expression == nullptr || expression->kind == ConditionExpressionKind::Node)
+    if (expression == nullptr
+        || expression->kind == ConditionExpressionKind::Node
+        || expression->kind == ConditionExpressionKind::Wire)
     {
         return;
     }
@@ -479,6 +481,26 @@ ConditionExpression ConditionExpression::fromNode(LogicNode logic_node)
     return expression;
 }
 
+bool WireSegment::validate(std::string *error) const
+{
+    if (columnSpan < kMinimumColumnSpan || columnSpan > kMaximumColumnSpan)
+    {
+        setError(error, "横线跨度必须在 1~256 列范围内");
+        return false;
+    }
+    return true;
+}
+
+ConditionExpression ConditionExpression::fromWire(
+    std::string expression_id, int column_span)
+{
+    ConditionExpression expression;
+    expression.id = std::move(expression_id);
+    expression.kind = ConditionExpressionKind::Wire;
+    expression.wire = WireSegment{column_span};
+    return expression;
+}
+
 bool ConditionExpression::validate(std::string *error) const
 {
     if (id.empty())
@@ -488,14 +510,30 @@ bool ConditionExpression::validate(std::string *error) const
     }
     if (kind == ConditionExpressionKind::Node)
     {
-        if (!node.has_value() || !children.empty() || !node->isCondition())
+        if (!node.has_value() || wire.has_value()
+            || !children.empty() || !node->isCondition())
         {
             setError(error, "条件叶节点必须包含一个条件节点且不能包含子表达式");
             return false;
         }
         return node->validate(error);
     }
-    if (node.has_value() || children.size() < 2U)
+    if (kind == ConditionExpressionKind::Wire)
+    {
+        if (node.has_value() || !wire.has_value() || !children.empty())
+        {
+            setError(error, "横线叶节点必须包含横线配置且不能包含逻辑节点或子表达式");
+            return false;
+        }
+        return wire->validate(error);
+    }
+    if (kind != ConditionExpressionKind::Series
+        && kind != ConditionExpressionKind::Parallel)
+    {
+        setError(error, "条件表达式使用了不支持的类型");
+        return false;
+    }
+    if (node.has_value() || wire.has_value() || children.size() < 2U)
     {
         setError(error, "串联和并联表达式至少需要两个子表达式");
         return false;
@@ -530,6 +568,10 @@ bool ConditionExpression::validateForRunning(std::string *error) const
         }
         return true;
     }
+    if (kind == ConditionExpressionKind::Wire)
+    {
+        return true;
+    }
     for (const ConditionExpression &child : children)
     {
         if (!child.validateForRunning(error))
@@ -548,6 +590,7 @@ void normalizeConditionExpression(std::optional<ConditionExpression> *expression
     }
     normalizeExpression(&expression->value());
     if (expression->value().kind != ConditionExpressionKind::Node
+        && expression->value().kind != ConditionExpressionKind::Wire
         && expression->value().children.empty())
     {
         expression->reset();
@@ -557,6 +600,10 @@ void normalizeConditionExpression(std::optional<ConditionExpression> *expression
 const LogicNode *findConditionNode(
     const ConditionExpression &expression, const std::string &node_id)
 {
+    if (expression.kind == ConditionExpressionKind::Wire)
+    {
+        return nullptr;
+    }
     if (expression.kind == ConditionExpressionKind::Node)
     {
         return expression.node->id == node_id ? &*expression.node : nullptr;
@@ -615,6 +662,10 @@ void collectConditionNodes(
         nodes->push_back(&*expression.node);
         return;
     }
+    if (expression.kind == ConditionExpressionKind::Wire)
+    {
+        return;
+    }
     for (const ConditionExpression &child : expression.children)
     {
         collectConditionNodes(child, nodes);
diff --git a/app/src/domain/control_logic_model.h b/app/src/domain/control_logic_model.h
index fde5952..092c9f2 100644
--- a/app/src/domain/control_logic_model.h
+++ b/app/src/domain/control_logic_model.h
@@ -204,19 +204,32 @@ struct LogicNode
 enum class ConditionExpressionKind
 {
     Node,
+    Wire,
     Series,
     Parallel
 };
 
+struct WireSegment
+{
+    static constexpr int kMinimumColumnSpan = 1;
+    static constexpr int kMaximumColumnSpan = 256;
+
+    int columnSpan = 1;
+
+    bool validate(std::string *error = nullptr) const;
+};
+
 // 结构化表达式只允许合法的串并联拓扑，不保存可产生悬空线或环路的像素连接
 struct ConditionExpression
 {
     std::string id;
     ConditionExpressionKind kind = ConditionExpressionKind::Node;
     std::optional<LogicNode> node;
+    std::optional<WireSegment> wire;
     std::vector<ConditionExpression> children;
 
     static ConditionExpression fromNode(LogicNode node);
+    static ConditionExpression fromWire(std::string id, int column_span = 1);
     bool validate(std::string *error = nullptr) const;
     bool validateForRunning(std::string *error = nullptr) const;
 };
diff --git a/app/src/infrastructure/json_project_storage.cpp b/app/src/infrastructure/json_project_storage.cpp
index 34938d7..907c7b2 100644
--- a/app/src/infrastructure/json_project_storage.cpp
+++ b/app/src/infrastructure/json_project_storage.cpp
@@ -1468,6 +1468,8 @@ QString expressionKindText(ConditionExpressionKind kind)
     {
     case ConditionExpressionKind::Node:
         return QStringLiteral("node");
+    case ConditionExpressionKind::Wire:
+        return QStringLiteral("wire");
     case ConditionExpressionKind::Series:
         return QStringLiteral("series");
     case ConditionExpressionKind::Parallel:
@@ -1485,6 +1487,10 @@ QJsonObject serializeConditionExpression(const ConditionExpression &expression)
     {
         object.insert(QStringLiteral("node"), serializeLogicNode(*expression.node));
     }
+    else if (expression.kind == ConditionExpressionKind::Wire)
+    {
+        object.insert(QStringLiteral("columnSpan"), expression.wire->columnSpan);
+    }
     else
     {
         QJsonArray children;
@@ -1525,11 +1531,29 @@ bool parseConditionExpression(
         expression->node = std::move(parsed_node);
         return true;
     }
+    if (kind == "wire")
+    {
+        int column_span = 0;
+        if (!readInt(
+                object,
+                "columnSpan",
+                context,
+                WireSegment::kMinimumColumnSpan,
+                WireSegment::kMaximumColumnSpan,
+                &column_span,
+                state))
+        {
+            return false;
+        }
+        expression->kind = ConditionExpressionKind::Wire;
+        expression->wire = WireSegment{column_span};
+        return true;
+    }
     if (kind != "series" && kind != "parallel")
     {
         return state->fail(
             ProjectStorageError::InvalidField,
-            context + ".kind 必须是 node、series 或 parallel");
+            context + ".kind 必须是 node、wire、series 或 parallel");
     }
     QJsonArray children;
     if (!readArray(object, "children", context, &children, state))
diff --git a/app/src/services/logic_editor_service.cpp b/app/src/services/logic_editor_service.cpp
index e5441fb..1d629d8 100644
--- a/app/src/services/logic_editor_service.cpp
+++ b/app/src/services/logic_editor_service.cpp
@@ -75,18 +75,43 @@ ConditionExpression *findParentExpression(
 
 using NodeIdSet = std::unordered_set<std::string>;
 
-NodeIdSet conditionNodeIds(const ConditionExpression &expression)
+NodeIdSet conditionLeafIds(const ConditionExpression &expression)
 {
-    std::vector<const LogicNode *> nodes;
-    collectConditionNodes(expression, &nodes);
     NodeIdSet ids;
-    for (const LogicNode *node : nodes)
+    if (expression.kind == ConditionExpressionKind::Node
+        || expression.kind == ConditionExpressionKind::Wire)
     {
-        ids.insert(node->id);
+        ids.insert(expression.id);
+        return ids;
+    }
+    for (const ConditionExpression &child : expression.children)
+    {
+        NodeIdSet child_ids = conditionLeafIds(child);
+        ids.insert(child_ids.cbegin(), child_ids.cend());
     }
     return ids;
 }
 
+int expressionColumns(const ConditionExpression &expression)
+{
+    if (expression.kind == ConditionExpressionKind::Node)
+    {
+        return 1;
+    }
+    if (expression.kind == ConditionExpressionKind::Wire)
+    {
+        return expression.wire->columnSpan;
+    }
+    int columns = expression.kind == ConditionExpressionKind::Series ? 0 : 1;
+    for (const ConditionExpression &child : expression.children)
+    {
+        const int child_columns = expressionColumns(child);
+        columns = expression.kind == ConditionExpressionKind::Series
+            ? columns + child_columns : std::max(columns, child_columns);
+    }
+    return columns;
+}
+
 bool isSubset(const NodeIdSet &subset, const NodeIdSet &values)
 {
     return std::all_of(
@@ -124,7 +149,7 @@ bool addParallelForSelection(
     const std::string &parallel_id,
     const std::string &series_id)
 {
-    const NodeIdSet expression_ids = conditionNodeIds(*expression);
+    const NodeIdSet expression_ids = conditionLeafIds(*expression);
     if (sameValues(expression_ids, selected_ids))
     {
         addParallelSibling(expression, std::move(*branch), parallel_id);
@@ -136,7 +161,7 @@ bool addParallelForSelection(
     std::vector<std::size_t> matching_children;
     for (std::size_t index = 0; index < expression->children.size(); ++index)
     {
-        child_ids.push_back(conditionNodeIds(expression->children[index]));
+        child_ids.push_back(conditionLeafIds(expression->children[index]));
         const bool intersects = std::any_of(
             child_ids.back().cbegin(), child_ids.back().cend(),
             [&selected_ids](const std::string &id)
@@ -212,7 +237,9 @@ bool addParallelForSelection(
 bool removeExpressionRecursive(
     ConditionExpression *expression, const std::string &expression_id)
 {
-    if (expression == nullptr || expression->kind == ConditionExpressionKind::Node)
+    if (expression == nullptr
+        || expression->kind == ConditionExpressionKind::Node
+        || expression->kind == ConditionExpressionKind::Wire)
     {
         return false;
     }
@@ -238,6 +265,65 @@ bool removeExpressionRecursive(
     return false;
 }
 
