2 error signalling, Bosch, Error handling – Rainbow Electronics CAN интерфейс User Manual

Page 62

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BOSCH

ROBERT BOSCH GmbH, Postfach 300240, D-7000 Stuttgart 30

Sep. 1991

Part B - page 60

7.2 Error Signalling

A station detecting an error condition signals this by transmitting an ERROR FLAG. For
an ’error active’ node it is an ACTIVE ERROR FLAG, for an ’error passive’ node it is a
PASSIVE ERROR FLAG. Whenever a BIT ERROR, a STUFF ERROR, a FORM
ERROR or an ACKNOWLEDGMENT ERROR is detected by any station, transmission
of an ERROR FLAG is started at the respective station at the next bit.
Whenever a CRC ERROR is detected, transmission of an ERROR FLAG starts at the
bit following the ACK DELIMITER, unless an ERROR FLAG for another condition has
already been started.

Error Handling