plc_control/API.md

PLC Control 接口说明

本文档基于当前服务端路由与处理器代码整理，覆盖 HTTP API 和 WebSocket 实时消息。

基本信息

• 服务端默认提供静态 UI：/ui
• HTTP API 前缀：/api
• 公共实时 WebSocket：/ws/public
• 客户端专属 WebSocket：/ws/client/{client_id}

通用错误响应

接口失败时通常返回：

{
  "err_code": 400,
  "err_msg": "Invalid JSON format",
  "err_detail": null
}

常见状态码：

• 400 Bad Request：参数错误
• 403 Forbidden：写入权限不足或控制条件不满足
• 404 Not Found：资源不存在
• 500 Internal Server Error：服务端内部错误

---

Source

GET /api/source

获取所有已启用数据源及其连接状态。

响应示例：

[
  {
    "id": "uuid",
    "name": "PLC-1",
    "protocol": "opcua",
    "endpoint": "opc.tcp://127.0.0.1:4840",
    "security_policy": null,
    "security_mode": null,
    "enabled": true,
    "created_at": "2026-03-20 10:00:00.000",
    "updated_at": "2026-03-20 10:00:00.000",
    "is_connected": true,
    "last_error": null,
    "last_time": "2026-03-20 10:05:00.000"
  }
]

POST /api/source

创建数据源。

请求体：

{
  "name": "PLC-1",
  "endpoint": "opc.tcp://127.0.0.1:4840",
  "enabled": true
}

响应：

{ "id": "uuid" }

PUT /api/source/{source_id}

更新数据源。请求体字段均可选：

{
  "name": "PLC-1",
  "endpoint": "opc.tcp://127.0.0.1:4840",
  "enabled": true,
  "security_policy": "None",
  "security_mode": "None",
  "username": "user",
  "password": "pass"
}

DELETE /api/source/{source_id}

删除数据源。成功响应：204 No Content

POST /api/source/{source_id}/reconnect

手动重连指定数据源。

{ "ok_msg": "Source reconnected successfully" }

POST /api/source/{source_id}/browse

从 OPC UA 源浏览节点并写入本地 node 表。

{ "ok_msg": "Browse completed", "total_nodes": 123 }

GET /api/source/{source_id}/node-tree

获取指定数据源的节点树（含 children 递归嵌套）。

---

Point

GET /api/point

分页获取点位列表，同时返回实时监测值。

查询参数：

• source_id：可选，按数据源过滤
• equipment_id：可选，按设备过滤
• page：页码
• page_size：每页条数（-1 表示全量）

响应示例：

{
  "data": [
    {
      "point": {
        "id": "uuid",
        "node_id": "uuid",
        "name": "Temperature",
        "equipment_id": "uuid",
        "signal_role": "run",
        "created_at": "2026-03-20 10:00:00.000",
        "updated_at": "2026-03-20 10:00:00.000"
      },
      "point_monitor": {
        "point_id": "uuid",
        "timestamp": "2026-03-20 10:05:00.000",
        "quality": "good",
        "value": 12.3,
        "value_type": "float",
        "value_text": "12.3"
      }
    }
  ],
  "total": 1,
  "page": 1,
  "page_size": 100
}

GET /api/point/{point_id}

获取单个点位。

GET /api/point/{point_id}/history

获取点位最近历史样本（进程内存环形缓冲，重启后清空）。

查询参数：limit（可选，默认 120，最大 1000）

[
  {
    "timestamp": "2026-03-20 10:05:00.000",
    "quality": "good",
    "value": 12.3,
    "value_text": "12.3",
    "value_number": 12.3
  }
]

PUT /api/point/{point_id}

更新点位元数据，字段均可选：

{
  "name": "Temperature",
  "description": "Room temperature",
  "unit": "°C",
  "equipment_id": "uuid",
  "signal_role": "run"
}

DELETE /api/point/{point_id}

删除单个点位。

POST /api/point/batch

根据节点批量创建点位。

{ "node_ids": ["uuid1", "uuid2"] }

响应：

{
  "success_count": 2,
  "failed_count": 0,
  "failed_node_ids": [],
  "created_point_ids": ["uuid3", "uuid4"]
}

