A Rackio extension to add a OPC-UA support
Project description
rackio-opc-ua
A Rackio extension to add a OPC-UA support to a Rackio application
Installation
pip install RackioOPC-UA
Usage
from rackio import Rackio
from rackio_opcua import RackioOPCUA
app = Rackio()
driver = RackioOPCUA(app, 4840)
app.run(8028)
Creating Tree Nodes
In order to create nodes, you can define custom folders, devices and mappings.
folder = driver.define_folder("default")
device = folder.define_device("main")
Mappings allows to bind a OPC-UA object node to a Rackio defined Tag.
device.define_mapping("T1", "write")
device.define_mapping("T3", "read")
write mode allows to read and write from a OPC-UA Client, and read mode allows to read only. By default, the binding timing period is 0.25 seconds. You bypass this by providing the period parameter, in seconds.
device.define_mapping("T1", "read", period=0.5)
You can also define mappings inside folders and can define folders inside folders.
Features to develop
Some OPC-UA features are in development phase suchas.
- Custom Method definitions
- Custom Data Types definitions
- History Query
- Loading configurations form a file (JSON and XML)
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