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coolchip / node-red-contrib-smartmeter

Node to provide data from smartmeters
MIT License
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Current power with sign? #32

Open LuFo27 opened 2 years ago

LuFo27 commented 2 years ago

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 commented 2 years ago

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

LuFo27 commented 2 years ago

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

rschueler commented 2 years ago

I have the same problem and found following information:

https://www.mail-archive.com/volkszaehler-dev@demo.volkszaehler.org/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 commented 2 years ago

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 commented 2 years ago

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 commented 1 year ago

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.