Access via asyncua Tags on a sImulated MTP700

DeaD_EyE

May 19th, 2025

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import asyncio
import typing
from contextlib import asynccontextmanager
from asyncua import Client
@asynccontextmanager
async def connector(client: Client):
client.session_timeout = 600000
await client.connect()
yield client
await client.disconnect()
async def get_value(hmi_opcua: Client, tag: str) -> typing.Any:
root = hmi_opcua.get_root_node()
tags = await root.get_child(["0:Objects", "1:HmiRuntime", "1:HMI_RT_4", "1:Tags"])
for child in await tags.get_children():
name = (await child.read_browse_name()).Name.split("::")[1]
if name == tag:
return await child.get_value()
raise ValueError(f"Could not find {tag}")
async def main():
async with connector(Client(url="opc.tcp://127.0.0.1:4949")) as client:
for _ in range(10):
print("Tag in position:", await get_value(client, "Tag_in_pos"))
await asyncio.sleep(0.1)
if __name__ == "__main__":
asyncio.run(main())

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