Current power with sign?

[LuFo27]

Hello!
In object objName 1-0:15.7.0*255 the current power is shown.
If I generate more power with my PV than I use, I cannot tell.
How can I manage to show the current power with a sign?

[coolchip]

Thats curious. I've also own a PV system and I get a negative sign. Do you use the SML protocol?

[LuFo27]

yes, i use sml protocol. Perhaps depending on the meter used?

[rschueler]

I have the same problem and found following information:

https://www.mail-archive.com/[email protected]/msg02161.html
It says, that there is a bit in message 1.8.0 which indicates the sign of message 15.7.0 value.

But I don´t have a clue how to access this bit or maybe it is not even parsed and exported to the json object.

[coolchip]

You can put the node in Debug-Mode and send the data to the guy, who wrotes this:
https://github.com/Apollon77/smartmeter-obis
My node is based on this module.

[StofLE]

Same problem :-(
Interested in reading the sign (direction) of power.

@coolchip: I activated the debug mode. But where is the output?
Edit: found it: syslog. :-)
I would like to send it to Apollon77.

Stefan

[jaeger-audiodesign]

Did anyone find a solution for this? The smart meter which my father has, already only has the 15.7. with the energy without a sign.