Online Forums
Technical support is provided through Support Forums below. Anybody can view them; you need to Register/Login to our site (see links in upper right corner) in order to Post questions. You do not have to be a licensed user of our product.
Please read Rules for forum posts before reporting your issue or asking a question. OPC Labs team is actively monitoring the forums, and replies as soon as possible. Various technical information can also be found in our Knowledge Base. For your convenience, we have also assembled a Frequently Asked Questions page.
Do not use the Contact page for technical issues.
×
The Connectivity Explorer application allows you to navigate through hierarchy of OPC Data Access and OPC Unified Architecture servers and data nodes. You can subscribe to data changes, and view the results live.
Selected data can be transferred to Excel, where it continues to stay subscribed, giving cell values that are dynamically updated with live OPC data.
Selected data can be transferred to Excel, where it continues to stay subscribed, giving cell values that are dynamically updated with live OPC data.
Access to Server is possible - but no values will be updated - Credentials?
04 Jan 2024 16:27 #12507
by support
Replied by support on topic Access to Server is possible - but no values will be updated - Credentials?
Hello.
When you wrote about certificates and username/password, I got an impression that you were using OPC UA (Unified Architecture). But, your screenshot indicates that you are using OPC DA (COM/DCOM based). My answer about endpoint and User Identity applied to OPC UA (and is illustrated on the picture below). Certificate are not used, however, in OPC DA. And for username/password, you would have to set up a Windows account for that user.
The Point Editor has two panes: Tree view (left), and List view (right). You can only do "Add Live Row" for the item you have selected in the list view. If, for example, you want to add a row for the "ANA1" item, you need to select its *parent* in the tree view first, and then select "ANA1" in the list view, and press "Add Live Row".
What you have done is that you have selected the OPC item in the tree view and then selected one of its Properties (probably the Value property) in the list view. *Do not do that*. The Properties are not the OPC items themselves; and they have no automatic update functionality, which explains why you have to do the Read repeatedly.
Regards
When you wrote about certificates and username/password, I got an impression that you were using OPC UA (Unified Architecture). But, your screenshot indicates that you are using OPC DA (COM/DCOM based). My answer about endpoint and User Identity applied to OPC UA (and is illustrated on the picture below). Certificate are not used, however, in OPC DA. And for username/password, you would have to set up a Windows account for that user.
The Point Editor has two panes: Tree view (left), and List view (right). You can only do "Add Live Row" for the item you have selected in the list view. If, for example, you want to add a row for the "ANA1" item, you need to select its *parent* in the tree view first, and then select "ANA1" in the list view, and press "Add Live Row".
What you have done is that you have selected the OPC item in the tree view and then selected one of its Properties (probably the Value property) in the list view. *Do not do that*. The Properties are not the OPC items themselves; and they have no automatic update functionality, which explains why you have to do the Read repeatedly.
Regards
Attachments:
Please Log in or Create an account to join the conversation.
Moderators: support
Time to create page: 0.057 seconds