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Which type of communications its better
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Hi i am staring to work whit scada, and i got asked which type of communications its better?
I understand the Synchronous communication, its read the values of point directly from OPC server,
While the Asynchronous communication, implement a cache that have a processes running in a thread whit a callback handler that load the values in the cache.But i need to know in which cases those are better, and what its the best practices to use them.
Thx for the help
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This depends from your use case.
I would suggest
- try a search engine
and - have a look at your (university) library.
Arne
- try a search engine