Which retrieval option will return a value for a tag every 5 seconds?

Which retrieval option will return a value for a tag every 5 seconds?

• A. wwInterval = 5000
• B. wwResolution = 5000
• C. wwFrequency = 5
• D. wwTimeframe = 5

Answer: (B)

The retrieval option that will return a value for a tag every 5 seconds is correctly identified as setting the `wwResolution` parameter to 5000 milliseconds. The term 'resolution' in this context refers to the time granularity of the data retrieval, meaning it defines how frequently the data points are sampled or retrieved from the historian database. By setting `wwResolution` to 5000 milliseconds (or 5 seconds), the system is instructed to sample data at that interval, ensuring that every 5 seconds, the latest available value for the specified tag will be returned. This setting is essential for obtaining timely data updates, particularly in scenarios requiring high-frequency monitoring or data analysis. Other options do not appropriately define this time interval in the context of the AVEVA Historian. For instance, `wwInterval`, `wwFrequency`, and `wwTimeframe` do not have the same specific function as `wwResolution` and could imply different types of attributes or settings within the data retrieval process. Therefore, the correct understanding of `wwResolution` and its appropriate setting is vital for ensuring accurate data retrieval at the specified interval.

The retrieval option that will return a value for a tag every 5 seconds is correctly identified as setting the wwResolution parameter to 5000 milliseconds. The term 'resolution' in this context refers to the time granularity of the data retrieval, meaning it defines how frequently the data points are sampled or retrieved from the historian database.

By setting wwResolution to 5000 milliseconds (or 5 seconds), the system is instructed to sample data at that interval, ensuring that every 5 seconds, the latest available value for the specified tag will be returned. This setting is essential for obtaining timely data updates, particularly in scenarios requiring high-frequency monitoring or data analysis.

Other options do not appropriately define this time interval in the context of the AVEVA Historian. For instance, wwInterval, wwFrequency, and wwTimeframe do not have the same specific function as wwResolution and could imply different types of attributes or settings within the data retrieval process. Therefore, the correct understanding of wwResolution and its appropriate setting is vital for ensuring accurate data retrieval at the specified interval.