FreeOpcUa
subscribe_events error: BadMonitoredItemFilterInvalid
hi,:
I try to subscribe events from opc ua server, and get the following error message:
" The monitored item filter parameter is not valid.(BadMonitoredItemFilterInvalid). "
and my client could not recieve any event from server.
I would be glad, if someone could take the time to give me a short explanation of that.
Example code:
if name == "main": logging.basicConfig(level=logging.WARN) logger = logging.getLogger("KeepAlive") logger.setLevel(logging.DEBUG) client = Client("opc.tcp://localhost:8082/test1/server/") # client = Client("opc.tcp://admin@localhost:4840/freeopcua/server/") #connect using a user try: client.connect() handler = SubHandler() myvar = client.get_node("ns=1;s=t|opc_ua_3") myvar1 = client.get_node("ns=1;s=t|opc_ua_2") sub = client.create_subscription(0, handler) handle = sub.subscribe_data_change([myvar, myvar1]) time.sleep(1) sub.subscribe_events() except Exception as e: print e
