Stefan

No problem, this are already some helpful comments, perhaps someone else has seen a similar behavior and found a solution. So let's see if someone else has a comment or...

Okay, i'm getting one step forward. It seems that the Mobus TCP/RTU gateway don't like TCP payloads with more than one Modbus TCP packet inside. Here from a Wireshark trace:...

Thank you for the answer, i have tryed to change the line 323 to: return accesses and the result is, that the first TCP payload contains one register to query....

Okay, i use a different method to query all the values and control my heatpump. I programed an ESP32 with Modbus RTU adapter and this works perfect for me. And...

Today we installed a Altherma 3 H HT W (ETBH16EF9W) and Daikin told me to use the DCOM-LT/IO unit for Modbus access: https://www.daikin.eu/en_us/products/dcom-lt-io.html

Thanks for the Info... I will look for the /MB version... I'm searching for a solution to query some values and switch the functions heat/cooling/water on/off. Because i want to...

Hi, i have now a Daikin HomeHub, this part replaces the DCOM and can used with Modbus RTU "or" Modbus TCP. So there i no need for a additional RS485...

Here in germany from our installer, he got it from his Daikin reseller "thiele & fendel".

In my view you have 2 possible ways: Don't order the DCOM-LT-IO, use the HomeHub: [https://www.daikin.eu/en_us/products/product.html/EKRHH.html](url) When your heatpump isn't compatibe with the HomeHub, then you need to use the...

> Maybe the conclusion is that : > For GEN 2 => Use the DCOM-LT (MB or IO) > For GEN 3 => Use the HomeHub Okay, then the DCOM-LT,...