Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
sp_Search Search
Advanced Search
Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Search Search
Go to Bottom
No permission to create posts
sp_Feed Topic RSS sp_TopicIcon
OPC UA Browser 5.0.0-173 shows warning message when subscribing to EventNode
February 14, 2024
9:53, EET
Avatar
rocket science
Member
Members
Forum Posts: 77
Member Since:
March 16, 2017
sp_UserOfflineSmall Offline
Go to Top
1sp_Permalink sp_Print

Hi,

when I open the context menu in the Browser (which is connected to the simulation server) on the Node ‘Objects/MyObjects’/MyDevice/MyLevelAlarm’ (which should basically be an EventNode) and select ‘Monitor Events’, an error message is shown which says ‘The Node does not support subscribing to Events – Do you want to add the Node to Event View anyway’

If I then select OK, the MyLevelAlarm is shown in the EventView and also the Events are coming in.

With previous versions of the Browser I could not remember such a warning. Is this intended to be so?

February 14, 2024
10:42, EET
Avatar
Matti Siponen
Moderator
Members

Moderators
Forum Posts: 321
Member Since:
February 11, 2020
sp_UserOfflineSmall Offline
Go to Top
2sp_Permalink sp_Print

Hello,

The value of the EventNotifier Attribute of MyLevelAlarm Object Node is None, so Browser is asking the user to confirm whether or not they wish to select such Node for monitoring Events. In the case of MyLevelAlarm, monitoring the Events will work, but typically it wouldn’t work for a Node with None as the value of the EventNotifier Attribute.

Therefore, this confirmation dialog appearing is intentional in newer versions of Browser. Similar confirmation dialogs appear in other situations where the selected Node doesn’t seem to be suitable for the operation, such as attempting to read Event history from an Object without HistoryRead option in its EventNotifier Attribute.

In this particular case, the correct Node to monitor for Events would be the MyDevice Node (nsu=http://www.prosysopc.com/OPCUA/SampleAddressSpace;s=MyDevice), though it does report the exact same Events that the MyLevelAlarm Node does. Receiving Events via MyLevelAlarm is a bug in the Simulation Server.

February 14, 2024
11:34, EET
Avatar
rocket science
Member
Members
Forum Posts: 77
Member Since:
March 16, 2017
sp_UserOfflineSmall Offline
Go to Top
3sp_Permalink sp_Print

understand – thank you for clarification

No permission to create posts
sp_Feed All RSS
Go to top
Forum Timezone: Europe/Helsinki

Most Users Ever Online: 518

Currently Online:
9 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

hbrackel: 135

pramanj: 86

Francesco Zambon: 81

rocket science: 77

Ibrahim: 76

Sabari: 62

kapsl: 57

gjevremovic: 49

Xavier: 43

fred: 41

Member Stats:

Guest Posters: 0

Members: 682

Moderators: 16

Admins: 1

Forum Stats:

Groups: 3

Forums: 15

Topics: 1467

Posts: 6261

Newest Members:

karrimacvitie5, graciela2073, sagarchau, elviralangwell4, Donnavek, Eddiefauth, DonaldPooma, fidelduke938316, Jan-Pfizer, DavidROunc

Moderators: Jouni Aro: 1010, Otso Palonen: 32, Tuomas Hiltunen: 5, Pyry: 1, Petri: 0, Bjarne Boström: 983, Heikki Tahvanainen: 402, Jukka Asikainen: 1, moldzh08: 0, Jimmy Ni: 26, Teppo Uimonen: 21, Markus Johansson: 42, Niklas Nurminen: 0, Matti Siponen: 321, Lusetti: 0, Ari-Pekka Soikkeli: 5

Administrators: admin: 1