+std::optional<int> selectedExpressionColumns(
+    const ConditionExpression &expression,
+    const NodeIdSet &selected_ids)
+{
+    const NodeIdSet expression_ids = conditionLeafIds(expression);
+    if (sameValues(expression_ids, selected_ids))
+    {
+        return expressionColumns(expression);
+    }
+    if (expression.kind == ConditionExpressionKind::Node
+        || expression.kind == ConditionExpressionKind::Wire)
+    {
+        return std::nullopt;
+    }
+
+    std::vector<NodeIdSet> child_ids;
+    std::vector<std::size_t> matching_children;
+    child_ids.reserve(expression.children.size());
+    for (std::size_t index = 0; index < expression.children.size(); ++index)
+    {
+        child_ids.push_back(conditionLeafIds(expression.children[index]));
+        const bool intersects = std::any_of(
+            child_ids.back().cbegin(), child_ids.back().cend(),
+            [&selected_ids](const std::string &id)
+            {
+                return selected_ids.count(id) != 0U;
+            });
+        if (intersects)
+        {
+            matching_children.push_back(index);
+        }
+    }
+    if (matching_children.size() == 1U)
+    {
+        return selectedExpressionColumns(
+            expression.children[matching_children.front()], selected_ids);
+    }
+    if (matching_children.empty()
+        || expression.kind != ConditionExpressionKind::Series)
+    {
+        return std::nullopt;
+    }
+    const std::size_t first = matching_children.front();
+    const std::size_t last = matching_children.back();
+    if (last - first + 1U != matching_children.size())
+    {
+        return std::nullopt;
+    }
+    NodeIdSet range_ids;
+    int columns = 0;
+    for (std::size_t index = first; index <= last; ++index)
+    {
+        range_ids.insert(child_ids[index].cbegin(), child_ids[index].cend());
+        columns += expressionColumns(expression.children[index]);
+    }
+    return sameValues(range_ids, selected_ids)
+        ? std::optional<int>{columns} : std::nullopt;
+}
+
 LadderRung *findEditableRung(
     Project &project,
     const std::string &logic_id,
@@ -329,6 +415,7 @@ bool LogicEditorService::expressionsEqual(
 {
     if (left.id != right.id || left.kind != right.kind
         || left.node.has_value() != right.node.has_value()
+        || left.wire.has_value() != right.wire.has_value()
         || left.children.size() != right.children.size())
     {
         return false;
@@ -337,6 +424,11 @@ bool LogicEditorService::expressionsEqual(
     {
         return false;
     }
+    if (left.wire.has_value()
+        && left.wire->columnSpan != right.wire->columnSpan)
+    {
+        return false;
+    }
     for (std::size_t index = 0; index < left.children.size(); ++index)
     {
         if (!expressionsEqual(left.children[index], right.children[index]))
@@ -809,6 +901,50 @@ LogicEditorResult LogicEditorService::appendCondition(
     return {true, LogicEditorError::None, {}, node_id};
 }
 
+LogicEditorResult LogicEditorService::appendWire(
+    const std::string &logic_id,
+    const std::string &rung_id,
+    int column_span)
+{
+    const ControlLogic *logic = findLogic(logic_id);
+    if (logic == nullptr || findRung(logic_id, rung_id) == nullptr)
+    {
+        return failure(
+            logic == nullptr ? LogicEditorError::LogicNotFound
+                             : LogicEditorError::RungNotFound,
+            logic == nullptr ? "未找到控制逻辑" : "未找到梯形图网络");
+    }
+    WireSegment wire{column_span};
+    std::string error;
+    if (!wire.validate(&error))
+    {
+        return failure(LogicEditorError::InvalidOperation, error);
+    }
+    const std::string wire_id = makeUniqueWireId(*logic);
+    ConditionExpression leaf = ConditionExpression::fromWire(wire_id, column_span);
+    HistoryState before = captureState();
+    LadderRung *rung = findEditableRung(
+        project_service_.editProject(), logic_id, rung_id);
+    if (!rung->condition.has_value())
+    {
+        rung->condition = std::move(leaf);
+    }
+    else if (rung->condition->kind == ConditionExpressionKind::Series)
+    {
+        rung->condition->children.push_back(std::move(leaf));
+    }
+    else
+    {
+        rung->condition = makeContainer(
+            makeUniqueExpressionId(*logic),
+            ConditionExpressionKind::Series,
+            std::move(*rung->condition),
+            std::move(leaf));
+    }
+    recordHistory(std::move(before));
+    return {true, LogicEditorError::None, {}, wire_id};
+}
+
 LogicEditorResult LogicEditorService::insertConditionAfter(
     const std::string &logic_id,
     const std::string &rung_id,
@@ -858,6 +994,91 @@ LogicEditorResult LogicEditorService::insertConditionAfter(
     return {true, LogicEditorError::None, {}, node_id};
 }
 
+LogicEditorResult LogicEditorService::insertWireAfter(
+    const std::string &logic_id,
+    const std::string &rung_id,
+    const std::string &target_expression_id,
+    int column_span)
+{
+    const ControlLogic *logic = findLogic(logic_id);
+    const LadderRung *existing_rung = findRung(logic_id, rung_id);
+    const ConditionExpression *target = findExpression(
+        logic_id, rung_id, target_expression_id);
+    WireSegment wire{column_span};
+    std::string error;
+    if (logic == nullptr || existing_rung == nullptr || target == nullptr)
+    {
+        return failure(LogicEditorError::ExpressionNotFound, "未找到横线插入位置");
+    }
+    if ((target->kind != ConditionExpressionKind::Node
+         && target->kind != ConditionExpressionKind::Wire)
+        || !wire.validate(&error))
+    {
+        return failure(
+            LogicEditorError::InvalidOperation,
+            error.empty() ? "只能在触点或横线后插入横线" : error);
+    }
+    const std::string wire_id = makeUniqueWireId(*logic);
+    ConditionExpression leaf = ConditionExpression::fromWire(wire_id, column_span);
+    HistoryState before = captureState();
+    LadderRung *rung = findEditableRung(
+        project_service_.editProject(), logic_id, rung_id);
+    ConditionExpression *editable_target = findConditionExpression(
+        *rung->condition, target_expression_id);
+    ConditionExpression *parent = findParentExpression(
+        *rung->condition, target_expression_id);
+    if (parent != nullptr && parent->kind == ConditionExpressionKind::Series)
+    {
+        const auto target_iterator = std::find_if(
+            parent->children.begin(), parent->children.end(),
+            [&target_expression_id](const ConditionExpression &child)
+            {
+                return child.id == target_expression_id;
+            });
+        parent->children.insert(target_iterator + 1, std::move(leaf));
+    }
+    else
+    {
+        ConditionExpression original = std::move(*editable_target);
+        *editable_target = makeContainer(
+            makeUniqueExpressionId(*logic),
+            ConditionExpressionKind::Series,
+            std::move(original),
+            std::move(leaf));
+    }
+    recordHistory(std::move(before));
+    return {true, LogicEditorError::None, {}, wire_id};
+}
+
+LogicEditorResult LogicEditorService::replaceWireWithCondition(
+    const std::string &logic_id,
+    const std::string &rung_id,
+    const std::string &wire_expression_id,
+    const LogicNodeConfig &config)
+{
+    const ControlLogic *logic = findLogic(logic_id);
+    const ConditionExpression *wire = findExpression(
+        logic_id, rung_id, wire_expression_id);
+    if (logic == nullptr || wire == nullptr
+        || wire->kind != ConditionExpressionKind::Wire)
+    {
+        return failure(LogicEditorError::ExpressionNotFound, "未找到要替换的横线");
+    }
+    if (!isConditionConfig(config))
+    {
+        return failure(LogicEditorError::InvalidNode, "横线只能替换为条件节点");
+    }
+    const std::string node_id = makeUniqueNodeId(*logic, nodePrefix(config));
+    HistoryState before = captureState();
+    LadderRung *rung = findEditableRung(
+        project_service_.editProject(), logic_id, rung_id);
+    ConditionExpression *editable = findConditionExpression(
+        *rung->condition, wire_expression_id);
+    *editable = ConditionExpression::fromNode(makeNode(node_id, config));
+    recordHistory(std::move(before));
+    return {true, LogicEditorError::None, {}, node_id};
+}
+
 LogicEditorResult LogicEditorService::addParallelBranch(
     const std::string &logic_id,
     const std::string &rung_id,
@@ -885,7 +1106,7 @@ LogicEditorResult LogicEditorService::addParallelBranch(
             LogicEditorError::InvalidOperation,
             "并联选择中存在重复节点");
     }
-    const NodeIdSet available_ids = conditionNodeIds(*existing_rung->condition);
+    const NodeIdSet available_ids = conditionLeafIds(*existing_rung->condition);
     if (!isSubset(selected_ids, available_ids))
     {
         return failure(
@@ -918,6 +1139,72 @@ LogicEditorResult LogicEditorService::addParallelBranch(
     return {true, LogicEditorError::None, {}, node_id};
 }
 
