In an IP based topology, must the bus also be IP based - i.e CAT5 cable - or could it also be TP? Can we also use combination? For instance TP for lines and IP for the area backbones? Or am I misunderstanding the whole concept?
I'd argue that's less of a choice and more of a consequence of the devices that you choose to use. From that perspective, if you choose to use a KNX-IP router, then you have no choice but to connect multiple lines (or multiple areas, but not both) through your Ethernet infrastructure. At the same time, each line/area uses KNX TP to connect all the KNX devices of that line/area, including the router. If you choose to use a line coupler, then you have to use KNX TP for both the interconnection of your KNX devices, and the interconnection of your lines/areas. FInally, note that KNX-IP Router is a misnomer. It should be called Gateway or Bridge. Therefore, you need a KNX-IP router at every point where your transmission medium goes from one type to another (KNX TP Ethernet).
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gracias bro
In an IP based topology, must the bus also be IP based - i.e CAT5 cable - or could it also be TP? Can we also use combination? For instance TP for lines and IP for the area backbones? Or am I misunderstanding the whole concept?
I'd argue that's less of a choice and more of a consequence of the devices that you choose to use.
From that perspective, if you choose to use a KNX-IP router, then you have no choice but to connect multiple lines (or multiple areas, but not both) through your Ethernet infrastructure. At the same time, each line/area uses KNX TP to connect all the KNX devices of that line/area, including the router.
If you choose to use a line coupler, then you have to use KNX TP for both the interconnection of your KNX devices, and the interconnection of your lines/areas.
FInally, note that KNX-IP Router is a misnomer. It should be called Gateway or Bridge. Therefore, you need a KNX-IP router at every point where your transmission medium goes from one type to another (KNX TP Ethernet).