diff --git a/src/control/engine.rs b/src/control/engine.rs
new file mode 100644
index 0000000..2e69c1c
--- /dev/null
+++ b/src/control/engine.rs
@@ -0,0 +1,7 @@
+use std::sync::Arc;
+
+use crate::{control::runtime::ControlRuntimeStore, AppState};
+
+pub fn start(_state: AppState, _runtime_store: Arc<ControlRuntimeStore>) {
+    // Automatic control state machine will be added in the next step.
+}
diff --git a/src/control/mod.rs b/src/control/mod.rs
new file mode 100644
index 0000000..77d9fe5
--- /dev/null
+++ b/src/control/mod.rs
@@ -0,0 +1,3 @@
+pub mod engine;
+pub mod runtime;
+pub mod validator;
diff --git a/src/control/runtime.rs b/src/control/runtime.rs
new file mode 100644
index 0000000..d99347b
--- /dev/null
+++ b/src/control/runtime.rs
@@ -0,0 +1,75 @@
+use std::{collections::HashMap, sync::Arc};
+
+use chrono::{DateTime, Utc};
+use tokio::sync::RwLock;
+use uuid::Uuid;
+
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum UnitRuntimeState {
+    Stopped,
+    Running,
+    DistributorRunning,
+    FaultLocked,
+    CommLocked,
+}
+
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct UnitRuntime {
+    pub unit_id: Uuid,
+    pub state: UnitRuntimeState,
+    pub accumulated_run_sec: i64,
+    pub current_run_elapsed_sec: i64,
+    pub current_stop_elapsed_sec: i64,
+    pub distributor_run_elapsed_sec: i64,
+    pub fault_locked: bool,
+    pub comm_locked: bool,
+    pub manual_ack_required: bool,
+    pub last_tick_at: Option<DateTime<Utc>>,
+}
+
+impl UnitRuntime {
+    pub fn new(unit_id: Uuid) -> Self {
+        Self {
+            unit_id,
+            state: UnitRuntimeState::Stopped,
+            accumulated_run_sec: 0,
+            current_run_elapsed_sec: 0,
+            current_stop_elapsed_sec: 0,
+            distributor_run_elapsed_sec: 0,
+            fault_locked: false,
+            comm_locked: false,
+            manual_ack_required: false,
+            last_tick_at: None,
+        }
+    }
+}
+
+#[derive(Clone, Default)]
+pub struct ControlRuntimeStore {
+    inner: Arc<RwLock<HashMap<Uuid, UnitRuntime>>>,
+}
+
+impl ControlRuntimeStore {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub async fn get(&self, unit_id: Uuid) -> Option<UnitRuntime> {
+        self.inner.read().await.get(&unit_id).cloned()
+    }
+
+    pub async fn get_or_init(&self, unit_id: Uuid) -> UnitRuntime {
+        if let Some(runtime) = self.get(unit_id).await {
+            return runtime;
+        }
+
+        let runtime = UnitRuntime::new(unit_id);
+        self.inner.write().await.insert(unit_id, runtime.clone());
+        runtime
+    }
+
+    pub async fn upsert(&self, runtime: UnitRuntime) {
+        self.inner.write().await.insert(runtime.unit_id, runtime);
+    }
+}
diff --git a/src/control/validator.rs b/src/control/validator.rs
new file mode 100644
index 0000000..934baa7
--- /dev/null
+++ b/src/control/validator.rs
@@ -0,0 +1,191 @@
+use std::collections::HashMap;
+
+use serde_json::json;
+use uuid::Uuid;
+
+use crate::{
+    service::EquipmentRolePoint,
+    telemetry::{DataValue, PointMonitorInfo, PointQuality, ValueType},
+    util::response::ApiErr,
+    AppState,
+};
+
+#[derive(Debug, Clone, Copy)]
+pub enum ControlAction {
+    Start,
+    Stop,
+}
+
+impl ControlAction {
+    pub fn as_str(self) -> &'static str {
+        match self {
+            Self::Start => "start",
+            Self::Stop => "stop",
+        }
+    }
+
+    pub fn command_role(self) -> &'static str {
+        match self {
+            Self::Start => "start_cmd",
+            Self::Stop => "stop_cmd",
+        }
+    }
+}
+
+pub struct ManualControlContext {
+    pub unit_id: Option<Uuid>,
+    pub command_point: EquipmentRolePoint,
+    pub command_value_type: Option<ValueType>,
+}
+
+pub async fn validate_manual_control(
+    state: &AppState,
+    equipment_id: Uuid,
+    action: ControlAction,
+) -> Result<ManualControlContext, ApiErr> {
+    let equipment = crate::service::get_equipment_by_id(&state.pool, equipment_id)
+        .await?
