Display graph & data of current day cleared on SB4000TL

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What steps will reproduce the problem?
1. execute ./smatool (arguments don't matter)
2.
3.

What is the expected output? What do you see instead?
All data (graph completely blank) is cleared on the display of the sunnyboy 
4000. After +/- 5min the data is visible again. Some users say there is a peak 
in the graph in sunny explorer

What version of the product are you using? On what operating system?
0.11test on ubuntu 10.04

Please provide any additional information below.
3 users have this problem - all having same config (smatool 0.11 ubuntu - 
SB4000-TL - Firmware 3.01)

Original issue reported on code.google.com by luc.van....@skynet.be on 4 Apr 2011 at 1:26

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i've test smatool one time, but don't try more on this experience, because my 
inverter's display siappear partially, the graph of current day was erased too, 
(data was not cleared, and sunnybeam BT, have a good display)

version try smatool 1.1, my inverter SMA3000HF

Original comment by d.grida...@gmail.com on 16 Apr 2011 at 7:29

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Confirmed with 0.11 on 2x SB5000TL-20 (firmware 3.10).

Original comment by Didier.M...@gmail.com on 19 Apr 2011 at 1:10

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Original comment by stephenb...@gmail.com on 20 Apr 2011 at 5:56

• Changed state: Accepted

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I think this is due to setting inverter date/time
maybe we have to remove this in sma.in file

Original comment by luc.van....@skynet.be on 31 May 2011 at 9:17

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I have the same problem with SB 3000TL

Original comment by collepi...@gmail.com on 9 Jun 2011 at 1:00

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[deleted comment]

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I have the same problem on my 5000TL, except the data does not reappear, the 
day's data has been cleared.

Original comment by ryannath...@hotmail.com on 20 Aug 2011 at 8:45

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It only happened once now I look, the inverter was writing the times at 
xx:xx:44 and now it writes xx:xx:00 since the script made it 'stuff up'

I resynced my whole mysql db and now all the times are xx:xx:00 and no longer 
xx:xx:44

Original comment by ryannath...@hotmail.com on 20 Aug 2011 at 10:39

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just had the same issue popping up. the data is still in memory, the display 
does not display any values anymore, except total power produced.
configuration : ubuntu 11.04 , SMA 5000TL
setting the date messed up the display unit on the box, although the values are 
still in the device.

is there a way to get the display back up?

Original comment by bittenb...@gmail.com on 2 Sep 2011 at 10:05

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Yes, I have found a solution.

On my first sync with a Database the Time offset on the inverter was changed.

After logging in with SunnyExplorer I changed the time offset back to what it 
was on and now it's been working perfectly ever since.

I think it changed it to GMT and I had to change it back to GMT +8, It does NOT 
affect any readings or times from the device like you would assume.

Original comment by ryannath...@hotmail.com on 3 Sep 2011 at 12:47

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I have to confirm, on subsequent smatool runs, it does not clear the display 
anymore.
While I did nothing with sunny explorer, just waited to get new data in the 
display, and reran smatool a few times. since the first run, now the display is 
fine again. 

maybe its an issue when it the first run.

side effect of initialisation.

Original comment by bittenb...@gmail.com on 4 Sep 2011 at 2:06

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well I been running the smatool for some days now, and my display gets cleared, 
especially when I poll infrequently, as in every 3-4 hours. then the display 
goes blank again.

so basically it still breaks the data to the display unit
 trying to login with sunnyexplorer and see if resetting the time offset is a solution

Original comment by kris.bug...@gmail.com on 5 Sep 2011 at 2:51

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small update, after using sunnyexplorer and then smatool again, the display 
returned, and has been ok since. 
even the previous data returned on the display.
Although I noticed in sunnyexplorer a discrepancy in one of the day graphs 
three days ago, where a block of data is missing ( interpolated as a perfect 
slope down, a straight between two points).

so it seems that on init something in the ordering, date is changed, but 
rectified with sunnyexplorer, can this be the problem on an empty database, 
where it does a select range beyond the buffer?

Original comment by bittenb...@gmail.com on 6 Sep 2011 at 7:42

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@bittenb...@gmail.com
there are still some bugs in sunny explorer (1.2.7) The slope you see in the 
graph (straight line between 2 points) is one of them.
You can delete the local data (cache) in sunny explorer to force SE to reread 
the data from the inverter (sometimes a restart of SE is needed)

Original comment by luc.van....@skynet.be on 4 Oct 2011 at 7:57