python 配置anaconda python 配置opcua 本地发现服务器

******************************************OPC UA Server*******************************************************

# encoding=utf-8

 import sys
 sys.path.insert(0, "..")import time
from opcua import ua, Server
if __name__ == "__main__":

     # setup our server
     server = Server()
     server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")

     # setup our own namespace, not really necessary but should as spec
     uri = "http://examples.freeopcua.github.io"
     idx = server.register_namespace(uri)

     # get Objects node, this is where we should put our nodes
     objects = server.get_objects_node()

     # populating our address space
     myobj = objects.add_object(idx, "MyObject")
     myvar = myobj.add_variable(idx, "MyVariable", 6.7)
     myvar.set_writable()    # Set MyVariable to be writable by clients

     # starting!
     server.start()
     
     try:
         count = 0
         while True:
             time.sleep(1)
             count += 0.1
             myvar.set_value(count)
     finally:
         #close connection, remove subcsriptions, etc
         server.stop()
  ******************************************OPC UA Client*******************************************************
# encoding=utf-8

 import sys,time
 sys.path.insert(0, "..")
 from opcua import Clientif __name__ == "__main__":
 
    client = Client("opc.tcp://localhost:4840/freeopcua/server/")
     #client = Client("opc.tcp://127.0.0.1:4840/freeopcua/server/")
     #client = Client("opc.tcp://admin@localhost:4840/freeopcua/server/") #connect using a user
     try:
         res = client.connect()

         # Client has a few methods to get proxy to UA nodes that should always be in address space such as Root or Objects
         root = client.get_root_node()
         print("Objects node is: ", root)

         # Node objects have methods to read and write node attributes as well as browse or populate address space
         print("Children of root are: ", root.get_children())

         # get a specific node knowing its node id
         #var = client.get_node(ua.NodeId(1002, 2))
         #var = client.get_node("ns=3;i=2002")
         #print(var)
         #var.get_data_value() # get value of node as a DataValue object
         #var.get_value() # get value of node as a python builtin
         #var.set_value(ua.Variant([23], ua.VariantType.Int64)) #set node value using explicit data type
         #var.set_value(3.9) # set node value using implicit data type

         # Now getting a variable node using its browse path
         while(1):
             myvar = root.get_child(["0:Objects", "2:MyObject", "2:MyVariable"])
             obj = root.get_child(["0:Objects", "2:MyObject"])
             print("myvar is: ", myvar)
             print("myobj is: ", obj)
             
             # Stacked myvar access
             print("myvar is: ", root.get_children()[0].get_children()[1].get_variables()[0].get_value())
             time.sleep(2)

     finally:
         client.disconnect()

KepOPCUA是基于python opc ua开发的UA客户端连接测试工具，目前支持KepServerEX6的UA服务器的测试连接读取，采用订阅的方式获取您想要的数据。