3 ms·
> Much higher performance ethernet. Depends what performance you are after. Ethernet isn't rated for safety critical stuff. It doesn't provide mechanisms for p
by KaiserPro 3y ago
> Much higher performance ethernet.
Depends what performance you are after. Ethernet isn't rated for safety critical stuff. It doesn't provide mechanisms for packet loss detection, and in most cases is pretty shit at flow control.
Ethernet is also shit for small sensors/actuators. There are lots of low bandwidth devices that need power and comms, ethernet isn't designed for that. having to route 2 pairs of cables to everything in a star pattern is really impractical.
Its probably ok for linking different zones, of non critical stuff. But running PoE? for all but specialist things, that sounds frankly stupid.
- sephamorr 3y agoThere has been a lot of work developing standards for reliable ethernet for industrial and automotive applications, resolving most of the issues you mention which apply to 100/1000Base-T. Tesla isn't using your garden variety ethernet or abominations like ethercat. 100/1000Base-T1 is intended to be used with PoDL (802.3bg/cu) and TSN (various 802.1Q)to result in reliable links with guaranteed latency and bandwidth properties. PHY power is a few hundred mw though, and star topologies are limiting to replace CAN/LIN nodes, that's what 10Base-T1S is for though (cheaper, bussed, lower power).