DELETE /api/point/batch

批量删除点位。

{ "point_ids": ["uuid1", "uuid2"] }

PUT /api/point/batch/set-equipment

批量设置点位的设备绑定和信号角色。

{
  "point_ids": ["uuid1", "uuid2"],
  "equipment_id": "uuid",
  "signal_role": "run"
}

POST /api/point/value/batch

批量写点。

请求头：X-Write-Key: <key>

{
  "items": [
    { "point_id": "uuid", "value": 12.3 }
  ]
}

---

Equipment

GET /api/equipment

分页获取设备列表，包含每台设备绑定的点位数量。

查询参数：page、page_size（-1 全量）、keyword（可选，按 code/name 模糊搜索）

响应示例：

{
  "data": [
    {
      "id": "uuid",
      "unit_id": "uuid",
      "code": "E01",
      "name": "投煤器1",
      "kind": "coal_feeder",
      "description": null,
      "created_at": "2026-03-20 10:00:00.000",
      "updated_at": "2026-03-20 10:00:00.000",
      "point_count": 5
    }
  ],
  "total": 1,
  "page": 1,
  "page_size": 20
}

POST /api/equipment

创建设备。

{
  "unit_id": "uuid",
  "code": "E01",
  "name": "投煤器1",
  "kind": "coal_feeder",
  "description": null
}

响应：201 Created

{ "id": "uuid", "ok_msg": "Equipment created successfully" }

PUT /api/equipment/{equipment_id}

更新设备，字段均可选：

{
  "unit_id": "uuid",
  "code": "E01",
  "name": "投煤器1",
  "kind": "coal_feeder",
  "description": null
}

DELETE /api/equipment/{equipment_id}

删除设备。成功响应：204 No Content

GET /api/equipment/{equipment_id}/points

获取指定设备下所有绑定点位。

PUT /api/equipment/batch/set-unit

批量将设备绑定到控制单元。

{
  "equipment_ids": ["uuid1", "uuid2"],
  "unit_id": "uuid"
}

---

Unit（控制单元）

GET /api/unit

分页获取控制单元列表。

查询参数：page、page_size、keyword（可选）

响应字段包含：id、code、name、enabled、run_time_sec、stop_time_sec、acc_time_sec、bl_time_sec、require_manual_ack_after_fault

POST /api/unit

创建控制单元。

{
  "code": "U01",
  "name": "1号机组",
  "description": null,
  "enabled": true,
  "run_time_sec": 60,
  "stop_time_sec": 30,
  "acc_time_sec": 3600,
  "bl_time_sec": 10,
  "require_manual_ack_after_fault": true
}

响应：201 Created

{ "id": "uuid", "ok_msg": "Unit created successfully" }

GET /api/unit/{unit_id}

获取单个控制单元。

PUT /api/unit/{unit_id}

更新控制单元，字段均可选。

DELETE /api/unit/{unit_id}

删除控制单元。成功响应：204 No Content

GET /api/unit/{unit_id}/runtime

获取控制单元的当前运行时状态（内存中，不持久化）。

响应示例：

{
  "unit_id": "uuid",
  "state": "running",
  "auto_enabled": true,
  "accumulated_run_sec": 3600000,
  "current_run_elapsed_sec": 60000,
  "current_stop_elapsed_sec": 0,
  "distributor_run_elapsed_sec": 0,
  "fault_locked": false,
  "flt_active": false,
  "comm_locked": false,
  "manual_ack_required": false,
  "last_tick_at": "2026-03-25 10:00:00.000"
}

state 枚举值：stopped / running / distributor_running / fault_locked / comm_locked

注意：时间字段单位为毫秒（ms）。

GET /api/unit/{unit_id}/detail

获取控制单元及其下所有设备和点位的完整嵌套结构。

响应示例：

{
  "id": "uuid",
  "code": "U01",
  "name": "1号机组",
  "enabled": true,
  "equipments": [
    {
      "id": "uuid",
      "code": "E01",
      "name": "投煤器1",
      "kind": "coal_feeder",
      "points": [
        {
          "id": "uuid",
          "name": "启动命令",
          "signal_role": "start_cmd",
          "equipment_id": "uuid"
        }
      ]
    }
  ]
}

