Professional OPC
Development Tools

logos

lupa

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.

  1. Forum
  3. Discussions
  5. QuickOPC-UA in .NET
  7. Reading, Writing, Subscriptions
  9. Read OPC UA variables takes 30% more CPU Load!

Read OPC UA variables takes 30% more CPU Load!

More
17 Oct 2019 14:32 #7839 by support
Replied by support on topic Read OPC UA variables takes 30% more CPU Load!
Hello.

Instead of calling the Reads in a loop, use a single call to ReadMultiple.

More information:
- opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...%20instead%20of%20looping.html
- opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...20nodes%20or%20attributes.html

Best regards

Please Log in or Create an account to join the conversation.

More
17 Oct 2019 12:33 - 17 Oct 2019 12:35 #7837 by Moien
Read OPC UA variables takes 30% more CPU Load! was created by Moien
Dear all,

I am trying to read some OPC Variables from the OPC Server. They are mainly grouped in four different nodes. In one node I just have an array with "double word" entries. In the other three nodes, I got different single variables. I try to read these variables making two objects of OPCUA Client, one for the node with the array (from PLC) and the other client for the other three nodes. My "ReadItemVQT" function (as attached to this message) increases 30% the CPU load!! Can someone help me how to modify my function in order to decrease the CPU load?

Regards
Moien
Attachments:
Last edit: 17 Oct 2019 12:35 by Moien.

Please Log in or Create an account to join the conversation.

Moderators: support
  1. Forum
  3. Discussions
  5. QuickOPC-UA in .NET
  7. Reading, Writing, Subscriptions
  9. Read OPC UA variables takes 30% more CPU Load!
Time to create page: 0.044 seconds