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Fault Tolerance of "High-Speed" CAN

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There is a lot of information about "Low Speed CAN" being "Fault Tolerant."  In other words, whenever CAN-H or CAN-L is shorted to either Ground or +12v, the other non-shorted CAN line will continue working, albeit with timing issues and reduced noise immunity.  But there is an absolute dearth of information about the fault tolerance of HIGH-SPEED CAN (i.e., speeds greater than 125kb/s).  And if one wishes to contend that HIGH-SPEED is as Fault Tolerant as LOW-SPEED, why then isn't HIGH-SPEED CAN also deemed "Fault Tolerant"?

 

Can anyone point me to an ISO document or other official document that talks specifically about HIGH-SPEED CAN and what happens when either of the CAN lines is shorted to Ground or +12v?  I need an "official" source of information on this subject, not merely one's own personal experience or hear-say.

 

Thank you.

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Accepted by topic author JDW1

ISO 11898-2:2003 should be a good source for an official answer

 

http://www.iso.org/iso/catalogue_detail.htm?csnumber=33423

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Thank you for the speedy solution!

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JDW1:  In case you haven't received the ISO document yet, the relevent section of the cited ISO 11898-2:2003 you want to look at is section 7.6 "Bus failure management", and specifically Table 12 - "Bus failure detection" and Figure 19 - "Possible failures of bus lines".

 

GCentral
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