Cryptic note on front page

[kyberias]

The front page of the OpenDTU site has this cryptic note:

You can only use one DTU for a specific inverter. You cannot query a inverter with two DTUs. Mixing up multiple DTUs may lead to an unexpected behavior!

I don't understand any of the three sentences.

What do you mean "DTU for a specific inverter"?
What do mean "query [an] inverter"?
What does it mean to "mix up multiple DTUs"?

Is it possible to run multiple ESP32 devices with OpenDTU to support multiple different type of microinverters? Eg. HM an HMS series.

If this is important information for the users, I think it should be stated more clearly.

[schlimmchen]

What do you mean "DTU for a specific inverter"?

Only a single one DTU (AhoyDTU, OpenDTU, OpenDTU-OnBattery, original DTU, etc). shall be actively talking to one specific inverter.

What do mean "query [an] inverter"?

Query data or transmit data from/to an inverter.

What does it mean to "mix up multiple DTUs"?

Having multiple DTUs (as listed above) talking to the same inverter.

Is it possible to run multiple ESP32 devices with OpenDTU to support multiple different type of microinverters? Eg. HM an HMS series.

Yes. As the one DTU will only be able to talk to HM inverters and the other will only be able to talk to HMS inverters, no two DTUs will ever talk to the same inverter.

[kyberias]

Ok, thanks.

The English wording is confusing due to the usage of the word "specific" among other things. Specific means "clearly defined or identified."

I would rephrase the whole note as follows, for example:

A single inverter can only communicate with one DTU. Having more than one DTU using the same radio frequency and protocol may lead to unexpected results due to inverters not knowing which DTU to communicate with.

I think this would make it more clear for a people just starting to read the introduction.

[schlimmchen]

Well, while I agree that the wording can be improved, your proposal is incorrect. You are welcome to use multiple DTUs with NRF or CMT2300 or even both, but you must not "register" the same inverter (serial number) with multiple DTUs.

Three iterations with ChatGPT and I propose this:

"Each inverter (identified by its serial number) can only be registered to one DTU at a time—any DTU (AhoyDTU, OpenDTU, OpenDTU-OnBattery, or an original DTU), but only one. Querying the same inverter from multiple DTUs will cause issues.

However, multiple DTUs can coexist, even on the same radio type (NRF24 or CMT2300A) and frequency. A single DTU can also manage multiple inverters, even across different radio types."

How about that? I will prepare a PR for Thomas, if you think that phrasing is spot on.