---

Event（系统事件）

GET /api/event

分页获取系统控制事件记录。

查询参数：

• unit_id：可选，按控制单元过滤
• event_type：可选，按事件类型过滤
• page、page_size

响应示例：

{
  "data": [
    {
      "id": "uuid",
      "event_type": "equipment.start_command_sent",
      "level": "info",
      "unit_id": "uuid",
      "equipment_id": "uuid",
      "message": "Start command sent to equipment ...",
      "payload": {},
      "created_at": "2026-03-25 10:00:00.000"
    }
  ],
  "total": 1,
  "page": 1,
  "page_size": 20
}

---

Control（控制命令）

所有控制命令在执行前会校验：信号质量、REM 状态、FLT 状态、单元通讯锁、单元故障锁。

POST /api/control/equipment/{equipment_id}/start

向设备发送启动脉冲命令（写 HIGH → 延迟 300ms → 写 LOW）。

响应示例：

{
  "ok_msg": "Equipment start command sent",
  "equipment_id": "uuid",
  "unit_id": "uuid",
  "command_role": "start_cmd",
  "command_point_id": "uuid",
  "pulse_ms": 300
}

失败（设备未处于可启动状态）返回 403 Forbidden。

POST /api/control/equipment/{equipment_id}/stop

向设备发送停止脉冲命令。响应结构同上。

POST /api/control/unit/{unit_id}/start-auto

启动指定控制单元的自动控制循环。单元须已启用（enabled = true）。

{ "ok_msg": "Auto control started", "unit_id": "uuid" }

POST /api/control/unit/{unit_id}/stop-auto

停止自动控制循环。设备当前状态保持不变，不会自动停机。

{ "ok_msg": "Auto control stopped", "unit_id": "uuid" }

POST /api/control/unit/{unit_id}/ack-fault

人工确认故障，解除故障锁定。要求：fault_locked = true 且 flt_active = false（故障信号已消失）。

{ "ok_msg": "Fault acknowledged", "unit_id": "uuid" }

---

WebSocket

连接地址

• 公共广播：/ws/public
• 客户端专属：/ws/client/{client_id}

服务端主动推送消息

PointNewValue

点位实时值更新：

{
  "type": "PointNewValue",
  "data": {
    "point_id": "uuid",
    "timestamp": "2026-03-20 10:05:00.000",
    "quality": "good",
    "value": 12.3,
    "value_type": "float",
    "value_text": "12.3"
  }
}

EventCreated

系统事件创建（控制操作、故障、状态变更等）：

{
  "type": "EventCreated",
  "data": {
    "id": "uuid",
    "event_type": "equipment.start_command_sent",
    "level": "info",
    "unit_id": "uuid",
    "equipment_id": "uuid",
    "message": "...",
    "created_at": "2026-03-25 10:00:00.000"
  }
}

UnitRuntimeChanged

控制单元运行时状态变更（每 500ms tick 后广播）：

{
  "type": "UnitRuntimeChanged",
  "data": {
    "unit_id": "uuid",
    "state": "running",
    "auto_enabled": true,
    "fault_locked": false,
    "comm_locked": false,
    "manual_ack_required": false,
    "accumulated_run_sec": 3600000
  }
}

PointSetValueBatchResult

批量写点结果回调：

{
  "type": "PointSetValueBatchResult",
  "data": {
    "success": true,
    "err_msg": null,
    "success_count": 1,
    "failed_count": 0,
    "results": []
  }
}

客户端发送消息

写权限认证

{
  "type": "auth_write",
  "data": { "key": "your-write-key" }
}

批量写点

{
  "type": "point_set_value_batch",
  "data": {
    "items": [
      { "point_id": "uuid", "value": 12.3 }
    ]
  }
}

---

备注

• 运行时状态（/runtime）存储在内存中，服务重启后重置。
• 历史曲线数据（/history）同样是内存环形缓冲，重启后清空。
• 控制单元时间配置字段（run_time_sec 等）单位为秒，运行时 elapsed 字段单位为毫秒。
• 自动控制启动后，状态机以 500ms 为周期运行，实时状态通过 WebSocket UnitRuntimeChanged 推送。