xiongyi/Feeding_control_system
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
6e74eaf206ea3d42c6931f0bfd43f270c2aa7fd5
Feeding_control_system/opc/opcua_server.py

237 lines
9.6 KiB
Python
Raw Normal View History

feeding
2025-11-17 00:05:40 +08:00
#!/usr/bin/env python3
"""
简单的OPC UA服务器示例
用于工业自动化数据通信
"""
from opcua import Server, ua
import time
import random
import threading
from datetime import datetime
0209整理
2026-02-10 10:18:17 +08:00
# from core.system import SystemState
# from config.ini_manager import ini_manager
feeding
2025-11-17 00:05:40 +08:00
class SimpleOPCUAServer:
0209整理
2026-02-10 10:18:17 +08:00
# def __init__(self, state, endpoint=ini_manager.opcua_endpoint, name="Feed_Server"):
def __init__(self, endpoint='', name="Feed_Server"):
feeding
2025-11-17 00:05:40 +08:00
"""
初始化OPC UA服务器
Args:
endpoint: 服务器端点地址
name: 服务器名称
"""
self.server = Server()
self.server.set_endpoint(endpoint)
self.server.set_server_name(name)
0209整理
2026-02-10 10:18:17 +08:00
# self.state = state
feeding
2025-11-17 00:05:40 +08:00
# 设置服务器命名空间
self.namespace = self.server.register_namespace("Feed_Control_System")
# 获取对象节点
self.objects = self.server.get_objects_node()
# 创建自定义对象
self.create_object_structure()
# 运行标志
self.running = False
0209整理
2026-02-10 10:18:17 +08:00
# 订阅和监控项
self.subscription = None
self.monitored_items = []
# 记录上次值用于检测变化
self._last_values = {}
feeding
2025-11-17 00:05:40 +08:00
def create_object_structure(self):
"""创建OPC UA对象结构"""
# 创建上料斗对象
self.upper = self.objects.add_object(self.namespace, "upper")
self.lower=self.objects.add_object(self.namespace, "lower")
self.sys=self.objects.add_object(self.namespace, "sys")
0209整理
2026-02-10 10:18:17 +08:00
self.mould=self.objects.add_object(self.namespace, "mould")
self.pd=self.objects.add_object(self.namespace, "pd")
feeding
2025-11-17 00:05:40 +08:00
# 创建变量
self.create_variables()
def create_variables(self):
"""创建OPC UA变量"""
0209整理
2026-02-10 10:18:17 +08:00
# 创建变量时显式指定数据类型和初始值
#上料斗
self.upper_weight = self.upper.add_variable(self.namespace, "upper_weight", ua.Variant(0.0, ua.VariantType.Float))
self.upper_is_arch = self.upper.add_variable(self.namespace, "upper_is_arch", ua.Variant(False, ua.VariantType.Boolean))
self.upper_door_closed = self.upper.add_variable(self.namespace, "upper_door_closed", ua.Variant(False, ua.VariantType.Boolean))
self.upper_volume = self.upper.add_variable(self.namespace, "upper_volume", ua.Variant(0.0, ua.VariantType.Float))
self.upper_door_position = self.upper.add_variable(self.namespace, "upper_door_position", ua.Variant(0, ua.VariantType.Int16))
#下料斗
self.lower_weight = self.lower.add_variable(self.namespace, "lower_weight", ua.Variant(0.0, ua.VariantType.Float))
self.lower_is_arch = self.lower.add_variable(self.namespace, "lower_is_arch", ua.Variant(False, ua.VariantType.Boolean))
#模具车
self.mould_finish_weight = self.mould.add_variable(self.namespace, "mould_finish_weight", ua.Variant(0.0, ua.VariantType.Float))
self.mould_need_weight = self.mould.add_variable(self.namespace, "mould_need_weight", ua.Variant(0.0, ua.VariantType.Float))
self.mould_frequency = self.mould.add_variable(self.namespace, "mould_frequency", ua.Variant(230, ua.VariantType.Int32))
self.mould_vibrate_status = self.mould.add_variable(self.namespace, "mould_vibrate_status", ua.Variant(False, ua.VariantType.Boolean))
self.feed_status = self.mould.add_variable(self.namespace, "feed_status", ua.Variant(0, ua.VariantType.Int16))
self.pd_data=self.pd.add_variable(self.namespace, "pd_data", ua.Variant("", ua.VariantType.String))
# 在创建变量后立即设置可写权限（不需要等待服务器启动）
self.upper_weight.set_writable(True)
self.lower_weight.set_writable(True)
self.upper_is_arch.set_writable(True)
self.upper_door_closed.set_writable(True)
self.upper_volume.set_writable(True)
self.upper_door_position.set_writable(True)
self.lower_is_arch.set_writable(True)
self.mould_finish_weight.set_writable(True)
self.mould_need_weight.set_writable(True)
self.mould_frequency.set_writable(True)