+        .ok_or_else(|| ApiErr::NotFound("Equipment not found".to_string(), None))?;
+
+    let role_points = crate::service::get_equipment_role_points(&state.pool, equipment_id).await?;
+    if role_points.is_empty() {
+        return Err(ApiErr::BadRequest(
+            "Equipment has no bound role points".to_string(),
+            Some(json!({ "equipment_id": equipment_id })),
+        ));
+    }
+
+    let role_map: HashMap<&str, &EquipmentRolePoint> = role_points
+        .iter()
+        .map(|point| (point.signal_role.as_str(), point))
+        .collect();
+
+    let command_point = role_map
+        .get(action.command_role())
+        .copied()
+        .ok_or_else(|| {
+            ApiErr::BadRequest(
+                format!("Equipment missing role point {}", action.command_role()),
+                Some(json!({
+                    "equipment_id": equipment_id,
+                    "required_role": action.command_role()
+                })),
+            )
+        })?
+        .clone();
+
+    let monitor_guard = state
+        .connection_manager
+        .get_point_monitor_data_read_guard()
+        .await;
+
+    validate_quality(
+        role_map.get("rem").copied(),
+        &monitor_guard,
+        "REM",
+        equipment_id,
+    )?;
+    validate_quality(
+        role_map.get("flt").copied(),
+        &monitor_guard,
+        "FLT",
+        equipment_id,
+    )?;
+    if let Some(rem_point) = role_map.get("rem").copied() {
+        let rem_monitor = monitor_guard
+            .get(&rem_point.point_id)
+            .ok_or_else(|| missing_monitor_err("REM", equipment_id))?;
+        if !monitor_value_as_bool(rem_monitor) {
+            return Err(ApiErr::Forbidden(
+                "Remote control not allowed, REM is not enabled".to_string(),
+                Some(json!({ "equipment_id": equipment_id })),
+            ));
+        }
+    }
+
+    if let Some(flt_point) = role_map.get("flt").copied() {
+        let flt_monitor = monitor_guard
+            .get(&flt_point.point_id)
+            .ok_or_else(|| missing_monitor_err("FLT", equipment_id))?;
+        if monitor_value_as_bool(flt_monitor) {
+            return Err(ApiErr::Forbidden(
+                "Equipment fault is active, command denied".to_string(),
+                Some(json!({ "equipment_id": equipment_id })),
+            ));
+        }
+    }
+
+    if let Some(estop_point) = role_map.get("estop").copied() {
+        let estop_monitor = monitor_guard
+            .get(&estop_point.point_id)
+            .ok_or_else(|| missing_monitor_err("ESTOP", equipment_id))?;
+        if monitor_value_as_bool(estop_monitor) {
+            return Err(ApiErr::Forbidden(
+                "Emergency stop is active, command denied".to_string(),
+                Some(json!({ "equipment_id": equipment_id })),
+            ));
+        }
+    }
+
+    let command_value_type = monitor_guard
+        .get(&command_point.point_id)
+        .and_then(|item| item.value_type.clone());
+
+    Ok(ManualControlContext {
+        unit_id: equipment.unit_id,
+        command_point,
+        command_value_type,
+    })
+}
+
+fn validate_quality(
+    role_point: Option<&EquipmentRolePoint>,
+    monitor_map: &HashMap<Uuid, PointMonitorInfo>,
+    role: &str,
+    equipment_id: Uuid,
+) -> Result<(), ApiErr> {
+    let Some(role_point) = role_point else {
+        return Ok(());
+    };
+
+    let monitor = monitor_map
+        .get(&role_point.point_id)
+        .ok_or_else(|| missing_monitor_err(role, equipment_id))?;
+
+    if monitor.quality != PointQuality::Good {
+        return Err(ApiErr::Forbidden(
+            format!("Communication abnormal for role {}", role),
+            Some(json!({
+                "equipment_id": equipment_id,
+                "role": role,
+                "quality": monitor.quality