+LogicEditorResult LogicEditorService::addParallelWireBranch(
+    const std::string &logic_id,
+    const std::string &rung_id,
+    const std::vector<std::string> &selected_expression_ids)
+{
+    const ControlLogic *logic = findLogic(logic_id);
+    const LadderRung *existing_rung = findRung(logic_id, rung_id);
+    if (logic == nullptr || existing_rung == nullptr
+        || !existing_rung->condition.has_value())
+    {
+        return failure(LogicEditorError::RungNotFound, "未找到梯形图条件网络");
+    }
+    if (selected_expression_ids.empty())
+    {
+        return failure(
+            LogicEditorError::InvalidOperation,
+            "建立竖线连接前必须选择连续的触点或横线");
+    }
+    NodeIdSet selected_ids(
+        selected_expression_ids.cbegin(), selected_expression_ids.cend());
+    if (selected_ids.size() != selected_expression_ids.size())
+    {
+        return failure(LogicEditorError::InvalidOperation, "并联选择中存在重复对象");
+    }
+    const NodeIdSet available_ids = conditionLeafIds(*existing_rung->condition);
+    if (!isSubset(selected_ids, available_ids))
+    {
+        return failure(LogicEditorError::ExpressionNotFound, "并联选择中包含未知对象");
+    }
+    const std::optional<int> column_span = selectedExpressionColumns(
+        *existing_rung->condition, selected_ids);
+    if (!column_span.has_value()
+        || *column_span > WireSegment::kMaximumColumnSpan)
+    {
+        return failure(
+            LogicEditorError::InvalidOperation,
+            "竖线连接只能围绕同一支路中的连续逻辑范围");
+    }
+
+    const std::string wire_id = makeUniqueWireId(*logic);
+    ConditionExpression wire = ConditionExpression::fromWire(
+        wire_id, *column_span);
+    const std::string parallel_id = makeUniqueExpressionId(*logic);
+    std::string series_id = parallel_id + "-range";
+    while (findExpression(logic_id, rung_id, series_id) != nullptr)
+    {
+        series_id += "-range";
+    }
+    HistoryState before = captureState();
+    LadderRung *rung = findEditableRung(
+        project_service_.editProject(), logic_id, rung_id);
+    if (!addParallelForSelection(
+            &*rung->condition,
+            selected_ids,
+            &wire,
+            parallel_id,
+            series_id))
+    {
+        return failure(
+            LogicEditorError::InvalidOperation,
+            "竖线连接只能围绕同一支路中的连续逻辑范围");
+    }
+    recordHistory(std::move(before));
+    return {true, LogicEditorError::None, {}, wire_id};
+}
+
 LogicEditorResult LogicEditorService::setOutput(
     const std::string &logic_id,
     const std::string &rung_id,
@@ -1100,6 +1387,58 @@ LogicEditorResult LogicEditorService::removeExpression(
     return {true, LogicEditorError::None, {}, expression_id};
 }
 
+LogicEditorResult LogicEditorService::removeExpressions(
+    const std::string &logic_id,
+    const std::string &rung_id,
+    const std::vector<std::string> &expression_ids)
+{
+    const LadderRung *existing_rung = findRung(logic_id, rung_id);
+    if (existing_rung == nullptr || !existing_rung->condition.has_value())
+    {
+        return failure(LogicEditorError::RungNotFound, "未找到梯形图条件网络");
+    }
+    if (expression_ids.empty())
+    {
+        return failure(LogicEditorError::InvalidOperation, "请先选择要删除的条件或横线");
+    }
+    NodeIdSet unique_ids;
+    for (const std::string &expression_id : expression_ids)
+    {
+        const ConditionExpression *expression = findExpression(
+            logic_id, rung_id, expression_id);
+        if (!unique_ids.insert(expression_id).second)
+        {
+            return failure(LogicEditorError::InvalidOperation, "删除列表中存在重复对象");
+        }
+        if (expression == nullptr)
+        {
+            return failure(
+                LogicEditorError::ExpressionNotFound,
+                "删除列表中包含未知条件表达式");
+        }
+    }
+
+    HistoryState before = captureState();
+    LadderRung *rung = findEditableRung(
+        project_service_.editProject(), logic_id, rung_id);
+    for (const std::string &expression_id : expression_ids)
+    {
+        if (!rung->condition.has_value())
+        {
+            break;
+        }
+        if (rung->condition->id == expression_id)
+        {
+            rung->condition.reset();
+            break;
+        }
+        removeExpressionRecursive(&*rung->condition, expression_id);
+    }
+    normalizeConditionExpression(&rung->condition);
+    recordHistory(std::move(before));
+    return {true, LogicEditorError::None, {}, expression_ids.front()};
+}
+
 bool LogicEditorService::canUndo() const
 {
     return history_.canUndo();
@@ -1225,6 +1564,25 @@ std::string LogicEditorService::makeUniqueNodeId(
     }
 }
 
+std::string LogicEditorService::makeUniqueWireId(const ControlLogic &logic)
+{
+    for (std::size_t index = 1;; ++index)
+    {
+        const std::string candidate = "wire-" + std::to_string(index);
+        const bool found = std::any_of(
+            logic.rungs.cbegin(), logic.rungs.cend(),
+            [&candidate](const LadderRung &rung)
+            {
+                return rung.condition.has_value()
+                    && findConditionExpression(*rung.condition, candidate) != nullptr;
+            });
+        if (!found)
+        {
+            return candidate;
+        }
+    }
+}
+
 std::string LogicEditorService::makeUniqueExpressionId(const ControlLogic &logic)
 {
     for (std::size_t index = 1;; ++index)
diff --git a/app/src/services/logic_editor_service.h b/app/src/services/logic_editor_service.h
index c2045ae..82c01e3 100644
--- a/app/src/services/logic_editor_service.h
+++ b/app/src/services/logic_editor_service.h
@@ -68,16 +68,34 @@ public:
         const std::string &logic_id,
         const std::string &rung_id,
         const LogicNodeConfig &config);
+    LogicEditorResult appendWire(
+        const std::string &logic_id,
+        const std::string &rung_id,
+        int column_span = 1);
     LogicEditorResult insertConditionAfter(
         const std::string &logic_id,
         const std::string &rung_id,
         const std::string &target_node_id,
         const LogicNodeConfig &config);
+    LogicEditorResult insertWireAfter(
+        const std::string &logic_id,
+        const std::string &rung_id,
+        const std::string &target_expression_id,
+        int column_span = 1);
+    LogicEditorResult replaceWireWithCondition(
+        const std::string &logic_id,
+        const std::string &rung_id,
+        const std::string &wire_expression_id,
+        const LogicNodeConfig &config);
     LogicEditorResult addParallelBranch(
         const std::string &logic_id,
         const std::string &rung_id,
         const std::vector<std::string> &selected_node_ids,
         const LogicNodeConfig &config);
+    LogicEditorResult addParallelWireBranch(
+        const std::string &logic_id,
+        const std::string &rung_id,
+        const std::vector<std::string> &selected_expression_ids);
     LogicEditorResult setOutput(
         const std::string &logic_id,
         const std::string &rung_id,
@@ -96,6 +114,10 @@ public:
         const std::string &logic_id,
         const std::string &rung_id,
         const std::string &expression_id);
+    LogicEditorResult removeExpressions(
+        const std::string &logic_id,
+        const std::string &rung_id,
+        const std::vector<std::string> &expression_ids);
 
     bool canUndo() const;
     bool canRedo() const;
@@ -129,6 +151,7 @@ private:
     static std::string nodePrefix(const LogicNodeConfig &config);
     static std::string makeUniqueNodeId(
         const ControlLogic &logic, const std::string &prefix);
+    static std::string makeUniqueWireId(const ControlLogic &logic);
     static std::string makeUniqueExpressionId(const ControlLogic &logic);
     static std::string makeUniqueRungId(const ControlLogic &logic);
     static LogicEditorResult failure(
diff --git a/app/src/services/software_logic_executor.cpp b/app/src/services/software_logic_executor.cpp
index 90670b8..122d2b5 100644
--- a/app/src/services/software_logic_executor.cpp
+++ b/app/src/services/software_logic_executor.cpp
@@ -74,7 +74,10 @@ bool coilModesAreCompatible(CoilMode existing, CoilMode current)
 void LogicTraceValues::clear()
 {
     nodeValues.clear();
+    nodePowerValues.clear();
     expressionValues.clear();
+    expressionInputValues.clear();
+    expressionPowerValues.clear();
     rungValues.clear();
     tonValues.clear();
     counterValues.clear();
@@ -95,7 +98,10 @@ LogicTraceSnapshot LogicTraceSnapshot::forLogic(
     if (values != logicValues.cend())
     {
         projection.nodeValues = values->second.nodeValues;
+        projection.nodePowerValues = values->second.nodePowerValues;
         projection.expressionValues = values->second.expressionValues;
+        projection.expressionInputValues = values->second.expressionInputValues;
+        projection.expressionPowerValues = values->second.expressionPowerValues;
         projection.rungValues = values->second.rungValues;
         projection.tonValues = values->second.tonValues;
         projection.counterValues = values->second.counterValues;
@@ -224,7 +230,12 @@ LogicScanResult SoftwareLogicExecutor::executeScanAt(
 
             bool rung_value = false;
             LogicScanResult result = evaluateExpression(
-                logic.id, *rung.condition, repository, logic_trace, &rung_value);
+                logic.id,
+                *rung.condition,
+                repository,
+                logic_trace,
+                true,
+                &rung_value);
             if (!result.succeeded)
             {
                 result.logicId = logic.id;
@@ -235,6 +246,7 @@ LogicScanResult SoftwareLogicExecutor::executeScanAt(
             {
                 logic_trace->rungValues[rung.id] = rung_value;
                 logic_trace->nodeValues[rung.output->id] = rung_value;
+                logic_trace->nodePowerValues[rung.output->id] = rung_value;
             }
             bool output_value = false;
             result = executeOutput(
@@ -254,6 +266,7 @@ LogicScanResult SoftwareLogicExecutor::executeScanAt(
             if (logic_trace != nullptr)
             {
                 logic_trace->nodeValues[rung.output->id] = output_value;
+                logic_trace->nodePowerValues[rung.output->id] = output_value;
             }
         }
     }
@@ -268,7 +281,10 @@ LogicScanResult SoftwareLogicExecutor::executeScanAt(
             if (values != trace->logicValues.cend())
             {
                 trace->nodeValues = values->second.nodeValues;
+                trace->nodePowerValues = values->second.nodePowerValues;
                 trace->expressionValues = values->second.expressionValues;
+                trace->expressionInputValues = values->second.expressionInputValues;
+                trace->expressionPowerValues = values->second.expressionPowerValues;
                 trace->rungValues = values->second.rungValues;
                 trace->tonValues = values->second.tonValues;
                 trace->counterValues = values->second.counterValues;
@@ -284,12 +300,27 @@ LogicScanResult SoftwareLogicExecutor::evaluateExpression(
     const ConditionExpression &expression,
     RegisterRepository &repository,
     LogicTraceValues *trace,
+    bool input_power,
     bool *value)
 {
     if (value == nullptr)
     {
         return failure(LogicScanError::InvalidLogic, "缺少表达式结果接收对象");
     }
+    if (trace != nullptr)
+    {
+        trace->expressionInputValues[expression.id] = input_power;
+    }
+    if (expression.kind == ConditionExpressionKind::Wire)
+    {
+        *value = true;
+        if (trace != nullptr)
+        {
+            trace->expressionValues[expression.id] = true;
+            trace->expressionPowerValues[expression.id] = input_power;
+        }
+        return success();
+    }
     if (expression.kind == ConditionExpressionKind::Node)
     {
         LogicScanResult result = evaluateCondition(
@@ -297,28 +328,43 @@ LogicScanResult SoftwareLogicExecutor::evaluateExpression(
         if (result.succeeded && trace != nullptr)
         {
             trace->nodeValues[expression.node->id] = *value;
+            trace->nodePowerValues[expression.node->id] = input_power && *value;
             trace->expressionValues[expression.id] = *value;
+            trace->expressionPowerValues[expression.id] = input_power && *value;
         }
         return result;
     }
 