self.mould_vibrate_status.set_writable(True)
self.feed_status.set_writable(True)
self.pd_data.set_writable(True)
print("[变量创建] 变量创建完成，AccessLevel权限已设置")
# 验证并打印当前的AccessLevel属性
# try:
# al = self.upper_weight.get_attribute(ua.AttributeIds.AccessLevel)
# ual = self.upper_weight.get_attribute(ua.AttributeIds.UserAccessLevel)
# print(f"[变量创建] upper_weight AccessLevel: {al.Value.Value}, UserAccessLevel: {ual.Value.Value}")
# al2 = self.lower_weight.get_attribute(ua.AttributeIds.AccessLevel)
# ual2 = self.lower_weight.get_attribute(ua.AttributeIds.UserAccessLevel)
# print(f"[变量创建] lower_weight AccessLevel: {al2.Value.Value}, UserAccessLevel: {ual2.Value.Value}")
# except Exception as e:
# print(f"[变量创建] 获取权限属性失败: {e}")
def setup_variable_permissions(self):
"""设置变量权限 - 在服务器启动后调用"""
feeding
2025-11-17 00:05:40 +08:00
try:
0209整理
2026-02-10 10:18:17 +08:00
# 重新设置变量为可写，确保权限生效
self.upper_weight.set_writable(True)
self.lower_weight.set_writable(True)
print("[权限设置] 变量权限已重新设置")
# 验证权限
try:
al = self.upper_weight.get_attribute(ua.AttributeIds.AccessLevel)
ual = self.upper_weight.get_attribute(ua.AttributeIds.UserAccessLevel)
print(f"[权限设置] upper_weight AccessLevel: {al.Value.Value}, UserAccessLevel: {ual.Value.Value}")
except Exception as e:
print(f"[权限设置] 验证失败: {e}")
feeding
2025-11-17 00:05:40 +08:00
except Exception as e:
0209整理
2026-02-10 10:18:17 +08:00
print(f"[权限设置] 设置权限失败: {e}")
print("[权限设置] 尝试强制设置...")
# def setup_state_listeners(self):
# """设置状态监听器 - 事件驱动更新"""
# if hasattr(self.state, 'state_updated'):
# self.state.state_updated.connect(self.on_state_changed)
# print("状态监听器已设置 - 事件驱动模式")
# def on_state_changed(self, property_name, value):
# """状态变化时的回调函数"""
# try:
# # 根据属性名更新对应的OPC UA变量
# if property_name == "upper_weight":
# self.upper_weight.set_value(value)
# elif property_name == "lower_weight":
# self.lower_weight.set_value(value)
# # 可以在这里添加更多状态映射
# print(f"状态更新: {property_name} = {value}")
# except Exception as e:
# print(f"状态更新错误: {e}")
feeding
2025-11-17 00:05:40 +08:00
def start(self):
"""启动服务器"""
try:
self.server.start()
self.running = True
print(f"服务器端点: opc.tcp://0.0.0.0:4840/freeopcua/server/")
0209整理
2026-02-10 10:18:17 +08:00
print("=" * 60)
# 【关键修复】在设置监听器之前，先设置变量权限
# 这确保 AccessLevel 属性在客户端写入前已正确设置
# self.setup_variable_permissions()
print("=" * 60)
# 设置客户端写入监听器
# self.setup_write_listeners()
print("=" * 60)
feeding
2025-11-17 00:05:40 +08:00
# 初始化当前值
0209整理
2026-02-10 10:18:17 +08:00
# if self.state:
# self.upper_weight.set_value(self.state._upper_weight)
# self.lower_weight.set_value(self.state._lower_weight)
# print("已同步初始状态值")
feeding
2025-11-17 00:05:40 +08:00
# 设置状态监听器 - 关键步骤！
0209整理
2026-02-10 10:18:17 +08:00
# self.setup_state_listeners()
feeding
2025-11-17 00:05:40 +08:00
# # 只有在没有状态系统时才使用模拟线程
# if not self.state:
# print("使用模拟数据模式")
# self.simulation_thread = threading.Thread(target=self.simulate_data)
# self.simulation_thread.daemon = True
# self.simulation_thread.start()
except Exception as e:
print(f"启动服务器失败: {e}")
def stop(self):
"""停止服务器"""
0209整理
2026-02-10 10:18:17 +08:00
# 移除监听器
# self.remove_write_listeners()
feeding
2025-11-17 00:05:40 +08:00
self.running = False
self.server.stop()
print("OPC UA服务器已停止")
# 断开状态监听器
0209整理
2026-02-10 10:18:17 +08:00
# if hasattr(self.state, 'state_updated'):
# try:
# self.state.state_updated.disconnect(self.on_state_changed)
# except:
# pass
feeding
2025-11-17 00:05:40 +08:00
def main():
"""主函数"""
# 创建系统状态实例
0209整理
2026-02-10 10:18:17 +08:00
# state = SystemState()
feeding
2025-11-17 00:05:40 +08:00
# 创建并启动服务器
server = SimpleOPCUAServer(
endpoint="opc.tcp://0.0.0.0:4840/freeopcua/server/",
name="工业自动化 OPC UA 服务器"
)
try:
0209整理
2026-02-10 10:18:17 +08:00
server.start()
feeding
2025-11-17 00:05:40 +08:00
print("服务器正在运行，按 Ctrl+C 停止...")
# 保持服务器运行
while True:
time.sleep(1)
except KeyboardInterrupt:
print("\n正在停止服务器...")
server.stop()
except Exception as e:
print(f"服务器运行错误: {e}")
server.stop()
if __name__ == "__main__":
main()
Reference in New Issue Copy Permalink