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Not on the hour

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AndyH
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Not on the hour

Post by AndyH » Mon 17 Jan 2011 6:55 pm

Hi, using the latest version of Cumulus Beta and have a La Crosse WS2350 which I have set to 5 minute data log intervals. These intervals have started to occur at 00:04, 00:09, 00:14, 00:19, 0024 etc hours rather than 00:00, 00:05, 00:10, 00:15, 00:20, 00:25 etc.

Now, although this isn't a problem the OCD in me wants to correct this! ;)

Any thoughts?

I know the data logging interval is controlled through (whisper it) Heavy Weather, but I'm sure I read somewhere that Cumulus rounds this to 00:00, 00:05 etc.

Regards
Andy.

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steve
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Re: Not on the hour

Post by steve » Mon 17 Jan 2011 7:12 pm

While Cumulus is running, and hence in control of its own logging time, entries are logged when the number of minutes past the hour is a multiple of the logging interval (e.g. 00:00, 00:05 etc, as you suggest).

When it downloads data from the La Crosse logger when it starts up, the station tells it the timestamp of the latest entry, and the interval for each entry. So it works backwards calculating the actual timestamps for each entry. It doesn't do any rounding, it just uses the times that the station gives it. You should be able to see the times logged in the diags file.

So I'm guessing that the entries you're referring to came from the logger.
Steve

AndyH
Posts: 51
Joined: Thu 16 Sep 2010 8:34 am
Weather Station: La Crosse 2350
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Location: Reigate, Surrey, UK
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Re: Not on the hour

Post by AndyH » Mon 17 Jan 2011 7:37 pm

Yes, quite right! On closer examination of the Jan11log.txt file I can see when I started Cumulus and these times are on the hour etc.

i.e
17/01/11,16:29,6.1,94,5.7,0.0,0.0,0,0.0,19.2,1014.5,1473.7,18.9,56,0.0,6.1,6.1,0.0,0,0.00,0.00,5.0,0,0.0
17/01/11,16:34,6.1,94,5.7,0.0,0.0,0,0.0,19.2,1014.5,1473.7,18.9,56,0.0,6.1,6.1,0.0,0,0.00,0.00,5.0,0,0.0
17/01/11,16:40,6.1,94,5.2,0.0,0.0,0,0.0,19.2,1014.8,1473.7,19.2,56,0.0,6.1,6.1,0.0,0,0.00,0.00,5.0,0,0.0
17/01/11,16:45,6.1,94,5.2,0.0,0.0,0,0.0,19.2,1014.8,1473.7,19.4,55,0.0,6.1,6.1,0.0,0,0.00,0.00,5.0,0,0.0

Therefore, do I assume it is some messing around in Heavy Weather that I need to do to get the data logger working on the hour?

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steve
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Re: Not on the hour

Post by steve » Mon 17 Jan 2011 8:17 pm

It's possible that you can get the logger to log on the hour (etc) somehow. I don't really know whether it's designed so that you're able to do that or not. If you download the logger data with HeavyWeather, do the timestamps always come out on the hour?
Steve

AndyH
Posts: 51
Joined: Thu 16 Sep 2010 8:34 am
Weather Station: La Crosse 2350
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Re: Not on the hour

Post by AndyH » Thu 03 Feb 2011 8:29 pm

Thank you for your help and sorry for the delay in replying. I think the only way to change the settings when Cumulus is not running is to use HeavyWeather, which is a shame as I had hoped never to need this again. I'll work on a way around this though!!

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