Improvment: Get the current power consumption of Compress 7001 Heatpumps

[RaHehl]

My Setup;

Heatpump: Bosch CS7000iAW OR-S & AWMB Inside PV System: Fronius Symo GEN24 10.0 Plus Hybrid Inverter & BYD Battery-Box Premium HVM-11.0 & Fronius Smart Meter 63A-3 Bosch Energy manager running on a Bosch Smart Home Controller 2 https://www.bosch-homecomfort.com/de/de/wohngebaeude/wissen/heizungssteuerung/der-energiemanager/ Connected to the Heatpump via Ethernet and via TCP Modbus to my inverter Wallbox 2x Fronius Wattpilot HOME 11J latest Homeassistant

I would like to have this value inside my HomeAssistant, displayed in the energiemanager app:

that's what i can get via Longpoling without filter in the energie manager api:

log (3).txt

[proddy]

Can you help us find it? https://emsesp.github.io/docs/Troubleshooting/#im-missing-certain-data-from-an-ems-device

[MichaelDvP]

Does the graph show the value you are searching for? The y-scale is missing. We need to have the numbers of the changes for time and value. The log has~200 telegrams per minute and it's hard to see the exact time in the graph. Can you give numbers for each change: time, from value, to value

[proddy]

Adding the dicsord discussion for reference here as it contains some good points.

BBQKees said

Do you have the new Bosch Energy Manager System with the additional power meter and that the system controls the actual compressor speed based on the PV availability? https://www.bosch-homecomfort.com/de/de/wohngebaeude/wissen/heizungssteuerung/der-energiemanager/ If so, we would like to capture with what commands on the EMS bus the Energy Manager controls the compressor speed. Also for your electricity consumption if it's sent over the EMS bus you we can try to find it in the data. In the Gateway menu you can log the EMS bus data via System->Log. Set it to Log Level ALL and to 100 items. Best is to enable NTP in the settings first so the time is accurate. Then make a note of values you see in the app together with the exact time they occur (up to the seconds precise). For each parameter you want to extract we need multiple different values over time. So if a compressor speed is always 100%, its harder to see it in the raw data. We need changes. If we know f.i. it's 12% on 14:22:01 and 35% on 14:23:55 we (actually usually our hexadecimal mastermind Michael) can find the values and thus the position and data type much easier in the raw EMS bus data.

[RaHehl]

The power consumption changes with compressor speed, can we filter the telegrams for these changes to have the timeframe? The app display and HA ist delayed

[RaHehl]

Dataflow:

[MichaelDvP]

The power consumption changes with compressor speed, can we filter the telegrams for these changes to have the timeframe?

We know the compressor speed from telegram 0x48D offset 17, also the the Power, but i think this is heating power, not electrical from 0ffset 11. In the log the gateway writes a few time 0x4A7 with two bytes, maybe a limit. And telegram 0x4AA seems to contain a lot of large 16bt values, the gateway sometimes reads some.

But we need a known, changing value to look for. EMS messages are not realtime, they come also delayed, we always have to check all telegrams within a minute to find a value.

[RaHehl]

1.6-1.5.txt

It looks like not every change in compressor output performance means a change in consumption. Here is a log that I stopped immediately after the display in the app changed from 1.6 to 1.5 kw

[RaHehl]

1.8-1.7.txt

This is a change from 1.8 to 1.7 kw

[MichaelDvP]

Can you check if this works in custom entities:

(or if you like kW, use factor 0.001

[RaHehl]

I can only select UINT i don't have the option UINT16.

The current heating run is over, I'll let you know if something happens, I've already played around with 04AA but always with offset, that hasn't worked yet, I'm excited to see what happens

[MichaelDvP]

Update to 3.7.-dev or set to Type: USHORT

[RaHehl]

Took a while (low energy house & heating already in summer mode)

But I can confirm it works perfectly:

HomeAssistant:

Energiemanager App:

The only noticeable thing that I think is correct: The amount of energy refers to the compressor and not to the heating element. I found that out when I tried to heat manually with "extra hot water" via the HomeCom app, which apparently doesn't start the compressor. But the heating element is not relevant to me, and in cases where you need it, the whole thing can be calculated quite easily.

Therefore the information is only about the name if it is not a custom element

Thank you all

[proddy]

Do we need to add this custom entity as a real entity, and change the name then?

[RaHehl]

I don't know the criteria for a "real entity", but I would say that a real-time consumption display is a very useful use case for the EMS ESP if he's connected to a heat pump.

Another topic: I don't have a use case for it myself because I have licensed the energy manager, but could you see in the log how the energy manager influences the heat pump's consumption?

[RaHehl]

F.Y.I: https://github.com/emsesp/EMS-ESP32/discussions/1678#discussioncomment-9283496

[MichaelDvP]

The only candidat i see is gateway(0x48) -W-> boiler(0x08), ?(0x04A7), data: 09 B9 00 00 a write from gateway to boiler, sometime 00 00 00 00 , sometimes the first16 bit set. 09B9 = 2489W could be a limit. Please check with: (UINT16 = USHORT in v3.6.x)

[RaHehl]

@MichaelDvP 2489W watts sounds absolutely correct, which corresponds approximately to the excess that I have observed in the last few days when the heat pump started, i will let u know tomorrow

[RaHehl]

@MichaelDvP I can confirm it seems to be something like the Powerlimit:

After reaching an excess of around 2500W that was fed into the battery, the "power limit" which was previously at 0 was set to around 2450W, and then the compressor started up with a slight delay.

