Hi to all!
in my metern system whit raspberry and modbus power meter type SDM120 the readings on the chart often mark the value zero, See the image to link http://www.b12web.it/loggyb/adv/metern.png.
Someone tell me why?
Thanks,
F.
metern value go to zero
Re: metern value go to zero
Because there is no difference between your 5' samples
Re: metern value go to zero
Thanks! 
I understand, but you can avoid it will be represented in this way?
Thanks,
P.

I understand, but you can avoid it will be represented in this way?
Thanks,
P.
Re: metern value go to zero
How would you represent a meter that doesn't increase ? 
The same thing happen before 6AM on your example, that is the way it work. The problem is from your com app, not from meterN.
What do you use to read your SDM ?

The same thing happen before 6AM on your example, that is the way it work. The problem is from your com app, not from meterN.
What do you use to read your SDM ?
Re: metern value go to zero
To read the sdm use a USB - RS485 converter mounted on a raspberry . I wish that peak down does not have displayed . I wish it were a uniform look .
It's possible?
It's possible?
Re: metern value go to zero
Please, past your csv values where it happen. If you directly request sdm120c, then i bet it miss a value.
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