Subscription to node properties changes

[alejandro-zuleta-globant]

I have a server whose address space is populated with a couple of UAObject objects, these objects have multiple UAVariables properties using the has HasProperty reference.

Based on the examples, I think I can use Subscription.subscribe_data_change but I have to pass all the property nodes to watch. I would like to simplify the subscription process and just pass the parent object and get notified if any property of the object is changed.

Is there a way to subscribe to an object node and get notified whenever any property value related to the object is modified?

[AndreasHeine]

thats not how a OPC UA Subscription (more precise a MonitoredItem) works!

if you want to subscribe all properties of an object you need to browse the object for the references (HasProperty) and pass the a list of nodeids to the subscribe_data_change() method

you can wrap that in your own conveniencefunction and use it as you wish!

[alejandro-zuleta-globant]

Got it, I was getting this wrong. Thank you for your reply.