So the value, as soon as it is sent from the energy manager to the heat pump, roughly corresponds to my surplus

This morning the short heating of the hot water was still without energy manager involvement, but that is clearly the case now

Maybe this topic can be implemented with these findings: https://github.com/emsesp/EMS-ESP32/discussions/1678

Now it would be exciting to see what happens if someone without an energy manager sets a limit while the hot water tank is cold, whether that is enough for the heat pump to start or whether additional values need to be set

@Vippis2000

[Vippis2000]

Ok I willing to give it a try. Please explain what I should do.

Currently I'm running 3.6.5 on a BBQKee S3.

[Vippis2000]

What is the correct test setting. Shall I set the limit before my heatpump program is about to kick in?

Currently I'm programming the switchPrograms for DHW and HC according to PV forecast. Today looks like this:

[RaHehl]

@Vippis2000 https://github.com/emsesp/EMS-ESP32/issues/1717#issuecomment-2088755872

I would just write 2500 in there and see if the compressor started after about 30 seconds

[Vippis2000]

So the expected behaviour would be:

If I set the powerlimit to 2500W the compressor should start working at 8:00 AM with a max. electrical power below 2500W? Or between 8AM and 6PM with a max. of 2500W accordingly

[RaHehl]

I would just write it in manually now without any schedule to see if it basically works

If that is successful, you could create a function similar to that of the energy manager from 2500W sureplus, with a certain attenuation for short clouds, report this to the heat pump, the only thing missing is a logic for Tibber, but when I see the prices, that's it probably more for the winter :D

[RaHehl]

It would also be worth mentioning that I now have 4500W surplus but the power limit remains at around 2600

and when the compressor is finished it takes a while then the power limit is set back to 0, even though there is enough Sure Plus in the house

[Vippis2000]

I tried to Add custom entities, but they don't show any value:

[Vippis2000]

I would just write it in manually now without any schedule to see if it basically works

If that is successful, you could create a function similar to that of the energy manager from 2500W sureplus, with a certain attenuation for short clouds, report this to the heat pump, the only thing missing is a logic for Tibber, but when I see the prices, that's it probably more for the winter :D

Yeah that was my original plan when power limiting works fine. The y-Axis for tibber is right :)

[proddy]

I tried to Add custom entities, but they don't show any value:

did you upgrade your 3.6.5 to 3.7.0-dev?

[Vippis2000]

Yes just updatet to 3.7.0-dev.7 and still not showing values

[RaHehl]

maybe because u don't have a energymeter sending them, which heat pump do you own?

[Vippis2000]

CS7000iAW9OR-S+AWM9

[Vippis2000]

maybe because u don't have a energymeter sending them, which heat pump do you own?

Maybe there is another type. There must be because your heatpump responds to the command of the energy manager

[Vippis2000]

Any update on this?

I can try other

[RaHehl]

maybe some configuration is required if u add a HP to the energy manager he configures the HP, maybe a recording of this config would help?

[Vippis2000]

Can you unmount and remount the HP to your energy manager? And record all changes on the EMS

Maybe the energy manager has done a firmware upgrade on the HP?

[RaHehl]

deactivate.txt activate.txt

[RaHehl]

PV-Start-2.txt

[Vippis2000]

Any update on this?

[myxor]

Just wanted to confirm that 0x08 0x4AA 0 USHORT is the current power consumption of my Buderus Logatherm WLW196i AR heat pump.

[Vippis2000]

Updatet to 3.7.0 dev11 and still no values of custom entities

[RaHehl]

also works perfectly in cooling mode

[Vippis2000]

Any new developments in this area?

[proddy]

Any new developments in this area?

I'm not sure what needs to be done. Do the custom entities from ReHehla and myxor not work for you?

[Vippis2000]

Any new developments in this area?

I'm not sure what needs to be done. Do the custom entities from ReHehla and myxor not work for you?

Sadly the do not. Seems that the "Energy manager" does some changes to the heatpump that creates those entities

[proddy]

@Vippis2000 @RaHehl - I have a request. I'd love to get some test data for a Heat pump into EMS-ESP so we can simulate and test Heat pumps (I have an old gas boiler). Same with Solar and other devices. Since you two are both active users would you mind sending over a dump of your device entity values? You'll need to upgrade to 3.7.0-dev18, click on the export button (see below) and send over the TXT file which has the JSON. The easiest way is to zip it and attach it to this GitHub issue. If you don't want to upgrade just yet. or have no time, it's also cool. Cheers! CC @bbqkees

[RaHehl]

@proddy Yes of course, but can I send you the txt via a more private method, perhaps by email?

[bbqkees]

@Vippis2000 @RaHehl - I have a request. I'd love to get some test data for a Heat pump into EMS-ESP so we can simulate and test Heat pumps (I have an old gas boiler). Same with Solar and other devices. Since you two are both active users would you mind sending over a dump of your device entity values? You'll need to upgrade to 3.7.0-dev18, click on the export button (see below) and send over the TXT file which has the JSON. The easiest way is to zip it and attach it to this GitHub issue. If you don't want to upgrade just yet. or have no time, it's also cool. Cheers! CC @bbqkees

If someone has a mixer module MM100/200/400, an SM100 or a RC310/RC800 thermostat we would like to get these datapoints as well (in English). Or basically any EMS device that is currently not listed on the demo website: https://ems-esp.derbyshire.nl/devices

[Vippis2000]

Of course, currently I'm on vacation. Will send it on Saturday