Hi ,
Is there any limitation for OPC UA data point read group.
In our project we configured around more than 336666 datapoints are there.
Whenever we are trying to connect via OPC UA browser we are getting memory error.
Its working less than 10K datapoints.
OPC UA Datapoint Limitation
- leoknipp
- Posts:2928
- Joined: Tue Aug 24, 2010 7:28 pm
Re: OPC UA Datapoint Limitation
Can you please describe the "memory error" in detail.
Which of the processes gets a "memory error"?
Do you get WinCC OA log messages refering to the "memory error"?
Which WinCC OA version and operating system is used?
Best Regards
Leopold Knipp
Senior Support Specialist
Which of the processes gets a "memory error"?
Do you get WinCC OA log messages refering to the "memory error"?
Which WinCC OA version and operating system is used?
Best Regards
Leopold Knipp
Senior Support Specialist
- RudiKreiner
- Posts:198
- Joined: Mon May 16, 2011 2:10 pm
Re: OPC UA Datapoint Limitation
This issue appears to be related to this one:
https://portal.etm.at/index.php?option= ... 15&id=6065
Since I was just playing around to see what would happen with very many datapoints, I did not pursue the issue by trying to configure more memory.
Instead I just reduced the number of datapoints in the configuration to the ones that we really needed, which turned out to be less than about 35000.
But maybe the information there can help you too.
https://portal.etm.at/index.php?option= ... 15&id=6065
Since I was just playing around to see what would happen with very many datapoints, I did not pursue the issue by trying to configure more memory.
Instead I just reduced the number of datapoints in the configuration to the ones that we really needed, which turned out to be less than about 35000.
But maybe the information there can help you too.