     bool accumulated = expression.kind == ConditionExpressionKind::Series;
+    bool power = input_power;
     for (const ConditionExpression &child : expression.children)
     {
         bool child_value = false;
+        const bool child_input = expression.kind == ConditionExpressionKind::Series
+            ? power : input_power;
         LogicScanResult result = evaluateExpression(
-            logic_id, child, repository, trace, &child_value);
+            logic_id,
+            child,
+            repository,
+            trace,
+            child_input,
+            &child_value);
         if (!result.succeeded)
         {
             return result;
         }
         accumulated = expression.kind == ConditionExpressionKind::Series
             ? accumulated && child_value : accumulated || child_value;
+        if (expression.kind == ConditionExpressionKind::Series)
+        {
+            power = power && child_value;
+        }
     }
     *value = accumulated;
     if (trace != nullptr)
     {
         trace->expressionValues[expression.id] = accumulated;
+        trace->expressionPowerValues[expression.id] = input_power && accumulated;
     }
     return success();
 }
diff --git a/app/src/services/software_logic_executor.h b/app/src/services/software_logic_executor.h
index fd59a31..209025b 100644
--- a/app/src/services/software_logic_executor.h
+++ b/app/src/services/software_logic_executor.h
@@ -56,7 +56,10 @@ struct WordTraceValue
 struct LogicTraceValues
 {
     std::unordered_map<std::string, bool> nodeValues;
+    std::unordered_map<std::string, bool> nodePowerValues;
     std::unordered_map<std::string, bool> expressionValues;
+    std::unordered_map<std::string, bool> expressionInputValues;
+    std::unordered_map<std::string, bool> expressionPowerValues;
     std::unordered_map<std::string, bool> rungValues;
     std::unordered_map<std::string, TonTraceValue> tonValues;
     std::unordered_map<std::string, CounterTraceValue> counterValues;
@@ -111,6 +114,7 @@ private:
         const ConditionExpression &expression,
         RegisterRepository &repository,
         LogicTraceValues *trace,
+        bool input_power,
         bool *value);
     LogicScanResult executeOutput(
         const std::string &logic_id,
diff --git a/app/src/ui/logic_editor_widget.cpp b/app/src/ui/logic_editor_widget.cpp
index 6d0b5c7..91d58b9 100644
--- a/app/src/ui/logic_editor_widget.cpp
+++ b/app/src/ui/logic_editor_widget.cpp
@@ -182,6 +182,10 @@ ExpressionMetrics measureExpression(const ConditionExpression &expression)
     {
         return {};
     }
+    if (expression.kind == ConditionExpressionKind::Wire)
+    {
+        return {expression.wire->columnSpan, 1};
+    }
 
     ExpressionMetrics metrics{0, 0};
     if (expression.kind == ConditionExpressionKind::Series)
@@ -273,14 +277,16 @@ public:
         const QPointF &center,
         const QString &register_comment,
         bool active,
-        bool faulted)
+        bool faulted,
+        bool condition)
         : node_id_(node.id),
           rung_id_(rung_id),
           config_(node.config),
           register_comment_(register_comment),
           configured_(node.configured),
           active_(active),
-          faulted_(faulted)
+          faulted_(faulted),
+          condition_(condition)
     {
         setPos(center);
         setFlag(ItemIsSelectable, true);
@@ -518,6 +524,7 @@ public:
 
     const std::string &nodeId() const { return node_id_; }
     const std::string &rungId() const { return rung_id_; }
+    bool isConditionNode() const { return condition_; }
 
 private:
     std::string node_id_;
@@ -527,6 +534,110 @@ private:
     bool configured_ = true;
     bool active_ = false;
     bool faulted_ = false;
+    bool condition_ = true;
+};
+
+class LogicEditorWidget::WireItem final : public QGraphicsItem
+{
+public:
+    WireItem(
+        const std::string &expression_id,
+        const std::string &rung_id,
+        const QPointF &center,
+        int column_span,
+        bool active)
+        : expression_id_(expression_id),
+          rung_id_(rung_id),
+          width_(static_cast<qreal>(column_span) * kCellWidth),
+          active_(active)
+    {
+        setPos(center);
+        setFlag(ItemIsSelectable, true);
+        setZValue(2.0);
+        setToolTip(LogicEditorWidget::tr("横线：%1 列，可用触点直接替换")
+                       .arg(column_span));
+    }
+
+    QRectF boundingRect() const override
+    {
+        return {-width_ / 2.0, -kCellHeight / 2.0, width_, kCellHeight};
+    }
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *) override
+    {
+        const bool selected = (option->state & QStyle::State_Selected) != 0;
+        if (selected)
+        {
+            painter->fillRect(boundingRect().adjusted(2, 2, -2, -2), kSelectionColor);
+            painter->setPen(QPen(kSelectionBorderColor, 1.4, Qt::DashLine));
+            painter->drawRect(boundingRect().adjusted(3, 3, -3, -3));
+        }
+        painter->setPen(ladderPen(active_));
+        painter->drawLine(QPointF(-width_ / 2.0, 0), QPointF(width_ / 2.0, 0));
+    }
+
+    const std::string &expressionId() const { return expression_id_; }
+    const std::string &rungId() const { return rung_id_; }
+
+private:
+    std::string expression_id_;
+    std::string rung_id_;
+    qreal width_ = kCellWidth;
+    bool active_ = false;
+};
+
+class LogicEditorWidget::VerticalConnectorItem final : public QGraphicsItem
+{
+public:
+    VerticalConnectorItem(
+        const std::string &branch_expression_id,
+        const std::string &rung_id,
+        qreal x,
+        qreal top,
+        qreal bottom,
+        bool active)
+        : branch_expression_id_(branch_expression_id),
+          rung_id_(rung_id),
+          height_(bottom - top),
+          active_(active)
+    {
+        setPos(x, top);
+        setFlag(ItemIsSelectable, true);
+        setZValue(2.5);
+        setToolTip(LogicEditorWidget::tr("竖线连接：删除将移除对应并联支路"));
+    }
+
+    QRectF boundingRect() const override
+    {
+        return {-8.0, 0.0, 16.0, height_};
+    }
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *) override
+    {
+        const bool selected = (option->state & QStyle::State_Selected) != 0;
+        painter->setPen(QPen(
+            selected ? kSelectionBorderColor
+                     : active_ ? kActiveColor : kLadderColor,
+            selected || active_ ? 3.0 : kLadderLineWidth));
+        painter->drawLine(QPointF(0, 0), QPointF(0, height_));
+        if (selected)
+        {
+            painter->setPen(QPen(kSelectionBorderColor, 1.0, Qt::DashLine));
+            painter->drawRect(boundingRect().adjusted(1, 1, -1, -1));
+        }
+    }
+
+    const std::string &branchExpressionId() const
+    {
+        return branch_expression_id_;
+    }
+    const std::string &rungId() const { return rung_id_; }
+
+private:
+    std::string branch_expression_id_;
+    std::string rung_id_;
+    qreal height_ = 0.0;
+    bool active_ = false;
 };
 
