opcua/BareboneClient

# load cvb.opcua
import cvb
import cvb.opcua
 
 
def make_browse_filter():
    # define parameters for browsing
    bd = cvb.opcua.ReferenceDirection.Forward
    relationship = cvb.opcua.ReferenceType.Hierarchical  # relationship to explore
    max_ref = 5000  # max number of references to follow
    # allow subtype of search type
    allow_subtype = cvb.opcua.BrowseSubType.SubTypesIncluded
    # masked based filter for node classes based on bitwise AND of cvb.opcua.NodeClass
    node_class_mask = 0
 
    # combine them in an object
    return cvb.opcua.BrowseFilter.create(bd, relationship, max_ref, allow_subtype, node_class_mask)
 
 
def main():
    # create client (will connect on creation, disconnect at eol)
    client = cvb.opcua.Client.create("opc.tcp://127.0.0.1:4840")
 
    # thats too simple, so lets 'browse' the server objectsfolder
 
    # get node id of root folder
    obj_folder = cvb.opcua.NodeID.create_namespace0(
        cvb.opcua.Namespace0NodeID.OBJECTSFOLDER)
    obj_folder_node = client.node(obj_folder)
 
    # browse on object folder
    browse_result = obj_folder_node.browse(make_browse_filter())
 
    # lets print the children
    for nid in browse_result:
        tmp = client.node(nid)
        print("found node: '" + tmp.display_name + "'")
 
 
if __name__ == "__main__":
    main()