+            })),
+        ));
+    }
+
+    Ok(())
+}
+
+fn missing_monitor_err(role: &str, equipment_id: Uuid) -> ApiErr {
+    ApiErr::Forbidden(
+        format!("No realtime value for role {}", role),
+        Some(json!({
+            "equipment_id": equipment_id,
+            "role": role
+        })),
+    )
+}
+
+fn monitor_value_as_bool(monitor: &PointMonitorInfo) -> bool {
+    match monitor.value.as_ref() {
+        Some(DataValue::Bool(value)) => *value,
+        Some(DataValue::Int(value)) => *value != 0,
+        Some(DataValue::UInt(value)) => *value != 0,
+        Some(DataValue::Float(value)) => *value != 0.0,
+        Some(DataValue::Text(value)) => matches!(
+            value.trim().to_ascii_lowercase().as_str(),
+            "1" | "true" | "on" | "yes"
+        ),
+        _ => false,
+    }
+}
diff --git a/src/event.rs b/src/event.rs
index c6b0004..509cf5d 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -24,6 +24,16 @@ pub enum AppEvent {
         source_id: Uuid,
         point_ids: Vec<Uuid>,
     },
+    EquipmentStartCommandSent {
+        equipment_id: Uuid,
+        unit_id: Option<Uuid>,
+        point_id: Uuid,
+    },
+    EquipmentStopCommandSent {
+        equipment_id: Uuid,
+        unit_id: Option<Uuid>,
+        point_id: Uuid,
+    },
     PointNewValue(crate::telemetry::PointNewValue),
 }
 
@@ -182,6 +192,30 @@ async fn handle_control_event(
                 tracing::error!("Failed to unsubscribe points: {}", e);
             }
         }
+        AppEvent::EquipmentStartCommandSent {
+            equipment_id,
+            unit_id,
+            point_id,
+        } => {
+            tracing::info!(
+                "Equipment start command sent: equipment={}, unit={:?}, point={}",
+                equipment_id,
+                unit_id,
+                point_id
+            );
+        }
+        AppEvent::EquipmentStopCommandSent {
+            equipment_id,
+            unit_id,
+            point_id,
+        } => {
+            tracing::info!(
+                "Equipment stop command sent: equipment={}, unit={:?}, point={}",
+                equipment_id,
+                unit_id,
+                point_id
+            );
+        }
         AppEvent::PointNewValue(_) => {
             tracing::warn!("PointNewValue routed to control worker unexpectedly");
         }
@@ -213,7 +247,7 @@ async fn persist_event_if_needed(event: &AppEvent, pool: &sqlx::PgPool) {
             "warn",
             None,
             None,
-            Some(*source_id),
+            None,
             format!("Source {} deleted", source_id),
             serde_json::json!({ "source_id": source_id }),
         )),
@@ -235,6 +269,40 @@ async fn persist_event_if_needed(event: &AppEvent, pool: &sqlx::PgPool) {
             format!("{} points deleted for source {}", point_ids.len(), source_id),
             serde_json::json!({ "source_id": source_id, "point_ids": point_ids }),
         )),
+        AppEvent::EquipmentStartCommandSent {
+            equipment_id,
+            unit_id,
+            point_id,
+        } => Some((
+            "equipment.start_command_sent",
+            "info",
+            *unit_id,
+            Some(*equipment_id),
+            None,
+            format!("Start command sent to equipment {}", equipment_id),
+            serde_json::json!({
+                "equipment_id": equipment_id,
+                "unit_id": unit_id,
+                "point_id": point_id
+            }),
+        )),
+        AppEvent::EquipmentStopCommandSent {
+            equipment_id,
+            unit_id,
+            point_id,
+        } => Some((
+            "equipment.stop_command_sent",
+            "info",
+            *unit_id,
+            Some(*equipment_id),
+            None,