 class LogicEditorWidget::RungItem final : public QGraphicsItem
@@ -627,15 +738,31 @@ RenderResult renderExpression(
     bool trace_enabled,
     const std::string &fault_node_id)
 {
-    const bool active = trace_enabled && traceValue(
-        trace, &LogicTraceSnapshot::expressionValues, expression.id);
+    if (expression.kind == ConditionExpressionKind::Wire)
+    {
+        const bool active = trace_enabled && traceValue(
+            trace, &LogicTraceSnapshot::expressionPowerValues, expression.id);
+        const qreal width = static_cast<qreal>(expression.wire->columnSpan) * kCellWidth;
+        const QPointF center(
+            top_left.x() + width / 2.0,
+            top_left.y() + kCellHeight / 2.0);
+        scene.addItem(new LogicEditorWidget::WireItem(
+            expression.id,
+            rung_id,
+            center,
+            expression.wire->columnSpan,
+            active));
+        return {
+            QPointF(top_left.x(), center.y()),
+            QPointF(top_left.x() + width, center.y())};
+    }
     if (expression.kind == ConditionExpressionKind::Node)
     {
         const QPointF center(
             top_left.x() + kCellWidth / 2.0,
             top_left.y() + kCellHeight / 2.0);
         const bool node_active = trace_enabled && traceValue(
-            trace, &LogicTraceSnapshot::nodeValues, expression.node->id);
+            trace, &LogicTraceSnapshot::nodePowerValues, expression.node->id);
         scene.addLine(
             QLineF(
                 QPointF(top_left.x(), center.y()),
@@ -655,7 +782,8 @@ RenderResult renderExpression(
                     : QString{};
             }(),
             node_active,
-            expression.node->id == fault_node_id));
+            expression.node->id == fault_node_id,
+            true));
         return {
             QPointF(top_left.x(), center.y()),
             QPointF(top_left.x() + kCellWidth, center.y())};
@@ -685,7 +813,13 @@ RenderResult renderExpression(
             }
             else
             {
-                scene.addLine(QLineF(previous.output, current.input), ladderPen(active));
+                const bool previous_active = trace_enabled && traceValue(
+                    trace,
+                    &LogicTraceSnapshot::expressionPowerValues,
+                    expression.children[index - 1U].id);
+                scene.addLine(
+                    QLineF(previous.output, current.input),
+                    ladderPen(previous_active));
             }
             previous = current;
             x += static_cast<qreal>(child_metrics.columns) * kCellWidth;
@@ -715,14 +849,36 @@ RenderResult renderExpression(
     const qreal left_join = top_left.x();
     const qreal right_join = top_left.x() + static_cast<qreal>(metrics.columns) * kCellWidth;
     const qreal top_y = branches.front().input.y();
-    const qreal bottom_y = branches.back().input.y();
-    scene.addLine(QLineF(left_join, top_y, left_join, bottom_y), ladderPen(active));
-    scene.addLine(QLineF(right_join, top_y, right_join, bottom_y), ladderPen(active));
+    const bool parallel_input_active = trace_enabled && traceValue(
+        trace, &LogicTraceSnapshot::expressionInputValues, expression.id);
+    for (std::size_t index = 1; index < branches.size(); ++index)
+    {
+        const qreal segment_top = branches[index - 1U].input.y();
+        const qreal segment_bottom = branches[index].input.y();
+        const bool branch_active = trace_enabled && traceValue(
+            trace,
+            &LogicTraceSnapshot::expressionPowerValues,
+            expression.children[index].id);
+        scene.addItem(new LogicEditorWidget::VerticalConnectorItem(
+            expression.children[index].id,
+            rung_id,
+            left_join,
+            segment_top,
+            segment_bottom,
+            parallel_input_active));
+        scene.addItem(new LogicEditorWidget::VerticalConnectorItem(
+            expression.children[index].id,
+            rung_id,
+            right_join,
+            segment_top,
+            segment_bottom,
+            branch_active));
+    }
     for (std::size_t index = 0; index < branches.size(); ++index)
     {
         const bool branch_active = trace_enabled && traceValue(
             trace,
-            &LogicTraceSnapshot::expressionValues,
+            &LogicTraceSnapshot::expressionPowerValues,
             expression.children[index].id);
         scene.addLine(
             QLineF(QPointF(left_join, branches[index].input.y()), branches[index].input),
@@ -898,7 +1054,8 @@ void LogicEditorWidget::reloadLogic()
                               rung.output->id)
                         : rung_active;
                 }(),
-                rung.output->id == fault_node_id_));
+                rung.output->id == fault_node_id_,
+                false));
         }
         else
         {
@@ -938,6 +1095,38 @@ void LogicEditorWidget::selectNode(const std::string &node_id)
     }
 }
 
+void LogicEditorWidget::selectExpression(const std::string &expression_id)
+{
+    for (QGraphicsItem *item : scene_->items())
+    {
+        bool selected = false;
+        if (NodeItem *node = dynamic_cast<NodeItem *>(item))
+        {
+            selected = node->isConditionNode() && node->nodeId() == expression_id;
+            if (selected)
+            {
+                current_rung_id_ = node->rungId();
+                ensureVisible(node);
+            }
+        }
+        else if (WireItem *wire = dynamic_cast<WireItem *>(item))
+        {
+            selected = wire->expressionId() == expression_id;
+            if (selected)
+            {
+                current_rung_id_ = wire->rungId();
+                ensureVisible(wire);
+            }
+        }
+        item->setSelected(selected);
+    }
+}
+
+void LogicEditorWidget::selectWire(const std::string &wire_id)
+{
+    selectExpression(wire_id);
+}
+
 std::string LogicEditorWidget::selectedNodeId() const
 {
     const std::vector<std::string> ids = selectedNodeIds();
@@ -973,6 +1162,73 @@ std::vector<std::string> LogicEditorWidget::selectedNodeIds() const
     return ids;
 }
 
+std::vector<std::string> LogicEditorWidget::selectedExpressionIds() const
+{
+    std::vector<std::pair<QPointF, std::string>> positioned_ids;
+    for (QGraphicsItem *item : scene_->selectedItems())
+    {
+        if (const NodeItem *node = dynamic_cast<const NodeItem *>(item))
+        {
+            if (node->isConditionNode())
+            {
+                positioned_ids.emplace_back(node->scenePos(), node->nodeId());
+            }
+        }
+        else if (const WireItem *wire = dynamic_cast<const WireItem *>(item))
+        {
+            positioned_ids.emplace_back(wire->scenePos(), wire->expressionId());
+        }
+    }
+    std::sort(
+        positioned_ids.begin(), positioned_ids.end(),
+        [](const auto &left, const auto &right)
+        {
+            if (!qFuzzyCompare(left.first.y(), right.first.y()))
+            {
+                return left.first.y() < right.first.y();
+            }
+            return left.first.x() < right.first.x();
+        });
+    std::vector<std::string> ids;
+    ids.reserve(positioned_ids.size());
+    for (const auto &positioned_id : positioned_ids)
+    {
+        ids.push_back(positioned_id.second);
+    }
+    return ids;
+}
+
+std::vector<std::string> LogicEditorWidget::selectedWireIds() const
+{
+    std::vector<std::string> ids;
+    for (QGraphicsItem *item : scene_->selectedItems())
+    {
+        if (const WireItem *wire = dynamic_cast<const WireItem *>(item))
+        {
+            ids.push_back(wire->expressionId());
+        }
+    }
+    return ids;
+}
+
+std::vector<std::string> LogicEditorWidget::selectedBranchIds() const
+{
+    std::vector<std::string> ids;
+    for (QGraphicsItem *item : scene_->selectedItems())
+    {
+        if (const VerticalConnectorItem *connector =
+                dynamic_cast<const VerticalConnectorItem *>(item))
+        {
+            if (std::find(ids.cbegin(), ids.cend(), connector->branchExpressionId())
+                == ids.cend())
+            {
+                ids.push_back(connector->branchExpressionId());
+            }
+        }
+    }
+    return ids;
+}
+
 std::string LogicEditorWidget::selectedRungId() const
 {
     std::string rung_id;
@@ -986,6 +1242,23 @@ std::string LogicEditorWidget::selectedRungId() const
             }
             rung_id = node->rungId();
         }
+        else if (const WireItem *wire = dynamic_cast<const WireItem *>(item))
+        {
+            if (!rung_id.empty() && rung_id != wire->rungId())
+            {
+                return {};
+            }
+            rung_id = wire->rungId();
+        }
+        else if (const VerticalConnectorItem *connector =
+                     dynamic_cast<const VerticalConnectorItem *>(item))
+        {
+            if (!rung_id.empty() && rung_id != connector->rungId())
+            {
+                return {};
+            }
+            rung_id = connector->rungId();
+        }
         else if (const RungItem *rung = dynamic_cast<const RungItem *>(item))
         {
             if (rung_id.empty())
@@ -1015,12 +1288,19 @@ LogicEditorResult LogicEditorWidget::addRung()
 
 LogicEditorResult LogicEditorWidget::addCondition(const LogicNodeConfig &config)
 {
+    const std::vector<std::string> selected_expressions = selectedExpressionIds();
+    const std::vector<std::string> selected_wires = selectedWireIds();
     const std::vector<std::string> selected_ids = selectedNodeIds();
     LogicEditorResult result;
-    if (selected_ids.size() > 1U)
+    if (selected_expressions.size() > 1U || selected_wires.size() > 1U)
     {
         result = {false, LogicEditorError::InvalidOperation,
-                  "串联插入时只能选择一个节点", {}};
+                  "串联插入或替换横线时只能选择一个条件对象", {}};
+    }
+    else if (selected_wires.size() == 1U)
+    {
+        result = editor_service_.replaceWireWithCondition(
+            logic_id_, currentRungId(), selected_wires.front(), config);
     }
     else if (selected_ids.size() == 1U)
     {
@@ -1038,7 +1318,7 @@ LogicEditorResult LogicEditorWidget::addCondition(const LogicNodeConfig &config)
     if (result.succeeded)
     {
         reloadLogic();
-        selectNode(result.id);
+        selectExpression(result.id);
         emit graphChanged();
     }
     else
@@ -1075,7 +1355,133 @@ LogicEditorResult LogicEditorWidget::addParallelBranch(const LogicNodeConfig &co
     if (result.succeeded)
     {
         reloadLogic();
-        selectNode(result.id);
+        selectExpression(result.id);
+        emit graphChanged();
+    }
+    else
+    {
+        reportFailure(result);
+    }
+    return result;
+}
+
+LogicEditorResult LogicEditorWidget::addHorizontalWire()
+{
+    const std::vector<std::string> selected_ids = selectedExpressionIds();
+    LogicEditorResult result;
+    if (selected_ids.size() > 1U)
+    {
+        result = {false, LogicEditorError::InvalidOperation,
+                  "插入横线时只能选择一个条件对象", {}};
+    }
+    else if (selected_ids.size() == 1U)
+    {
+        result = editor_service_.insertWireAfter(
+            logic_id_, currentRungId(), selected_ids.front());
+    }
+    else
+    {
+        result = editor_service_.appendWire(logic_id_, currentRungId());
+    }
+    if (result.succeeded)
+    {
+        reloadLogic();
+        selectWire(result.id);
+        emit graphChanged();
+    }
+    else
+    {
+        reportFailure(result);
+    }
+    return result;
+}
+
+LogicEditorResult LogicEditorWidget::addVerticalWire()
+{
+    const std::string rung_id = selectedRungId();
+    const std::vector<std::string> selected_ids = selectedExpressionIds();
+    LogicEditorResult result;
+    if (rung_id.empty() || selected_ids.empty())
+    {
+        result = {false, LogicEditorError::InvalidOperation,
+                  "请在同一网络中选择要连接的连续条件或横线", {}};
+    }
+    else
+    {
+        result = editor_service_.addParallelWireBranch(
+            logic_id_, rung_id, selected_ids);
+    }
+    if (result.succeeded)
+    {
+        reloadLogic();
+        selectWire(result.id);
+        emit graphChanged();
+    }
+    else
+    {
+        reportFailure(result);
+    }
+    return result;
+}
+
+LogicEditorResult LogicEditorWidget::deleteHorizontalWire()
+{
+    const std::vector<std::string> wire_ids = selectedWireIds();
+    const std::string rung_id = selectedRungId();
+    if (wire_ids.empty() || rung_id.empty())
+    {
+        const LogicEditorResult result = {
+            false,
+            LogicEditorError::InvalidOperation,
+            "请先选择要删除的横线",
+            {}};
+        reportFailure(result);
+        return result;
+    }
+    const LogicEditorResult result = editor_service_.removeExpressions(
+        logic_id_, rung_id, wire_ids);
+    if (result.succeeded)
+    {
+        reloadLogic();
+        emit nodeSelected({});
+        emit graphChanged();
+    }
+    else
+    {
+        reportFailure(result);
+    }
+    return result;
+}
+
+LogicEditorResult LogicEditorWidget::deleteVerticalWire()
+{
+    const std::vector<std::string> branch_ids = selectedBranchIds();
+    if (branch_ids.empty())
+    {
+        const LogicEditorResult result = {
+            false,
+            LogicEditorError::InvalidOperation,
+            "请先选择要删除的竖线连接",
+            {}};
+        reportFailure(result);
+        return result;
+    }
+    const std::string rung_id = selectedRungId();
+    LogicEditorResult result;
+    if (rung_id.empty())
+    {
+        result = {false, LogicEditorError::InvalidOperation,
+                  "竖线连接必须位于同一网络", {}};
+    }
+    else
+    {
+        result = editor_service_.removeExpressions(
+            logic_id_, rung_id, branch_ids);
+    }
+    if (result.succeeded)
+    {
+        reloadLogic();
+        emit nodeSelected({});
         emit graphChanged();
     }
     else
@@ -1105,9 +1511,38 @@ LogicEditorResult LogicEditorWidget::setOutput(
 
