206 lines
8.5 KiB
Python
206 lines
8.5 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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# 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.Int16))
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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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self.lower_angle = self.lower.add_variable(self.namespace, "lower_angle", ua.Variant(0.0, ua.VariantType.Float))
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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_finish_ratio = self.mould.add_variable(self.namespace, "mould_finish_ratio", 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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self.pd_notify=self.pd.add_variable(self.namespace, "pd_notify", ua.Variant("", ua.VariantType.String))
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self.pd_notify_finish=self.pd.add_variable(self.namespace, "pd_notify_finish", ua.Variant("", ua.VariantType.String))
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self.pd_set_mode=self.pd.add_variable(self.namespace, "set_mode", ua.Variant(0, ua.VariantType.Int16))
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self.pd_set_volume=self.pd.add_variable(self.namespace, "set_volume", ua.Variant("", ua.VariantType.String))
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# 系统对象
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self.sys_set_mode=self.sys.add_variable(self.namespace, "set_mode", ua.Variant(0, ua.VariantType.Int16))
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self.sys_segment_refresh=self.sys.add_variable(self.namespace, "segment_refresh", ua.Variant(0, ua.VariantType.Int16))
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self.sys_pd_refresh=self.sys.add_variable(self.namespace, "pd_refresh", ua.Variant(0, ua.VariantType.Int16))
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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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self.pd_notify.set_writable(True)
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self.pd_notify_finish.set_writable(True)
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self.pd_set_mode.set_writable(True)
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self.pd_set_volume.set_writable(True)
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self.sys_set_mode.set_writable(True)
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self.mould_finish_ratio.set_writable(True)
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self.sys_segment_refresh.set_writable(True)
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self.sys_pd_refresh.set_writable(True)
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self.lower_angle.set_writable(True)
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print("[变量创建] 变量创建完成")
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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() |