Hello, I want to replace my PEHA PHC System by something new (like Shelly e.g.). I want to keep the buttons in the rooms. I am trying to read out from the PHC bus what button has what number. So i connected a RS485-To-Wifi from Waveshare to the PHC Bus. I set it to 9600 Baud (8N1) and listened to the PHC-Bus while pressing various buttons in the house. Problem is: I get different HEX-Values all the time. When I press the button first time, there is no reaction on the bus, when i press it a second time (light out) I got a reaction. But the numbers do not make sense. I read the PDF about the PHC Protocol, but it didnt help me. Any Idea? In the end I want to use MQTT to use the buttons for switching the Shelly Relays.
00000010: 82e4 fc3c adfd 1610 1f08 90f8 8488 fd0c …<…
00000020: edfc 9408 1318 f1f2 04c8 fc06 2d7c 8408 …-|…
00000030: 7511 b208 88fd 866d 7f19 50f3 31f0 7f0c u…m…P.1…
00000040: c8fc 062d 7c84 0875 10b1 7c8c 88fd 866d …-|…u…|…m
00000050: 7f20 42de 08d0 788c 28fc 3cad fd16 101f . B…x.(.<…
00000060: 1891 788c 88fd 0ced fc94 0813 31d0 7e82 …x…1.~.
00000070: e4fc 0cad fd14 081f 3190 5f23 62ff 0ced …1._#b…
00000080: f594 0813 31f0 7f8c 28fc 062d 7c84 0875 …1…(…-|…u