 LogicEditorResult LogicEditorWidget::deleteSelected()
 {
+    const std::vector<std::string> expression_ids = selectedExpressionIds();
+    const std::vector<std::string> wire_ids = selectedWireIds();
+    const std::vector<std::string> branch_ids = selectedBranchIds();
     const std::vector<std::string> node_ids = selectedNodeIds();
     LogicEditorResult result;
-    if (!node_ids.empty())
+    if (!branch_ids.empty())
+    {
+        result = editor_service_.removeExpressions(
+            logic_id_, selectedRungId(), branch_ids);
+    }
+    else if (!wire_ids.empty())
+    {
+        bool output_selected = false;
+        for (QGraphicsItem *item : scene_->selectedItems())
+        {
+            if (const NodeItem *node = dynamic_cast<const NodeItem *>(item))
+            {
+                output_selected = output_selected || !node->isConditionNode();
+            }
+        }
+        if (output_selected)
+        {
+            result = {false, LogicEditorError::InvalidOperation,
+                      "不能同时删除横线和输出节点", {}};
+        }
+        else
+        {
+            result = editor_service_.removeExpressions(
+                logic_id_, selectedRungId(), expression_ids);
+        }
+    }
+    else if (!node_ids.empty())
     {
         result = editor_service_.removeNodes(logic_id_, node_ids);
     }
diff --git a/app/src/ui/logic_editor_widget.h b/app/src/ui/logic_editor_widget.h
index 1ea7505..60774cb 100644
--- a/app/src/ui/logic_editor_widget.h
+++ b/app/src/ui/logic_editor_widget.h
@@ -18,6 +18,8 @@ class LogicEditorWidget final : public QGraphicsView
 
 public:
     class NodeItem;
+    class WireItem;
+    class VerticalConnectorItem;
     class RungItem;
 
     explicit LogicEditorWidget(
@@ -39,6 +41,10 @@ public:
     LogicEditorResult addRung();
     LogicEditorResult addCondition(const LogicNodeConfig &config);
     LogicEditorResult addParallelBranch(const LogicNodeConfig &config);
+    LogicEditorResult addHorizontalWire();
+    LogicEditorResult addVerticalWire();
+    LogicEditorResult deleteHorizontalWire();
+    LogicEditorResult deleteVerticalWire();
     LogicEditorResult setOutput(
         const LogicNodeConfig &config, bool configured = false);
     LogicEditorResult deleteSelected();
@@ -55,6 +61,11 @@ private:
     void handleSelectionChanged();
     void reportFailure(const LogicEditorResult &result);
     std::string currentRungId() const;
+    void selectExpression(const std::string &expression_id);
+    void selectWire(const std::string &wire_id);
+    std::vector<std::string> selectedExpressionIds() const;
+    std::vector<std::string> selectedWireIds() const;
+    std::vector<std::string> selectedBranchIds() const;
 
     LogicEditorService &editor_service_;
     QGraphicsScene *scene_ = nullptr;
diff --git a/app/src/ui/main_window.cpp b/app/src/ui/main_window.cpp
index 4a668b7..30590c8 100644
--- a/app/src/ui/main_window.cpp
+++ b/app/src/ui/main_window.cpp
@@ -395,6 +395,14 @@ void MainWindow::configureActions()
 
     connect(ui_->addRungAction, &QAction::triggered,
             this, &MainWindow::addLogicRung);
+    connect(ui_->insertHorizontalWireAction, &QAction::triggered,
+            this, &MainWindow::addLogicHorizontalWire);
+    connect(ui_->insertVerticalWireAction, &QAction::triggered,
+            this, &MainWindow::addLogicVerticalWire);
+    connect(ui_->deleteHorizontalWireAction, &QAction::triggered,
+            this, &MainWindow::deleteLogicHorizontalWire);
+    connect(ui_->deleteVerticalWireAction, &QAction::triggered,
+            this, &MainWindow::deleteLogicVerticalWire);
     connect(ui_->parallelInsertAction, &QAction::triggered,
             this,
             [this]
@@ -727,6 +735,10 @@ void MainWindow::configureAppearance()
     ui_->deleteControlAction->setIcon(makeUiIcon(UiIcon::Delete));
     ui_->addRungAction->setIcon(makeUiIcon(UiIcon::AddRung));
     ui_->parallelInsertAction->setIcon(makeUiIcon(UiIcon::ParallelBranch));
+    ui_->insertHorizontalWireAction->setIcon(makeUiIcon(UiIcon::HorizontalWire));
+    ui_->insertVerticalWireAction->setIcon(makeUiIcon(UiIcon::VerticalWire));
+    ui_->deleteHorizontalWireAction->setIcon(makeUiIcon(UiIcon::Delete));
+    ui_->deleteVerticalWireAction->setIcon(makeUiIcon(UiIcon::Delete));
     ui_->addNormallyOpenAction->setIcon(makeUiIcon(UiIcon::NormallyOpenContact));
     ui_->addNormallyClosedAction->setIcon(makeUiIcon(UiIcon::NormallyClosedContact));
     ui_->addRisingEdgeAction->setIcon(makeUiIcon(UiIcon::RisingEdgeContact));
@@ -1030,6 +1042,10 @@ void MainWindow::updateEditActions()
                      || (logic_active && logic_editor_service_.canRedo())));
     ui_->deleteSelectionAction->setEnabled(editable && (hmi_active || logic_active));
     ui_->clearSelectionAction->setEnabled(editable && (hmi_active || logic_active));
+    ui_->insertHorizontalWireAction->setEnabled(editable && logic_active);
+    ui_->insertVerticalWireAction->setEnabled(editable && logic_active);
+    ui_->deleteHorizontalWireAction->setEnabled(editable && logic_active);
+    ui_->deleteVerticalWireAction->setEnabled(editable && logic_active);
 }
 
 void MainWindow::clearEditorHistories()
@@ -1194,6 +1210,62 @@ void MainWindow::addLogicParallelBranch(const LogicNodeConfig &config)
     statusBar()->showMessage(tr("已建立并联支路，请配置新触点"), 3000);
 }
 
