New user here so excuse me if this has been addressed as I could not find an answer in the Search window. Using MPPT SmartSolar 100/15 device. When looking in the Victron Connect App under the Trend tab, my local time on the X axis shows correctly. However when looking at graph data in the History tab, the bar chart there seems to be way off when looking at daily tabulations. It appears to be doing the 24 hour totals from a different slot than my local midnight to midnight window. Is there a setting that can adjust this? I want to be able to view the daily History in a midnight to midnight window which makes the most sense.
Hi. I suspect your 100/15 is standalone, in which case it should follow the internal algorithm and start a new day sometime well after sundown, but not necessarily right on midnight.
But there is a bug when connected via a GX device, which can tell time. So you’d expect it to be right on midnight. Not on my system though, it starts a new day whenever, although the figures in VRM are ok, the ones from the mppt are not.
Here they are graphed…
While a VRM graph, this is a Custom Widget using values direct from the mppt. In this period they’re showing the day restarting about midDAY, the rising blue line showing solar happening at the end of one day and the start of another. The flat blue parts are nighttime, and they should be zero then. The red ones are a ‘yesterday’ value, if you can get your head around graphing ‘yesterday’, ha!
The weird thing is that the time it changes varies, like it gets earlier by maybe 10 to 15 minutes a day, for every day that passes.
It can be reset to midnight by disconnecting from the batteries at midnight, but then a few weeks later it ends up creeping to where you don’t want it.
I’ve reported this, but so far no result. Disturbing though if your case is the same in a standalone situation, then all the mppts out there could be doing this too…
Thanks for reporting it though, this isn’t something easily spotted, hey.
You are correct, my MPPT is stand alone, no other networking components. From my observation and in reading some of the forums / MPPT manual, i surmise that the 24 hour window the History tab displays is from a sunrise to sunrise 24 hour period (or maybe sunset to sunset - not sure). I wish it was configurable as I would rather it coincide with a human calendar 24 hr cycle which is midnight to midnight. Would like a Victron expert to at least confirm what 24 hour window those bar charts are using to aggregate the totals.
As a further update… It seems that after watching this for a couple days, the App correctly synced its History timeframe to my local time zone. Now I am seeing the 24 hour aggregated totals that correspond to my midnight to midnight 24H cycle.
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