+            format!("Stop command sent to equipment {}", equipment_id),
+            serde_json::json!({
+                "equipment_id": equipment_id,
+                "unit_id": unit_id,
+                "point_id": point_id
+            }),
+        )),
         AppEvent::PointNewValue(_) => None,
     };
 
diff --git a/src/handler/control.rs b/src/handler/control.rs
index 2dea52b..b12ff04 100644
--- a/src/handler/control.rs
+++ b/src/handler/control.rs
@@ -5,10 +5,14 @@ use axum::{
     Json,
 };
 use serde::Deserialize;
+use serde_json::json;
 use uuid::Uuid;
 use validator::Validate;
 
 use crate::{
+    connection::{BatchSetPointValueReq, SetPointValueReqItem},
+    control::validator::{validate_manual_control, ControlAction},
+    telemetry::ValueType,
     util::{
         pagination::{PaginatedResponse, PaginationParams},
         response::ApiErr,
@@ -47,6 +51,106 @@ pub async fn get_unit_list(
     )))
 }
 
+pub async fn start_equipment(
+    State(state): State<AppState>,
+    Path(equipment_id): Path<Uuid>,
+) -> Result<impl IntoResponse, ApiErr> {
+    send_equipment_command(state, equipment_id, ControlAction::Start).await
+}
+
+pub async fn stop_equipment(
+    State(state): State<AppState>,
+    Path(equipment_id): Path<Uuid>,
+) -> Result<impl IntoResponse, ApiErr> {
+    send_equipment_command(state, equipment_id, ControlAction::Stop).await
+}
+
+async fn send_equipment_command(
+    state: AppState,
+    equipment_id: Uuid,
+    action: ControlAction,
+) -> Result<impl IntoResponse, ApiErr> {
+    let context = validate_manual_control(&state, equipment_id, action).await?;
+    let pulse_ms = 300u64;
+
+    let high_value = pulse_value(true, context.command_value_type.as_ref());
+    let low_value = pulse_value(false, context.command_value_type.as_ref());
+
+    let high_result = state
+        .connection_manager
+        .write_point_values_batch(BatchSetPointValueReq {
+            items: vec![SetPointValueReqItem {
+                point_id: context.command_point.point_id,
+                value: high_value,
+            }],
+        })
+        .await
+        .map_err(|e| ApiErr::Internal(e, None))?;
+
+    if !high_result.success {
+        return Err(ApiErr::Internal(
+            "Failed to write pulse high level".to_string(),
+            Some(json!(high_result)),
+        ));
+    }
+
+    tokio::time::sleep(std::time::Duration::from_millis(pulse_ms)).await;
+
+    let low_result = state
+        .connection_manager
+        .write_point_values_batch(BatchSetPointValueReq {
+            items: vec![SetPointValueReqItem {
+                point_id: context.command_point.point_id,
+                value: low_value,
+            }],
+        })
+        .await
+        .map_err(|e| ApiErr::Internal(e, None))?;
+
+    if !low_result.success {
+        return Err(ApiErr::Internal(
+            "Pulse reset failed after command high level succeeded".to_string(),
+            Some(json!(low_result)),
+        ));
+    }
+
+    let event = match action {
+        ControlAction::Start => crate::event::AppEvent::EquipmentStartCommandSent {
+            equipment_id,
+            unit_id: context.unit_id,
+            point_id: context.command_point.point_id,
+        },
+        ControlAction::Stop => crate::event::AppEvent::EquipmentStopCommandSent {
+            equipment_id,
+            unit_id: context.unit_id,
+            point_id: context.command_point.point_id,
+        },
+    };
+    let _ = state.event_manager.send(event);
+
+    Ok(Json(json!({
+        "ok_msg": format!("Equipment {} command sent", action.as_str()),
+        "equipment_id": equipment_id,
+        "unit_id": context.unit_id,
+        "command_role": context.command_point.signal_role,
+        "command_point_id": context.command_point.point_id,
+        "pulse_ms": pulse_ms
+    })))
+}
+
