Victron energy Color Control GX Manual page 8

Color Control GX manual [Victron Energy]
Important to know, is that when the microSD card or USB stick is re-inserted, the existing buffer, including its data, is used again. This allows for taking out the microSD card temporarily for whatever reason, but this also
means that when the data file has been uploaded to VRM, it needs to be renamed or removed from the microSD card / USB stick before re-inserting, otherwise the data will be transmitted again, sooner or later,
on-line or off-line.
Because of the aforementioned improvement in sending of backlog data, the data logging is also highly resillient to bad internet connections. Lines of up to 70% permenant packet loss are still sufficient to get the data out,
albeit a bit delayed sometimes.
With a log interval of once per minute, the required storage space roughly amounts to about 25 MB (Megabyte) per month, depending on the amount of products that are connected. So with a 1 GB (Gigabyte) microSD card,
you can store about 3 years of backlog. In other words, any microSD card or USB stick should be sufficient to store the 6 months of data VRM retains.
Should the storage space run out, no more data is logged. This is due to the nature of Sqlite files. Removing data from the Sqlite database doesn't free up usable disk space, and because of internal fragmentation, it's also not
guaranteed that there is enough free internal space.
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The CCGX can be used in combination with the Victron Remote Management (VRM) portal
connected to it and the VRM portal makes the statistics easily accessible.
Since version 1.40, dealing with an absent or intermittent internet connection has changed. Data is sent out via the Internet if it's available, and will fall back to
non-volatile storage when there is a (temporary) Internet outage. The built-in non-volatile storage can contain 48 hours worth of data. To extend this period, one
can insert an microSD card or USB stick, and the CCGX will automatically transfer any data that may reside on the internal storage to it, and will start using this
external memory as backlog buffer. You can see that it's active in the settings menu:
When using this external memory, it will still make use of an active internet connection to send its backlog. That means that even with months worth of backlog,
once the CCGX re-acquires an Internet connection, all of the backlog is sent out. And because of an enhanced algorithm, this takes considerably less time and
traffic than before.
When a CCGX is permanently without Internet, one can choose to upload the backlog buffer manually. First step is to use the GUI (Graphical User Interface) to
eject the storage; don't just take out the SD-card/USB-stick. Then it can be removed from the CCGX and inserted into a computer or laptop, the data file on it
can be uploaded on the VRM Portal with the 'Upload CCGX File' option:
https://www.victronenergy.com/live/ccgx:start
: The CCGX monitors all products
[https://vrm.victronenergy.com/]
21/11/16 19:12