+void MainWindow::addLogicHorizontalWire()
+{
+    const LogicEditorResult result = logic_editor_widget_->addHorizontalWire();
+    if (!result.succeeded)
+    {
+        showProjectResult(tr("插入横线"), fromUtf8(result.message), false);
+        return;
+    }
+    selected_logic_node_id_.clear();
+    showLogicNodeProperties({});
+    refreshProjectUi();
+    statusBar()->showMessage(tr("横线已插入，可直接用触点替换"), 3000);
+}
+
+void MainWindow::addLogicVerticalWire()
+{
+    const LogicEditorResult result = logic_editor_widget_->addVerticalWire();
+    if (!result.succeeded)
+    {
+        showProjectResult(tr("插入竖线"), fromUtf8(result.message), false);
+        return;
+    }
+    selected_logic_node_id_.clear();
+    showLogicNodeProperties({});
+    refreshProjectUi();
+    statusBar()->showMessage(tr("已建立横线旁路和竖线连接"), 3000);
+}
+
+void MainWindow::deleteLogicHorizontalWire()
+{
+    const LogicEditorResult result = logic_editor_widget_->deleteHorizontalWire();
+    if (!result.succeeded)
+    {
+        showProjectResult(tr("删除横线"), fromUtf8(result.message), false);
+        return;
+    }
+    selected_logic_node_id_.clear();
+    showLogicNodeProperties({});
+    refreshProjectUi();
+    statusBar()->showMessage(tr("横线已删除"), 3000);
+}
+
+void MainWindow::deleteLogicVerticalWire()
+{
+    const LogicEditorResult result = logic_editor_widget_->deleteVerticalWire();
+    if (!result.succeeded)
+    {
+        showProjectResult(tr("删除竖线"), fromUtf8(result.message), false);
+        return;
+    }
+    selected_logic_node_id_.clear();
+    showLogicNodeProperties({});
+    refreshProjectUi();
+    statusBar()->showMessage(tr("竖线及对应并联支路已删除"), 3000);
+}
+
 void MainWindow::setLogicOutput(const LogicNodeConfig &config)
 {
     const LogicEditorResult result = logic_editor_widget_->setOutput(config);
diff --git a/app/src/ui/main_window.h b/app/src/ui/main_window.h
index 0a457e9..a44c608 100644
--- a/app/src/ui/main_window.h
+++ b/app/src/ui/main_window.h
@@ -136,6 +136,10 @@ private:
     void addLogicCondition(const LogicNodeConfig &config);
     // 为当前选中的连续逻辑范围建立并联支路
     void addLogicParallelBranch(const LogicNodeConfig &config);
+    void addLogicHorizontalWire();
+    void addLogicVerticalWire();
+    void deleteLogicHorizontalWire();
+    void deleteLogicVerticalWire();
     // 设置当前网络右侧的输出线圈
     void setLogicOutput(const LogicNodeConfig &config);
     void configureAndSetLogicOutput(const LogicNodeConfig &config);
diff --git a/app/src/ui/main_window.ui b/app/src/ui/main_window.ui
index 2e5f7f3..4e92146 100644
--- a/app/src/ui/main_window.ui
+++ b/app/src/ui/main_window.ui
@@ -250,6 +250,8 @@
     <addaction name="redoAction"/>
     <addaction name="separator"/>
     <addaction name="deleteSelectionAction"/>
+    <addaction name="deleteHorizontalWireAction"/>
+    <addaction name="deleteVerticalWireAction"/>
     <addaction name="clearSelectionAction"/>
    </widget>
    <widget class="QMenu" name="runMenu">
@@ -331,6 +333,8 @@
     <bool>false</bool>
    </attribute>
    <addaction name="addRungAction"/>
+   <addaction name="insertHorizontalWireAction"/>
+   <addaction name="insertVerticalWireAction"/>
    <addaction name="parallelInsertAction"/>
    <addaction name="deleteLogicAction"/>
    <addaction name="separator"/>
@@ -1059,6 +1063,50 @@
     <string>在梯形图末尾新增网络</string>
    </property>
   </action>
+  <action name="insertHorizontalWireAction">
+   <property name="text">
+    <string>横线</string>
+   </property>
+   <property name="toolTip">
+    <string>在所选条件或横线后插入横线；没有选择时追加到当前网络</string>
+   </property>
+   <property name="shortcut">
+    <string>F11</string>
+   </property>
+  </action>
+  <action name="insertVerticalWireAction">
+   <property name="text">
+    <string>竖线</string>
+   </property>
+   <property name="toolTip">
+    <string>为所选连续逻辑范围建立横线旁路和竖线连接</string>
+   </property>
+   <property name="shortcut">
+    <string>F12</string>
+   </property>
+  </action>
+  <action name="deleteHorizontalWireAction">
+   <property name="text">
+    <string>删除横线</string>
+   </property>
+   <property name="toolTip">
+    <string>删除画布中选中的横线</string>
+   </property>
+   <property name="shortcut">
+    <string>Shift+F11</string>
+   </property>
+  </action>
+  <action name="deleteVerticalWireAction">
+   <property name="text">
+    <string>删除竖线</string>
+   </property>
+   <property name="toolTip">
+    <string>删除画布中选中的竖线及其对应并联支路</string>
+   </property>
+   <property name="shortcut">
+    <string>Shift+F12</string>
+   </property>
+  </action>
   <action name="parallelInsertAction">
    <property name="text">
     <string>并联支路</string>
diff --git a/app/src/ui/toolbar_icon_factory.cpp b/app/src/ui/toolbar_icon_factory.cpp
index 7fb3b06..c19f81e 100644
--- a/app/src/ui/toolbar_icon_factory.cpp
+++ b/app/src/ui/toolbar_icon_factory.cpp
@@ -359,6 +359,24 @@ QPixmap renderIcon(UiIcon icon, int size)
         painter.drawLine(QPointF(7, 12), QPointF(17, 12));
         break;
     }
+    case UiIcon::HorizontalWire:
+    {
+        painter.drawLine(QPointF(3, 12), QPointF(21, 12));
+        painter.setPen(iconPen(kAccent, 2.0));
+        painter.drawLine(QPointF(9, 7), QPointF(15, 7));
+        painter.drawLine(QPointF(12, 4), QPointF(12, 10));
+        break;
+    }
+    case UiIcon::VerticalWire:
+    {
+        painter.drawLine(QPointF(5, 7), QPointF(19, 7));
+        painter.drawLine(QPointF(5, 17), QPointF(19, 17));
+        painter.drawLine(QPointF(12, 7), QPointF(12, 17));
+        painter.setPen(iconPen(kAccent, 2.0));
+        painter.drawLine(QPointF(17, 9), QPointF(17, 15));
+        painter.drawLine(QPointF(14, 12), QPointF(20, 12));
+        break;
+    }
     case UiIcon::ParallelBranch:
     {
         painter.drawLine(QPointF(2, 12), QPointF(6, 12));
diff --git a/app/src/ui/toolbar_icon_factory.h b/app/src/ui/toolbar_icon_factory.h
index 04f8fe6..1c1d2b5 100644
--- a/app/src/ui/toolbar_icon_factory.h
+++ b/app/src/ui/toolbar_icon_factory.h
@@ -28,6 +28,8 @@ enum class UiIcon
     AlarmSettings,
     Delete,
     AddRung,
+    HorizontalWire,
+    VerticalWire,
     ParallelBranch,
     NormallyOpenContact,
     NormallyClosedContact,
diff --git a/app/tests/domain_tests.cpp b/app/tests/domain_tests.cpp
index c3f410d..a6f5fca 100644
--- a/app/tests/domain_tests.cpp
+++ b/app/tests/domain_tests.cpp
@@ -603,6 +603,26 @@ void testLadderLogicBoundaries()
     logic.rungs.push_back(rung);
     require(logic.validate(), "stop AND (start OR run) self-hold ladder must be valid");
 
+    ConditionExpression wire = ConditionExpression::fromWire("wire-1", 2);
+    require(wire.validate() && wire.validateForRunning()
+                && wire.wire->columnSpan == 2,
+            "a configured horizontal wire must be a valid runnable expression leaf");
+    ConditionExpression invalid_wire = ConditionExpression::fromWire("wire-invalid", 0);
+    require(!invalid_wire.validate(), "a zero-column horizontal wire must be rejected");
+    invalid_wire = ConditionExpression::fromWire(
+        "wire-too-wide", WireSegment::kMaximumColumnSpan + 1);
+    require(!invalid_wire.validate(), "an oversized horizontal wire must be rejected");
+
+    ConditionExpression wired_series;
+    wired_series.id = "wired-series";
+    wired_series.kind = ConditionExpressionKind::Series;
+    wired_series.children = {
+        ConditionExpression::fromNode(stop),
+        ConditionExpression::fromWire("wire-series"),
+        start_parallel};
+    require(wired_series.validateForRunning(),
+            "a wire must preserve a valid structured series expression");
+
     logic.rungs.front().condition->children.front() =
         ConditionExpression::fromNode(coil);
     require(!logic.validate(), "a ladder condition expression must reject coils");
diff --git a/app/tests/logic_editor_service_tests.cpp b/app/tests/logic_editor_service_tests.cpp
index a11823b..a2d71b8 100644
--- a/app/tests/logic_editor_service_tests.cpp
+++ b/app/tests/logic_editor_service_tests.cpp
@@ -132,6 +132,66 @@ void testRangeParallelInsertion()
             "a non-contiguous selection must be rejected");
 }
 
