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ruudverheijden / node-p1-reader

Node.js package for reading and parsing data from the P1 port of a Dutch or Belgian Smart Meter.
MIT License
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Gas meters may be connected to ports 2, 3 or 4 #10

Closed leonboot closed 6 years ago

leonboot commented 6 years ago

The code assumes the gas meter is always connected to port 1. My gas meter was recently replaced and the replacement meter was connected to port 2. From what I can tell from the DSMR 4.0 spec, a gas meter can be connected to either port 1, 2, 3 or 4. Adding case lines for these ports fixed the Unable to parse line: 0-2:24.1.0 error lines for me.

ruudverheijden commented 6 years ago

Thanks for your PR! The original reason I only implemented port 1 is that for most people the gas meter should be on port 1 and the other ports could be used for other types of meters like water meters. However, according to the spec I don't know how to distinguish what type of meter is connected to a port and what are the available options. As far as I know at least in The Netherlands only Gas meters are attached so I think it's safe to just assume any meter connected to a port as being a Gas meter. So I will merge your PR.

leonboot commented 6 years ago

@ruudverheijden my old gas meter used to be connected to port 1 as well, I suppose it's like that for 99.99% of the meters. I agree the DSMR spec is quite vague. I do believe only gas meters are connected at present. Maybe the device type 003 indicates it's a gas meter, but that's just a wild guess. Nothing concrete about that in the specs.

Anyway, thanks for merging! :)