PowU does not pulish accumulated power

[paaland]

Describe the bug I've got a PowU connected to an Aiden meter in Norway. I can see in the UI that the accumulated power value reported by the meter change, but it's not reflected in the what's published in mqtt.

To Reproduce Steps to reproduce the behavior:

1. Go to AMS reader web page
2. Open MQTT explorer, examine the meter/import/active/accumulated
3. The value should correspond with that's in the web page
4. It does not

Expected behavior When a new accumulated value is received, it should be published to mqtt as all the other values.

Screenshots

Hardware information:

• Aidon
• Pow-U

Relevant firmware information:

• Version: 2.0.6
• MQTT: yes
• HAN GPIO12
• HAN baud and parity: 2400 8E1
• Temperature sensors: none

Additional context All the other values are published fine, it's just meter/import/active/accumulated that is not updated.

[gskjold]

You will only receive a confirmed accumulated value at the top of the hour (approx ??:00:10). What you are seeing in the GUI is a real time calculated value. This value is mostly correct, but can deviate a bit, both higher and lower, so there is a good chance you will see a small jump in the value when the confirmed reading is received.

[ArnieO]

So the value difference GUI vs MQTT is:

• GUI: Last hourly value from meter + estimated accumulated so far this hour
• MQTT: Last hourly value from meter

[gskjold]

Thanks for the summary, yes, that is correct.

[paaland]

I "lost" a value too. I got a value at 11, then nothing at 12, but I got a value at 13. This cause the "previous" usage value to be reused. I think the whole thing might tie into this bug: https://github.com/gskjold/AmsToMqttBridge/issues/199

[gskjold]

The graph is calculated from usage between successfully received meter readings (only received once every hour), if a reading is missed, the next calculation will be spread across all hours since last successful calculation. In your case, 9.8kwh have been used between 10-12 and was divided over the two hours.

[tronde-ams]

Is this real time accumulated power a special for ESP8266 based units? I have only seen real time values when I power up an ESP32 until it reaches hh:00:10. From then it is only updated once an hour.

No change after 15 min. I reloaded the page before each capture.

[gskjold]

Interesting. I currently run on both ESP32 and ESP8266, both devices have real time update in GUI. Not sure why yours doesnt..

[Isaksson]

Could you please use the DevTools in chrome (F12) and verify on the Network tab that your browser is getting the updated data.

[tronde-ams]

I don't have chrome on my desktop, and I have no inttention to install it either.

I have not seen real time update on any of my ESP32 based units regardless of using Vivaldi or Firefox on two different desktops, or Vivaldi, Firefox or Chrome on android. I have no ESP8266 to test with at the moment.

It does show real time when powered up until first hh:00:10, but not after. My meter is Aidon three phase IT.

I cut power on one unit for a re-start.

Counts steadily from 0

.

Fetches total from meter at 22:00:10

. Then stops counting

[Isaksson]

There is a developer function in Firefox, if you are on Windows you open it with F12. https://developer.mozilla.org/en-US/docs/Tools

That browser also have the network monitor function.

[tronde-ams]

Don't tell me much, I am afraid ;-(

[Isaksson]

And you have to refresh the webpage to see any updates? So between all the screenshots above you had to refresh the webpage?

[tronde-ams]

No, I don't need to.

I did for the first screenshots three days ago to make sure nothing was stuck, but I did not refresh today.

First screenshot here is same as 22:00

Next without refresh is updated with value from meter at 23:00:10

[tronde-ams]

Previous screen shots was from Firefox

This is from Vivaldi. Same accumulated value, but seven minutes later, and different browser.

[tronde-ams]

Firefox on android. Still same value