Integration Wasserzähler / Integration Water Metering

[slemke76]

Hallo,

I have an M-Bus Water Mereting installed on my site (https://process.honeywell.com/us/en/products/utilities/water/digital-metering/mbus/falcon-mj-pulse-mbus).

I guess the "OBIS Value Group A = 8: Water" is actually not implemented? Or is this wrong?

I already payed around a bit - with the libmbus tools I get the water consumtion corretly:

`root@raspberrypi:/var/log/vzlogger# mbus-serial-request-data -d -b 2400 /dev/ttyAMA3 1
init_slaves: debug: sending init frame #1
[2024-05-09 21:30:06Z] SEND (005): 10 40 FD 3D 16
[2024-05-09 21:30:06Z] RECV (001): E5
init_slaves: debug: sending init frame #2
[2024-05-09 21:30:06Z] SEND (005): 10 40 FD 3D 16
[2024-05-09 21:30:06Z] SEND (005): 10 5B 01 5C 16
[2024-05-09 21:30:07Z] RECV (087): [...]
mbus_frame_print: Dumping M-Bus frame [type 4, 87 bytes]: [...]

<SlaveInformation>
    <Id>.....</Id>
    <Manufacturer>ELR</Manufacturer>
    <Version>178</Version>
    <ProductName></ProductName>
    <Medium>Water</Medium>
    <AccessNumber>21</AccessNumber>
    <Status>00</Status>
    <Signature>0000</Signature>
</SlaveInformation>

<DataRecord id="0">
    <Function>Instantaneous value</Function>
    <StorageNumber>0</StorageNumber>
    <Unit>Volume (m m^3)</Unit>
    <Value>111717</Value>
    <Timestamp>2024-05-09T21:30:07Z</Timestamp>
</DataRecord>

[...]
`
I tried some configs for vzlogger, but without any success. A encryption key is not needed (see libmbus), but without vzlogger does not start.

"meters": [ { "enabled": true, "allowskip": false, "interval": -1, "aggtime": -1, "aggfixedinterval": false, "protocol": "oms", "device": "/dev/ttyAMA3", "dump_file": "/var/log/vzlogger/dumpfile.log", "baudrate": 2400, "baudrate_read": 2400, "parity": "8n1", "wait_sync": "off", "read_timeout": 60, "baudrate_change_delay": 400, "key": "********************************", "mbus_debug": true, "use_local_time": false } ]

Is there a interest in implementing the whole thing? I would be happy to help, but currently have actually no starting point.
It would be possible to set up access to the system...

Regards,
Sebastian

[r00t-]

i never used mbus so i can't comment much.
the mbus code: https://github.com/volkszaehler/vzlogger/blob/master/src/protocols/MeterOMS.cpp
has lots of debug output, so if you set loglevel to 15 and maybe also mbus_debug in the meter config you should get some output. (you did not include a log, so i assume you did not get any in your attempts do far?)
it seems there's a conversion of mbus-specific indentifiers to OBIS,
so you probably will have to add whatever your meter is sending there:
https://github.com/volkszaehler/vzlogger/blob/master/src/protocols/MeterOMS.cpp#L349

[narc-Ontakac2]

Be aware that our deb packages are unfortunately currently not build with mbus support.

[slemke76]

Hello,

so i assume you did not get any in your attempts do far?

Yes, I didn´t get anything so far.
I will take a closer look the next days - actually it is unclear to me, if the code is generally compatible with my meter.
E.g. I do not need a key for communication.

Be aware that our deb packages are unfortunately currently not build with mbus support.

Thanks for the hint - I compiled vzlogger on my own, "oms" is listed as supported protocol type.

Sebastian