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