problems with Log (graphs) with P1 meter

[voyo]

Hi,
I developed plugin, which is reporting values to P1 meter device. Unfortunately, graphs from last 24hours doesn't looks correct at all.
I'm unsure whether it is bug with Domoticz, or Im doing something wrong, need some advice...
Here is graph:

Zrzut ekranu 2024-07-22 161415.png (301.71 KiB) Viewed 641 times

as you see, almost every 5-10 minutes there are 0 values visible on graph and maximum values are not like these stored in db. While I'm updating correct values with my plugin, also I checked - in database I see correct values for this time period:

sqlite> select * from MultiMeter where DeviceRowID=1791 and date > '2024-07-22 13:150:00' limit 10;
+-------------+--------+---------+--------+--------+--------+--------+---------------------+-------+
| DeviceRowID | Value1 | Value2 | Value3 | Value4 | Value5 | Value6 | Date | Price |
+-------------+--------+---------+--------+--------+--------+--------+---------------------+-------+
| 1791 | 0 | 1568710 | 0 | 5946 | 0 | 0 | 2024-07-22 13:15:00 | 0.0 |
| 1791 | 0 | 1568790 | 0 | 5901 | 0 | 0 | 2024-07-22 13:20:00 | 0.0 |
| 1791 | 0 | 1568870 | 0 | 5824 | 0 | 0 | 2024-07-22 13:25:00 | 0.0 |
| 1791 | 0 | 1568870 | 0 | 5764 | 0 | 0 | 2024-07-22 13:30:00 | 0.0 |
| 1791 | 0 | 1568950 | 0 | 5702 | 0 | 0 | 2024-07-22 13:35:01 | 0.0 |
| 1791 | 0 | 1569030 | 0 | 5665 | 0 | 0 | 2024-07-22 13:40:00 | 0.0 |
| 1791 | 0 | 1569030 | 0 | 5642 | 0 | 0 | 2024-07-22 13:45:00 | 0.0 |
| 1791 | 0 | 1569110 | 0 | 5610 | 0 | 0 | 2024-07-22 13:50:00 | 0.0 |
| 1791 | 0 | 1569110 | 0 | 5591 | 0 | 0 | 2024-07-22 13:55:01 | 0.0 |
| 1791 | 0 | 1569180 | 0 | 5556 | 0 | 0 | 2024-07-22 14:00:00 | 0.0 |
+-------------+--------+---------+--------+--------+--------+--------+---------------------+-------+


And this is definition of this device :
sqlite> select * from devicestatus where id=1791;
ID|HardwareID|DeviceID|Unit|Name|Used|Type|SubType|SwitchType|Favorite|SignalLevel|BatteryLevel|nValue|sValue|LastUpdate|Order|AddjValue|AddjMulti|AddjValue2|Ad djMulti2|StrParam1|StrParam2|LastLevel|Protected|CustomImage|Description|Options|Color|OrgHardwareID
1791|35|00230056|86|Sofar - Total PV Energy|1|250|1|0|1|12|255|1|0;0;1570140;0;0;2355|2024-07-22 16:15:53|1791|0.0|1.0|0.0|1.0|||0|0|0|Total PV power|||0


and this is how Im updating inside plugin:
Devices[self.ID].Update(nValue=1,sValue=str(USAGE1+';'+USAGE2+';'+RETURN1+';'+RETURN2+';'+CONS+';'+PROD) )


What Im worrying about - the interval of updates, the time that plugin consumes to update all its devices ,takes slightly more than 1minute.
Other plugins that Im using has no issues with updating everything in < 10s (one interval cycle).
Im not sure if this is a problem.
I checked , and same behaviour (broken graph) is happening with official releases of Domoticz 2023.2 , 2024.4 and latest 2024.7
Maybe Its not Domoticz fault, but Im looking at wrong table, or updating the values in somehow wrong way ? :/
Any comments, advices ?

[waltervl]

Check the P1 update API command in the wiki to understand what you are doing. Python plugin framework uses the same principle. It seems that you are sending watt= 0 at some time.
Also make sure you are not mixing up Wh and W values.

[voyo]

here is my update command , running in plugin:

Devices[self.ID].Update(nValue=1,sValue=str(USAGE1+';'+USAGE2+';'+RETURN1+';'+RETURN2+';'+CONS+';'+PROD) )

As far as I can see it is not much different to API call ( and yes, I've read the friendly manual). It is running every 10s interval (or rather way less, like 50s - 1'10s , because it cannot copy on time with all updates).
But still, MAX value visible on graph it far less than any update value on 'RETURN1' , and on graphs we see 0 values - which are not present in database at all (unless Im checking wrong table, possible ? )
It looks to me, like on graph I see some averaged points , which would be explained if Im not able to run Update() every 10 seconds interval . Im not sure if this is the case ??
And I enabled some debugs - every of my Update() is called with some values greater than 1000 , which makes W vs kW differences are completely irrelevant.

[Kedi]

Could it not be that within a 1 minute interval there is no data send at all, so Domoticz assumes zero's?

[waltervl]

If no data is sent, Domoticz assumes the last sent value for the 5 min view on the graph.
The green line is coming from one of the 2 values ';'+CONS+';'+PROD . So it seems you are sending 0 for both on some times.
The graph is updated every 5 min. The device widget should react instantly.

For the rest I have no idea what the internals of P1 update command is doing.