> Jan Kiszka wrote: > >Karl Reichert wrote: > >> Jan Kiszka wrote: > >>> Karl Reichert wrote: > >>>> Hello, > >>>> > >>>> I have a question concerning RTcfg-frames. I couldn't completely > >> understand from RTcfg.spec how these frames are looking like. I made > two models > >> and I think one of these is correct (see attachment). Which one? > >>> The first one. RTmac frames have their own Ethertype (0x9021), and > they > >>> only contain discipline frames (like TDMA) or encapsulated non-RT > frames > >>> (see the vnic tunnels). RTcfg frames are just plain RT payload, like > >>> frames issued by RT-applications. > >> BTW, Ethereal, err..., Wireshark perfectly understands RTnet. =8) > >> > >> Jan > >> > > Thanks. Another question: Are those Frame Identifier Bits (B4..0) the > same like the ID? It's little bit mistakable because they are 1 Byte (all > taken from RTcfg.spec). > > If not, what if the Frame Identifier for / filled with? > > I see the confusion: "Frame Identifier" may rather be called "Frame > Type" so that "Frame Version" + "Frame Type" form the "Frame ID" (or > just ID) as this byte is called later on. May may grab this information > >from the textual description, but the naming can indeed be misleading. > > HTH, > Jan > > > PS: _Always_ reply to all... > Another question, maybe very simple but can't find it in the spec: How is data send? Just as a plain/raw packet or is there also sth added like version or type in the TDMA-Frame? Thanks Karl -- von Karl Reichert
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