Professional OPC
Development Tools

logos

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.

× If you are developing in .NET, but are using the OPC-UA (OPC Unified Architecture), please post in the QuickOPC-UA category instead.

Issue while retrieving data from OPC DA

More
16 Dec 2019 15:35 #8083 by Mohammed
Hey,

In some cases OPC DA return null values and types with quality as (DeviceFailure LimitOk (12)), but when i'm cheking with Matrikon value is not null.

Example :

03-DX-4997-5-N/JK1/EV.SQ, NullValue, DeviceFailure LimitOk (12), 12/16/2019 4:08:45 PM, NullType

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

Moderators: support
Time to create page: 0.041 seconds