Does SDK support the "refresh"?

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sunny
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Joined: 12 Feb 2015, 11:14

Does SDK support the "refresh"?

Post by sunny »

Dear all,

We are testing the evaluation version of the C++ OPC UA SDK and we are trying to get Data Change Notifications from a series of nodes.
And we want a c++ UA client which can do "refresh" as OPC Classic-DA client when there is no changes in server.

So my questions are:
1. Does the OPC UA protocol support the "refresh" as Classic-DA client?
2. If c++ SDK supports "refresh", how to do it, coudle you give me an example for it?

Thank so much in advance,
Sunny.

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Support Team
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Joined: 18 Mar 2011, 15:09

Re: Does SDK support the "refresh"?

Post by Support Team »

Hi,

the feature that is close to what the DA-Refresh was doing is the UA-ResendData. However the ResendData will provide last changed data only, hence is little different than the DA-Refresh providing all data regardless of changed or not. Same-Same but Different.
Best regards
Unified Automation Support Team

sunny
Sr. Member
Sr. Member
Posts: 19
Joined: 12 Feb 2015, 11:14

Re: Does SDK support the "refresh"?

Post by sunny »

Dear Support Team,
Thank you very much for prompt reply.
Really appreciate it and I should consider some better approach.

Thanks a lot.

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