[vz-users] configuration to read MT681 / vzlogger webpage shows different values than measured

[Tilman Glötzner]

Hello Mike

many thanks for the advice. I changed it accordingly. But still, the 
values in the plot are inconsistent. The values in the section "Kanäle" 
are partially consistent with the meter, i.e.  the values "Verbrauch" 
and "Gesamt". So 2 kwh were consumed yesterday, and 24 kwh fed into the 
grid. Looking at the plot, the unit  "kw" is incorrect. The unit should 
be "kwh" or "Wh". The values itself seem to be also inconsistent. For 
instance,  at around 5 h in the morning, 1 kwh was taken from the grid 
-- not 5 kwh. The solar cells fed up to 5 kwh into the grid, not 80 kw.

Thanks and best regards

Tilman

On 15.04.21 23:44, Maik Weidemann wrote:
> Hello Tilman,
>
> all values under the identifier 1-0:1.8.x or 1-0:2.8.x are counter, so
> you must chose the type "Zählerstände" for this channels .
>
> Best regards
> Maik
>
>
> Am 15.04.21 um 12:13 schrieb Tilman Glötzner:
>> Dear all
>>
>> We have recently installed a solar panels, a battery (LG RESU-10) and
>> a inverter (SolarEdge SE-7rws). And a new bidirectional energy meter
>> was installed by the electricity provider, i.e. a MT681-D4A52-K0p. I
>> am reading it using an USB-Reader-Writer-Head (USB IR Lesekopf EHZ
>> Lese-Schreib-Kopf Volkszähler Hichi)  bought at ebay. The meter is
>> providing absolute values in Wh.
>>
>> 1) The values transferred to the  logger and  web page seem to be
>> inconsistent (See also screen shot attached). I am suspecting a
>> configuration issue. Can you kindly advise?
>>
>> Here the log from vzlogger:
>>
>> [Apr 15 08:18:07][mtr0] Got 6 new readings from meter:
>> [Apr 15 08:18:07][mtr0] Reading:
>> id=1-0:1.8.0*255/ObisIdentifier:1-0:1.8.0*255 value=33000.00
>> ts=1618471087033
>> [Apr 15 08:18:07][mtr0] Reading:
>> id=1-0:1.8.1*255/ObisIdentifier:1-0:1.8.1*255 value=33000.00
>> ts=1618471087033
>> [Apr 15 08:18:07][mtr0] Reading:
>> id=1-0:1.8.2*255/ObisIdentifier:1-0:1.8.2*255 value=0.00 ts=1618471087033
>> [Apr 15 08:18:07][mtr0] Reading:
>> id=1-0:2.8.0*255/ObisIdentifier:1-0:2.8.0*255 value=168000.00
>> ts=1618471087033
>> [Apr 15 08:18:07][mtr0] Reading:
>> id=1-0:2.8.1*255/ObisIdentifier:1-0:2.8.1*255 value=168000.00
>> ts=1618471087033
>> [Apr 15 08:18:07][mtr0] Reading:
>> id=1-0:2.8.2*255/ObisIdentifier:1-0:2.8.2*255 value=0.00 ts=1618471087033
>>
>> And here the config of vzlogger
>>
>> {
>> "retry" : 3,
>> "daemon": true,
>> "verbosity" : 15,
>> "log" : "/var/log/vzlogger.log",
>>
>> "local" : {
>>          "enabled" : false,
>>          "port" : 8080,
>>          "index" : true,
>>          "timeout" : 30,
>>          "buffer" : 600
>> },
>>
>> "meters" : [
>>          {
>>          "enabled" : true,
>>          "device" : "/dev/ttyUSB0",
>>          "protocol" : "sml",
>>          "parity" : "8N1",
>>          "baudrate" : 9600,
>>          "aggtime" : -1,
>>          "aggfixedinterval" : true,
>>          "channels": [{
>>              "uuid" : "xx",
>>              "middleware" : "http://localhost/middleware.php",
>>              "identifier" : "1-0:2.8.0", /* energy provided to grid */
>>              "aggmode" : "MAX"
>>              }, {
>>              "uuid" : "xx",
>>              "middleware" : "http://localhost/middleware.php",
>>              "identifier" : "1-0:1.8.0", /* energy taken from grid */
>>              "aggmode" : "MAX"
>>              }, {
>>              "uuid" : "xx",
>>              "middleware" : "http://localhost/middleware.php",
>>              "identifier" : "1-0:2.8.0", /* energy provided to grid */
>>              "aggmode" : "MAX"
>>              }, {
>>              "uuid" : "xx",
>>              "middleware" : "http://localhost/middleware.php",
>>              "identifier" : "1-0:1.8.0", /* energy taken from grid */
>>              "aggmode" : "MAX"
>>              }]
>>          }
>>      ]
>> }
>>
>> 2) Would it possible to also log the data from the SolarEdge inverter?
>> The Solar Edge data via Ethernet sending this to a portal. In
>> addition, it can also provide data via RS485 in my understanding.
>>
>> Thanks
>>
>> Tilman
>>
>>
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