+fn pulse_value(high: bool, value_type: Option<&ValueType>) -> serde_json::Value {
+    match value_type {
+        Some(ValueType::Bool) => serde_json::Value::Bool(high),
+        _ => {
+            if high {
+                json!(1)
+            } else {
+                json!(0)
+            }
+        }
+    }
+}
+
 pub async fn get_unit(
     State(state): State<AppState>,
     Path(unit_id): Path<Uuid>,
diff --git a/src/main.rs b/src/main.rs
index 5aadce9..f1a3a82 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,4 @@
+mod control;
 mod config;
 mod connection;
 mod db;
@@ -10,7 +11,7 @@ mod telemetry;
 mod util;
 mod websocket;
 use axum::{
-    routing::{get, put},
+    routing::{get, post, put},
     Router,
 };
 use config::AppConfig;
@@ -30,6 +31,7 @@ pub struct AppState {
     pub connection_manager: Arc<ConnectionManager>,
     pub event_manager: Arc<EventManager>,
     pub ws_manager: Arc<websocket::WebSocketManager>,
+    pub control_runtime: Arc<control::runtime::ControlRuntimeStore>,
 }
 #[tokio::main]
 async fn main() {
@@ -52,6 +54,7 @@ async fn main() {
     connection_manager.set_pool_and_start_reconnect_task(Arc::new(pool.clone()));
 
     let connection_manager = Arc::new(connection_manager);
+    let control_runtime = Arc::new(control::runtime::ControlRuntimeStore::new());
 
     // Connect to all enabled sources concurrently
     let sources = service::get_all_enabled_sources(&pool)
@@ -88,7 +91,9 @@ async fn main() {
         connection_manager: connection_manager.clone(),
         event_manager,
         ws_manager,
+        control_runtime: control_runtime.clone(),
     };
+    control::engine::start(state.clone(), control_runtime);
     let app = build_router(state.clone());
     let addr = format!("{}:{}", config.server_host, config.server_port);
     tracing::info!("Starting server at http://{}", addr);
@@ -204,6 +209,14 @@ fn build_router(state: AppState) -> Router {
             "/api/event",
             get(handler::control::get_event_list),
         )
+        .route(
+            "/api/control/equipment/{equipment_id}/start",
+            post(handler::control::start_equipment),
+        )
+        .route(
+            "/api/control/equipment/{equipment_id}/stop",
+            post(handler::control::stop_equipment),
+        )
         .route(
             "/api/tag",
             get(handler::tag::get_tag_list).post(handler::tag::create_tag),
diff --git a/src/service/control.rs b/src/service/control.rs
index 498259b..7be133b 100644
--- a/src/service/control.rs
+++ b/src/service/control.rs
@@ -1,7 +1,13 @@
 use crate::model::{ControlUnit, EventRecord};
-use sqlx::{PgPool, QueryBuilder};
+use sqlx::{PgPool, QueryBuilder, Row};
 use uuid::Uuid;
 
+#[derive(Debug, Clone)]
+pub struct EquipmentRolePoint {
+    pub point_id: Uuid,
+    pub signal_role: String,
+}
+
 pub async fn get_units_count(pool: &PgPool, keyword: Option<&str>) -> Result<i64, sqlx::Error> {
     match keyword {
         Some(keyword) => {
@@ -301,3 +307,32 @@ pub async fn get_events_paginated(
 
     qb.build_query_as::<EventRecord>().fetch_all(pool).await
 }
+
+pub async fn get_equipment_role_points(
+    pool: &PgPool,
+    equipment_id: Uuid,
+) -> Result<Vec<EquipmentRolePoint>, sqlx::Error> {
+    let rows = sqlx::query(
+        r#"
+        SELECT
+            p.id AS point_id,
+            p.signal_role
+        FROM equipment e
+        INNER JOIN point p ON p.equipment_id = e.id
+        WHERE e.id = $1
+          AND p.signal_role IS NOT NULL
+        ORDER BY p.created_at
+        "#,
+    )
+    .bind(equipment_id)
+    .fetch_all(pool)
+    .await?;
+
+    Ok(rows
+        .into_iter()
+        .map(|row| EquipmentRolePoint {
+            point_id: row.get("point_id"),
+            signal_role: row.get("signal_role"),
+        })
+        .collect())
+}