FIWA or FINA?

Hi! It's me... again! :D

 

A simples question (I think): which is better to use, FIWA or FINA? The data I'm sending is aggregated kWh.

 

PS: In the same chain process, can I use both FIWA and FINA?

 

Edit: Does it have anything to do with the graphics? The 2 feeds are recording the same data (one using FIWA and the other with FINA). When I zoom in, the 2 graphs are equal, but when I zoom out we can see some differences.

TrystanLea's picture

Re: FIWA or FINA?

Hello Bruno

Fiwa is fixed interval with averaging

Fina is fixed interval no averaging

For accumulating/aggregated kWh, you dont really want averaging, so phpfina is the best option. The averaging is useful for viewing temperature or power data.

Bruno's picture

Re: FIWA or FINA?

Thank you! 

So for logging (log to feed) I should use phpfina. And for the other feeds (range, kwh to power, kwh to kwhd)? Use the same phpfina?

 

Edit: To have graphics with different time interval, I've decided to upload the same data but with different time interval (in node 1 I'm sending data with 1 minute interval. In node 2 with 15 minutes interval, node 3 1 hour interval, node 4 1 day interval).

Now to create a feed in the 15 minutes interval, when I select the phpfiwa engine I got an error (Error: feed could not be created). When I select phpfina it's fine. Is there a limitation or is it a bug?

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