async def task(loop):
url = "opc.tcp://192.168.2.64:4840"
# url = "opc.tcp://localhost:4840/freeopcua/server/"
try:
client = Client(url=url)
client.set_user('test')
client.set_password('test')
# client.set_security_string()
await 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()
_logger.info("Objects node is: %r", root)
# Node objects have methods to read and write node attributes as well as browse or populate address space
_logger.info("Children of root are: %r", await root.get_children())
tree = await browse_nodes(client.get_objects_node())
_logger.info('Node tree: %r', tree)
except Exception:
_logger.exception('error')
finally:
await client.disconnect()
import sys
sys.path.insert(0, "..")
import time
import logging
from IPython import embed
from asyncua import Client
from asyncua import ua
if __name__ == "__main__":
logging.basicConfig(level=logging.WARN)
client = Client("opc.tcp://asyncua.demo-this.com:51210/UA/SampleServer")
try:
client.connect()
root = client.get_root_node()
objects = client.get_objects_node()
struct = client.get_node("ns=2;i=10239")
struct_array = client.get_node("ns=2;i=10323")
before = struct.read_value()
before_array = struct_array.read_value()
client.load_type_definitions(
) # scan server for custom structures and import them
after = struct.read_value()
after_array = struct_array.read_value()
embed()
finally:
client.disconnect()