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Import 3 byte KNX value

7 years ago in Devices / KNX • updated 7 years ago • 2

I´m trying to import a 3 byte status value that needs to be put through the bit converter. Altough the only option I find is to import it as a date or time value. How do I add it as a generic 3byte value?

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7 years ago

Hello, Based on the official KNX document, there is no generic 3byte value, there is only date or time, so you cannot add it as a generic 3byte value in bOS.

Additional information can be found:

http://www.knx.org/fileadmin/template/documents/downloads_support_menu/KNX_tutor_seminar_page/Advanced_documentation/05_Interworking_E1209.pdf

Regards,

7 years ago

The document you linked to is not the complete KNX standard as stated on top of page 10: "This section lists some common KNX datapoint types. ".

You can see the complete datapoint spec here: https://drive.google.com/file/d/0B22L-BHXMRCMTzJLbWZJdVdYUGs/view?usp=sharing

Date and time might be the most common 3 byte objects in the KNX standard, but there are many others. For example 6.4.1 for sending a RGB value is becoming more and more common due to more KNX/Dali gateways supporting Device Type 8 ECGs, so you can send the RGB value over one group adress instead of 3. Useful since then the DALI ECG only occupies one DALI adress instead of 3.

Also see DPT 3.33-3.41, 3.44, 4.10-4.12, 4.14, 4.24 and 8.5.1 which is the one I would need to use in this application.

So is this something you can consider adding in future updates?

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