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

[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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