Diehl Sharky 775 heating meter

[jokkemokke]

Hello

I have a Diehl Sharky 775 heating meter that I would like to add to Domoticz, but so far I did not have any success.

According to this document: https://www.sauter.se/fileadmin/sas/pdf ... 1.1_EN.pdf the meter should be able to communicate with M-Bus over the optical interface.

I have tried using a optical USB probe with no modulation of the optical signal (simply diode on for 1 and diode off for 0) and a homemade USB probe with 38 kHz modulation (38 kHz modulated signal for 1 and diode off for 0).

The software I used was libmbus installed on a Linux pc.

If anyone have had success communicating with this type of meter, I would really appreciate if you would share the details about this.

Thanks.