Thread: Com wire
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Unread 14-01-2016, 19:49
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Omar Zrien
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Re: Com wire
FRC CAN is DW_CAN (aka Dual wire CAN, ISO11898 ).
There are only two termination points, each end of the cable (120ohm).
This means one long transmission line, where each ECU taps in (with a small stub length).

FRC CAN is NOT LSFT-CAN(aka Fault Tolerant CAN, Low Speed Fault Tolerant). Fault-tolerant means something very specific.

The two green wires (Talon) and two green connectors (PCM/PDP) are common. Same is true for yellow. So this produces one long bus-harness that each device taps into (albeit internally, but it is a tap). That's kinda why I never really liked the term daisy-chain, but as far as the person wiring it all, it does all hookup in that fashion, so I'm okay with it.

Sure we could put one single small pigtail on every CTRE CAN Device and force teams to create a bus harness (like in a car) but I think the solution we have now is more robust.