+void testStructuredWireEditing()
+{
+    TestProjectStorage storage;
+    ProjectService project_service(storage);
+    LogicEditorService service(project_service);
+    const std::string logic_id = service.ensureDefaultLogic().id;
+    const std::string rung_id = service.firstRungId(logic_id);
+    service.appendCondition(logic_id, rung_id, contact(0));
+    service.appendCondition(logic_id, rung_id, contact(1));
+    service.appendCondition(logic_id, rung_id, contact(2));
+
+    const LogicEditorResult branch = service.addParallelWireBranch(
+        logic_id, rung_id, {"contact-2", "contact-3"});
+    require(branch.succeeded && branch.id == "wire-1",
+            "a continuous range must accept a structured horizontal bypass");
+    const LadderRung *rung = service.findRung(logic_id, rung_id);
+    require(rung->condition->kind == ConditionExpressionKind::Series
+                && rung->condition->children.at(1).kind
+                    == ConditionExpressionKind::Parallel,
+            "a vertical connection must produce a parallel expression");
+    const ConditionExpression &wire =
+        rung->condition->children.at(1).children.at(1);
+    require(wire.kind == ConditionExpressionKind::Wire
+                && wire.wire->columnSpan == 2,
+            "the bypass wire span must match the selected two-column range");
+
+    const LogicEditorResult replacement = service.replaceWireWithCondition(
+        logic_id, rung_id, branch.id, contact(3));
+    require(replacement.succeeded && replacement.id == "contact-4",
+            "a selected wire must be replaceable by a configured node type");
+    const LogicEditorResult extension = service.insertWireAfter(
+        logic_id, rung_id, replacement.id);
+    require(extension.succeeded && extension.id == "wire-1",
+            "a wire id must become reusable after its expression is replaced");
+
+    rung = service.findRung(logic_id, rung_id);
+    const ConditionExpression *extended_branch = service.findExpression(
+        logic_id, rung_id, rung->condition->children.at(1).children.at(1).id);
+    require(extended_branch != nullptr
+                && extended_branch->kind == ConditionExpressionKind::Series
+                && extended_branch->children.at(1).kind
+                    == ConditionExpressionKind::Wire,
+            "inserting a horizontal wire after a branch node must preserve structure");
+    const std::string extended_branch_id = extended_branch->id;
+    require(!service.addParallelWireBranch(
+                 logic_id, rung_id, {"contact-1", "contact-3"}).succeeded,
+            "non-contiguous wire connection targets must be rejected");
+
+    require(service.removeExpressions(
+                logic_id, rung_id, {extended_branch_id}).succeeded,
+            "deleting a selected vertical connection branch must succeed atomically");
+    rung = service.findRung(logic_id, rung_id);
+    require(rung->condition->kind == ConditionExpressionKind::Series
+                && rung->condition->children.size() == 3U,
+            "removing a bypass branch must normalize back to the original series");
+    require(service.undo().succeeded
+                && service.findExpression(logic_id, rung_id, extended_branch_id) != nullptr,
+            "wire branch deletion must participate in ladder undo history");
+}
+
 void testLogicLifecycleAndOrdering()
 {
     TestProjectStorage storage;
@@ -305,6 +365,7 @@ int main()
     {
         testStructuredEditingAndNormalization();
         testRangeParallelInsertion();
+        testStructuredWireEditing();
         testLogicLifecycleAndOrdering();
         testEdgeTimerNodesAndRungComments();
         testHistoryAndAtomicBatchDelete();
diff --git a/app/tests/main_window_tests.cpp b/app/tests/main_window_tests.cpp
index 23c3014..6ef6201 100644
--- a/app/tests/main_window_tests.cpp
+++ b/app/tests/main_window_tests.cpp
@@ -670,6 +670,14 @@ void testModeActionsControlEditingAvailability()
         window, "addNormalCoilAction");
     QAction *parallel_insert_action = requiredChild<QAction>(
         window, "parallelInsertAction");
+    QAction *insert_horizontal_wire_action = requiredChild<QAction>(
+        window, "insertHorizontalWireAction");
+    QAction *insert_vertical_wire_action = requiredChild<QAction>(
+        window, "insertVerticalWireAction");
+    QAction *delete_horizontal_wire_action = requiredChild<QAction>(
+        window, "deleteHorizontalWireAction");
+    QAction *delete_vertical_wire_action = requiredChild<QAction>(
+        window, "deleteVerticalWireAction");
     QDockWidget *project_dock = requiredChild<QDockWidget>(window, "projectDock");
     QDockWidget *properties_dock = requiredChild<QDockWidget>(window, "propertiesDock");
     QLabel *selection = requiredChild<QLabel>(window, "selectionValueLabel");
@@ -725,6 +733,10 @@ void testModeActionsControlEditingAvailability()
              "configureAlarmsAction",
              "deleteControlAction",
              "addRungAction",
+             "insertHorizontalWireAction",
+             "insertVerticalWireAction",
+             "deleteHorizontalWireAction",
+             "deleteVerticalWireAction",
              "parallelInsertAction",
              "addNormallyOpenAction",
              "addNormallyClosedAction",
@@ -799,7 +811,15 @@ void testModeActionsControlEditingAvailability()
     require(editing_action->isChecked(), "editing action must be selected initially");
     require(undo_action->shortcut() == QKeySequence(Qt::CTRL | Qt::Key_Z)
                 && redo_action->shortcut() == QKeySequence(Qt::CTRL | Qt::Key_Y)
-                && delete_selection_action->shortcut() == QKeySequence(Qt::Key_Delete),
+                && delete_selection_action->shortcut() == QKeySequence(Qt::Key_Delete)
+                && insert_horizontal_wire_action->shortcut()
+                    == QKeySequence(Qt::Key_F11)
+                && insert_vertical_wire_action->shortcut()
+                    == QKeySequence(Qt::Key_F12)
+                && delete_horizontal_wire_action->shortcut()
+                    == QKeySequence(Qt::SHIFT | Qt::Key_F11)
+                && delete_vertical_wire_action->shortcut()
+                    == QKeySequence(Qt::SHIFT | Qt::Key_F12),
             "core editor actions must expose the agreed keyboard shortcuts");
     require(project_dock->isEnabled(), "project dock must be enabled while editing");
     require(properties_dock->isEnabled(), "properties dock must be enabled while editing");
@@ -941,7 +961,54 @@ void testModeActionsControlEditingAvailability()
     collectConditionNodes(*restored_rung.condition, &restored_nodes);
     require(restored_nodes.size() == 1U,
             "logic redo must restore the original condition node");
-    logic_editor->selectNode(restored_nodes.front()->id);
+    const std::string restored_node_id = restored_nodes.front()->id;
+    logic_editor->selectNode(restored_node_id);
+
+    insert_horizontal_wire_action->trigger();
+    const LadderRung &wired_rung = logic_editor_service.findLogic(
+        logic_editor_service.firstLogicId())->rungs.front();
+    require(wired_rung.condition->kind == ConditionExpressionKind::Series
+                && wired_rung.condition->children.at(1).kind
+                    == ConditionExpressionKind::Wire,
+            "F11 must insert a selectable horizontal wire after the current condition");
+    delete_horizontal_wire_action->trigger();
+    require(logic_editor_service.findLogic(logic_editor_service.firstLogicId())
+                ->rungs.front().condition->kind == ConditionExpressionKind::Node,
+            "Shift+F11 must delete the selected horizontal wire");
+    logic_editor->selectNode(restored_node_id);
+    insert_horizontal_wire_action->trigger();
+    add_normally_open_action->trigger();
+    const LadderRung &replaced_wire_rung = logic_editor_service.findLogic(
+        logic_editor_service.firstLogicId())->rungs.front();
+    require(replaced_wire_rung.condition->kind == ConditionExpressionKind::Series
+                && replaced_wire_rung.condition->children.at(1).kind
+                    == ConditionExpressionKind::Node,
+            "adding a contact on a selected wire must replace the wire in place");
+    undo_action->trigger();
+    undo_action->trigger();
+
+    logic_editor->selectNode(restored_node_id);
+    insert_vertical_wire_action->trigger();
+    const LadderRung &vertical_rung = logic_editor_service.findLogic(
+        logic_editor_service.firstLogicId())->rungs.front();
+    require(vertical_rung.condition->kind == ConditionExpressionKind::Parallel
+                && vertical_rung.condition->children.at(1).kind
+                    == ConditionExpressionKind::Wire,
+            "F12 must create a structured wire bypass with vertical connectors");
+    logic_editor->scene()->clearSelection();
+    for (QGraphicsItem *item : logic_editor->scene()->items())
+    {
+        if (qFuzzyCompare(item->zValue(), 2.5))
+        {
+            item->setSelected(true);
+        }
+    }
+    delete_vertical_wire_action->trigger();
+    require(logic_editor_service.findLogic(logic_editor_service.firstLogicId())
+                ->rungs.front().condition->kind == ConditionExpressionKind::Node,
+            "Shift+F12 must remove the selected vertical connection branch");
+
+    logic_editor->selectNode(restored_node_id);
     parallel_insert_action->trigger();
     add_normal_coil_action->trigger();
     const ControlLogic *logic = logic_editor_service.findLogic(
diff --git a/app/tests/offline_simulation_service_tests.cpp b/app/tests/offline_simulation_service_tests.cpp
index 01177e3..4b51014 100644
--- a/app/tests/offline_simulation_service_tests.cpp
+++ b/app/tests/offline_simulation_service_tests.cpp
@@ -257,6 +257,44 @@ void testNestedSeriesParallelExpression()
     require(readBit(repository, 10), "A branch must independently energize output");
 }
 
+void testWirePassThroughAndPowerTrace()
+{
+    VirtualRegisterRepository repository;
+    SoftwareLogicExecutor executor;
+    ConditionExpression root;
+    root.id = "wire-series";
+    root.kind = ConditionExpressionKind::Series;
+    root.children = {
+        ConditionExpression::fromNode(contact("wire-input", 0)),
+        ConditionExpression::fromWire("wire-segment", 2),
+        ConditionExpression::fromNode(contact("wire-output", 1))};
+    LadderRung wired_rung;
+    wired_rung.id = "wired-rung";
+    wired_rung.name = "wired-rung";
+    wired_rung.condition = root;
+    wired_rung.output = coil("wired-coil", 10);
+    const ControlLogic program = logic({wired_rung});
+
+    writeBit(repository, 1, true);
+    LogicTraceSnapshot trace;
+    require(executor.executeScan({program}, repository, &trace).succeeded,
+            "wire expression scan must succeed");
+    require(!readBit(repository, 10),
+            "a horizontal wire must not bypass a false upstream series contact");
+    require(trace.expressionValues.at("wire-segment")
+                && !trace.expressionInputValues.at("wire-segment")
+                && !trace.expressionPowerValues.at("wire-segment"),
+            "a wire must remain logically true without showing false upstream power");
+
+    writeBit(repository, 0, true);
+    require(executor.executeScan({program}, repository, &trace).succeeded,
+            "powered wire expression scan must succeed");
+    require(readBit(repository, 10)
+                && trace.expressionInputValues.at("wire-segment")
+                && trace.expressionPowerValues.at("wire-segment"),
+            "a powered horizontal wire must pass current to the downstream contact");
+}
+
 void testSeriesParallelContactsAndSequentialVisibility()
 {
     VirtualRegisterRepository repository;
@@ -862,6 +900,7 @@ int main(int argc, char *argv[])
     {
         testSeriesParallelContactsAndSequentialVisibility();
         testNestedSeriesParallelExpression();
+        testWirePassThroughAndPowerTrace();
         testAllComparisons();
         testSetResetAndDisabledLogic();
         testMultipleLogicScanOrderAndTraceIsolation();
diff --git a/app/tests/project_management_tests.cpp b/app/tests/project_management_tests.cpp
index eda5681..ec9b4ec 100644
--- a/app/tests/project_management_tests.cpp
+++ b/app/tests/project_management_tests.cpp
@@ -148,6 +148,7 @@ Project makeExampleProject()
     series.kind = ConditionExpressionKind::Series;
     series.children = {
         std::move(parallel),
+        ConditionExpression::fromWire("start-wire", 2),
         ConditionExpression::fromNode(compare)};
     rung.condition = std::move(series);
     rung.output = coil;
@@ -496,6 +497,9 @@ void testExampleProjectRoundTrip()
                 == ConditionExpressionKind::Parallel
                 && rung.condition->children.front().children.size() == 2U,
             "parallel expression branches must survive round trip");
+    require(rung.condition->children.at(1).kind == ConditionExpressionKind::Wire
+                && rung.condition->children.at(1).wire->columnSpan == 2,
+            "horizontal wire span must survive JSON round trip");
     require(rung.output.has_value(),
             "ladder output must survive round trip");
 
@@ -553,7 +557,7 @@ void testExampleProjectRoundTrip()
             "ADD and SUB operations must survive round trip");
 
     const auto &compare = std::get<CompareNodeConfig>(
-        rung.condition->children.at(1).node->config);
+        rung.condition->children.at(2).node->config);
     require(compare.address.index() == 2 && compare.value == 100,
             "comparison configuration must survive round trip");
     require(service.saveAs(second_path.toStdString()).succeeded,