Hello everyone,
I have a problem with the logging time for VRM! I set it at logging each 30 minutes, but when I download the data I find that at times I have 42 log per hour!
how to fix this ?
@NMLH How is the device connected to the internet and how reliable/stable is the connection? What firmware version and which GX device?
It is connected via a router containing a SIM Card, connection is not reliable it is off-grid in a rural area.
the firmware version is the V3.7~54 and it is a Cerbo GX.
The values are not only logged “on interval”, they are also logged “on change” and “on event”.
So if some setting value is changing or some important events are triggered, Cerbo is forcing a log/upload of all values at that moment.
Probably you have something that it’s updated at about 1 change per minute or similar.
Do you have some NodeRed flows or additional scripts installed?
No, I don’t use Nodered, I only have a script that helps me download a batch of performance reports and I run it once a month, it definitely doesn’t coincide with the dates where I find this logging behavior
After analyzing the data, I noticed that this logging behavior only occurs when SOC reaches 100%
At that moment some variables must be reset so that’s an event that must be logged by design… 
Although, 42 events of 100% SOC per hour is quite strange…
I believe that you are among very few that want a such wide (30 min) logging interval…
Most want a near minute or even less if possible interval.
Yes lol and for a reason, we have some sites that are completely off line and I don’t want the sd card to be filled with that amount of data!
what would you recommend checking ?
The data packet for a log entry is up to 2K. So less than a data page for an SD card.
A simple math, even for a 4K write/event, is giving you about 3GB of writes per year.
Even the worst SD cards have an endurance of at least 1000 complete cycles (cycle = how many times you write the entire capacity).
So don’t worry… 2000 writes per day for an SD card is almost nothing nowadays… It will last for years.