feeding

opc/opcua_client_test.py

@@ -0,0 +1,158 @@
+#!/usr/bin/env python3
+"""
+OPC UA 客户端测试脚本
+用于连接和测试 OPC UA 服务器
+"""
+
+from opcua import Client
+import time
+import sys
+
+class OPCUAClientTest:
+    def __init__(self, server_url="opc.tcp://localhost:4840/zjsh_feed/server/"):
+        """
+        初始化 OPC UA 客户端
+        
+        Args:
+            server_url: 服务器URL地址
+        """
+        self.client = Client(server_url)
+        self.connected = False
+        
+    def connect(self):
+        """连接到服务器"""
+        try:
+            self.client.connect()
+            self.connected = True
+            print(f"成功连接到 OPC UA 服务器: {self.client.server_url}")
+            return True
+        except Exception as e:
+            print(f"连接服务器失败: {e}")
+            return False
+            
+    def disconnect(self):
+        """断开连接"""
+        if self.connected:
+            self.client.disconnect()
+            self.connected = False
+            print("已断开与 OPC UA 服务器的连接")
+            
+    def browse_nodes(self):
+        """浏览服务器节点结构"""
+        if not self.connected:
+            print("请先连接到服务器")
+            return
+            
+        try:
+            # 获取根节点
+            root = self.client.get_root_node()
+            print(f"根节点: {root}")
+            
+            # 获取对象节点
+            objects = self.client.get_objects_node()
+            print(f"对象节点: {objects}")
+            
+            # 浏览 IndustrialDevice 节点
+            upper_device = objects.get_child("2:upper")
+            print(f"\n工业设备节点: {upper_device}")
+            
+            # 获取传感器节点
+            lower_device = objects.get_child("2:lower")
+            print(f"传感器节点: {lower_device}")
+            
+            
+            print(f"温度传感器: {upper_device}")
+            print(f"压力传感器: {lower_device}")
+            
+            # 获取变量值
+            print("\n=== 当前传感器数据 ===")
+            self.read_sensor_values(upper_device, lower_device)
+            
+        except Exception as e:
+            print(f"浏览节点时出错: {e}")
+            
+    def read_sensor_values(self, upper_device, lower_device):
+        """读取传感器数值"""
+        try:
+            # 读取温度
+            temp_value = upper_device.get_child("2:upper_weight").get_value()
+            temp_unit = upper_device.get_child("2:lower_weight").get_value()
+            print(f"温度: {temp_value} {temp_unit}")
+            
+            
+        except Exception as e:
+            print(f"读取传感器数据时出错: {e}")
+            
+    def monitor_data(self, duration=30):
+        """监控数据变化"""
+        if not self.connected:
+            print("请先连接到服务器")
+            return
+            
+        print(f"\n开始监控数据变化，持续 {duration} 秒...")
+        
+        try:
+            # 获取传感器节点
+            objects = self.client.get_objects_node()
+            upper_device = objects.get_child("2:upper")
+            lower_device = objects.get_child("2:lower")
+          
+            
+    
+            
+            start_time = time.time()
+            while time.time() - start_time < duration:
+                print(f"\n--- {time.strftime('%H:%M:%S')} ---")
+                self.read_sensor_values(upper_device, lower_device)
+                time.sleep(5)  # 每5秒读取一次
+                
+        except KeyboardInterrupt:
+            print("\n监控被用户中断")
+        except Exception as e:
+            print(f"监控数据时出错: {e}")
+            
+  
+
+def main():
+    """主函数"""
+    # 创建客户端
+    client = OPCUAClientTest("opc.tcp://localhost:4840/zjsh_feed/server/")
+    
+    try:
+        # 连接到服务器
+        if not client.connect():
+            return
+            
+        # 浏览节点结构
+        client.browse_nodes()
+        
+        # 监控数据变化
+        client.monitor_data(duration=30)
+        
+        # 测试写入数据
+        # client.write_test_data()
+        
+        # 继续监控
+        print("\n继续监控数据...")
+        client.monitor_data(duration=15)
+        
+    except KeyboardInterrupt:
+        print("\n客户端被用户中断")
+    finally:
+        # 断开连接
+        client.disconnect()
+
+
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        # 支持自定义服务器地址
+        server_url = sys.argv[1]
+        client = OPCUAClientTest(server_url)
+    else:
+        client = OPCUAClientTest()
+        
+    try:
+        main()
+    except Exception as e:
+        print(f"客户端运行错误: {e}")
+        sys.exit(1)